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After returning from unregister_netdevice_notifier_dev_net(), set the
notifier_call field to NULL so successive call to mlx5_lag_add() will
function as expected.
Fixes: 7907f23adc18 ("net/mlx5: Implement RoCE LAG feature")
Signed-off-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Vlad Buslov <vladbu@mellanox.com>
Reviewed-by: Raed Salem <raeds@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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The mask value is provided as 64 bit and has to be casted in
either 32 or 16 bit. On big endian systems the wrong half was
casted which resulted in an all zero mask.
Fixes: 2b64beba0251 ("net/mlx5e: Support header re-write of partial fields in TC pedit offload")
Signed-off-by: Sebastian Hense <sebastian.hense1@ibm.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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Fix to match the HW spec: TRACKING state is 1, SEARCHING is 2.
No real issue for now, as these values are not currently used.
Fixes: d2ead1f360e8 ("net/mlx5e: Add kTLS TX HW offload support")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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We have an off-by-1 issue in the TCP seq comparison.
The last sequence number that belongs to the TCP packet's payload
is not "start_seq + len", but one byte before it.
Fix it so the 'ends_before' is evaluated properly.
This fixes a bug that results in error completions in the
kTLS HW offload flows.
Fixes: ffbd9ca94e2e ("net/mlx5e: kTLS, Fix corner-case checks in TX resync flow")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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Fix the send info write length to be (actions x action) size in bytes.
Fixes: 297cccebdc5a ("net/mlx5: DR, Expose an internal API to issue RDMA operations")
Signed-off-by: Hamdan Igbaria <hamdani@mellanox.com>
Reviewed-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
Kalle Valo says:
====================
wireless-drivers fixes for v5.6
Second set of fixes for v5.6. Only two small fixes this time.
iwlwifi
* fix another initialisation regression with 3168 devices
mt76
* fix memory corruption with too many rx fragments
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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We now ignore the "completion" event when using tx queue timestamping,
and only pay attention to the two (high and low) timestamp events. The
NIC will send a pair of timestamp events for every packet transmitted.
The current firmware may merge the completion events, and it is possible
that future versions may reorder the completion and timestamp events.
As such the completion event is not useful.
Without this patch in place a merged completion event on a queue with
timestamping will cause a "spurious TX completion" error. This affects
SFN8000-series adapters.
Signed-off-by: Tom Zhao <tzhao@solarflare.com>
Acked-by: Martin Habets <mhabets@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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struct_ops map cannot support map_freeze. Otherwise, a struct_ops
cannot be unregistered from the subsystem.
Fixes: 85d33df357b6 ("bpf: Introduce BPF_MAP_TYPE_STRUCT_OPS")
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200305013454.535397-1-kafai@fb.com
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The current always succeed behavior in bpf_struct_ops_map_delete_elem()
is not ideal for userspace tool. It can be improved to return proper
error value.
If it is in TOBEFREE, it means unregistration has been already done
before but it is in progress and waiting for the subsystem to clear
the refcnt to zero, so -EINPROGRESS.
If it is INIT, it means the struct_ops has not been registered yet,
so -ENOENT.
Fixes: 85d33df357b6 ("bpf: Introduce BPF_MAP_TYPE_STRUCT_OPS")
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200305013447.535326-1-kafai@fb.com
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Yonghong Song says:
====================
Commit 8b401f9ed244 ("bpf: implement bpf_send_signal() helper")
introduced bpf_send_signal() helper and Commit 8482941f0906
("bpf: Add bpf_send_signal_thread() helper") added bpf_send_signal_thread()
helper. Both helpers try to send a signel to current process or thread.
When bpf_prog is called with scheduler rq_lock held, a deadlock
could happen since bpf_send_signal() and bpf_send_signal_thread()
will call group_send_sig_info() which may ultimately want to acquire
rq_lock() again. This happens in 5.2 and 4.16 based kernels in our
production environment with perf_sw_event.
