An issue was introduced with "cxl: Unmap MMIO regions when detaching a
context" (b123429e6a) where closing a
context normally could also unmap the problem state area of other
contexts currently using the AFU.
It was also discovered that after a context's MMIO space had been
unmapped it would read 0s when accessing it, whereas the expected
behaviour was for the access to fail altogether.
In order to address these issues, this patch does two things:
- Forced mmap unmapping is only done when we are forcefully detaching
all contexts, and not in the normal detach path. Since the normal
context close path is tied to the file release any mmaps must have
already been released so we don't need to worry in that case.
- The mmap path now uses a vm_operations_struct with a fault handler.
The fault handler ensures that the context is in started state,
otherwise it fails the access attempt with a SIGBUS.
Fixes: b123429e6a ("cxl: Unmap MMIO regions when detaching a context")
Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Patch c49f63530b ("powernv: Add OPAL tracepoints") has a spurious
store to the stack:
ld r12,opal_tracepoint_refcount@toc(r2); \
std r12,32(r1); \
The store was originally used to save the current tracepoint status
so the entry and the exit tracepoints were always balanced. In the
end I just created a separate path when tracepoints are enabled.
The offset on the stack used for this store is not valid for ABIv2
and it causes strange issues. I noticed it because OPAL console input
was broken.
Fixes: c49f63530b ("powernv: Add OPAL tracepoints")
Cc: <stable@vger.kernel.org> # v3.17+
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
iwlwifi:
* fix for 7265D NVM check
* fixes for scan: fix long scanning times and network discovery
* new firmware API for iwlmvm supported devices
* fixes in rate control
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Merge tag 'wireless-drivers-for-davem-2015-01-09' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
* rtlwifi: fix a regression in large skb allocation failure
iwlwifi:
* fix for 7265D NVM check
* fixes for scan: fix long scanning times and network discovery
* new firmware API for iwlmvm supported devices
* fixes in rate control
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
netfilter/ipvs fixes for net
The following patchset contains netfilter/ipvs fixes, they are:
1) Small fix for the FTP helper in IPVS, a diff variable may be left
unset when CONFIG_IP_VS_IPV6 is set. Patch from Dan Carpenter.
2) Fix nf_tables port NAT in little endian archs, patch from leroy
christophe.
3) Fix race condition between conntrack confirmation and flush from
userspace. This is the second reincarnation to resolve this problem.
4) Make sure inner messages in the batch come with the nfnetlink header.
5) Relax strict check from nfnetlink_bind() that may break old userspace
applications using all 1s group mask.
6) Schedule removal of chains once no sets and rules refer to them in
the new nf_tables ruleset flush command. Reported by Asbjoern Sloth
Toennesen.
Note that this batch comes later than usual because of the short
winter holidays.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Due to a misplaced parenthesis, the expression
(unlikely(offset) < 0),
which expands to
(__builtin_expect(!!(offset), 0) < 0),
never evaluates to true. Therefore, when sending packets with
PF_PACKET/SOCK_DGRAM, packet_snd() does not abort as intended
if the creation of the layer 2 header fails.
Spotted by Coverity - CID 1259975 ("Operands don't affect result").
Fixes: 9c7077622d ("packet: make packet_snd fail on len smaller than l2 header")
Signed-off-by: Christoph Jaeger <cj@linux.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit d75b1ade56 ("net: less interrupt masking in NAPI") uncovered
wrong alx_poll() behavior.
A NAPI poll() handler is supposed to return exactly the budget when/if
napi_complete() has not been called.
It is also supposed to return number of frames that were received, so
that netdev_budget can have a meaning.
Also, in case of TX pressure, we still have to dequeue received
packets : alx_clean_rx_irq() has to be called even if
alx_clean_tx_irq(alx) returns false, otherwise device is half duplex.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: d75b1ade56 ("net: less interrupt masking in NAPI")
Reported-by: Oded Gabbay <oded.gabbay@amd.com>
Bisected-by: Oded Gabbay <oded.gabbay@amd.com>
Tested-by: Oded Gabbay <oded.gabbay@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A NAPI poll() handler is supposed to return exactly the budget when/if
napi_complete() has not been called.
