Commit dfe2a77fd2 ("kfifo: fix kfifo_alloc() and kfifo_init()") made
the kfifo code round the number of elements up. That was good for
__kfifo_alloc(), but it's actually wrong for __kfifo_init().
The difference? __kfifo_alloc() will allocate the rounded-up number of
elements, but __kfifo_init() uses an allocation done by the caller. We
can't just say "use more elements than the caller allocated", and have
to round down.
The good news? All the normal cases will be using power-of-two arrays
anyway, and most users of kfifo's don't use kfifo_init() at all, but one
of the helper macros to declare a KFIFO that enforce the proper
power-of-two behavior. But it looks like at least ibmvscsis might be
affected.
The bad news? Will Deacon refers to an old thread and points points out
that the memory ordering in kfifo's is questionable. See
https://lore.kernel.org/lkml/20181211034032.32338-1-yuleixzhang@tencent.com/
for more.
Fixes: dfe2a77fd2 ("kfifo: fix kfifo_alloc() and kfifo_init()")
Reported-by: laokz <laokz@foxmail.com>
Cc: Stefani Seibold <stefani@seibold.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Greg KH <greg@kroah.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Instead of using raw_cpu_read() use per_cpu() to read the actual data of
the corresponding cpu otherwise we will be reading the data of the
current cpu for the number of online CPUs.
Link: http://lkml.kernel.org/r/20190829203110.129263-1-shakeelb@google.com
Fixes: bb65f89b7d ("mm: memcontrol: flush percpu vmevents before releasing memcg")
Fixes: c350a99ea2 ("mm: memcontrol: flush percpu vmstats before releasing memcg")
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Adric Blake has noticed[1] the following warning:
WARNING: CPU: 7 PID: 175 at mm/vmscan.c:245 set_task_reclaim_state+0x1e/0x40
[...]
Call Trace:
mem_cgroup_shrink_node+0x9b/0x1d0
mem_cgroup_soft_limit_reclaim+0x10c/0x3a0
balance_pgdat+0x276/0x540
kswapd+0x200/0x3f0
? wait_woken+0x80/0x80
kthread+0xfd/0x130
? balance_pgdat+0x540/0x540
? kthread_park+0x80/0x80
ret_from_fork+0x35/0x40
---[ end trace 727343df67b2398a ]---
which tells us that soft limit reclaim is about to overwrite the
reclaim_state configured up in the call chain (kswapd in this case but
the direct reclaim is equally possible). This means that reclaim stats
would get misleading once the soft reclaim returns and another reclaim
is done.
Fix the warning by dropping set_task_reclaim_state from the soft reclaim
which is always called with reclaim_state set up.
[1] http://lkml.kernel.org/r/CAE1jjeePxYPvw1mw2B3v803xHVR_BNnz0hQUY_JDMN8ny29M6w@mail.gmail.com
Link: http://lkml.kernel.org/r/20190828071808.20410-1-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Adric Blake <promarbler14@gmail.com>
Acked-by: Yafang Shao <laoar.shao@gmail.com>
Acked-by: Yang Shi <yang.shi@linux.alibaba.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hillf Danton <hdanton@sina.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
I don't work for Virtuozzo or Samsung anymore and I've noticed that they
have started sending annoying html email-replies.
And I prioritize my personal emails over work email box, so while at it
add an entry for Arista too - so I can reply faster when needed.
Link: http://lkml.kernel.org/r/20190827220346.11123-1-dima@arista.com
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 766a4c19d8 ("mm/memcontrol.c: keep local VM counters in sync
with the hierarchical ones") effectively decreased the precision of
per-memcg vmstats_local and per-memcg-per-node lruvec percpu counters.
That's good for displaying in memory.stat, but brings a serious
regression into the reclaim process.
One issue I've discovered and debugged is the following:
lruvec_lru_size() can return 0 instead of the actual number of pages in
the lru list, preventing the kernel to reclaim last remaining pages.