In a different scenario, the following is also possible in the last kernel:
cpu 1:
do_task_stat <- holding sighand->siglock
...
task_sched_runtime <- trying to grab rq_lock
cpu 2:
__schedule <- holding rq_lock
...
do_send_sig_info <- trying to grab sighand->siglock
Commit eac9153f2b58 ("bpf/stackmap: Fix deadlock with
rq_lock in bpf_get_stack()") has a similar issue with above
rq_lock() deadlock. This patch set addressed the issue
in a similar way. Patch #1 provided kernel solution and
Patch #2 added a selftest.
Changelogs:
v2 -> v3:
. simplify selftest send_signal_sched_switch().
The previous version has mmap/munmap inherited
from Song's reproducer. They are not necessary
in this context.
v1 -> v2:
. previous fix using task_work in nmi() is incorrect.
there is no nmi() involvement here. Using task_work
in all cases might be a solution. But decided to
use a similar fix as in Commit eac9153f2b58.
====================
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Added one test, send_signal_sched_switch, to test bpf_send_signal()
helper triggered by sched/sched_switch tracepoint. This test can be used
to verify kernel deadlocks fixed by the previous commit. The test itself
is heavily borrowed from Commit eac9153f2b58 ("bpf/stackmap: Fix deadlock
with rq_lock in bpf_get_stack()").
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Cc: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200304191105.2796601-1-yhs@fb.com
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When experimenting with bpf_send_signal() helper in our production
environment (5.2 based), we experienced a deadlock in NMI mode:
#5 [ffffc9002219f770] queued_spin_lock_slowpath at ffffffff8110be24
#6 [ffffc9002219f770] _raw_spin_lock_irqsave at ffffffff81a43012
#7 [ffffc9002219f780] try_to_wake_up at ffffffff810e7ecd
#8 [ffffc9002219f7e0] signal_wake_up_state at ffffffff810c7b55
#9 [ffffc9002219f7f0] __send_signal at ffffffff810c8602
#10 [ffffc9002219f830] do_send_sig_info at ffffffff810ca31a
#11 [ffffc9002219f868] bpf_send_signal at ffffffff8119d227
#12 [ffffc9002219f988] bpf_overflow_handler at ffffffff811d4140
#13 [ffffc9002219f9e0] __perf_event_overflow at ffffffff811d68cf
#14 [ffffc9002219fa10] perf_swevent_overflow at ffffffff811d6a09
#15 [ffffc9002219fa38] ___perf_sw_event at ffffffff811e0f47
#16 [ffffc9002219fc30] __schedule at ffffffff81a3e04d
#17 [ffffc9002219fc90] schedule at ffffffff81a3e219
#18 [ffffc9002219fca0] futex_wait_queue_me at ffffffff8113d1b9
#19 [ffffc9002219fcd8] futex_wait at ffffffff8113e529
#20 [ffffc9002219fdf0] do_futex at ffffffff8113ffbc
#21 [ffffc9002219fec0] __x64_sys_futex at ffffffff81140d1c
#22 [ffffc9002219ff38] do_syscall_64 at ffffffff81002602
#23 [ffffc9002219ff50] entry_SYSCALL_64_after_hwframe at ffffffff81c00068
The above call stack is actually very similar to an issue
reported by Commit eac9153f2b58 ("bpf/stackmap: Fix deadlock with
rq_lock in bpf_get_stack()") by Song Liu. The only difference is
bpf_send_signal() helper instead of bpf_get_stack() helper.
The above deadlock is triggered with a perf_sw_event.
Similar to Commit eac9153f2b58, the below almost identical reproducer
used tracepoint point sched/sched_switch so the issue can be easily caught.
