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d7a8bea363
4830 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Ross Zwisler
|
9f418224e8 |
radix tree: fix multi-order iteration race
Fix a race in the multi-order iteration code which causes the kernel to
hit a GP fault. This was first seen with a production v4.15 based
kernel (4.15.6-300.fc27.x86_64) utilizing a DAX workload which used
order 9 PMD DAX entries.
The race has to do with how we tear down multi-order sibling entries
when we are removing an item from the tree. Remember for example that
an order 2 entry looks like this:
struct radix_tree_node.slots[] = [entry][sibling][sibling][sibling]
where 'entry' is in some slot in the struct radix_tree_node, and the
three slots following 'entry' contain sibling pointers which point back
to 'entry.'
When we delete 'entry' from the tree, we call :
radix_tree_delete()
radix_tree_delete_item()
__radix_tree_delete()
replace_slot()
replace_slot() first removes the siblings in order from the first to the
last, then at then replaces 'entry' with NULL. This means that for a
brief period of time we end up with one or more of the siblings removed,
so:
struct radix_tree_node.slots[] = [entry][NULL][sibling][sibling]
This causes an issue if you have a reader iterating over the slots in
the tree via radix_tree_for_each_slot() while only under
rcu_read_lock()/rcu_read_unlock() protection. This is a common case in
mm/filemap.c.
The issue is that when __radix_tree_next_slot() => skip_siblings() tries
to skip over the sibling entries in the slots, it currently does so with
an exact match on the slot directly preceding our current slot.
Normally this works:
V preceding slot
struct radix_tree_node.slots[] = [entry][sibling][sibling][sibling]
^ current slot
This lets you find the first sibling, and you skip them all in order.
But in the case where one of the siblings is NULL, that slot is skipped
and then our sibling detection is interrupted:
V preceding slot
struct radix_tree_node.slots[] = [entry][NULL][sibling][sibling]
^ current slot
This means that the sibling pointers aren't recognized since they point
all the way back to 'entry', so we think that they are normal internal
radix tree pointers. This causes us to think we need to walk down to a
struct radix_tree_node starting at the address of 'entry'.
In a real running kernel this will crash the thread with a GP fault when
you try and dereference the slots in your broken node starting at
'entry'.
We fix this race by fixing the way that skip_siblings() detects sibling
nodes. Instead of testing against the preceding slot we instead look
for siblings via is_sibling_entry() which compares against the position
of the struct radix_tree_node.slots[] array. This ensures that sibling
entries are properly identified, even if they are no longer contiguous
with the 'entry' they point to.
Link: http://lkml.kernel.org/r/20180503192430.7582-6-ross.zwisler@linux.intel.com
Fixes:
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Matthew Wilcox
|
1e3054b98c |
lib/test_bitmap.c: fix bitmap optimisation tests to report errors correctly
I had neglected to increment the error counter when the tests failed,
which made the tests noisy when they fail, but not actually return an
error code.
Link: http://lkml.kernel.org/r/20180509114328.9887-1-mpe@ellerman.id.au
Fixes:
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|
Steven Rostedt (VMware)
|
85f4f12d51 |
vsprintf: Replace memory barrier with static_key for random_ptr_key update
Reviewing Tobin's patches for getting pointers out early before
entropy has been established, I noticed that there's a lone smp_mb() in
the code. As with most lone memory barriers, this one appears to be
incorrectly used.
We currently basically have this:
get_random_bytes(&ptr_key, sizeof(ptr_key));
/*
* have_filled_random_ptr_key==true is dependent on get_random_bytes().
* ptr_to_id() needs to see have_filled_random_ptr_key==true
* after get_random_bytes() returns.
*/
smp_mb();
WRITE_ONCE(have_filled_random_ptr_key, true);
And later we have:
if (unlikely(!have_filled_random_ptr_key))
return string(buf, end, "(ptrval)", spec);
/* Missing memory barrier here. */
hashval = (unsigned long)siphash_1u64((u64)ptr, &ptr_key);
As the CPU can perform speculative loads, we could have a situation
with the following:
CPU0 CPU1
---- ----
load ptr_key = 0
store ptr_key = random
smp_mb()
store have_filled_random_ptr_key
load have_filled_random_ptr_key = true
BAD BAD BAD! (you're so bad!)
Because nothing prevents CPU1 from loading ptr_key before loading
have_filled_random_ptr_key.
But this race is very unlikely, but we can't keep an incorrect smp_mb() in
place. Instead, replace the have_filled_random_ptr_key with a static_branch
not_filled_random_ptr_key, that is initialized to true and changed to false
when we get enough entropy. If the update happens in early boot, the
static_key is updated immediately, otherwise it will have to wait till
entropy is filled and this happens in an interrupt handler which can't
enable a static_key, as that requires a preemptible context. In that case, a
work_queue is used to enable it, as entropy already took too long to
establish in the first place waiting a little more shouldn't hurt anything.
The benefit of using the static key is that the unlikely branch in
vsprintf() now becomes a nop.
Link: http://lkml.kernel.org/r/20180515100558.21df515e@gandalf.local.home
Cc: stable@vger.kernel.org
Fixes:
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Linus Torvalds
|
0503fd658d |
another dma-mapping fix for 4.17-rc:
- just one little fix from Jean to avoid a harmless but very annoying
warning, especially for the drm code
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Merge tag 'dma-mapping-4.17-5' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fix from Christoph Hellwig:
"Just one little fix from Jean to avoid a harmless but very annoying
warning, especially for the drm code"
* tag 'dma-mapping-4.17-5' of git://git.infradead.org/users/hch/dma-mapping:
swiotlb: silent unwanted warning "buffer is full"
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Jean Delvare
|
05e13bb57e |
swiotlb: silent unwanted warning "buffer is full"
If DMA_ATTR_NO_WARN is passed to swiotlb_alloc_buffer(), it should be
passed further down to swiotlb_tbl_map_single(). Otherwise we escape
half of the warnings but still log the other half.
This is one of the multiple causes of spurious warnings reported at:
https://bugs.freedesktop.org/show_bug.cgi?id=104082
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes:
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Yury Norov
|
4ba281d5bd |
lib/find_bit_benchmark.c: avoid soft lockup in test_find_first_bit()
test_find_first_bit() is intentionally sub-optimal, and may cause soft
lockup due to long time of run on some systems. So decrease length of
bitmap to traverse to avoid lockup.
With the change below, time of test execution doesn't exceed 0.2 seconds
on my testing system.
Link: http://lkml.kernel.org/r/20180420171949.15710-1-ynorov@caviumnetworks.com
Fixes:
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Michel Dänzer
|
892a0be43e |
swiotlb: fix inversed DMA_ATTR_NO_WARN test
The result was printing the warning only when we were explicitly asked
not to.
Cc: stable@vger.kernel.org
Fixes:
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Linus Torvalds
|
fff75eb2a0 |
errseq infrastructure fix for v4.17
-----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJa55HYAAoJEAAOaEEZVoIVbr4QAICUweu5RqbcNm6/zGZkYJvP Cmk9bRhqluM3sx7RpDpsgde12z5j6qt+MbS1k+uZ7+V5gsO25jYuQYNGs6io6IEL WzO81HsMmqqqV30MI0/S4ffaYDtqTfJdKkbWvvV7aoFUZpz5oHNjqQM30hSRzy+i 1e6EfxtzUvaavekCvVCqQoDwXWMp1jaxCIFPNiIY82NPmszovydaZiZORL6qRXIM x/n3gWLJv2c0iRr6PBLIwKVOqPmdWwsmgSXTvP5/IH6LuQOZjmfHCJaxA8HZeFyz WvVTaH7aGtYp/pZt6UzvUlCXXcDKVYR4RmCfHW5+OXBsRQPfkSWKRguDXsvedrHe vQN7csCR47AwBsGtli6EF/VzwQnbCLjxOJ8kxVItPHlplYWeRsQCNw0JT9i6wB2k OIuRwekQTYUTXAHYm7XM21wS+JJbcTfANIfmmmfIrcF/Z/Zard5/UuCPSaKcizTy +qVhYE7m+cNYvARgxYrDvCXO7fnef6fj+cC4DrPmqfkvaJfd4U61Yls7QDi9NuO9 DNehjrWOR1ZLlI98aHjs65tilVFA++k2YdR8283ZqXE1tksUI3w/JvBa/h/H/9lr F290fgEe31yMAv3ky0QKm3Glr5Qu9I6AOSWWIHCmW7w6CkFB/K/1iKgy3h2g6rPL 3cMUf/uV4mA9RzAhSgx3 =pLgb -----END PGP SIGNATURE----- Merge tag 'errseq-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux Pull errseq infrastructure fix from Jeff Layton: "The PostgreSQL developers recently had a spirited discussion about the writeback error handling in Linux, and reached out to us about a behavoir change to the code that bit them when the errseq_t changes were merged. When we changed to using errseq_t for tracking writeback errors, we lost the ability for an application to see a writeback error that occurred before the open on which the fsync was issued. This was problematic for PostgreSQL which offloads fsync calls to a completely separate process from the DB writers. This patch restores that ability. If the errseq_t value in the inode does not have the SEEN flag set, then we just return 0 for the sample. That ensures that any recorded error is always delivered at least once. Note that we might still lose the error if the inode gets evicted from the cache before anything can reopen it, but that was the case before errseq_t was merged. At LSF/MM we had some discussion about keeping inodes with unreported writeback errors around in the cache for longer (possibly indefinitely), but that's really a separate problem" * tag 'errseq-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux: errseq: Always report a writeback error once |
||
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Linus Torvalds
|
ee3748be5c |
Driver core fixes for 4.17-rc3
Here are some small driver core and firmware fixes for 4.17-rc3 There's a kobject WARN() removal to make syzkaller a lot happier about some "normal" error paths that it keeps hitting, which should reduce the number of false-positives we have been getting recently. There's also some fimware test and documentation fixes, and the coredump() function signature change that needed to happen after -rc1 before drivers started to take advantage of it. All of these have been in linux-next with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCWuMxrw8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ymFpQCg1JM62/W8e6mQ4vdZNQmAzgMKMEMAniOMcVRX /oDWXp64mYwJu+GTxnIJ =+9Gk -----END PGP SIGNATURE----- Merge tag 'driver-core-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core fixes from Greg Kroah-Hartman: "Here are some small driver core and firmware fixes for 4.17-rc3 There's a kobject WARN() removal to make syzkaller a lot happier about some "normal" error paths that it keeps hitting, which should reduce the number of false-positives we have been getting recently. There's also some fimware test and documentation fixes, and the coredump() function signature change that needed to happen after -rc1 before drivers started to take advantage of it. All of these have been in linux-next with no reported issues" * tag 'driver-core-4.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: firmware: some documentation fixes selftests:firmware: fixes a call to a wrong function name kobject: don't use WARN for registration failures firmware: Fix firmware documentation for recent file renames test_firmware: fix setting old custom fw path back on exit, second try test_firmware: Install all scripts drivers: change struct device_driver::coredump() return type to void |
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Matthew Wilcox
|
b4678df184 |
errseq: Always report a writeback error once
The errseq_t infrastructure assumes that errors which occurred before
the file descriptor was opened are of no interest to the application.