It is also supposed to return number of frames that were received, so
that netdev_budget can have a meaning.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Request number for ioctls are encoded as 8bit numbers, but unfortunately
UI_GET_SYSNAME and UI_GET_VERSION specifu values larger than that, so they
get truncated to 44 (0x2c) and 45 (0x2d). This change makes requested
values match their effective values (the ABI stays intact).
Signed-off-by: Gabriel Laskar <gabriel@lse.epita.fr>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Pull ARM fixes from Russell King:
"Three small fixes from over the Christmas period, and wiring up the
new execveat syscall for ARM"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8275/1: mm: fix PMD_SECT_RDONLY undeclared compile error
ARM: 8253/1: mm: use phys_addr_t type in map_lowmem() for kernel mem region
ARM: 8249/1: mm: dump: don't skip regions
ARM: wire up execveat syscall
Pull x86 fixes from Ingo Molnar:
"Misc fixes: two vdso fixes, two kbuild fixes and a boot failure fix
with certain odd memory mappings"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, vdso: Use asm volatile in __getcpu
x86/build: Clean auto-generated processor feature files
x86: Fix mkcapflags.sh bash-ism
x86: Fix step size adjustment during initial memory mapping
x86_64, vdso: Fix the vdso address randomization algorithm
Pull scheduler fixes from Ingo Molnar:
"Misc fixes: group scheduling corner case fix, two deadline scheduler
fixes, effective_load() overflow fix, nested sleep fix, 6144 CPUs
system fix"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Fix RCU stall upon -ENOMEM in sched_create_group()
sched/deadline: Avoid double-accounting in case of missed deadlines
sched/deadline: Fix migration of SCHED_DEADLINE tasks
sched: Fix odd values in effective_load() calculations
sched, fanotify: Deal with nested sleeps
sched: Fix KMALLOC_MAX_SIZE overflow during cpumask allocation
Pull perf fixes from Ingo Molnar:
"Mostly tooling fixes, but also some kernel side fixes: uncore PMU
driver fix, user regs sampling fix and an instruction decoder fix that
unbreaks PEBS precise sampling"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/uncore/hsw-ep: Handle systems with only two SBOXes
perf/x86_64: Improve user regs sampling
perf: Move task_pt_regs sampling into arch code
x86: Fix off-by-one in instruction decoder
perf hists browser: Fix segfault when showing callchain
perf callchain: Free callchains when hist entries are deleted
perf hists: Fix children sort key behavior
perf diff: Fix to sort by baseline field by default
perf list: Fix --raw-dump option
perf probe: Fix crash in dwarf_getcfi_elf
perf probe: Fix to fall back to find probe point in symbols
perf callchain: Append callchains only when requested
perf ui/tui: Print backtrace symbols when segfault occurs
perf report: Show progress bar for output resorting
Pull locking fixes from Ingo Molnar:
"A liblockdep fix and a mutex_unlock() mutex-debugging fix"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
mutex: Always clear owner field upon mutex_unlock()
tools/liblockdep: Fix debug_check thinko in mutex destroy
Fix for BUG_ON(anon_vma->degree) splashes in unlink_anon_vmas() ("kernel
BUG at mm/rmap.c:399!") caused by commit 7a3ef208e6 ("mm: prevent
endless growth of anon_vma hierarchy")
Anon_vma_clone() is usually called for a copy of source vma in
destination argument. If source vma has anon_vma it should be already
in dst->anon_vma. NULL in dst->anon_vma is used as a sign that it's
called from anon_vma_fork(). In this case anon_vma_clone() finds
anon_vma for reusing.