/* stress_test.c */
#include <stdio.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <pthread.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#define THREAD_COUNT 1000
char *filename;
void *worker(void *p)
{
void *ptr;
int fd;
char *pptr;
fd = open(filename, O_RDONLY);
if (fd < 0)
return NULL;
while (1) {
struct timespec ts = {0, 1000 + rand() % 2000};
ptr = mmap(NULL, 4096 * 64, PROT_READ, MAP_PRIVATE, fd, 0);
usleep(1);
if (ptr == MAP_FAILED) {
printf("failed to mmap\n");
break;
}
munmap(ptr, 4096 * 64);
usleep(1);
pptr = malloc(1);
usleep(1);
pptr[0] = 1;
usleep(1);
free(pptr);
usleep(1);
nanosleep(&ts, NULL);
}
close(fd);
return NULL;
}
int main(int argc, char *argv[])
{
void *ptr;
int i;
pthread_t threads[THREAD_COUNT];
if (argc < 2)
return 0;
filename = argv[1];
for (i = 0; i < THREAD_COUNT; i++) {
if (pthread_create(threads + i, NULL, worker, NULL)) {
fprintf(stderr, "Error creating thread\n");
return 0;
}
}
for (i = 0; i < THREAD_COUNT; i++)
pthread_join(threads[i], NULL);
return 0;
}
and the following command:
1. run `stress_test /bin/ls` in one windown
2. hack bcc trace.py with the following change:
--- a/tools/trace.py
+++ b/tools/trace.py
@@ -513,6 +513,7 @@ BPF_PERF_OUTPUT(%s);
__data.tgid = __tgid;
__data.pid = __pid;
bpf_get_current_comm(&__data.comm, sizeof(__data.comm));
+ bpf_send_signal(10);
%s
%s
%s.perf_submit(%s, &__data, sizeof(__data));
3. in a different window run
./trace.py -p $(pidof stress_test) t:sched:sched_switch
The deadlock can be reproduced in our production system.
Similar to Song's fix, the fix is to delay sending signal if
irqs is disabled to avoid deadlocks involving with rq_lock.
With this change, my above stress-test in our production system
won't cause deadlock any more.
I also implemented a scale-down version of reproducer in the
selftest (a subsequent commit). With latest bpf-next,
it complains for the following potential deadlock.
[ 32.832450] -> #1 (&p->pi_lock){-.-.}:
[ 32.833100] _raw_spin_lock_irqsave+0x44/0x80
[ 32.833696] task_rq_lock+0x2c/0xa0
[ 32.834182] task_sched_runtime+0x59/0xd0
[ 32.834721] thread_group_cputime+0x250/0x270
[ 32.835304] thread_group_cputime_adjusted+0x2e/0x70
[ 32.835959] do_task_stat+0x8a7/0xb80
[ 32.836461] proc_single_show+0x51/0xb0
...
[ 32.839512] -> #0 (&(&sighand->siglock)->rlock){....}:
[ 32.840275] __lock_acquire+0x1358/0x1a20
[ 32.840826] lock_acquire+0xc7/0x1d0
[ 32.841309] _raw_spin_lock_irqsave+0x44/0x80
[ 32.841916] __lock_task_sighand+0x79/0x160
[ 32.842465] do_send_sig_info+0x35/0x90
[ 32.842977] bpf_send_signal+0xa/0x10
[ 32.843464] bpf_prog_bc13ed9e4d3163e3_send_signal_tp_sched+0x465/0x1000
[ 32.844301] trace_call_bpf+0x115/0x270
[ 32.844809] perf_trace_run_bpf_submit+0x4a/0xc0
[ 32.845411] perf_trace_sched_switch+0x10f/0x180
[ 32.846014] __schedule+0x45d/0x880
[ 32.846483] schedule+0x5f/0xd0
...
[ 32.853148] Chain exists of:
[ 32.853148] &(&sighand->siglock)->rlock --> &p->pi_lock --> &rq->lock
[ 32.853148]
[ 32.854451] Possible unsafe locking scenario:
[ 32.854451]
[ 32.855173] CPU0 CPU1
[ 32.855745] ---- ----
[ 32.856278] lock(&rq->lock);
[ 32.856671] lock(&p->pi_lock);
[ 32.857332] lock(&rq->lock);
[ 32.857999] lock(&(&sighand->siglock)->rlock);
Deadlock happens on CPU0 when it tries to acquire &sighand->siglock
but it has been held by CPU1 and CPU1 tries to grab &rq->lock
and cannot get it.
This is not exactly the callstack in our production environment,
but sympotom is similar and both locks are using spin_lock_irqsave()
to acquire the lock, and both involves rq_lock. The fix to delay
sending signal when irq is disabled also fixed this issue.