Result is yet another dying memory cgroups flooding. The opposite is
also happening: scanning an empty lru list is the waste of cpu time.
Also, inactive_list_is_low() can return incorrect values, preventing the
active lru from being scanned and freed. It can fail both because the
size of active and inactive lists are inaccurate, and because the number
of workingset refaults isn't precise. In other words, the result is
pretty random.
I'm not sure, if using the approximate number of slab pages in
count_shadow_number() is acceptable, but issues described above are
enough to partially revert the patch.
Let's keep per-memcg vmstat_local batched (they are only used for
displaying stats to the userspace), but keep lruvec stats precise. This
change fixes the dead memcg flooding on my setup.
Link: http://lkml.kernel.org/r/20190817004726.2530670-1-guro@fb.com
Fixes: 766a4c19d8 ("mm/memcontrol.c: keep local VM counters in sync with the hierarchical ones")
Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Yafang Shao <laoar.shao@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
I've noticed that the "slab" value in memory.stat is sometimes 0, even
if some children memory cgroups have a non-zero "slab" value. The
following investigation showed that this is the result of the kmem_cache
reparenting in combination with the per-cpu batching of slab vmstats.
At the offlining some vmstat value may leave in the percpu cache, not
being propagated upwards by the cgroup hierarchy. It means that stats
on ancestor levels are lower than actual. Later when slab pages are
released, the precise number of pages is substracted on the parent
level, making the value negative. We don't show negative values, 0 is
printed instead.
To fix this issue, let's flush percpu slab memcg and lruvec stats on
memcg offlining. This guarantees that numbers on all ancestor levels
are accurate and match the actual number of outstanding slab pages.
Link: http://lkml.kernel.org/r/20190819202338.363363-3-guro@fb.com
Fixes: fb2f2b0adb ("mm: memcg/slab: reparent memcg kmem_caches on cgroup removal")
Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for net:
1) Spurious warning when loading rules using the physdev match,
from Todd Seidelmann.
2) Fix FTP conntrack helper debugging output, from Thomas Jarosch.
3) Restore per-netns nf_conntrack_{acct,helper,timeout} sysctl knobs,
from Florian Westphal.
4) Clear skbuff timestamp from the flowtable datapath, also from Florian.
5) Fix incorrect byteorder of NFT_META_BRI_IIFVPROTO, from wenxu.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann says:
====================
pull-request: bpf 2019-08-31
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) Fix 32-bit zero-extension during constant blinding which
has been causing a regression on ppc64, from Naveen.
2) Fix a latency bug in nfp driver when updating stack index
register, from Jiong.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
When a local endpoint is ceases to be in use, such as when the kafs module
is unloaded, the kernel will emit an assertion failure if there are any
outstanding client connections:
rxrpc: Assertion failed
------------[ cut here ]------------
kernel BUG at net/rxrpc/local_object.c:433!
and even beyond that, will evince other oopses if there are service
connections still present.
Fix this by:
(1) Removing the triggering of connection reaping when an rxrpc socket is
released. These don't actually clean up the connections anyway - and
further, the local endpoint may still be in use through another
socket.
(2) Mark the local endpoint as dead when we start the process of tearing
it down.
(3) When destroying a local endpoint, strip all of its client connections
from the idle list and discard the ref on each that the list was
holding.
(4) When destroying a local endpoint, call the service connection reaper
directly (rather than through a workqueue) to immediately kill off all
outstanding service connections.
(5) Make the service connection reaper reap connections for which the
local endpoint is marked dead.
Only after destroying the connections can we close the socket lest we get
an oops in a workqueue that's looking at a connection or a peer.
Fixes: 3d18cbb7fd ("rxrpc: Fix conn expiry timers")
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'rxrpc-fixes-20190827' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
rxrpc: Fix use of skb_cow_data()
Here's a series of patches that replaces the use of skb_cow_data() in rxrpc
with skb_unshare() early on in the input process. The problem that is
being seen is that skb_cow_data() indirectly requires that the maximum
usage count on an sk_buff be 1, and it may generate an assertion failure in
pskb_expand_head() if not.