This turns out to be a regression for some applications, notably Postgres.
Before errseq_t, a writeback error would be reported exactly once (as
long as the inode remained in memory), so Postgres could open a file,
call fsync() and find out whether there had been a writeback error on
that file from another process.
This patch changes the errseq infrastructure to report errors to all
file descriptors which are opened after the error occurred, but before
it was reported to any file descriptor. This restores the user-visible
behaviour.
Cc: stable@vger.kernel.org
Fixes:
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Takashi Iwai
|
504a918e67 |
dma-direct: don't retry allocation for no-op GFP_DMA
When an allocation with lower dma_coherent mask fails, dma_direct_alloc()
retries the allocation with GFP_DMA. But, this is useless for
architectures that hav no ZONE_DMA.
Fix it by adding the check of CONFIG_ZONE_DMA before retrying the
allocation.
Fixes:
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Dmitry Vyukov
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3e14c6abbf |
kobject: don't use WARN for registration failures
This WARNING proved to be noisy. The function still returns an error and callers should handle it. That's how most of kernel code works. Downgrade the WARNING to pr_err() and leave WARNINGs for kernel bugs. Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Reported-by: syzbot+209c0f67f99fec8eb14b@syzkaller.appspotmail.com Reported-by: syzbot+7fb6d9525a4528104e05@syzkaller.appspotmail.com Reported-by: syzbot+2e63711063e2d8f9ea27@syzkaller.appspotmail.com Reported-by: syzbot+de73361ee4971b6e6f75@syzkaller.appspotmail.com Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Linus Torvalds
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a72db42cee |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Unbalanced refcounting in TIPC, from Jon Maloy.
2) Only allow TCP_MD5SIG to be set on sockets in close or listen state.
Once the connection is established it makes no sense to change this.
From Eric Dumazet.
3) Missing attribute validation in neigh_dump_table(), also from Eric
Dumazet.
4) Fix address comparisons in SCTP, from Xin Long.
5) Neigh proxy table clearing can deadlock, from Wolfgang Bumiller.
6) Fix tunnel refcounting in l2tp, from Guillaume Nault.
7) Fix double list insert in team driver, from Paolo Abeni.
8) af_vsock.ko module was accidently made unremovable, from Stefan
Hajnoczi.
9) Fix reference to freed llc_sap object in llc stack, from Cong Wang.
10) Don't assume netdevice struct is DMA'able memory in virtio_net
driver, from Michael S. Tsirkin.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (62 commits)
net/smc: fix shutdown in state SMC_LISTEN
bnxt_en: Fix memory fault in bnxt_ethtool_init()
virtio_net: sparse annotation fix
virtio_net: fix adding vids on big-endian
virtio_net: split out ctrl buffer
net: hns: Avoid action name truncation
docs: ip-sysctl.txt: fix name of some ipv6 variables
vmxnet3: fix incorrect dereference when rxvlan is disabled
llc: hold llc_sap before release_sock()
MAINTAINERS: Direct networking documentation changes to netdev
atm: iphase: fix spelling mistake: "Tansmit" -> "Transmit"
net: qmi_wwan: add Wistron Neweb D19Q1
net: caif: fix spelling mistake "UKNOWN" -> "UNKNOWN"
net: stmmac: Disable ACS Feature for GMAC >= 4
net: mvpp2: Fix DMA address mask size
net: change the comment of dev_mc_init
net: qualcomm: rmnet: Fix warning seen with fill_info
tun: fix vlan packet truncation
tipc: fix infinite loop when dumping link monitor summary
tipc: fix use-after-free in tipc_nametbl_stop
...
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Randy Dunlap
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5968a70d7a |
textsearch: fix kernel-doc warnings and add kernel-api section
Make lib/textsearch.c usable as kernel-doc. Add textsearch() function family to kernel-api documentation. Fix kernel-doc warnings in <linux/textsearch.h>: ../include/linux/textsearch.h:65: warning: Incorrect use of kernel-doc format: * get_next_block - fetch next block of data ../include/linux/textsearch.h:82: warning: Incorrect use of kernel-doc format: * finish - finalize/clean a series of get_next_block() calls Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Linus Torvalds
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9fb71c2f23 |
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A set of fixes and updates for x86:
- Address a swiotlb regression which was caused by the recent DMA
rework and made driver fail because dma_direct_supported() returned
false
- Fix a signedness bug in the APIC ID validation which caused invalid
APIC IDs to be detected as valid thereby bloating the CPU possible
space.
- Fix inconsisten config dependcy/select magic for the MFD_CS5535
driver.
- Fix a corruption of the physical address space bits when encryption
has reduced the address space and late cpuinfo updates overwrite
the reduced bit information with the original value.
- Dominiks syscall rework which consolidates the architecture
specific syscall functions so all syscalls can be wrapped with the
same macros. This allows to switch x86/64 to struct pt_regs based
syscalls. Extend the clearing of user space controlled registers in
the entry patch to the lower registers"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/apic: Fix signedness bug in APIC ID validity checks
x86/cpu: Prevent cpuinfo_x86::x86_phys_bits adjustment corruption
x86/olpc: Fix inconsistent MFD_CS5535 configuration
swiotlb: Use dma_direct_supported() for swiotlb_ops
syscalls/x86: Adapt syscall_wrapper.h to the new syscall stub naming convention
syscalls/core, syscalls/x86: Rename struct pt_regs-based sys_*() to __x64_sys_*()
syscalls/core, syscalls/x86: Clean up compat syscall stub naming convention
syscalls/core, syscalls/x86: Clean up syscall stub naming convention
syscalls/x86: Extend register clearing on syscall entry to lower registers
syscalls/x86: Unconditionally enable 'struct pt_regs' based syscalls on x86_64
syscalls/x86: Use 'struct pt_regs' based syscall calling for IA32_EMULATION and x32
syscalls/core: Prepare CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y for compat syscalls
syscalls/x86: Use 'struct pt_regs' based syscall calling convention for 64-bit syscalls
syscalls/core: Introduce CONFIG_ARCH_HAS_SYSCALL_WRAPPER=y
x86/syscalls: Don't pointlessly reload the system call number
x86/mm: Fix documentation of module mapping range with 4-level paging
x86/cpuid: Switch to 'static const' specifier
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Philipp Rudo
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df6f2801f5 |
kernel/kexec_file.c: move purgatories sha256 to common code
The code to verify the new kernels sha digest is applicable for all architectures. Move it to common code. One problem is the string.c implementation on x86. Currently sha256 includes x86/boot/string.h which defines memcpy and memset to be gcc builtins. By moving the sha256 implementation to common code and changing the include to linux/string.h both functions are no longer defined. Thus definitions have to be provided in x86/purgatory/string.c Link: http://lkml.kernel.org/r/20180321112751.22196-12-prudo@linux.vnet.ibm.com Signed-off-by: Philipp Rudo <prudo@linux.vnet.ibm.com> Acked-by: Dave Young <dyoung@redhat.com> Cc: AKASHI Takahiro <takahiro.akashi@linaro.org> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
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4ac1800f81 |
We decided to request the latest three patches to be merged into this
merge window while it's still open.
1. The first patch adds a new function to lockref: lockref_put_not_zero
2. The second patch fixes GFS2's glock dump code so it uses the new lockref
function. This fixes a problem whereby lock dumps could miss glocks.
3. I made a minor patch to update some comments and fix the lock ordering
text in our gfs2-glocks.txt Documentation file.
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Merge tag 'gfs2-4.17.fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull more gfs2 updates from Bob Peterson:
"We decided to request the latest three patches to be merged into this
merge window while it's still open.
- The first patch adds a new function to lockref:
lockref_put_not_zero
- The second patch fixes GFS2's glock dump code so it uses the new
lockref function. This fixes a problem whereby lock dumps could
miss glocks.
- I made a minor patch to update some comments and fix the lock
ordering text in our gfs2-glocks.txt Documentation file"
* tag 'gfs2-4.17.fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
GFS2: Minor improvements to comments and documentation
gfs2: Stop using rhashtable_walk_peek
lockref: Add lockref_put_not_zero
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Linus Torvalds
|
c5c177c5fd |
Fix for one swiotlb regression in 2.16 from Takashi.