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200304191104.2796501-1-yhs@fb.com
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If secure_computing() rejected a system call, we were previously setting
the system call number to -1, to indicate to later code that the syscall
failed. However, if something (e.g. a user notification) was sleeping, and
received a signal, we may set a0 to -ERESTARTSYS and re-try the system call
again.
In this case, seccomp "denies" the syscall (because of the signal), and we
would set a7 to -1, thus losing the value of the system call we want to
restart.
Instead, let's return -1 from do_syscall_trace_enter() to indicate that the
syscall was rejected, so we don't clobber the value in case of -ERESTARTSYS
or whatever.
This commit fixes the user_notification_signal seccomp selftest on riscv to
no longer hang. That test expects the system call to be re-issued after the
signal, and it wasn't due to the above bug. Now that it is, everything
works normally.
Note that in the ptrace (tracer) case, the tracer can set the register
values to whatever they want, so we still need to keep the code that
handles out-of-bounds syscalls. However, we can drop the comment.
We can also drop syscall_set_nr(), since it is no longer used anywhere, and
the code that re-loads the value in a7 because of it.
Reported in: https://lore.kernel.org/bpf/CAEn-LTp=ss0Dfv6J00=rCAy+N78U2AmhqJNjfqjr2FDpPYjxEQ@mail.gmail.com/
Reported-by: David Abdurachmanov <david.abdurachmanov@gmail.com>
Signed-off-by: Tycho Andersen <tycho@tycho.ws>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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There was a recent change in blktrace.c that added a RCU protection to
`q->blk_trace` in order to fix a use-after-free issue during access.
However the change missed an edge case that can lead to dereferencing of
`bt` pointer even when it's NULL:
Coverity static analyzer marked this as a FORWARD_NULL issue with CID
1460458.
```
/kernel/trace/blktrace.c: 1904 in sysfs_blk_trace_attr_store()
1898 ret = 0;
1899 if (bt == NULL)
1900 ret = blk_trace_setup_queue(q, bdev);
1901
1902 if (ret == 0) {
1903 if (attr == &dev_attr_act_mask)
>>> CID 1460458: Null pointer dereferences (FORWARD_NULL)
>>> Dereferencing null pointer "bt".
1904 bt->act_mask = value;
1905 else if (attr == &dev_attr_pid)
1906 bt->pid = value;
1907 else if (attr == &dev_attr_start_lba)
1908 bt->start_lba = value;
1909 else if (attr == &dev_attr_end_lba)
```
Added a reassignment with RCU annotation to fix the issue.
Fixes: c780e86dd48 ("blktrace: Protect q->blk_trace with RCU")
Cc: stable@vger.kernel.org
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Bob Liu <bob.liu@oracle.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Cengiz Can <cengiz@kernel.wtf>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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8250_dw has been split to library part and the driver, the library
is being used by 8250_lpss, which represents Synosys DesignWare UART
(with optional Synopsys Designware DMA) enumerated by PCI.
Add missed above mentioned files to the database record for review.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200305123108.41320-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add ACCES VIDs and PIDs that use the Exar chips
Signed-off-by: Jay Dolan <jay.dolan@accesio.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200305140504.22237-1-jay.dolan@accesio.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add the ability to reboot the HiFive Unleashed board via GPIO.
Signed-off-by: Yash Shah <yash.shah@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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in this place, the function should return a
negative value and the PTR_ERR already returns
a negative,so return -PTR_ERR() is wrong.
Signed-off-by: tangbin <tangbin@cmss.chinamobile.com>
Cc: stable <stable@vger.kernel.org>
Acked-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200305013823.20976-1-tangbin@cmss.chinamobile.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When fibre port supports auto-negotiation, the IMP(Intelligent
Management Process) processes the speed of auto-negotiation
and the user's speed separately.