Vma_adjust() calls it differently and this breaks anon_vma reusing
logic: anon_vma_clone() links vma to old anon_vma and updates degree
counters but vma_adjust() overrides vma->anon_vma right after that. As
a result final unlink_anon_vmas() decrements degree for wrong anon_vma.
This patch assigns ->anon_vma before calling anon_vma_clone().
Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Reported-and-tested-by: Chris Clayton <chris2553@googlemail.com>
Reported-and-tested-by: Oded Gabbay <oded.gabbay@amd.com>
Reported-and-tested-by: Chih-Wei Huang <cwhuang@android-x86.org>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Daniel Forrest <dan.forrest@ssec.wisc.edu>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: stable@vger.kernel.org # to match back-porting of 7a3ef208e6
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit fee7e49d45 ("mm: propagate error from stack expansion even for
guard page") made sure that we return the error properly for stack
growth conditions. It also theorized that counting the guard page
towards the stack limit might break something, but also said "Let's see
if anybody notices".
Somebody did notice. Apparently android-x86 sets the stack limit very
close to the limit indeed, and including the guard page in the rlimit
check causes the android 'zygote' process problems.
So this adds the (fairly trivial) code to make the stack rlimit check be
against the actual real stack size, rather than the size of the vma that
includes the guard page.
Reported-and-tested-by: Chih-Wei Huang <cwhuang@android-x86.org>
Cc: Jay Foad <jay.foad@gmail.com>
Cc: stable@kernel.org # to match back-porting of fee7e49d45
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Just one fix: a qlogic busy wait regression.
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fix from James Bottomley:
"Just one fix: a qlogic busy wait regression"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
qla2xxx: fix busy wait regression
Use tty kref to release the fake tty in usb_console_setup to avoid use
after free if the underlying serial driver has acquired a reference.
Note that using the tty destructor release_one_tty requires some more
state to be initialised.
Fixes: 4a90f09b20 ("tty: usb-serial krefs")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
The USB console currently allocates a temporary fake tty which is used
to pass terminal settings to the underlying serial driver.
The tty struct is not fully initialised, something which can lead to a
lockdep warning (or worse) if a serial driver tries to acquire a
line-discipline reference:
usbserial: USB Serial support registered for pl2303
pl2303 1-2.1:1.0: pl2303 converter detected
usb 1-2.1: pl2303 converter now attached to ttyUSB0
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 68 Comm: udevd Tainted: G W 3.18.0-rc5 #10
[<c0016f04>] (unwind_backtrace) from [<c0013978>] (show_stack+0x20/0x24)
[<c0013978>] (show_stack) from [<c0449794>] (dump_stack+0x24/0x28)
[<c0449794>] (dump_stack) from [<c006f730>] (__lock_acquire+0x1e50/0x2004)
[<c006f730>] (__lock_acquire) from [<c0070128>] (lock_acquire+0xe4/0x18c)
[<c0070128>] (lock_acquire) from [<c027c6f8>] (ldsem_down_read_trylock+0x78/0x90)
[<c027c6f8>] (ldsem_down_read_trylock) from [<c027a1cc>] (tty_ldisc_ref+0x24/0x58)
[<c027a1cc>] (tty_ldisc_ref) from [<c0340760>] (usb_serial_handle_dcd_change+0x48/0xe8)