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||
|
Andreas Gruenbacher
|
450b1f6f56 |
lockref: Add lockref_put_not_zero
Put a lockref unless the lockref is dead or its count would become zero. This is the same as lockref_put_or_lock except that the lock is never left held. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Bob Peterson <rpeterso@redhat.com> |
||
|
Ingo Molnar
|
ef389b7346 |
Merge branch 'WIP.x86/asm' into x86/urgent, because the topic is ready
Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Matthew Wilcox
|
fa290cda10 |
radix tree: use GFP_ZONEMASK bits of gfp_t for flags
Patch series "XArray", v9. (First part thereof). This patchset is, I believe, appropriate for merging for 4.17. It contains the XArray implementation, to eventually replace the radix tree, and converts the page cache to use it. This conversion keeps the radix tree and XArray data structures in sync at all times. That allows us to convert the page cache one function at a time and should allow for easier bisection. Other than renaming some elements of the structures, the data structures are fundamentally unchanged; a radix tree walk and an XArray walk will touch the same number of cachelines. I have changes planned to the XArray data structure, but those will happen in future patches. Improvements the XArray has over the radix tree: - The radix tree provides operations like other trees do; 'insert' and 'delete'. But what most users really want is an automatically resizing array, and so it makes more sense to give users an API that is like an array -- 'load' and 'store'. We still have an 'insert' operation for users that really want that semantic. - The XArray considers locking as part of its API. This simplifies a lot of users who formerly had to manage their own locking just for the radix tree. It also improves code generation as we can now tell RCU that we're holding a lock and it doesn't need to generate as much fencing code. The other advantage is that tree nodes can be moved (not yet implemented). - GFP flags are now parameters to calls which may need to allocate memory. The radix tree forced users to decide what the allocation flags would be at creation time. It's much clearer to specify them at allocation time. - Memory is not preloaded; we don't tie up dozens of pages on the off chance that the slab allocator fails. Instead, we drop the lock, allocate a new node and retry the operation. We have to convert all the radix tree, IDA and IDR preload users before we can realise this benefit, but I have not yet found a user which cannot be converted. - The XArray provides a cmpxchg operation. The radix tree forces users to roll their own (and at least four have). - Iterators take a 'max' parameter. That simplifies many users and will reduce the amount of iteration done. - Iteration can proceed backwards. We only have one user for this, but since it's called as part of the pagefault readahead algorithm, that seemed worth mentioning. - RCU-protected pointers are not exposed as part of the API. There are some fun bugs where the page cache forgets to use rcu_dereference() in the current codebase. - Value entries gain an extra bit compared to radix tree exceptional entries. That gives us the extra bit we need to put huge page swap entries in the page cache. - Some iterators now take a 'filter' argument instead of having separate iterators for tagged/untagged iterations. The page cache is improved by this: - Shorter, easier to read code - More efficient iterations - Reduction in size of struct address_space - Fewer walks from the top of the data structure; the XArray API encourages staying at the leaf node and conducting operations there. This patch (of 8): None of these bits may be used for slab allocations, so we can use them as radix tree flags as long as we mask them off before passing them to the slab allocator. Move the IDR flag from the high bits to the GFP_ZONEMASK bits. Link: http://lkml.kernel.org/r/20180313132639.17387-3-willy@infradead.org Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Acked-by: Jeff Layton <jlayton@kernel.org> Cc: Darrick J. Wong <darrick.wong@oracle.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Matthew Wilcox
|
68c1f08203 |
lib/list_debug.c: print unmangled addresses
The entire point of printing the pointers in list_debug is to see if there's any useful information in them (eg poison values, ASCII, etc); obscuring them to see if they compare equal makes them much less useful. If an attacker can force this message to be printed, we've already lost. Link: http://lkml.kernel.org/r/20180401223237.GV13332@bombadil.infradead.org Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Reviewed-by: Tobin C. Harding <me@tobin.cc> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Eric Biggers <ebiggers3@gmail.com> Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Colin Ian King
|
3175060092 |
lib/test_ubsan.c: make test_ubsan_misaligned_access() static
test_ubsan_misaligned_access() is local to the source and does not need to be in global scope, so make it static. Cleans up sparse warning: lib/test_ubsan.c:91:6: warning: symbol 'test_ubsan_misaligned_access' was not declared. Should it be static? Link: http://lkml.kernel.org/r/20180313103048.28513-1-colin.king@canonical.com Signed-off-by: Colin Ian King <colin.king@canonical.com> Cc: Jinbum Park <jinb.park7@gmail.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Jinbum Park
|
854686f4ed |
lib: add testing module for UBSAN
This is a test module for UBSAN. It triggers all undefined behaviors that linux supports now, and detect them. All test-cases have passed by compiling with gcc-5.5.0. If use gcc-4.9.x, misaligned, out-of-bounds, object-size-mismatch will not be detected. Because gcc-4.9.x doesn't support them. Link: http://lkml.kernel.org/r/20180309102247.GA2944@pjb1027-Latitude-E5410 Signed-off-by: Jinbum Park <jinb.park7@gmail.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Kees Cook
|
f6f66c1bf5 |
lib/test_bitmap.c: do not accidentally use stack VLA
This avoids an accidental stack VLA (since the compiler thinks the value of "len" can change, even when marked "const"). This just replaces it with a #define so it will DTRT. Seen with -Wvla. Fixed as part of the directive to remove all VLAs from the kernel: https://lkml.org/lkml/2018/3/7/621 Link: http://lkml.kernel.org/r/20180307212555.GA17927@beast Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Yury Norov <ynorov@caviumnetworks.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Randy Dunlap
|
5f00ae0d3e |
lib/Kconfig.debug: Debug Lockups and Hangs: keep SOFTLOCKUP options together
Keep all of the SOFTLOCKUP kconfig symbols together (instead of
injecting the HARDLOCKUP symbols in the midst of them) so that the
config tools display them with their dependencies.
Tested with 'make {menuconfig/nconfig/gconfig/xconfig}'.
Link: http://lkml.kernel.org/r/6be2d9ed-4656-5b94-460d-7f051e2c7570@infradead.org
Fixes:
|
||
|
Andrei Vagin
|
d1be35cb6f |
proc: add seq_put_decimal_ull_width to speed up /proc/pid/smaps
seq_put_decimal_ull_w(m, str, val, width) prints a decimal number with a
specified minimal field width.
It is equivalent of seq_printf(m, "%s%*d", str, width, val), but it
works much faster.
== test_smaps.py
num = 0
with open("/proc/1/smaps") as f:
for x in xrange(10000):
data = f.read()
f.seek(0, 0)
==
== Before patch ==
$ time python test_smaps.py
real 0m4.593s
user 0m0.398s
sys 0m4.158s
== After patch ==
$ time python test_smaps.py
real 0m3.828s
user 0m0.413s
sys 0m3.408s
$ perf -g record python test_smaps.py
== Before patch ==
- 79.01% 3.36% python [kernel.kallsyms] [k] show_smap.isra.33
- 75.65% show_smap.isra.33
+ 48.85% seq_printf
+ 15.75% __walk_page_range
+ 9.70% show_map_vma.isra.23
0.61% seq_puts
== After patch ==
- 75.51% 4.62% python [kernel.kallsyms] [k] show_smap.isra.33
- 70.88% show_smap.isra.33
+ 24.82% seq_put_decimal_ull_w
+ 19.78% __walk_page_range
+ 12.74% seq_printf
+ 11.08% show_map_vma.isra.23
+ 1.68% seq_puts
[akpm@linux-foundation.org: fix drivers/of/unittest.c build]
Link: http://lkml.kernel.org/r/20180212074931.7227-1-avagin@openvz.org
Signed-off-by: Andrei Vagin <avagin@openvz.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Andrey Konovalov
|
69ca372c10 |
kasan: prevent compiler from optimizing away memset in tests
A compiler can optimize away memset calls by replacing them with mov instructions. There are KASAN tests that specifically test that KASAN correctly handles memset calls so we don't want this optimization to happen. The solution is to add -fno-builtin flag to test_kasan.ko Link: http://lkml.kernel.org/r/105ec9a308b2abedb1a0d1fdced0c22d765e4732.1519924383.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Nick Terrell <terrelln@fb.com> Cc: Chris Mason <clm@fb.com> Cc: Yury Norov <ynorov@caviumnetworks.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: "Luis R . Rodriguez" <mcgrof@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Jeff Layton <jlayton@redhat.com> Cc: "Jason A . Donenfeld" <Jason@zx2c4.com> Cc: Kostya Serebryany <kcc@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Andrey Konovalov
|
91c93ed07f |
kasan: fix invalid-free test crashing the kernel
When an invalid-free is triggered by one of the KASAN tests, the object doesn't actually get freed. This later leads to a BUG failure in kmem_cache_destroy that checks that there are no allocated objects in the cache that is being destroyed. Fix this by calling kmem_cache_free with the proper object address after the call that triggers invalid-free. Link: http://lkml.kernel.org/r/286eaefc0a6c3fa9b83b87e7d6dc0fbb5b5c9926.1519924383.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Nick Terrell <terrelln@fb.com> Cc: Chris Mason <clm@fb.com> Cc: Yury Norov <ynorov@caviumnetworks.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: "Luis R . Rodriguez" <mcgrof@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Jeff Layton <jlayton@redhat.com> Cc: "Jason A . Donenfeld" <Jason@zx2c4.com> Cc: Kostya Serebryany <kcc@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Takashi Iwai
|
9e7f06c8be |
swiotlb: fix unexpected swiotlb_alloc_coherent failures
The code refactoring by commit |
||
|
Linus Torvalds
|
2a56bb596b |
New features:
- Tom Zanussi's extended histogram work
This adds the synthetic events to have histograms from multiple event data
Adds triggers "onmatch" and "onmax" to call the synthetic events
Several updates to the histogram code from this
- Allow way to nest ring buffer calls in the same context
- Allow absolute time stamps in ring buffer
- Rewrite of filter code parsing based on Al Viro's suggestions
- Setting of trace_clock to global if TSC is unstable (on boot)
- Better OOM handling when allocating large ring buffers
- Added initcall tracepoints (consolidated initcall_debug code with them)
And other various fixes and clean ups
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Merge tag 'trace-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
"New features:
- Tom Zanussi's extended histogram work.