This can occur because rxrpc_input_data() may be still holding a ref when
it has just attached the sk_buff to the rx ring and given that attachment
its own ref. If recvmsg happens fast enough, skb_cow_data() can see the
ref still held by the softirq handler.
Further, a packet may contain multiple subpackets, each of which gets its
own attachment to the ring and its own ref - also making skb_cow_data() go
bang.
Fix this by:
(1) The DATA packet is currently parsed for subpackets twice by the input
routines. Parse it just once instead and make notes in the sk_buff
private data.
(2) Use the notes from (1) when attaching the packet to the ring multiple
times. Once the packet is attached to the ring, recvmsg can see it
and start modifying it, so the softirq handler is not permitted to
look inside it from that point.
(3) Pass the ref from the input code to the ring rather than getting an
extra ref. rxrpc_input_data() uses a ref on the second refcount to
prevent the packet from evaporating under it.
(4) Call skb_unshare() on secured DATA packets in rxrpc_input_packet()
before we take call->input_lock. Other sorts of packets don't get
modified and so can be left.
A trace is emitted if skb_unshare() eats the skb. Note that
skb_share() for our accounting in this regard as we can't see the
parameters in the packet to log in a trace line if it releases it.
(5) Remove the calls to skb_cow_data(). These are then no longer
necessary.
There are also patches to improve the rxrpc_skb tracepoint to make sure
that Tx-derived buffers are identified separately from Rx-derived buffers
in the trace.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The devicetree binding lists the phy phy as optional. As such, the
driver should not bail out if it can't find a regulator. Instead it
should just skip the remaining regulator related code and continue
on normally.
Skip the remainder of phy_power_on() if a regulator supply isn't
available. This also gets rid of the bogus return code.
Fixes: 2e12f53663 ("net: stmmac: dwmac-rk: Use standard devicetree property for phy regulator")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
In xgbe_mod_init(), we should do cleanup if some error occurs
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: efbaa82833 ("amd-xgbe: Add support to handle device renaming")
Fixes: 47f164deab ("amd-xgbe: Add PCI device support")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In register_ftrace_function_probe(), we are not checking the return
value of alloc_and_copy_ftrace_hash(). The subsequent call to
ftrace_match_records() may end up dereferencing the same. Add a check to
ensure this doesn't happen.
Link: http://lkml.kernel.org/r/26e92574f25ad23e7cafa3cf5f7a819de1832cbe.1562249521.git.naveen.n.rao@linux.vnet.ibm.com
Cc: stable@vger.kernel.org
Fixes: 1ec3a81a0c ("ftrace: Have each function probe use its own ftrace_ops")
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
The race between adding a function probe and reading the probes that exist
is very subtle. It needs a comment. Also, the issue can also happen if the
probe has has the EMPTY_HASH as its func_hash.
Cc: stable@vger.kernel.org
Fixes: 7b60f3d876 ("ftrace: Dynamically create the probe ftrace_ops for the trace_array")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
LTP testsuite on powerpc results in the below crash:
Unable to handle kernel paging request for data at address 0x00000000
Faulting instruction address: 0xc00000000029d800
Oops: Kernel access of bad area, sig: 11 [#1]
LE SMP NR_CPUS=2048 NUMA PowerNV
...
CPU: 68 PID: 96584 Comm: cat Kdump: loaded Tainted: G W
NIP: c00000000029d800 LR: c00000000029dac4 CTR: c0000000001e6ad0
REGS: c0002017fae8ba10 TRAP: 0300 Tainted: G W
MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE> CR: 28022422 XER: 20040000
CFAR: c00000000029d90c DAR: 0000000000000000 DSISR: 40000000 IRQMASK: 0
...