[<c0340760>] (usb_serial_handle_dcd_change) from [<bf000484>] (pl2303_read_int_callback+0x210/0x220 [pl2303])
[<bf000484>] (pl2303_read_int_callback [pl2303]) from [<c031624c>] (__usb_hcd_giveback_urb+0x80/0x140)
[<c031624c>] (__usb_hcd_giveback_urb) from [<c0316fc0>] (usb_giveback_urb_bh+0x98/0xd4)
[<c0316fc0>] (usb_giveback_urb_bh) from [<c0042e44>] (tasklet_hi_action+0x9c/0x108)
[<c0042e44>] (tasklet_hi_action) from [<c0042380>] (__do_softirq+0x148/0x42c)
[<c0042380>] (__do_softirq) from [<c00429cc>] (irq_exit+0xd8/0x114)
[<c00429cc>] (irq_exit) from [<c007ae58>] (__handle_domain_irq+0x84/0xdc)
[<c007ae58>] (__handle_domain_irq) from [<c000879c>] (omap_intc_handle_irq+0xd8/0xe0)
[<c000879c>] (omap_intc_handle_irq) from [<c0014544>] (__irq_svc+0x44/0x7c)
Exception stack(0xdf4e7f08 to 0xdf4e7f50)
7f00: debc0b80 df4e7f5c 00000000 00000000 debc0b80 be8da96c
7f20: 00000000 00000128 c000fc84 df4e6000 00000000 df4e7f94 00000004 df4e7f50
7f40: c038ebc0 c038d74c 600f0013 ffffffff
[<c0014544>] (__irq_svc) from [<c038d74c>] (___sys_sendmsg.part.29+0x0/0x2e0)
[<c038d74c>] (___sys_sendmsg.part.29) from [<c038ec08>] (SyS_sendmsg+0x18/0x1c)
[<c038ec08>] (SyS_sendmsg) from [<c000fa00>] (ret_fast_syscall+0x0/0x48)
console [ttyUSB0] enabled
Fixes: 36697529b5 ("tty: Replace ldisc locking with ldisc_sem")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
All a few small regression or stable fixes: a Nvidia HDMI ID addition,
a regression fix for CAIAQ stream count, a typo fix for GPIO setup
with STAC/IDT HD-audio codecs, and a Fireworks big-endian fix.
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Merge tag 'sound-3.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"All a few small regression or stable fixes: a Nvidia HDMI ID addition,
a regression fix for CAIAQ stream count, a typo fix for GPIO setup
with STAC/IDT HD-audio codecs, and a Fireworks big-endian fix"
* tag 'sound-3.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: fireworks: fix an endianness bug for transaction length
ALSA: hda - Add new GPU codec ID 0x10de0072 to snd-hda
ALSA: hda - Fix wrong gpio_dir & gpio_mask hint setups for IDT/STAC codecs
ALSA: snd-usb-caiaq: fix stream count check
Pull HID updates from Jiri Kosina:
- bounds checking fixes in logitech and roccat drivers, from Peter Wu
and Dan Carpenter
- double-kfree fix in i2c-hid driver on bus shutdown, from Mika
Westerberg
- a couple of various small driver fixes
- a few device id additions
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: roccat: potential out of bounds in pyra_sysfs_write_settings()
HID: Add a new id 0x501a for Genius MousePen i608X
HID: logitech-hidpp: prefix the name with "Logitech"
HID: logitech-hidpp: avoid unintended fall-through
HID: Allow HID_BATTERY_STRENGTH to be enabled
HID: i2c-hid: Do not free buffers in i2c_hid_stop()
HID: add battery quirk for USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO keyboard
HID: logitech-hidpp: check WTP report length
HID: logitech-dj: check report length
Pull drm fixes from Dave Airlie:
"I'm briefly working between holidays and LCA, so this is close to a
couple of weeks of fixes,
Two sets of amdkfd fixes, this is a new feature this kernel, and this
pull fixes a few issues since it got merged, ordering when built-in to
kernel and also the iommu vs gpu ordering patch, it also reworks the
ioctl before the initial release.