This adds the synthetic events to have histograms from multiple
event data Adds triggers "onmatch" and "onmax" to call the
synthetic events Several updates to the histogram code from this
- Allow way to nest ring buffer calls in the same context
- Allow absolute time stamps in ring buffer
- Rewrite of filter code parsing based on Al Viro's suggestions
- Setting of trace_clock to global if TSC is unstable (on boot)
- Better OOM handling when allocating large ring buffers
- Added initcall tracepoints (consolidated initcall_debug code with
them)
And other various fixes and clean ups"
* tag 'trace-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (68 commits)
init: Have initcall_debug still work without CONFIG_TRACEPOINTS
init, tracing: Have printk come through the trace events for initcall_debug
init, tracing: instrument security and console initcall trace events
init, tracing: Add initcall trace events
tracing: Add rcu dereference annotation for test func that touches filter->prog
tracing: Add rcu dereference annotation for filter->prog
tracing: Fixup logic inversion on setting trace_global_clock defaults
tracing: Hide global trace clock from lockdep
ring-buffer: Add set/clear_current_oom_origin() during allocations
ring-buffer: Check if memory is available before allocation
lockdep: Add print_irqtrace_events() to __warn
vsprintf: Do not preprocess non-dereferenced pointers for bprintf (%px and %pK)
tracing: Uninitialized variable in create_tracing_map_fields()
tracing: Make sure variable string fields are NULL-terminated
tracing: Add action comparisons when testing matching hist triggers
tracing: Don't add flag strings when displaying variable references
tracing: Fix display of hist trigger expressions containing timestamps
ftrace: Drop a VLA in module_exists()
tracing: Mention trace_clock=global when warning about unstable clocks
tracing: Default to using trace_global_clock if sched_clock is unstable
...
|
||
|
Christoph Hellwig
|
66bdb1478f |
swiotlb: Use dma_direct_supported() for swiotlb_ops
swiotlb_alloc() calls dma_direct_alloc(), which can satisfy lower than 32-bit
DMA mask requests using GFP_DMA if the architecture supports it. Various
x86 drivers rely on that, so we need to support that. At the same time
the whole kernel expects a 32-bit DMA mask to just work, so the other magic
in swiotlb_dma_supported() isn't actually needed either.
Reported-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: iommu@lists.linux-foundation.org
Fixes:
|
||
|
Linus Torvalds
|
49a695ba72 |
powerpc updates for 4.17
Notable changes:
- Support for 4PB user address space on 64-bit, opt-in via mmap().
- Removal of POWER4 support, which was accidentally broken in 2016 and no one
noticed, and blocked use of some modern instructions.
- Workarounds so that the hypervisor can enable Transactional Memory on Power9.
- A series to disable the DAWR (Data Address Watchpoint Register) on Power9.
- More information displayed in the meltdown/spectre_v1/v2 sysfs files.
- A vpermxor (Power8 Altivec) implementation for the raid6 Q Syndrome.
- A big series to make the allocation of our pacas (per cpu area), kernel page
tables, and per-cpu stacks NUMA aware when using the Radix MMU on Power9.
And as usual many fixes, reworks and cleanups.
Thanks to:
Aaro Koskinen, Alexandre Belloni, Alexey Kardashevskiy, Alistair Popple, Andy
Shevchenko, Aneesh Kumar K.V, Anshuman Khandual, Balbir Singh, Benjamin
Herrenschmidt, Christophe Leroy, Christophe Lombard, Cyril Bur, Daniel Axtens,
Dave Young, Finn Thain, Frederic Barrat, Gustavo Romero, Horia Geantă,
Jonathan Neuschäfer, Kees Cook, Larry Finger, Laurent Dufour, Laurent Vivier,
Logan Gunthorpe, Madhavan Srinivasan, Mark Greer, Mark Hairgrove, Markus
Elfring, Mathieu Malaterre, Matt Brown, Matt Evans, Mauricio Faria de
Oliveira, Michael Neuling, Naveen N. Rao, Nicholas Piggin, Paul Mackerras,
Philippe Bergheaud, Ram Pai, Rob Herring, Sam Bobroff, Segher Boessenkool,
Simon Guo, Simon Horman, Stewart Smith, Sukadev Bhattiprolu, Suraj Jitindar
Singh, Thiago Jung Bauermann, Vaibhav Jain, Vaidyanathan Srinivasan, Vasant
Hegde, Wei Yongjun.
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Merge tag 'powerpc-4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Notable changes:
- Support for 4PB user address space on 64-bit, opt-in via mmap().
- Removal of POWER4 support, which was accidentally broken in 2016
and no one noticed, and blocked use of some modern instructions.
- Workarounds so that the hypervisor can enable Transactional Memory
on Power9.
- A series to disable the DAWR (Data Address Watchpoint Register) on
Power9.
- More information displayed in the meltdown/spectre_v1/v2 sysfs
files.
- A vpermxor (Power8 Altivec) implementation for the raid6 Q
Syndrome.
- A big series to make the allocation of our pacas (per cpu area),
kernel page tables, and per-cpu stacks NUMA aware when using the
Radix MMU on Power9.
And as usual many fixes, reworks and cleanups.
Thanks to: Aaro Koskinen, Alexandre Belloni, Alexey Kardashevskiy,
Alistair Popple, Andy Shevchenko, Aneesh Kumar K.V, Anshuman Khandual,
Balbir Singh, Benjamin Herrenschmidt, Christophe Leroy, Christophe
Lombard, Cyril Bur, Daniel Axtens, Dave Young, Finn Thain, Frederic
Barrat, Gustavo Romero, Horia Geantă, Jonathan Neuschäfer, Kees Cook,
Larry Finger, Laurent Dufour, Laurent Vivier, Logan Gunthorpe,
Madhavan Srinivasan, Mark Greer, Mark Hairgrove, Markus Elfring,
Mathieu Malaterre, Matt Brown, Matt Evans, Mauricio Faria de Oliveira,
Michael Neuling, Naveen N. Rao, Nicholas Piggin, Paul Mackerras,
Philippe Bergheaud, Ram Pai, Rob Herring, Sam Bobroff, Segher
Boessenkool, Simon Guo, Simon Horman, Stewart Smith, Sukadev
Bhattiprolu, Suraj Jitindar Singh, Thiago Jung Bauermann, Vaibhav
Jain, Vaidyanathan Srinivasan, Vasant Hegde, Wei Yongjun"
* tag 'powerpc-4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (207 commits)
powerpc/64s/idle: Fix restore of AMOR on POWER9 after deep sleep
powerpc/64s: Fix POWER9 DD2.2 and above in cputable features
powerpc/64s: Fix pkey support in dt_cpu_ftrs, add CPU_FTR_PKEY bit
powerpc/64s: Fix dt_cpu_ftrs to have restore_cpu clear unwanted LPCR bits
Revert "powerpc/64s/idle: POWER9 ESL=0 stop avoid save/restore overhead"
powerpc: iomap.c: introduce io{read|write}64_{lo_hi|hi_lo}
powerpc: io.h: move iomap.h include so that it can use readq/writeq defs
cxl: Fix possible deadlock when processing page faults from cxllib
powerpc/hw_breakpoint: Only disable hw breakpoint if cpu supports it
powerpc/mm/radix: Update command line parsing for disable_radix
powerpc/mm/radix: Parse disable_radix commandline correctly.
powerpc/mm/hugetlb: initialize the pagetable cache correctly for hugetlb
powerpc/mm/radix: Update pte fragment count from 16 to 256 on radix
powerpc/mm/keys: Update documentation and remove unnecessary check
powerpc/64s/idle: POWER9 ESL=0 stop avoid save/restore overhead
powerpc/64s/idle: Consolidate power9_offline_stop()/power9_idle_stop()
powerpc/powernv: Always stop secondaries before reboot/shutdown
powerpc: hard disable irqs in smp_send_stop loop
powerpc: use NMI IPI for smp_send_stop
powerpc/powernv: Fix SMT4 forcing idle code
...