For below case, the port will get a not link up problem.
step 1: disables auto-negotiation and sets speed to A, then
the driver's MAC speed will be updated to A.
step 2: enables auto-negotiation and MAC gets negotiated
speed B, then the driver's MAC speed will be updated to B
through querying in periodical task.
step 3: MAC gets new negotiated speed A.
step 4: disables auto-negotiation and sets speed to B before
periodical task query new MAC speed A, the driver will ignore
the speed configuration.
This patch fixes it by skipping speed and duplex checking when
fibre port supports auto-negotiation.
Fixes: 22f48e24a23d ("net: hns3: add autoneg and change speed support for fibre port")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Before accessing various fields in IPV4 network header
and TCP header, make sure the packet :
- Has IP version 4 (ip->version == 4)
- Has not a silly network length (ip->ihl >= 5)
- Is big enough to hold network and transport headers
- Has not a silly TCP header size (th->doff >= sizeof(struct tcphdr) / 4)
syzbot reported :
BUG: KMSAN: uninit-value in slhc_compress+0x5b9/0x2e60 drivers/net/slip/slhc.c:270
CPU: 0 PID: 11728 Comm: syz-executor231 Not tainted 5.6.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1c9/0x220 lib/dump_stack.c:118
kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118
__msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215
slhc_compress+0x5b9/0x2e60 drivers/net/slip/slhc.c:270
ppp_send_frame drivers/net/ppp/ppp_generic.c:1637 [inline]
__ppp_xmit_process+0x1902/0x2970 drivers/net/ppp/ppp_generic.c:1495
ppp_xmit_process+0x147/0x2f0 drivers/net/ppp/ppp_generic.c:1516
ppp_write+0x6bb/0x790 drivers/net/ppp/ppp_generic.c:512
do_loop_readv_writev fs/read_write.c:717 [inline]
do_iter_write+0x812/0xdc0 fs/read_write.c:1000
compat_writev+0x2df/0x5a0 fs/read_write.c:1351
do_compat_pwritev64 fs/read_write.c:1400 [inline]
__do_compat_sys_pwritev fs/read_write.c:1420 [inline]
__se_compat_sys_pwritev fs/read_write.c:1414 [inline]
__ia32_compat_sys_pwritev+0x349/0x3f0 fs/read_write.c:1414
do_syscall_32_irqs_on arch/x86/entry/common.c:339 [inline]
do_fast_syscall_32+0x3c7/0x6e0 arch/x86/entry/common.c:410
entry_SYSENTER_compat+0x68/0x77 arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f7cd99
Code: 90 e8 0b 00 00 00 f3 90 0f ae e8 eb f9 8d 74 26 00 89 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000ffdb84ac EFLAGS: 00000217 ORIG_RAX: 000000000000014e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000200001c0
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000040047459 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline]
kmsan_internal_poison_shadow+0x66/0xd0 mm/kmsan/kmsan.c:127
kmsan_slab_alloc+0x8a/0xe0 mm/kmsan/kmsan_hooks.c:82
slab_alloc_node mm/slub.c:2793 [inline]
__kmalloc_node_track_caller+0xb40/0x1200 mm/slub.c:4401
__kmalloc_reserve net/core/skbuff.c:142 [inline]
__alloc_skb+0x2fd/0xac0 net/core/skbuff.c:210
alloc_skb include/linux/skbuff.h:1051 [inline]
ppp_write+0x115/0x790 drivers/net/ppp/ppp_generic.c:500
do_loop_readv_writev fs/read_write.c:717 [inline]
do_iter_write+0x812/0xdc0 fs/read_write.c:1000
compat_writev+0x2df/0x5a0 fs/read_write.c:1351
do_compat_pwritev64 fs/read_write.c:1400 [inline]
__do_compat_sys_pwritev fs/read_write.c:1420 [inline]
__se_compat_sys_pwritev fs/read_write.c:1414 [inline]
__ia32_compat_sys_pwritev+0x349/0x3f0 fs/read_write.c:1414
do_syscall_32_irqs_on arch/x86/entry/common.c:339 [inline]
do_fast_syscall_32+0x3c7/0x6e0 arch/x86/entry/common.c:410
entry_SYSENTER_compat+0x68/0x77 arch/x86/entry/entry_64_compat.S:139
Fixes: b5451d783ade ("slip: Move the SLIP drivers")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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My Netronome address is no longer active. I am no maintainer, but
get_maintainer.pl sometimes returns my name for a small number of
files (BPF-related). Add an entry to .mailmap for good measure.
Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200226171353.18982-1-quentin@isovalent.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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We select Goldfish RTC driver using QEMU virt machine kconfig option
to access RTC device on QEMU virt machine.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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The SYSCON Reboot and Poweroff drivers can be used on QEMU virt machine
to reboot or poweroff the system hence we select these drivers using
QEMU virt machine kconfig option.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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|
We have kconfig option for QEMU virt machine so let's enable it
in RV32 and RV64 defconfigs. Also, we remove various VIRTIO configs
from RV32 and RV64 defconfigs because these are now selected by
QEMU virt machine kconfig option.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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We add kconfig option for QEMU virt machine and select all
required VIRTIO drivers using this kconfig option.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull Hyper-V update from Wei Liu:
- Update MAINTAINERS file for Hyper-V
- One cleanup patch for Hyper-V HID driver
* tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
HID: hyperv: NULL check before some freeing functions is not needed.
Hyper-V: add myself as a maintainer
Hyper-V: Drop Sasha Levin from the Hyper-V maintainers
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git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul:
"A bunch of driver fixes:
- Doc updates to clean warnings for dmaengine
- Fixes for newly added Intel idxd driver
- More fixes for newly added TI k3-udma driver
- Fixes for IMX and Tegra drivers"
* tag 'dmaengine-fix-5.6-rc5' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: imx-sdma: Fix the event id check to include RX event for UART6
dmaengine: tegra-apb: Prevent race conditions of tasklet vs free list
dmaengine: tegra-apb: Fix use-after-free
dmaengine: imx-sdma: fix context cache
dmaengine: idxd: wq size configuration needs to check global max size
dmaengine: idxd: sysfs input of wq incorrect wq type should return error
dmaengine: coh901318: Fix a double lock bug in dma_tc_handle()
dmaengine: idxd: correct reserved token calculation
dmaengine: ti: k3-udma: Fix terminated transfer handling
dmaengine: ti: k3-udma: Use the channel direction in pause/resume functions
dmaengine: ti: k3-udma: Use the TR counter helper for slave_sg and cyclic
dmaengine: ti: k3-udma: Move the TR counter calculation to helper function
dmaengine: ti: k3-udma: Workaround for RX teardown with stale data in peer
dmaengine: ti: k3-udma: Use ktime/usleep_range based TX completion check
dmaengine: idxd: Fix error handling in idxd_wq_cdev_dev_setup()
dmaengine: doc: fix warnings/issues of client.rst
dmaengine: idxd: fix runaway module ref count on device driver bind
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CTA-861-F explicitly states that for RGB colorspace colorimetry should
be set to "none". Fix that.
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Fixes: def23aa7e982 ("drm: bridge: dw-hdmi: Switch to V4L bus format and encodings")
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20200304232512.51616-2-jernej.skrabec@siol.net
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Commit 0265d6e8ddb890 ("xen/blkfront: limit allocated memory size to
actual use case") made struct blkfront_ring_info size dynamic. This is
fine when running with only one queue, but with multiple queues the
addressing of the single queues has to be adapted as the structs are
allocated in an array.
Fixes: 0265d6e8ddb890 ("xen/blkfront: limit allocated memory size to actual use case")
Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Tested-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Juergen Gross <jgross@suse.com>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Link: https://lore.kernel.org/r/20200305155129.28326-1-jgross@suse.com
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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Commit 060eabe8fbe726 ("xenbus/backend: Protect xenbus callback with
lock") introduced a bug by holding a lock while calling a function
which might schedule.
Fix that by using a semaphore instead.
Fixes: 060eabe8fbe726 ("xenbus/backend: Protect xenbus callback with lock")
Signed-off-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20200305100323.16736-1-jgross@suse.com
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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This patch adds the barrier to guarantee that req->err is always updated
before req->state.