Otherwise:
- radeon: some misc fixes all over, hdmi, 4k, dpm
- nouveau: mcp77 init fixes, oops fix, bug on fix, msi fix
- i915: power fixes, revert VGACNTR patch
Probably be quiteer next week since I'll be at LCA anyways"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (33 commits)
drm/amdkfd: rewrite kfd_ioctl() according to drm_ioctl()
drm/amdkfd: reformat IOCTL definitions to drm-style
drm/amdkfd: Do copy_to/from_user in general kfd_ioctl()
drm/radeon: integer underflow in radeon_cp_dispatch_texture()
drm/radeon: adjust default bapm settings for KV
drm/radeon: properly filter DP1.2 4k modes on non-DP1.2 hw
drm/radeon: fix sad_count check for dce3
drm/radeon: KV has three PPLLs (v2)
drm/amdkfd: unmap VMID<-->PASID when relesing VMID (non-HWS)
drm/radeon: Init amdkfd only if it was compiled
amdkfd: actually allocate longs for the pasid bitmask
drm/nouveau/nouveau: Do not BUG_ON(!spin_is_locked()) on UP
drm/nv4c/mc: disable msi
drm/nouveau/fb/ram/mcp77: enable NISO poller
drm/nouveau/fb/ram/mcp77: use carveout reg to determine size
drm/nouveau/fb/ram/mcp77: subclass nouveau_ram
drm/nouveau: wake up the card if necessary during gem callbacks
drm/nouveau/device: Add support for GK208B, resolves bug 86935
drm/nouveau: fix missing return statement in nouveau_ttm_tt_unpopulate
drm/nouveau/bios: fix oops on pre-nv50 chipsets
...
- Fix early mapping fixmap corruption by EFI runtime services
- Fix __NR_compat_syscalls off-by-one
- Add missing sanity checks for some 32-bit registers
- Add some missing #includes which we get transitively
- Remove unused prepare_to_copy() macro
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Here is a handful of minor arm64 fixes discovered and fixed over the
Christmas break. The main part is adding some missing #includes that
we seem to be getting transitively but have started causing problems
in -next.
- Fix early mapping fixmap corruption by EFI runtime services
- Fix __NR_compat_syscalls off-by-one
- Add missing sanity checks for some 32-bit registers
- Add some missing #includes which we get transitively
- Remove unused prepare_to_copy() macro"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/efi: add missing call to early_ioremap_reset()
arm64: fix missing asm/io.h include in kernel/smp_spin_table.c
arm64: fix missing asm/alternative.h include in kernel/module.c
arm64: fix missing linux/bug.h include in asm/arch_timer.h
arm64: fix missing asm/pgtable-hwdef.h include in asm/processor.h
arm64: sanity checks: add missing AArch32 registers
arm64: Remove unused prepare_to_copy()
arm64: Correct __NR_compat_syscalls for bpf
Cleanups
kdb: Remove unused command flags, repeat flags and KDB_REPEAT_NONE
Fixes
kgdb/kdb: Allow access on a single core, if a CPU round up is deemed
impossible, which will allow inspection of the now "trashed" kernel
kdb: Add enable mask for the command groups
kdb: access controls to restrict sensitive commands
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Merge tag 'for_linus-3.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb
Pull kgdb/kdb fixes from Jason Wessel:
"These have been around since 3.17 and in kgdb-next for the last 9
weeks and some will go back to -stable.
Summary of changes:
Cleanups
- kdb: Remove unused command flags, repeat flags and KDB_REPEAT_NONE
Fixes
- kgdb/kdb: Allow access on a single core, if a CPU round up is
deemed impossible, which will allow inspection of the now "trashed"
kernel
- kdb: Add enable mask for the command groups
- kdb: access controls to restrict sensitive commands"
* tag 'for_linus-3.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb:
kernel/debug/debug_core.c: Logging clean-up
kgdb: timeout if secondary CPUs ignore the roundup
kdb: Allow access to sensitive commands to be restricted by default
kdb: Add enable mask for groups of commands
kdb: Categorize kdb commands (similar to SysRq categorization)
kdb: Remove KDB_REPEAT_NONE flag
kdb: Use KDB_REPEAT_* values as flags
kdb: Rename kdb_register_repeat() to kdb_register_flags()
kdb: Rename kdb_repeat_t to kdb_cmdflags_t, cmd_repeat to cmd_flags
kdb: Remove currently unused kdbtab_t->cmd_flags
Pull two nfsd bugfixes from Bruce Fields.