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||
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Linus Torvalds
|
3c0d551e02 |
pci-v4.17-changes
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R. Silva) - remove last user of pci_get_bus_and_slot() and the function itself (Sinan Kaya) - add decoding for 16 GT/s link speed (Jay Fang) - add interfaces to get max link speed and width (Tal Gilboa) - add pcie_bandwidth_capable() to compute max supported link bandwidth (Tal Gilboa) - add pcie_bandwidth_available() to compute bandwidth available to device (Tal Gilboa) - add pcie_print_link_status() to log link speed and whether it's limited (Tal Gilboa) - use PCI core interfaces to report when device performance may be limited by its slot instead of doing it in each driver (Tal Gilboa) - fix possible cpqphp NULL pointer dereference (Shawn Lin) - rescan more of the hierarchy on ACPI hotplug to fix Thunderbolt/xHCI hotplug (Mika Westerberg) - add support for PCI I/O port space that's neither directly accessible via CPU in/out instructions nor directly mapped into CPU physical memory space. This is fairly intrusive and includes minor changes to interfaces used for I/O space on most platforms (Zhichang Yuan, John Garry) - add support for HiSilicon Hip06/Hip07 LPC I/O space (Zhichang Yuan, John Garry) - use PCI_EXP_DEVCTL2_COMP_TIMEOUT in rapidio/tsi721 (Bjorn Helgaas) - remove possible NULL pointer dereference in of_pci_bus_find_domain_nr() (Shawn Lin) - report quirk timings with dev_info (Bjorn Helgaas) - report quirks that take longer than 10ms (Bjorn Helgaas) - add and use Altera Vendor ID (Johannes Thumshirn) - tidy Makefiles and comments (Bjorn Helgaas) - don't set up INTx if MSI or MSI-X is enabled to align cris, frv, ia64, and mn10300 with x86 (Bjorn Helgaas) - move pcieport_if.h to drivers/pci/pcie/ to encapsulate it (Frederick Lawler) - merge pcieport_if.h into portdrv.h (Bjorn Helgaas) - move workaround for BIOS PME issue from portdrv to PCI core (Bjorn Helgaas) - completely disable portdrv with "pcie_ports=compat" (Bjorn Helgaas) - remove portdrv link order dependency (Bjorn Helgaas) - remove support for unused VC portdrv service (Bjorn Helgaas) - simplify portdrv feature permission checking (Bjorn Helgaas) - remove "pcie_hp=nomsi" parameter (use "pci=nomsi" instead) (Bjorn Helgaas) - remove unnecessary "pcie_ports=auto" parameter (Bjorn Helgaas) - use cached AER capability offset (Frederick Lawler) - don't enable DPC if BIOS hasn't granted AER control (Mika Westerberg) - rename pcie-dpc.c to dpc.c (Bjorn Helgaas) - use generic pci_mmap_resource_range() instead of powerpc and xtensa arch-specific versions (David Woodhouse) - support arbitrary PCI host bridge offsets on sparc (Yinghai Lu) - remove System and Video ROM reservations on sparc (Bjorn Helgaas) - probe for device reset support during enumeration instead of runtime (Bjorn Helgaas) - add ACS quirk for Ampere (née APM) root ports (Feng Kan) - add function 1 DMA alias quirk for Marvell 88SE9220 (Thomas Vincent-Cross) - protect device restore with device lock (Sinan Kaya) - handle failure of FLR gracefully (Sinan Kaya) - handle CRS (config retry status) after device resets (Sinan Kaya) - skip various config reads for SR-IOV VFs as an optimization (KarimAllah Ahmed) - consolidate VPD code in vpd.c (Bjorn Helgaas) - add Tegra dependency on PCI_MSI_IRQ_DOMAIN (Arnd Bergmann) - add DT support for R-Car r8a7743 (Biju Das) - fix a PCI_EJECT vs PCI_BUS_RELATIONS race condition in Hyper-V host bridge driver that causes a general protection fault (Dexuan Cui) - fix Hyper-V host bridge hang in MSI setup on 1-vCPU VMs with SR-IOV (Dexuan Cui) - fix Hyper-V host bridge hang when ejecting a VF before setting up MSI (Dexuan Cui) - make several structures static (Fengguang Wu) - increase number of MSI IRQs supported by Synopsys DesignWare bridges from 32 to 256 (Gustavo Pimentel) - implemented multiplexed IRQ domain API and remove obsolete MSI IRQ API from DesignWare drivers (Gustavo Pimentel) - add Tegra power management support (Manikanta Maddireddy) - add Tegra loadable module support (Manikanta Maddireddy) - handle 64-bit BARs correctly in endpoint support (Niklas Cassel) - support optional regulator for HiSilicon STB (Shawn Guo) - use regulator bulk API for Qualcomm apq8064 (Srinivas Kandagatla) - support power supplies for Qualcomm msm8996 (Srinivas Kandagatla) * tag 'pci-v4.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (123 commits) MAINTAINERS: Add John Garry as maintainer for HiSilicon LPC driver HISI LPC: Add ACPI support ACPI / scan: Do not enumerate Indirect IO host children ACPI / scan: Rename acpi_is_serial_bus_slave() for more general use HISI LPC: Support the LPC host on Hip06/Hip07 with DT bindings of: Add missing I/O range exception for indirect-IO devices PCI: Apply the new generic I/O management on PCI IO hosts PCI: Add fwnode handler as input param of pci_register_io_range() PCI: Remove __weak tag from pci_register_io_range() MAINTAINERS: Add missing /drivers/pci/cadence directory entry fm10k: Report PCIe link properties with pcie_print_link_status() net/mlx5e: Use pcie_bandwidth_available() to compute bandwidth net/mlx5: Report PCIe link properties with pcie_print_link_status() net/mlx4_core: Report PCIe link properties with pcie_print_link_status() PCI: Add pcie_print_link_status() to log link speed and whether it's limited PCI: Add pcie_bandwidth_available() to compute bandwidth available to device misc: pci_endpoint_test: Handle 64-bit BARs properly PCI: designware-ep: Make dw_pcie_ep_reset_bar() handle 64-bit BARs properly PCI: endpoint: Make sure that BAR_5 does not have 64-bit flag set when clearing PCI: endpoint: Make epc->ops->clear_bar()/pci_epc_clear_bar() take struct *epf_bar ... |
||
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Linus Torvalds
|
3b54765cca |
Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton: - a few misc things - ocfs2 updates - the v9fs maintainers have been missing for a long time. I've taken over v9fs patch slinging. - most of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (116 commits) mm,oom_reaper: check for MMF_OOM_SKIP before complaining mm/ksm: fix interaction with THP mm/memblock.c: cast constant ULLONG_MAX to phys_addr_t headers: untangle kmemleak.h from mm.h include/linux/mmdebug.h: make VM_WARN* non-rvals mm/page_isolation.c: make start_isolate_page_range() fail if already isolated mm: change return type to vm_fault_t mm, oom: remove 3% bonus for CAP_SYS_ADMIN processes mm, page_alloc: wakeup kcompactd even if kswapd cannot free more memory kernel/fork.c: detect early free of a live mm mm: make counting of list_lru_one::nr_items lockless mm/swap_state.c: make bool enable_vma_readahead and swap_vma_readahead() static block_invalidatepage(): only release page if the full page was invalidated mm: kernel-doc: add missing parameter descriptions mm/swap.c: remove @cold parameter description for release_pages() mm/nommu: remove description of alloc_vm_area zram: drop max_zpage_size and use zs_huge_class_size() zsmalloc: introduce zs_huge_class_size() mm: fix races between swapoff and flush dcache fs/direct-io.c: minor cleanups in do_blockdev_direct_IO ... |
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Steven Rostedt (VMware)
|
1e6338cfb5 |
vsprintf: Do not preprocess non-dereferenced pointers for bprintf (%px and %pK)
Commit |
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Randy Dunlap
|
514c603249 |
headers: untangle kmemleak.h from mm.h
Currently <linux/slab.h> #includes <linux/kmemleak.h> for no obvious reason. It looks like it's only a convenience, so remove kmemleak.h from slab.h and add <linux/kmemleak.h> to any users of kmemleak_* that don't already #include it. Also remove <linux/kmemleak.h> from source files that do not use it. This is tested on i386 allmodconfig and x86_64 allmodconfig. It would be good to run it through the 0day bot for other $ARCHes. I have neither the horsepower nor the storage space for the other $ARCHes. Update: This patch has been extensively build-tested by both the 0day bot & kisskb/ozlabs build farms. Both of them reported 2 build failures for which patches are included here (in v2). [ slab.h is the second most used header file after module.h; kernel.h is right there with slab.h. There could be some minor error in the counting due to some #includes having comments after them and I didn't combine all of those. ] [akpm@linux-foundation.org: security/keys/big_key.c needs vmalloc.h, per sfr] Link: http://lkml.kernel.org/r/e4309f98-3749-93e1-4bb7-d9501a39d015@infradead.org Link: http://kisskb.ellerman.id.au/kisskb/head/13396/ Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Ingo Molnar <mingo@kernel.org> Reported-by: Michael Ellerman <mpe@ellerman.id.au> [2 build failures] Reported-by: Fengguang Wu <fengguang.wu@intel.com> [2 build failures] Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Wei Yongjun <weiyongjun1@huawei.com> Cc: Luis R. Rodriguez <mcgrof@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Mimi Zohar <zohar@linux.vnet.ibm.com> Cc: John Johansen <john.johansen@canonical.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
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Yury Norov
|
8351760ff5 |
lib: fix stall in __bitmap_parselist()
syzbot is catching stalls at __bitmap_parselist()
(https://syzkaller.appspot.com/bug?id=ad7e0351fbc90535558514a71cd3edc11681997a).
The trigger is
unsigned long v = 0;
bitmap_parselist("7:,", &v, BITS_PER_LONG);
which results in hitting infinite loop at
while (a <= b) {
off = min(b - a + 1, used_size);
bitmap_set(maskp, a, off);
a += group_size;
}
due to used_size == group_size == 0.
Link: http://lkml.kernel.org/r/20180404162647.15763-1-ynorov@caviumnetworks.com
Fixes:
|
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Linus Torvalds
|
357aa6aefe |
Merge branch 'for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk
Pull printk updates from Petr Mladek: - Add info about loaded kdump kernel into the dump stack header - Move dump-stack related code from printk.c to lib/dump_stack.c - Write message about suspending consoles in KERN_INFO log level * 'for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk: printk: change message to pr_info printk: move dump stack related code to lib/dump_stack.c print kdump kernel loaded status in stack dump |
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Linus Torvalds
|
3526dd0c78 |
for-4.17/block-20180402
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Merge tag 'for-4.17/block-20180402' of git://git.kernel.dk/linux-block
Pull block layer updates from Jens Axboe:
"It's a pretty quiet round this time, which is nice. This contains:
- series from Bart, cleaning up the way we set/test/clear atomic
queue flags.
- series from Bart, fixing races between gendisk and queue
registration and removal.
- set of bcache fixes and improvements from various folks, by way of
Michael Lyle.
- set of lightnvm updates from Matias, most of it being the 1.2 to
2.0 transition.
- removal of unused DIO flags from Nikolay.
- blk-mq/sbitmap memory ordering fixes from Omar.
- divide-by-zero fix for BFQ from Paolo.
- minor documentation patches from Randy.
- timeout fix from Tejun.
- Alpha "can't write a char atomically" fix from Mikulas.
- set of NVMe fixes by way of Keith.
- bsg and bsg-lib improvements from Christoph.
- a few sed-opal fixes from Jonas.
- cdrom check-disk-change deadlock fix from Maurizio.
- various little fixes, comment fixes, etc from various folks"
* tag 'for-4.17/block-20180402' of git://git.kernel.dk/linux-block: (139 commits)
blk-mq: Directly schedule q->timeout_work when aborting a request
blktrace: fix comment in blktrace_api.h
lightnvm: remove function name in strings
lightnvm: pblk: remove some unnecessary NULL checks
lightnvm: pblk: don't recover unwritten lines
lightnvm: pblk: implement 2.0 support
lightnvm: pblk: implement get log report chunk
lightnvm: pblk: rename ppaf* to addrf*
lightnvm: pblk: check for supported version
lightnvm: implement get log report chunk helpers
lightnvm: make address conversions depend on generic device
lightnvm: add support for 2.0 address format
lightnvm: normalize geometry nomenclature
lightnvm: complete geo structure with maxoc*
lightnvm: add shorten OCSSD version in geo
lightnvm: add minor version to generic geometry
lightnvm: simplify geometry structure
lightnvm: pblk: refactor init/exit sequences
lightnvm: Avoid validation of default op value
lightnvm: centralize permission check for lightnvm ioctl
...