Otherwise, read_reply() would not return ERR_PTR(req->err) but
req->body, when process_writes()->xb_write() is failed.
Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Link: https://lore.kernel.org/r/20200303221423.21962-2-dongli.zhang@oracle.com
Reviewed-by: Julien Grall <jgrall@amazon.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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The req->body should be updated before req->state is updated and the
order should be guaranteed by a barrier.
Otherwise, read_reply() might return req->body = NULL.
Below is sample callstack when the issue is reproduced on purpose by
reordering the updates of req->body and req->state and adding delay in
code between updates of req->state and req->body.
[ 22.356105] general protection fault: 0000 [#1] SMP PTI
[ 22.361185] CPU: 2 PID: 52 Comm: xenwatch Not tainted 5.5.0xen+ #6
[ 22.366727] Hardware name: Xen HVM domU, BIOS ...
[ 22.372245] RIP: 0010:_parse_integer_fixup_radix+0x6/0x60
... ...
[ 22.392163] RSP: 0018:ffffb2d64023fdf0 EFLAGS: 00010246
[ 22.395933] RAX: 0000000000000000 RBX: 75746e7562755f6d RCX: 0000000000000000
[ 22.400871] RDX: 0000000000000000 RSI: ffffb2d64023fdfc RDI: 75746e7562755f6d
[ 22.405874] RBP: 0000000000000000 R08: 00000000000001e8 R09: 0000000000cdcdcd
[ 22.410945] R10: ffffb2d6402ffe00 R11: ffff9d95395eaeb0 R12: ffff9d9535935000
[ 22.417613] R13: ffff9d9526d4a000 R14: ffff9d9526f4f340 R15: ffff9d9537654000
[ 22.423726] FS: 0000000000000000(0000) GS:ffff9d953bc80000(0000) knlGS:0000000000000000
[ 22.429898] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 22.434342] CR2: 000000c4206a9000 CR3: 00000001ea3fc002 CR4: 00000000001606e0
[ 22.439645] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 22.444941] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 22.450342] Call Trace:
[ 22.452509] simple_strtoull+0x27/0x70
[ 22.455572] xenbus_transaction_start+0x31/0x50
[ 22.459104] netback_changed+0x76c/0xcc1 [xen_netfront]
[ 22.463279] ? find_watch+0x40/0x40
[ 22.466156] xenwatch_thread+0xb4/0x150
[ 22.469309] ? wait_woken+0x80/0x80
[ 22.472198] kthread+0x10e/0x130
[ 22.474925] ? kthread_park+0x80/0x80
[ 22.477946] ret_from_fork+0x35/0x40
[ 22.480968] Modules linked in: xen_kbdfront xen_fbfront(+) xen_netfront xen_blkfront
[ 22.486783] ---[ end trace a9222030a747c3f7 ]---
[ 22.490424] RIP: 0010:_parse_integer_fixup_radix+0x6/0x60
The virt_rmb() is added in the 'true' path of test_reply(). The "while"
is changed to "do while" so that test_reply() is used as a read memory
barrier.
Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Link: https://lore.kernel.org/r/20200303221423.21962-1-dongli.zhang@oracle.com
Reviewed-by: Julien Grall <jgrall@amazon.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
This issue was found with the help of Coccinelle.
[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Link: https://lore.kernel.org/r/20200226212612.GA4663@embeddedor
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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A headset on the laptop like ASUS B9450FA does not work, until quirk
ALC294_FIXUP_ASUS_HPE is applied.
Signed-off-by: Jian-Hong Pan <jian-hong@endlessm.com>
Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200225072920.109199-1-jian-hong@endlessm.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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from s3 (v2)
This interface is for dGPU Navi1x. Linux dc-pplib interface depends
on window driver dc implementation.