NIP [c00000000029d800] t_probe_next+0x60/0x180
LR [c00000000029dac4] t_mod_start+0x1a4/0x1f0
Call Trace:
[c0002017fae8bc90] [c000000000cdbc40] _cond_resched+0x10/0xb0 (unreliable)
[c0002017fae8bce0] [c0000000002a15b0] t_start+0xf0/0x1c0
[c0002017fae8bd30] [c0000000004ec2b4] seq_read+0x184/0x640
[c0002017fae8bdd0] [c0000000004a57bc] sys_read+0x10c/0x300
[c0002017fae8be30] [c00000000000b388] system_call+0x5c/0x70
The test (ftrace_set_ftrace_filter.sh) is part of ftrace stress tests
and the crash happens when the test does 'cat
$TRACING_PATH/set_ftrace_filter'.
The address points to the second line below, in t_probe_next(), where
filter_hash is dereferenced:
hash = iter->probe->ops.func_hash->filter_hash;
size = 1 << hash->size_bits;
This happens due to a race with register_ftrace_function_probe(). A new
ftrace_func_probe is created and added into the func_probes list in
trace_array under ftrace_lock. However, before initializing the filter,
we drop ftrace_lock, and re-acquire it after acquiring regex_lock. If
another process is trying to read set_ftrace_filter, it will be able to
acquire ftrace_lock during this window and it will end up seeing a NULL
filter_hash.
Fix this by just checking for a NULL filter_hash in t_probe_next(). If
the filter_hash is NULL, then this probe is just being added and we can
simply return from here.
Link: http://lkml.kernel.org/r/05e021f757625cbbb006fad41380323dbe4e3b43.1562249521.git.naveen.n.rao@linux.vnet.ibm.com
Cc: stable@vger.kernel.org
Fixes: 7b60f3d876 ("ftrace: Dynamically create the probe ftrace_ops for the trace_array")
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
- A fix for update_sections_early() to cope with NULL ->mm pointers.
- A correction to the backtrace code to allow proper backtraces.
- Reinforcement of pfn_valid() with PFNs >= 4GiB.
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"Three fixes for ARM this time around:
- A fix for update_sections_early() to cope with NULL ->mm pointers.
- A correction to the backtrace code to allow proper backtraces.
- Reinforcement of pfn_valid() with PFNs >= 4GiB"
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8901/1: add a criteria for pfn_valid of arm
ARM: 8897/1: check stmfd instruction using right shift
ARM: 8874/1: mm: only adjust sections of valid mm structures
If check_cached_key() returns a non-NULL value, we still need to call
key_type::match_free() to undo key_type::match_preparse().
Fixes: 7743c48e54 ("keys: Cache result of request_key*() temporarily in task_struct")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The majority of the fixes this time are for OMAP hardware,
here is a breakdown of the significant changes:
Various device tree bug fixes:
- TI am57xx boards need a voltage level fix to avoid damaging SD cards
- vf610-bk4 fails to detect its flash due to an incorrect description
- meson-g12a USB phy configuration fails
- meson-g12b reboot should not power off the SD card
- Some corrections for apparently harmless differences from the
documentation.
Regression fixes:
- ams-delta FIQ interrupts broke in 5.3
- TI am3/am4 mmc controllers broke in 5.2
The logic_pio driver (used on some Huawei ARM servers) needs a few
bug fixes for reliability.
A couple of compile-time warning fixes
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"The majority of the fixes this time are for OMAP hardware, here is a
breakdown of the significant changes:
Various device tree bug fixes:
- TI am57xx boards need a voltage level fix to avoid damaging SD
cards
- vf610-bk4 fails to detect its flash due to an incorrect description
- meson-g12a USB phy configuration fails
- meson-g12b reboot should not power off the SD card
- Some corrections for apparently harmless differences from the
documentation.
Regression fixes:
- ams-delta FIQ interrupts broke in 5.3
- TI am3/am4 mmc controllers broke in 5.2
The logic_pio driver (used on some Huawei ARM servers) got a few bug
fixes for reliability.