* 'for-3.19' of git://linux-nfs.org/~bfields/linux:
rpc: fix xdr_truncate_encode to handle buffer ending on page boundary
nfsd: fix fi_delegees leak when fi_had_conflict returns true
Pull two Ceph fixes from Sage Weil:
"These are both pretty trivial: a sparse warning fix and size_t printk
thing"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
libceph: fix sparse endianness warnings
ceph: use %zu for len in ceph_fill_inline_data()
Pull btrfs fixes from Chris Mason:
"None of these are huge, but my commit does fix a regression from 3.18
that could cause lost files during log replay.
This also adds Dave Sterba to the list of Btrfs maintainers. It
doesn't mean we're doing things differently, but Dave has really been
helping with the maintainer workload for years"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: don't delay inode ref updates during log replay
Btrfs: correctly get tree level in tree_backref_for_extent
Btrfs: call inode_dec_link_count() on mkdir error path
Btrfs: abort transaction if we don't find the block group
Btrfs, scrub: uninitialized variable in scrub_extent_for_parity()
Btrfs: add more maintainers
When unloading the module 'g_hid.ko', the urb request will be dequeued and the
completion routine will be excuted. If there is no urb packet, the urb request
will not be added to the endpoint queue and the completion routine pointer in
urb request is NULL.
Accessing to this NULL function pointer will cause the Oops issue reported
below.
Add the code to check if the urb request is in the endpoint queue
or not. If the urb request is not in the endpoint queue, a negative
error code will be returned.
Here is the Oops log:
Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = dedf0000
[00000000] *pgd=3ede5831, *pte=00000000, *ppte=00000000
Internal error: Oops: 80000007 [#1] ARM
Modules linked in: g_hid(-) usb_f_hid libcomposite
CPU: 0 PID: 923 Comm: rmmod Not tainted 3.18.0+ #2
Hardware name: Atmel SAMA5 (Device Tree)
task: df6b1100 ti: dedf6000 task.ti: dedf6000
PC is at 0x0
LR is at usb_gadget_giveback_request+0xc/0x10
pc : [<00000000>] lr : [<c02ace88>] psr: 60000093
sp : dedf7eb0 ip : df572634 fp : 00000000
r10: 00000000 r9 : df52e210 r8 : 60000013
r7 : df6a9858 r6 : df52e210 r5 : df6a9858 r4 : df572600
r3 : 00000000 r2 : ffffff98 r1 : df572600 r0 : df6a9868
Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c53c7d Table: 3edf0059 DAC: 00000015
Process rmmod (pid: 923, stack limit = 0xdedf6230)
Stack: (0xdedf7eb0 to 0xdedf8000)
7ea0: 00000000 c02adbbc df572580 deced608
7ec0: df572600 df6a9868 df572634 c02aed3c df577c00 c01b8608 00000000 df6be27c
7ee0: 00200200 00100100 bf0162f4 c000e544 dedf6000 00000000 00000000 bf010c00
7f00: bf0162cc bf00159c 00000000 df572980 df52e218 00000001 df5729b8 bf0031d0
[..]