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Linus Torvalds
|
672a9c1069 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree updates from Jiri Kosina. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: kfifo: fix inaccurate comment tools/thermal: tmon: fix for segfault net: Spelling s/stucture/structure/ edd: don't spam log if no EDD information is present Documentation: Fix early-microcode.txt references after file rename tracing: Block comments should align the * on each line treewide: Fix typos in printk GenWQE: Fix a typo in two comments treewide: Align function definition open/close braces |
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Linus Torvalds
|
06dd3dfeea |
Char/Misc patches for 4.17-rc1
Here is the big set of char/misc driver patches for 4.17-rc1.
There are a lot of little things in here, nothing huge, but all
important to the different hardware types involved:
- thunderbolt driver updates
- parport updates (people still care...)
- nvmem driver updates
- mei updates (as always)
- hwtracing driver updates
- hyperv driver updates
- extcon driver updates
- and a handfull of even smaller driver subsystem and individual
driver updates
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc updates from Greg KH:
"Here is the big set of char/misc driver patches for 4.17-rc1.
There are a lot of little things in here, nothing huge, but all
important to the different hardware types involved:
- thunderbolt driver updates
- parport updates (people still care...)
- nvmem driver updates
- mei updates (as always)
- hwtracing driver updates
- hyperv driver updates
- extcon driver updates
- ... and a handful of even smaller driver subsystem and individual
driver updates
All of these have been in linux-next with no reported issues"
* tag 'char-misc-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (149 commits)
hwtracing: Add HW tracing support menu
intel_th: Add ACPI glue layer
intel_th: Allow forcing host mode through drvdata
intel_th: Pick up irq number from resources
intel_th: Don't touch switch routing in host mode
intel_th: Use correct method of finding hub
intel_th: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate
stm class: Make dummy's master/channel ranges configurable
stm class: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate
MAINTAINERS: Bestow upon myself the care for drivers/hwtracing
hv: add SPDX license id to Kconfig
hv: add SPDX license to trace
Drivers: hv: vmbus: do not mark HV_PCIE as perf_device
Drivers: hv: vmbus: respect what we get from hv_get_synint_state()
/dev/mem: Avoid overwriting "err" in read_mem()
eeprom: at24: use SPDX identifier instead of GPL boiler-plate
eeprom: at24: simplify the i2c functionality checking
eeprom: at24: fix a line break
eeprom: at24: tweak newlines
eeprom: at24: refactor at24_probe()
...
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||
|
Linus Torvalds
|
38047d5c26 |
Driver core patches for 4.17-rc1
Here is the "big" set of driver core patches for 4.17-rc1. There's really not much here, just a bunch of firmware code refactoring from Luis as he attempts to wrangle that codebase into something that is managable, along with a bunch of userspace tests for it. Other than that, a handful of small bugfixes and reverts of things that didn't work out. Full details are in the shortlog, it's not all that much. All of these have been in linux-next for a while with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCWsSiGg8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ylPpACgyEKOur8rwp/3uBRxqhoFeWp1RtAAoIvlMjn6 MQ8LIeHNLRnpqGX5L78L =93HA -----END PGP SIGNATURE----- Merge tag 'driver-core-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the "big" set of driver core patches for 4.17-rc1. There's really not much here, just a bunch of firmware code refactoring from Luis as he attempts to wrangle that codebase into something that is managable, along with a bunch of userspace tests for it. Other than that, a handful of small bugfixes and reverts of things that didn't work out. Full details are in the shortlog, it's not all that much. All of these have been in linux-next for a while with no reported issues" * tag 'driver-core-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (30 commits) drivers: base: remove check for callback in coredump_store() mt7601u: use firmware_request_cache() to address cache on reboot firmware: add firmware_request_cache() to help with cache on reboot firmware: fix typo on pr_info_once() when ignore_sysfs_fallback is used firmware: explicitly include vmalloc.h firmware: ensure the firmware cache is not used on incompatible calls test_firmware: modify custom fallback tests to use unique files firmware: add helper to check to see if fw cache is setup firmware: fix checking for return values for fw_add_devm_name() rename: _request_firmware_load() fw_load_sysfs_fallback() test_firmware: test three firmware kernel configs using a proc knob test_firmware: expand on library with shared helpers firmware: enable to force disable the fallback mechanism at run time firmware: enable run time change of forcing fallback loader firmware: move firmware loader into its own directory firmware: split firmware fallback functionality into its own file firmware: move loading timeout under struct firmware_fallback_config firmware: use helpers for setting up a temporary cache timeout firmware: simplify CONFIG_FW_LOADER_USER_HELPER_FALLBACK further drivers: base: add description for .coredump() callback ... |
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Linus Torvalds
|
df34df483a |
Staging/IIO patches for 4.17-rc1
Here is the big set of Staging/IIO driver patches for 4.17-rc1. It is a lot, over 500 changes, but not huge by previous kernel release standards. We deleted more lines than we added again (27k added vs. 91k remvoed), thanks to finally being able to delete the IRDA drivers and networking code. We also deleted the ccree crypto driver, but that's coming back in through the crypto tree to you, in a much cleaned-up form. Added this round is at lot of "mt7621" device support, which is for an embedded device that Neil Brown cares about, and of course a handful of new IIO drivers as well. And finally, the fsl-mc core code moved out of the staging tree to the "real" part of the kernel, which is nice to see happen as well. Full details are in the shortlog, which has all of the tiny cleanup patches described. All of these have been in linux-next for a while with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCWsSnAA8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+yn60ACgxKvU/5XBP14hBkBpAcD0Q43OHe0AniEti65M Kw03GWK3NNM3pzk49BjZ =sj3K -----END PGP SIGNATURE----- Merge tag 'staging-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging/IIO updates from Greg KH: "Here is the big set of Staging/IIO driver patches for 4.17-rc1. It is a lot, over 500 changes, but not huge by previous kernel release standards. We deleted more lines than we added again (27k added vs. 91k remvoed), thanks to finally being able to delete the IRDA drivers and networking code. We also deleted the ccree crypto driver, but that's coming back in through the crypto tree to you, in a much cleaned-up form. Added this round is at lot of "mt7621" device support, which is for an embedded device that Neil Brown cares about, and of course a handful of new IIO drivers as well. And finally, the fsl-mc core code moved out of the staging tree to the "real" part of the kernel, which is nice to see happen as well. Full details are in the shortlog, which has all of the tiny cleanup patches described. All of these have been in linux-next for a while with no reported issues" * tag 'staging-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (579 commits) staging: rtl8723bs: Remove yield call, replace with cond_resched() staging: rtl8723bs: Replace yield() call with cond_resched() staging: rtl8723bs: Remove unecessary newlines from 'odm.h'. staging: rtl8723bs: Rework 'struct _ODM_Phy_Status_Info_' coding style. staging: rtl8723bs: Rework 'struct _ODM_Per_Pkt_Info_' coding style. staging: rtl8723bs: Replace NULL pointer comparison with '!'. staging: rtl8723bs: Factor out rtl8723bs_recv_tasklet() sections. staging: rtl8723bs: Fix function signature that goes over 80 characters. staging: rtl8723bs: Fix lines too long in update_recvframe_attrib(). staging: rtl8723bs: Remove unnecessary blank lines in 'rtl8723bs_recv.c'. staging: rtl8723bs: Change camel case to snake case in 'rtl8723bs_recv.c'. staging: rtl8723bs: Add missing braces in else statement. staging: rtl8723bs: Add spaces around ternary operators. staging: rtl8723bs: Fix lines with trailing open parentheses. staging: rtl8723bs: Remove unnecessary length #define's. staging: rtl8723bs: Fix IEEE80211 authentication algorithm constants. staging: rtl8723bs: Fix alignment in rtw_wx_set_auth(). staging: rtl8723bs: Remove braces from single statement conditionals. staging: rtl8723bs: Remove unecessary braces from switch statement. staging: rtl8723bs: Fix newlines in rtw_wx_set_auth(). ... |
||
|
Linus Torvalds
|
94514bbe9e |
for-4.17-tag
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Merge tag 'for-4.17-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"There are a several user visible changes, the rest is mostly invisible
and continues to clean up the whole code base.
User visible changes:
- new mount option nossd_spread (pair for ssd_spread)
- mount option subvolid will detect junk after the number and fail
the mount
- add message after cancelled device replace
- direct module dependency on libcrc32, removed own crc wrappers
- removed user space transaction ioctls
- use lighter locking when reading /proc/self/mounts, RCU instead of
mutex to avoid unnecessary contention
Enhancements:
- skip writeback of last page when truncating file to same size
- send: do not issue unnecessary truncate operations
- mount option token specifiers: use %u for unsigned values, more
validation
- selftests: more tree block validations
qgroups:
- preparatory work for splitting reservation types for data and
metadata, this should allow for more accurate tracking and fix some
issues with underflows or do further enhancements
- split metadata reservations for started and joined transaction so
they do not get mixed up and are accounted correctly at commit time
- with the above, it's possible to revert patch that potentially
deadlocks when trying to make more space by explicitly committing
when the quota limit is hit
- fix root item corruption when multiple same source snapshots are
created with quota enabled
RAID56:
- make sure target is identical to source when raid56 rebuild fails
after dev-replace
- faster rebuild during scrub, batch by stripes and not
block-by-block
- make more use of cached data when rebuilding from a missing device
Fixes:
- null pointer deref when device replace target is missing
- fix fsync after hole punching when using no-holes feature
- fix lockdep splat when allocating percpu data with wrong GFP flags
Cleanups, refactoring, core changes:
- drop redunant parameters from various functions
- kill and opencode trivial helpers
- __cold/__exit function annotations
- dead code removal
- continued audit and documentation of memory barriers
- error handling: handle removal from uuid tree
- error handling: remove handling of impossible condtitons
- more debugging or error messages
- updated tracepoints
- one VLA use removal (and one still left)"
* tag 'for-4.17-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (164 commits)
btrfs: lift errors from add_extent_changeset to the callers
Btrfs: print error messages when failing to read trees
btrfs: user proper type for btrfs_mask_flags flags
btrfs: split dev-replace locking helpers for read and write
btrfs: remove stale comments about fs_mutex
btrfs: use RCU in btrfs_show_devname for device list traversal
btrfs: update barrier in should_cow_block
btrfs: use lockdep_assert_held for mutexes
btrfs: use lockdep_assert_held for spinlocks
btrfs: Validate child tree block's level and first key
btrfs: tests/qgroup: Fix wrong tree backref level
Btrfs: fix copy_items() return value when logging an inode
Btrfs: fix fsync after hole punching when using no-holes feature
btrfs: use helper to set ulist aux from a qgroup
Revert "btrfs: qgroups: Retry after commit on getting EDQUOT"
btrfs: qgroup: Update trace events for metadata reservation
btrfs: qgroup: Use root::qgroup_meta_rsv_* to record qgroup meta reserved space
btrfs: delayed-inode: Use new qgroup meta rsv for delayed inode and item
btrfs: qgroup: Use separate meta reservation type for delalloc
btrfs: qgroup: Introduce function to convert META_PREALLOC into META_PERTRANS
...