And a couple of compile-time warning fixes"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (26 commits)
soc: ixp4xx: Protect IXP4xx SoC drivers by ARCH_IXP4XX || COMPILE_TEST
soc: ti: pm33xx: Make two symbols static
soc: ti: pm33xx: Fix static checker warnings
ARM: OMAP: dma: Mark expected switch fall-throughs
ARM: dts: Fix incomplete dts data for am3 and am4 mmc
bus: ti-sysc: Simplify cleanup upon failures in sysc_probe()
ARM: OMAP1: ams-delta-fiq: Fix missing irq_ack
ARM: dts: dra74x: Fix iodelay configuration for mmc3
ARM: dts: am335x: Fix UARTs length
ARM: OMAP2+: Fix omap4 errata warning on other SoCs
bus: hisi_lpc: Add .remove method to avoid driver unbind crash
bus: hisi_lpc: Unregister logical PIO range to avoid potential use-after-free
lib: logic_pio: Add logic_pio_unregister_range()
lib: logic_pio: Avoid possible overlap for unregistering regions
lib: logic_pio: Fix RCU usage
arm64: dts: amlogic: odroid-n2: keep SD card regulator always on
arm64: dts: meson-g12a-sei510: enable IR controller
arm64: dts: meson-g12a: add missing dwc2 phy-names
ARM: dts: vf610-bk4: Fix qspi node description
ARM: dts: Fix incorrect dcan register mapping for am3, am4 and dra7
...
- Fix locking on list traversal (siw)
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fix from Doug Ledford:
"Much calmer week this week. Just one patch queued up:
The way the siw driver was locking around the traversal of the list of
ipv6 addresses on a device was causing a scheduling while atomic
issue. Bernard straightened it out by using the rtnl_lock"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/siw: Fix IPv6 addr_list locking
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Merge tag 'ceph-for-5.3-rc7' of git://github.com/ceph/ceph-client
Pull two ceph fixes from Ilya Dryomov:
"A fix for a -rc1 regression in rbd and a trivial static checker fix"
* tag 'ceph-for-5.3-rc7' of git://github.com/ceph/ceph-client:
rbd: restore zeroing past the overlap when reading from parent
libceph: don't call crypto_free_sync_skcipher() on a NULL tfm
amdgpu:
- Fix GFXOFF regression for PCO and RV2
- Fix missing fence reference
- Fix VG20 power readings on certain SMU firmware versions
- Fix dpm level setup for VG20
- Add an ATPX laptop quirk
i915:
- Fix DP MST max BPC property creation after DRM register
- Fix unused ggtt deballooning and NULL dereference in guest
- Fix DSC eDP transcoder identification
- Fix WARN from DMA API debug by setting DMA max segment size
qxl:
- Make qxl reservel the vga ports using vgaargb to prevent switching to vga compatibility mode.
omap:
- Fix omap port lookup for SDI output
virtio:
- Use virtio_max_dma_size to fix an issue with swiotlb.
komeda:
- Compiler fixes to komeda.
- Add missing of_node_get() call in komeda.
- Reorder the komeda de-init functions.
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Merge tag 'drm-fixes-2019-08-30' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Nothing too crazy, there's probably more patches than I'd like at this
stage, but they are all pretty self contained:
amdgpu:
- Fix GFXOFF regression for PCO and RV2
- Fix missing fence reference
- Fix VG20 power readings on certain SMU firmware versions
- Fix dpm level setup for VG20
- Add an ATPX laptop quirk
i915:
- Fix DP MST max BPC property creation after DRM register
- Fix unused ggtt deballooning and NULL dereference in guest
- Fix DSC eDP transcoder identification
- Fix WARN from DMA API debug by setting DMA max segment size
qxl:
- Make qxl reservel the vga ports using vgaargb to prevent switching to vga compatibility mode.
omap:
- Fix omap port lookup for SDI output
virtio:
- Use virtio_max_dma_size to fix an issue with swiotlb.
komeda:
- Compiler fixes to komeda.
- Add missing of_node_get() call in komeda.