[<c02ace88>] (usb_gadget_giveback_request) from [<c02adbbc>] (request_complete+0x64/0x88)
[<c02adbbc>] (request_complete) from [<c02aed3c>] (usba_ep_dequeue+0x70/0x128)
[<c02aed3c>] (usba_ep_dequeue) from [<bf010c00>] (hidg_unbind+0x50/0x7c [usb_f_hid])
[<bf010c00>] (hidg_unbind [usb_f_hid]) from [<bf00159c>] (remove_config.isra.6+0x98/0x9c [libcomposite])
[<bf00159c>] (remove_config.isra.6 [libcomposite]) from [<bf0031d0>] (__composite_unbind+0x34/0x98 [libcomposite])
[<bf0031d0>] (__composite_unbind [libcomposite]) from [<c02acee0>] (usb_gadget_remove_driver+0x50/0x78)
[<c02acee0>] (usb_gadget_remove_driver) from [<c02ad570>] (usb_gadget_unregister_driver+0x64/0x94)
[<c02ad570>] (usb_gadget_unregister_driver) from [<bf0160c0>] (hidg_cleanup+0x10/0x34 [g_hid])
[<bf0160c0>] (hidg_cleanup [g_hid]) from [<c0056748>] (SyS_delete_module+0x118/0x19c)
[<c0056748>] (SyS_delete_module) from [<c000e3c0>] (ret_fast_syscall+0x0/0x30)
Code: bad PC value
Signed-off-by: Songjun Wu <songjun.wu@atmel.com>
[nicolas.ferre@atmel.com: reworked the commit message]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Fixes: 914a3f3b37 ("USB: add atmel_usba_udc driver")
Cc: <stable@vger.kernel.org> # 2.6.x-ish
Signed-off-by: Felipe Balbi <balbi@ti.com>
We try to free an ERR_PTR on this error path.
Fixes: b44be2462d ('usb: gadget: gadgetfs: Free memory allocated by memdup_user()')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Returning a difference from a comparison functions is usually wrong
(see acbbe6fbb2 "kcmp: fix standard comparison bug" for the long
story). Here there is the additional twist that if the void pointers
ns and kn->ns happen to differ by a multiple of 2^32,
kernfs_name_compare returns 0, falsely reporting a match to the
caller.
Technically 'hash - kn->hash' is ok since the hashes are restricted to
31 bits, but it's better to avoid that subtlety.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently it is not possible to have a kernel with built-in MCB attached
devices. This results out of the fact that mcb-pci requests PCI BAR 0, then
parses the chameleon table and calls the driver's probe function before
releasing BAR 0 again. When building the kernel with modules this is not a
problem (and therefore it wasn't detected by my tests yet).
A solution is to only remap the 1st 0x200 bytes of a Chameleon PCI device.
0x200 bytes is the maximum size of a Chameleon v2 Table.
Also this patch stops disabling the PCI device on successful registration of MCB
devices.
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@men.de>
Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Everything else starts with ICF so the last two should as well.
Fix places they are used to match.
Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
For PGR reservation of type Write Exclusive Access, allow all non
reservation holding I_T nexuses with active registrations to READ
from the device.
This addresses a bug where active registrations that attempted
to READ would result in an reservation conflict.
Signed-off-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Now that fabric_max_sectors is no longer used to enforce the maximum
I/O size, go ahead and drop it's left-over usage in target-core and
associated backend drivers.
Cc: Christoph Hellwig <hch@lst.de>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This patch drops the arbitrary maximum I/O size limit in sbc_parse_cdb(),
which currently for fabric_max_sectors is hardcoded to 8192 (4 MB for 512
byte sector devices), and for hw_max_sectors is a backend driver dependent
value.
This limit is problematic because Linux initiators have only recently
started to honor block limits MAXIMUM TRANSFER LENGTH, and other non-Linux
based initiators (eg: MSFT Fibre Channel) can also generate I/Os larger
than 4 MB in size.
Currently when this happens, the following message will appear on the
target resulting in I/Os being returned with non recoverable status:
SCSI OP 28h with too big sectors 16384 exceeds fabric_max_sectors: 8192
Instead, drop both [fabric,hw]_max_sector checks in sbc_parse_cdb(),
and convert the existing hw_max_sectors into a purely informational
attribute used to represent the granuality that backend driver and/or
subsystem code is splitting I/Os upon.