|
||
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Linus Torvalds
|
3b24b83763 |
Kbuild updates for v4.17
- add a shell script to get Clang version - improve portability of build scripts - drop always-enabled CONFIG_THIN_ARCHIVE and remove unused code - rename built-in.o which is now thin archive to built-in.a - process clean/build targets one by one to get along with -j option - simplify ld-option - improve building with CONFIG_TRIM_UNUSED_KSYMS - define KBUILD_MODNAME even for objects shared among multiple modules - avoid linking multiple instances of same objects from composite objects - move <linux/compiler_types.h> to c_flags to include it only for C files - clean-up various Makefiles -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJaw6eWAAoJED2LAQed4NsGrK8QAJmbYg83TTNoOgQRK/7Lg+sj KL1+RGFxmdHRVOqG5n18L7Q4LmTD19tUFNQImrQTTrKrbH2vbMSTF2PfzdmDRwMz R5vW5+wsagfhSttOce/GR4p9+bM9XEclzEa3liqNVQxijOFXmkV14pn0x5anYfeB ABthxFFHcVn3exP/q3lmq048x1yNE71wUU5WQIWf6V/ZKf+++wQU8r7HpnATWYeO vtf8gZq+xyLLjhxoJF6n6olSZXI7Yhz4jV2G68/VroS312AUFWPogK+cSshWGlSw zGixM1q55oj9CXjZ37nR6pTzQhSZLf/uHX5beatlpeoJ4Hho6HlIABvx2oEnat7b o5RW64RB0gVJqlYZdKxL29HNrovr9tlWPTaIPGFRvWDpl3c1w+rMKXE+5hwu8jMJ 2jgxd5FZCgBaDsAKojmeQR7PAo2ffAdUO0Dj/SuAaMOpuHWHcnJk9kIN2PUrC+Sf d/H2soT9x+60KbQmtCEo5VfEN8bvNP3+ZSnadEG/gRN2IIa5FZAUQykU+i50gAvj tuKAokdRGZHvXM+buYFBfN6RbhVCXzBF/fAG7r37QVR2u1zaUszmgFOUqERhTQfm RNnyeAs9G9rljtna/AD7cIOdKTg8oETPISxt8Y6EzNMpI8PhF0aGoxso3yD19oH1 M+fq55RigsR48Kic40hY =N5BL -----END PGP SIGNATURE----- Merge tag 'kbuild-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - add a shell script to get Clang version - improve portability of build scripts - drop always-enabled CONFIG_THIN_ARCHIVE and remove unused code - rename built-in.o which is now thin archive to built-in.a - process clean/build targets one by one to get along with -j option - simplify ld-option - improve building with CONFIG_TRIM_UNUSED_KSYMS - define KBUILD_MODNAME even for objects shared among multiple modules - avoid linking multiple instances of same objects from composite objects - move <linux/compiler_types.h> to c_flags to include it only for C files - clean-up various Makefiles * tag 'kbuild-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (29 commits) kbuild: get <linux/compiler_types.h> out of <linux/kconfig.h> kbuild: clean up link rule of composite modules kbuild: clean up archive rule of built-in.a kbuild: remove partial section mismatch detection for built-in.a net: liquidio: clean up Makefile for simpler composite object handling lib: zstd: clean up Makefile for simpler composite object handling kbuild: link $(real-obj-y) instead of $(obj-y) into built-in.a kbuild: rename real-objs-y/m to real-obj-y/m kbuild: move modname and modname-multi close to modname_flags kbuild: simplify modname calculation kbuild: fix modname for composite modules kbuild: define KBUILD_MODNAME even if multiple modules share objects kbuild: remove unnecessary $(subst $(obj)/, , ...) in modname-multi kbuild: Use ls(1) instead of stat(1) to obtain file size kbuild: link vmlinux only once for CONFIG_TRIM_UNUSED_KSYMS kbuild: move include/config/ksym/* to include/ksym/* kbuild: move CONFIG_TRIM_UNUSED_KSYMS code unneeded for external module kbuild: restore autoksyms.h touch to the top Makefile kbuild: move 'scripts' target below kbuild: remove wrong 'touch' in adjust_autoksyms.sh ... |
||
|
Linus Torvalds
|
5bb053bef8 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
1) Support offloading wireless authentication to userspace via
NL80211_CMD_EXTERNAL_AUTH, from Srinivas Dasari.
2) A lot of work on network namespace setup/teardown from Kirill Tkhai.
Setup and cleanup of namespaces now all run asynchronously and thus
performance is significantly increased.
3) Add rx/tx timestamping support to mv88e6xxx driver, from Brandon
Streiff.
4) Support zerocopy on RDS sockets, from Sowmini Varadhan.
5) Use denser instruction encoding in x86 eBPF JIT, from Daniel
Borkmann.
6) Support hw offload of vlan filtering in mvpp2 dreiver, from Maxime
Chevallier.
7) Support grafting of child qdiscs in mlxsw driver, from Nogah
Frankel.
8) Add packet forwarding tests to selftests, from Ido Schimmel.
9) Deal with sub-optimal GSO packets better in BBR congestion control,
from Eric Dumazet.
10) Support 5-tuple hashing in ipv6 multipath routing, from David Ahern.
11) Add path MTU tests to selftests, from Stefano Brivio.
12) Various bits of IPSEC offloading support for mlx5, from Aviad
Yehezkel, Yossi Kuperman, and Saeed Mahameed.
13) Support RSS spreading on ntuple filters in SFC driver, from Edward
Cree.
14) Lots of sockmap work from John Fastabend. Applications can use eBPF
to filter sendmsg and sendpage operations.
15) In-kernel receive TLS support, from Dave Watson.
16) Add XDP support to ixgbevf, this is significant because it should
allow optimized XDP usage in various cloud environments. From Tony
Nguyen.
17) Add new Intel E800 series "ice" ethernet driver, from Anirudh
Venkataramanan et al.
18) IP fragmentation match offload support in nfp driver, from Pieter
Jansen van Vuuren.
19) Support XDP redirect in i40e driver, from Björn Töpel.
20) Add BPF_RAW_TRACEPOINT program type for accessing the arguments of
tracepoints in their raw form, from Alexei Starovoitov.
21) Lots of striding RQ improvements to mlx5 driver with many
performance improvements, from Tariq Toukan.
22) Use rhashtable for inet frag reassembly, from Eric Dumazet.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1678 commits)
net: mvneta: improve suspend/resume
net: mvneta: split rxq/txq init and txq deinit into SW and HW parts
ipv6: frags: fix /proc/sys/net/ipv6/ip6frag_low_thresh
net: bgmac: Fix endian access in bgmac_dma_tx_ring_free()
net: bgmac: Correctly annotate register space
route: check sysctl_fib_multipath_use_neigh earlier than hash
fix typo in command value in drivers/net/phy/mdio-bitbang.
sky2: Increase D3 delay to sky2 stops working after suspend
net/mlx5e: Set EQE based as default TX interrupt moderation mode
ibmvnic: Disable irqs before exiting reset from closed state
net: sched: do not emit messages while holding spinlock
vlan: also check phy_driver ts_info for vlan's real device
Bluetooth: Mark expected switch fall-throughs
Bluetooth: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for BTUSB_QCA_ROME
Bluetooth: btrsi: remove unused including <linux/version.h>
Bluetooth: hci_bcm: Remove DMI quirk for the MINIX Z83-4
sh_eth: kill useless check in __sh_eth_get_regs()
sh_eth: add sh_eth_cpu_data::no_xdfar flag
ipv6: factorize sk_wmem_alloc updates done by __ip6_append_data()
ipv4: factorize sk_wmem_alloc updates done by __ip_append_data()
...