- Reorder the komeda de-init functions"
* tag 'drm-fixes-2019-08-30' of git://anongit.freedesktop.org/drm/drm:
drm/komeda: Reordered the komeda's de-init functions
drm/amdgpu: fix GFXOFF on Picasso and Raven2
drm/amdgpu: Add APTX quirk for Dell Latitude 5495
drm/amd/powerplay: correct Vega20 dpm level related settings
drm/i915: Call dma_set_max_seg_size() in i915_driver_hw_probe()
drm/i915/dp: Fix DSC enable code to use cpu_transcoder instead of encoder->type
drm/i915: Don't deballoon unused ggtt drm_mm_node in linux guest
drm/i915: Do not create a new max_bpc prop for MST connectors
drm/powerplay: Fix Vega20 power reading again
drm/powerplay: Fix Vega20 Average Power value v4
drm/amdgpu: fix dma_fence_wait without reference
drm/komeda: Add missing of_node_get() call
drm/komeda: Clean warning 'komeda_component_add' might be a candidate for 'gnu_printf'
drm/komeda: Fix warning -Wunused-but-set-variable
drm/komeda: Fix error: not allocating enough data 1592 vs 1584
drm/virtio: use virtio_max_dma_size
drm/omap: Fix port lookup for SDI output
drm/qxl: get vga ioports
This reverts commit 557529494d.
Commit 557529494d ("iommu/vt-d: Avoid duplicated pci dma alias
consideration") aimed to address a NULL pointer deference issue
happened when a thunderbolt device driver returned unexpectedly.
Unfortunately, this change breaks a previous pci quirk added by
commit cc346a4714 ("PCI: Add function 1 DMA alias quirk for
Marvell devices"), as the result, devices like Marvell 88SE9128
SATA controller doesn't work anymore.
We will continue to try to find the real culprit mentioned in
557529494d, but for now we should revert it to fix current
breakage.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=204627
Cc: Stijn Tintel <stijn@linux-ipv6.be>
Cc: Petr Vandrovec <petr@vandrovec.name>
Reported-by: Stijn Tintel <stijn@linux-ipv6.be>
Reported-by: Petr Vandrovec <petr@vandrovec.name>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
- two patches fixing a regression in the pca953x driver
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Merge tag 'gpio-v5.3-rc7-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into fixes
gpio fixes for v5.3-rc7
- two patches fixing a regression in the pca953x driver
Quoting from mt8183 datasheet, the number of transfers to be
transferred in one transaction should be set to bigger than 1,
so we should forbid zero-length transfer and update functionality.
Reported-by: Alexandru M Stan <amstan@chromium.org>
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Reviewed-by: Qii Wang <qii.wang@mediatek.com>
[wsa: shortened commit message a little]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
The driver does not support the SMBUS Quick command so remove the
flag that indicates that level of support.
By default the i2c_detect tool uses the quick command to try and
detect devices at some bus addresses. If the quick command is used
then we will not detect the device, even though it is present.
Fixes: e6e5dd3566 (i2c: iproc: Add Broadcom iProc I2C Driver)
Signed-off-by: Lori Hikichi <lori.hikichi@broadcom.com>
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
When counting dispatched micro-ops with cnt_ctl=1, in order to prevent
sample bias, IBS hardware preloads the least significant 7 bits of
current count (IbsOpCurCnt) with random values, such that, after the
interrupt is handled and counting resumes, the next sample taken
will be slightly perturbed.
The current count bitfield is in the IBS execution control h/w register,
alongside the maximum count field.
Currently, the IBS driver writes that register with the maximum count,
leaving zeroes to fill the current count field, thereby overwriting
the random bits the hardware preloaded for itself.
Fix the driver to actually retain and carry those random bits from the
read of the IBS control register, through to its write, instead of
overwriting the lower current count bits with zeroes.