Also, update FILEIO with an explicit FD_MAX_BYTES check in fd_execute_rw()
to deal with the one special iovec limitiation case.
v2 changes:
- Drop hw_max_sectors check in sbc_parse_cdb()
Reported-by: Lance Gropper <lance.gropper@qosserver.com>
Reported-by: Stefan Priebe <s.priebe@profihost.ag>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Roland Dreier <roland@purestorage.com>
Cc: stable@vger.kernel.org # 3.4
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Merge misc fixes from Andrew Morton:
"12 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm, vmscan: prevent kswapd livelock due to pfmemalloc-throttled process being killed
memcg: fix destination cgroup leak on task charges migration
mm: memcontrol: switch soft limit default back to infinity
mm/debug_pagealloc: remove obsolete Kconfig options
vfs: renumber FMODE_NONOTIFY and add to uniqueness check
arch/blackfin/mach-bf533/boards/stamp.c: add linux/delay.h
ocfs2: fix the wrong directory passed to ocfs2_lookup_ino_from_name() when link file
MAINTAINERS: update rydberg's addresses
mm: protect set_page_dirty() from ongoing truncation
mm: prevent endless growth of anon_vma hierarchy
exit: fix race between wait_consider_task() and wait_task_zombie()
ocfs2: remove bogus check in dlm_process_recovery_data
H_RST bit in H_CSR register may be found lit before reset is started,
for example if preceding reset flow hasn't completed.
In that case asserting H_RST will be ignored, therefore we need to clean
H_RST bit to start a successful reset sequence.
Cc: <stable@vger.kernel.org> #3.10+
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
According to the Serial ATA AHCI specification, Device Sleep is an
optional feature and as such no errors should be printed if it's
missing. Keep informing users, but use dev_info() instead of dev_err().
Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This reverts commit c4dc304677.
This fix is superseded by commit 52bce7f8d4,
'pty, n_tty: Simplify input processing on final close'.
The final close now waits for input processing to complete before
destroying the pty, so poll() does not need to special case this
condition.
Cc: Francesco Ruggeri <fruggeri@arista.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Exclusive mode ttys (TTY_EXCLUSIVE) do not allow further reopens;
fail the condition before associating the file pointer and calling
the driver open() method.
Prevents DTR programming when the tty is already in exclusive mode.
Reported-by: Shreyas Bethur <shreyas.bethur@ni.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Acked-by: Shreyas Bethur <shreyas.bethur@ni.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
WCH384 4S board is a PCI-E card with 4 DB9 COM ports detected as
Serial controller: Device 1c00:3470 (rev 10) (prog-if 05 [16850])
Signed-off-by: Sergej Pupykin <ml@sergej.pp.ru>
Acked-by: Zany Yan <sirlight@cox.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In v3.19-rc3 tree when CONFIG_ARM_LPAE and CONFIG_DEBUG_RODATA are enabled
image failed to compile with the following error:
arch/arm/mm/init.c:661:14: error: ‘PMD_SECT_RDONLY’ undeclared here (not in a function)
It seems that '80d6b0c ARM: mm: allow text and rodata sections to be read-only'
and 'ded9477 ARM: 8109/1: mm: Modify pte_write and pmd_write logic for LPAE'
commits crossed. 80d6b0c uses PMD_SECT_RDONLY macro but ded9477 renames it
and uses software bits L_PMD_SECT_RDONLY instead.
Fix is to use L_PMD_SECT_RDONLY instead PMD_SECT_RDONLY as ded9477 does in
another places.
Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Commit 1290a958d4 ("usb: phy: propagate __of_usb_find_phy()'s error on
failure") actually broke the deferred probing mechanism, since it now returns
EPROBE_DEFER only when the try_module_get call fails, but not when the phy
lookup does.
All the other similar functions seem to return ENODEV when try_module_get
fails, and the error code of either __usb_find_phy or __of_usb_find_phy
otherwise.
In order to have a consistent behaviour, and a meaningful EPROBE_DEFER, always
return EPROBE_DEFER when __(of_)usb_find_phy fails to look up the requested
phy, that will be propagated by the caller, and ENODEV if try_module_get fails.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Tested-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