|
||
|
Linus Torvalds
|
f5a8eb632b |
arch: remove obsolete architecture ports
This removes the entire architecture code for blackfin, cris, frv, m32r, metag, mn10300, score, and tile, including the associated device drivers. I have been working with the (former) maintainers for each one to ensure that my interpretation was right and the code is definitely unused in mainline kernels. Many had fond memories of working on the respective ports to start with and getting them included in upstream, but also saw no point in keeping the port alive without any users. In the end, it seems that while the eight architectures are extremely different, they all suffered the same fate: There was one company in charge of an SoC line, a CPU microarchitecture and a software ecosystem, which was more costly than licensing newer off-the-shelf CPU cores from a third party (typically ARM, MIPS, or RISC-V). It seems that all the SoC product lines are still around, but have not used the custom CPU architectures for several years at this point. In contrast, CPU instruction sets that remain popular and have actively maintained kernel ports tend to all be used across multiple licensees. The removal came out of a discussion that is now documented at https://lwn.net/Articles/748074/. Unlike the original plans, I'm not marking any ports as deprecated but remove them all at once after I made sure that they are all unused. Some architectures (notably tile, mn10300, and blackfin) are still being shipped in products with old kernels, but those products will never be updated to newer kernel releases. After this series, we still have a few architectures without mainline gcc support: - unicore32 and hexagon both have very outdated gcc releases, but the maintainers promised to work on providing something newer. At least in case of hexagon, this will only be llvm, not gcc. - openrisc, risc-v and nds32 are still in the process of finishing their support or getting it added to mainline gcc in the first place. They all have patched gcc-7.3 ports that work to some degree, but complete upstream support won't happen before gcc-8.1. Csky posted their first kernel patch set last week, their situation will be similar. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJawdL2AAoJEGCrR//JCVInuH0P/RJAZh1nTD+TR34ZhJq2TBoo PgygwDU7Z2+tQVU+EZ453Gywz9/NMRFk1RWAZqrLix4ZtyIMvC6A1qfT2yH1Y7Fb Qh6tccQeLe4ezq5u4S/46R/fQXu3Txr92yVwzJJUuPyU0arF9rv5MmI8e6p7L1en yb74kSEaCe+/eMlsEj1Cc1dgthDNXGKIURHkRsILoweysCpesjiTg4qDcL+yTibV FP2wjVbniKESMKS6qL71tiT5sexvLsLwMNcGiHPj94qCIQuI7DLhLdBVsL5Su6gI sbtgv0dsq4auRYAbQdMaH1hFvu6WptsuttIbOMnz2Yegi2z28H8uVXkbk2WVLbqG ZESUwutGh8MzOL2RJ4jyyQq5sfo++CRGlfKjr6ImZRv03dv0pe/W85062cK5cKNs cgDDJjGRorOXW7dyU6jG2gRqODOQBObIv3w5efdq5OgzOWlbI4EC+Y5u1Z0JF/76 pSwtGXA6YhwC+9LLAlnVTHG+yOwuLmAICgoKcTbzTVDKA2YQZG/cYuQfI5S1wD8e X6urPx3Md2GCwLXQ9mzKBzKZUpu/Tuhx0NvwF4qVxy6x1PELjn68zuP7abDHr46r 57/09ooVN+iXXnEGMtQVS/OPvYHSa2NgTSZz6Y86lCRbZmUOOlK31RDNlMvYNA+s 3iIVHovno/JuJnTOE8LY =fQ8z -----END PGP SIGNATURE----- Merge tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pul removal of obsolete architecture ports from Arnd Bergmann: "This removes the entire architecture code for blackfin, cris, frv, m32r, metag, mn10300, score, and tile, including the associated device drivers. I have been working with the (former) maintainers for each one to ensure that my interpretation was right and the code is definitely unused in mainline kernels. Many had fond memories of working on the respective ports to start with and getting them included in upstream, but also saw no point in keeping the port alive without any users. In the end, it seems that while the eight architectures are extremely different, they all suffered the same fate: There was one company in charge of an SoC line, a CPU microarchitecture and a software ecosystem, which was more costly than licensing newer off-the-shelf CPU cores from a third party (typically ARM, MIPS, or RISC-V). It seems that all the SoC product lines are still around, but have not used the custom CPU architectures for several years at this point. In contrast, CPU instruction sets that remain popular and have actively maintained kernel ports tend to all be used across multiple licensees. [ See the new nds32 port merged in the previous commit for the next generation of "one company in charge of an SoC line, a CPU microarchitecture and a software ecosystem" - Linus ] The removal came out of a discussion that is now documented at https://lwn.net/Articles/748074/. Unlike the original plans, I'm not marking any ports as deprecated but remove them all at once after I made sure that they are all unused. Some architectures (notably tile, mn10300, and blackfin) are still being shipped in products with old kernels, but those products will never be updated to newer kernel releases. After this series, we still have a few architectures without mainline gcc support: - unicore32 and hexagon both have very outdated gcc releases, but the maintainers promised to work on providing something newer. At least in case of hexagon, this will only be llvm, not gcc. - openrisc, risc-v and nds32 are still in the process of finishing their support or getting it added to mainline gcc in the first place. They all have patched gcc-7.3 ports that work to some degree, but complete upstream support won't happen before gcc-8.1. Csky posted their first kernel patch set last week, their situation will be similar [ Palmer Dabbelt points out that RISC-V support is in mainline gcc since gcc-7, although gcc-7.3.0 is the recommended minimum - Linus ]" This really says it all: 2498 files changed, 95 insertions(+), 467668 deletions(-) * tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits) MAINTAINERS: UNICORE32: Change email account staging: iio: remove iio-trig-bfin-timer driver tty: hvc: remove tile driver tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers serial: remove tile uart driver serial: remove m32r_sio driver serial: remove blackfin drivers serial: remove cris/etrax uart drivers usb: Remove Blackfin references in USB support usb: isp1362: remove blackfin arch glue usb: musb: remove blackfin port usb: host: remove tilegx platform glue pwm: remove pwm-bfin driver i2c: remove bfin-twi driver spi: remove blackfin related host drivers watchdog: remove bfin_wdt driver can: remove bfin_can driver mmc: remove bfin_sdh driver input: misc: remove blackfin rotary driver input: keyboard: remove bf54x driver ... |
||
|
Linus Torvalds
|
2fcd2b306a |
Merge branch 'x86-dma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 dma mapping updates from Ingo Molnar:
"This tree, by Christoph Hellwig, switches over the x86 architecture to
the generic dma-direct and swiotlb code, and also unifies more of the
dma-direct code between architectures. The now unused x86-only
primitives are removed"
* 'x86-dma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
dma-mapping: Don't clear GFP_ZERO in dma_alloc_attrs
swiotlb: Make swiotlb_{alloc,free}_buffer depend on CONFIG_DMA_DIRECT_OPS
dma/swiotlb: Remove swiotlb_{alloc,free}_coherent()
dma/direct: Handle force decryption for DMA coherent buffers in common code
dma/direct: Handle the memory encryption bit in common code
dma/swiotlb: Remove swiotlb_set_mem_attributes()
set_memory.h: Provide set_memory_{en,de}crypted() stubs
x86/dma: Remove dma_alloc_coherent_gfp_flags()
iommu/intel-iommu: Enable CONFIG_DMA_DIRECT_OPS=y and clean up intel_{alloc,free}_coherent()
iommu/amd_iommu: Use CONFIG_DMA_DIRECT_OPS=y and dma_direct_{alloc,free}()
x86/dma/amd_gart: Use dma_direct_{alloc,free}()
x86/dma/amd_gart: Look at dev->coherent_dma_mask instead of GFP_DMA
x86/dma: Use generic swiotlb_ops
x86/dma: Use DMA-direct (CONFIG_DMA_DIRECT_OPS=y)
x86/dma: Remove dma_alloc_coherent_mask()
|
||
|
Linus Torvalds
|
701f3b3149 |
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"The main changes in the locking subsystem in this cycle were:
- Add the Linux Kernel Memory Consistency Model (LKMM) subsystem,
which is an an array of tools in tools/memory-model/ that formally
describe the Linux memory coherency model (a.k.a.
Documentation/memory-barriers.txt), and also produce 'litmus tests'
in form of kernel code which can be directly executed and tested.
Here's a high level background article about an earlier version of
this work on LWN.net:
https://lwn.net/Articles/718628/
The design principles:
"There is reason to believe that Documentation/memory-barriers.txt
could use some help, and a major purpose of this patch is to
provide that help in the form of a design-time tool that can
produce all valid executions of a small fragment of concurrent
Linux-kernel code, which is called a "litmus test". This tool's
functionality is roughly similar to a full state-space search.
Please note that this is a design-time tool, not useful for
regression testing. However, we hope that the underlying
Linux-kernel memory model will be incorporated into other tools
capable of analyzing large bodies of code for regression-testing
purposes."
[...]
"A second tool is klitmus7, which converts litmus tests to
loadable kernel modules for direct testing. As with herd7, the
klitmus7 code is freely available from
http://diy.inria.fr/sources/index.html
(and via "git" at https://github.com/herd/herdtools7)"
[...]
Credits go to:
"This patch was the result of a most excellent collaboration
founded by Jade Alglave and also including Alan Stern, Andrea
Parri, and Luc Maranget."
... and to the gents listed in the MAINTAINERS entry:
LINUX KERNEL MEMORY CONSISTENCY MODEL (LKMM)
M: Alan Stern <stern@rowland.harvard.edu>
M: Andrea Parri <parri.andrea@gmail.com>
M: Will Deacon <will.deacon@arm.com>
M: Peter Zijlstra <peterz@infradead.org>
M: Boqun Feng <boqun.feng@gmail.com>
M: Nicholas Piggin <npiggin@gmail.com>
M: David Howells <dhowells@redhat.com>
M: Jade Alglave <j.alglave@ucl.ac.uk>
M: Luc Maranget <luc.maranget@inria.fr>
M: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
The LKMM project already found several bugs in Linux locking
primitives and improved the understanding and the documentation of
the Linux memory model all around.
- Add KASAN instrumentation to atomic APIs (Dmitry Vyukov)
- Add RWSEM API debugging and reorganize the lock debugging Kconfig
(Waiman Long)
- ... misc cleanups and other smaller changes"
* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
locking/Kconfig: Restructure the lock debugging menu
locking/Kconfig: Add LOCK_DEBUGGING_SUPPORT to make it more readable
locking/rwsem: Add DEBUG_RWSEMS to look for lock/unlock mismatches
lockdep: Make the lock debug output more useful
locking/rtmutex: Handle non enqueued waiters gracefully in remove_waiter()
locking/atomic, asm-generic, x86: Add comments for atomic instrumentation
locking/atomic, asm-generic: Add KASAN instrumentation to atomic operations
locking/atomic/x86: Switch atomic.h to use atomic-instrumented.h
locking/atomic, asm-generic: Add asm-generic/atomic-instrumented.h
locking/xchg/alpha: Remove superfluous memory barriers from the _local() variants
tools/memory-model: Finish the removal of rb-dep, smp_read_barrier_depends(), and lockless_dereference()
tools/memory-model: Add documentation of new litmus test
tools/memory-model: Remove mention of docker/gentoo image
locking/memory-barriers: De-emphasize smp_read_barrier_depends() some more
locking/lockdep: Show unadorned pointers
mutex: Drop linkage.h from mutex.h
tools/memory-model: Remove rb-dep, smp_read_barrier_depends, and lockless_dereference
tools/memory-model: Convert underscores to hyphens
tools/memory-model: Add a S lock-based external-view litmus test
tools/memory-model: Add required herd7 version to README file
...
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