Tested with:
perf record -c 100001 -e ibs_op/cnt_ctl=1/pp -a -C 0 taskset -c 0 <workload>
'perf annotate' output before:
15.70 65: addsd %xmm0,%xmm1
17.30 add $0x1,%rax
15.88 cmp %rdx,%rax
je 82
17.32 72: test $0x1,%al
jne 7c
7.52 movapd %xmm1,%xmm0
5.90 jmp 65
8.23 7c: sqrtsd %xmm1,%xmm0
12.15 jmp 65
'perf annotate' output after:
16.63 65: addsd %xmm0,%xmm1
16.82 add $0x1,%rax
16.81 cmp %rdx,%rax
je 82
16.69 72: test $0x1,%al
jne 7c
8.30 movapd %xmm1,%xmm0
8.13 jmp 65
8.24 7c: sqrtsd %xmm1,%xmm0
8.39 jmp 65
Tested on Family 15h and 17h machines.
Machines prior to family 10h Rev. C don't have the RDWROPCNT capability,
and have the IbsOpCurCnt bitfield reserved, so this patch shouldn't
affect their operation.
It is unknown why commit db98c5faf8 ("perf/x86: Implement 64-bit
counter support for IBS") ignored the lower 4 bits of the IbsOpCurCnt
field; the number of preloaded random bits has always been 7, AFAICT.
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: "Arnaldo Carvalho de Melo" <acme@kernel.org>
Cc: <x86@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "Borislav Petkov" <bp@alien8.de>
Cc: Stephane Eranian <eranian@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: "Namhyung Kim" <namhyung@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Link: https://lkml.kernel.org/r/20190826195730.30614-1-kim.phillips@amd.com
The recent change to shuffle the codec initialization procedure for
Realtek via commit 607ca3bd22 ("ALSA: hda/realtek - EAPD turn on
later") caused the silent output on some machines. This change was
supposed to be safe, but it isn't actually; some devices have quirk
setups to override the EAPD via COEF or BTL in the additional verb
table, which is applied at the beginning of snd_hda_gen_init(). And
this EAPD setup is again overridden in alc_auto_init_amp().
For recovering from the regression, tell snd_hda_gen_init() not to
apply the verbs there by a new flag, then apply the verbs in
alc_init().
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=204727
Fixes: 607ca3bd22 ("ALSA: hda/realtek - EAPD turn on later")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Let's add some unit tests for the recent bugs we just fixed.
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Thomas Graichen <thomas.graichen@gmail.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190827115850.25731-4-mripard@kernel.org
The named modes support has introduced a number of glitches that were in
part due to the fact that the parser will take any string as a named mode.
Since we shouldn't have a lot of options there (and they should be pretty
standard), let's introduce a whitelist of the available named modes so that
the kernel can differentiate between a poorly formed command line and a
named mode.
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Thomas Graichen <thomas.graichen@gmail.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190827115850.25731-3-mripard@kernel.org
The command line parser when it has been rewritten introduced a regression
when the only thing on the command line is an option to force the detection
of a connector (such as video=HDMI-A-1:d), which are completely valid.
It's been further broken by the support for the named modes which take
anything that is not a resolution as a named mode.
Let's fix this by running the extra command line option parser on the named
modes if they only take a single character.
Fixes: e08ab74bd4 ("drm/modes: Rewrite the command line parser")
Reported-by: Jernej Škrabec <jernej.skrabec@gmail.com>
Reported-by: Thomas Graichen <thomas.graichen@googlemail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Thomas Graichen <thomas.graichen@gmail.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190827115850.25731-2-mripard@kernel.org
Some extra command line options can be either specified without anything
else on the command line (basically all the force connection options), but
some other are only relevant when matched with a resolution (margin and
interlace).
Let's add a switch to restrict if needed the available option set.
Fixes: e08ab74bd4 ("drm/modes: Rewrite the command line parser")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Thomas Graichen <thomas.graichen@gmail.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190827115850.25731-1-mripard@kernel.org
The IP datasheet says this controller is compatible with SD Host
Specification Version v4.00.
As it turned out, the ADMA of this IP does not work with 64-bit mode
when it is in the Version 3.00 compatible mode; it understands the
old 64-bit descriptor table (as defined in SDHCI v2), but the ADMA
System Address Register (SDHCI_ADMA_ADDRESS) cannot point to the
64-bit address.
I noticed this issue only after commit bd2e75633c ("dma-contiguous:
use fallback alloc_pages for single pages"). Prior to that commit,
dma_set_mask_and_coherent() returned the dma address that fits in
32-bit range, at least for the default arm64 configuration
(arch/arm64/configs/defconfig). Now the host->adma_addr exceeds the
32-bit limit, causing the real problem for the Socionext SoCs.
(As a side-note, I was also able to reproduce the issue for older
kernels by turning off CONFIG_DMA_CMA.)
Call sdhci_enable_v4_mode() to fix this.
Cc: <stable@vger.kernel.org> # v4.20+
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The register SDHCI_CLOCK_CONTROL should be cleared before config clock
divider, otherwise the frequency configured maybe lower than we
expected.
Fixes: fb8bd90f83 ("mmc: sdhci-sprd: Add Spreadtrum's initial host controller")
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Signed-off-by: Chunyan Zhang <zhang.lyra@gmail.com>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Tested-by: Baolin Wang <baolin.wang@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The OCR register defines the supported range of VDD voltages for SD cards.
However, it has turned out that some SD cards reports an invalid voltage
range, for example having bit7 set.
When a host supports MMC_CAP2_FULL_PWR_CYCLE and some of the voltages from
the invalid VDD range, this triggers the core to run a power cycle of the
card to try to initialize it at the lowest common supported voltage.
Obviously this fails, since the card can't support it.
Let's fix this problem, by clearing invalid bits from the read OCR register
for SD cards, before proceeding with the VDD voltage negotiation.
Cc: stable@vger.kernel.org
Reported-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Philip Langdale <philipl@overt.org>
Tested-by: Philip Langdale <philipl@overt.org>
Tested-by: Manuel Presnitz <mail@mpy.de>
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Merge tag '5.3-rc6-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"A few small SMB3 fixes, and a larger one to fix various older string
handling functions"
* tag '5.3-rc6-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update internal module number
cifs: replace various strncpy with strscpy and similar
cifs: Use kzfree() to zero out the password
cifs: set domainName when a domain-key is used in multiuser
Get the vlan_proto of ingress bridge in network byteorder as userspace
expects. Otherwise this is inconsistent with NFT_META_PROTOCOL.
Fixes: 2a3a93ef0b ("netfilter: nft_meta_bridge: Add NFT_META_BRI_IIFVPROTO support")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
- Make qxl reservel the vga ports using vgaargb to prevent switching to vga compatibility mode.
- Fix omap port lookup for SDI output
- Use virtio_max_dma_size to fix an issue with swiotlb.
- Compiler fixes to komeda.
- Add missing of_node_get() call in komeda.
- Reorder the komeda de-init functions.
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Merge tag 'drm-misc-fixes-2019-08-28' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
drm-misc-fixes for v5.3 (rc7?):
- Make qxl reservel the vga ports using vgaargb to prevent switching to vga compatibility mode.
- Fix omap port lookup for SDI output
- Use virtio_max_dma_size to fix an issue with swiotlb.
- Compiler fixes to komeda.
- Add missing of_node_get() call in komeda.
- Reorder the komeda de-init functions.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/f187c28b-6279-2c4f-3e53-296ee899133b@linux.intel.com
* one fix for a driver as I'm covering for Kalle while he's on vacation
* two fixes for eapol-over-nl80211 work
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Merge tag 'mac80211-for-davem-2019-08-29' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
We have
* one fix for a driver as I'm covering for Kalle while he's on vacation
* two fixes for eapol-over-nl80211 work
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Raise the config max for lpfc_fcp_mq_threshold variable to 256.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
CC: Hannes Reinecke <hare@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