For Navi1x, clock settings of dcn watermarks are fixed. the settings
should be passed to smu during boot up and resume from s3.
boot up: dc calculate dcn watermark clock settings within dc_create,
dcn20_resource_construct, then call pplib functions below to pass
the settings to smu:
smu_set_watermarks_for_clock_ranges
smu_set_watermarks_table
navi10_set_watermarks_table
smu_write_watermarks_table
For Renoir, clock settings of dcn watermark are also fixed values.
dc has implemented different flow for window driver:
dc_hardware_init / dc_set_power_state
dcn10_init_hw
notify_wm_ranges
set_wm_ranges
For Linux
smu_set_watermarks_for_clock_ranges
renoir_set_watermarks_table
smu_write_watermarks_table
dc_hardware_init -> amdgpu_dm_init
dc_set_power_state --> dm_resume
therefore, linux dc-pplib interface of navi10/12/14 is different
from that of Renoir.
v2: add missing unlock in error case
Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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When hit COMBINATIONAL_BYPASS the mclk will be bypass and can export
fclk frequency to user usage.
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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This fix will handle some MP1 FW issue like as mclk dpm table in renoir has a reverse
dpm clock layout and a zero frequency dpm level as following case.
cat pp_dpm_mclk
0: 1200Mhz
1: 1200Mhz
2: 800Mhz
3: 0Mhz
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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[Why]
Swath sizes are being calculated incorrectly. The horizontal swath size
should be the product of block height, viewport width, and bytes per
element, but the calculation uses viewport height instead of width. The
vertical swath size is similarly incorrectly calculated. The effect of
this is that we report the wrong DCC caps.
[How]
Use viewport width in the horizontal swath size calculation and viewport
height in the vertical swath size calculation.
Signed-off-by: Josip Pavic <Josip.Pavic@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[Why]
If we have a single MST display and we disconnect it, we dont disable that
link. This causes the old link settings to still exist
Now on a replug for MST we think its a link loss and will try to reallocate
mst payload which will fail, throwing warning below.
[ 129.374192] [drm] Failed to updateMST allocation table forpipe idx:0
[ 129.374206] ------------[ cut here ]------------
[ 129.374284] WARNING: CPU: 14 PID: 1710 at
drivers/gpu/drm/amd/amdgpu/../dal-dev/dc/core/dc_link.c:3153
dc_link_allocate_mst_payload+0x1f7/0x220 [amdgpu]
[ 129.374285] Modules linked in: amdgpu(OE) amd_iommu_v2 gpu_sched ttm
drm_kms_helper drm fb_sys_fops syscopyarea sysfillrect sysimgblt
binfmt_misc nls_iso8859_1 edac_mce_amd snd_hda_codec_realtek
snd_hda_codec_generic ledtrig_audio kvm snd_hda_codec_hdmi snd_hda_intel
snd_intel_nhlt snd_hda_codec irqbypass snd_hda_core snd_hwdep snd_pcm
snd_seq_midi snd_seq_midi_event snd_rawmidi crct10dif_pclmul snd_seq
crc32_pclmul ghash_clmulni_intel snd_seq_device snd_timer snd aesni_intel
eeepc_wmi crypto_simd asus_wmi joydev cryptd sparse_keymap input_leds
soundcore video glue_helper wmi_bmof mxm_wmi k10temp ccp mac_hid
sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4
hid_generic usbhid hid igb i2c_algo_bit ahci dca i2c_piix4 libahci
gpio_amdpt wmi gpio_generic
[ 129.374318] CPU: 14 PID: 1710 Comm: kworker/14:2 Tainted: G W OE 5.4.0-rc7bhawan+ #480
[ 129.374318] Hardware name: System manufacturer System Product Name/PRIME X370-PRO, BIOS 0515 03/30/2017
[ 129.374397] Workqueue: events dm_irq_work_func [amdgpu]
[ 129.374468] RIP: 0010:dc_link_allocate_mst_payload+0x1f7/0x220 [amdgpu]
[ 129.374470] Code: 52 20 e8 1c 63 ad f4 48 8b 5d d0 65 48 33 1c 25 28 00
00 00 b8 01 00 00 00 75 16 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3
<0f> 0b e9 fa fe ff ff e8 ed 5b d6 f3 41 0f b6 b6 c4 02 00 00 48 c7
[ 129.374471] RSP: 0018:ffff9f9141e7fcc0 EFLAGS: 00010246
[ 129.374472] RAX: 0000000000000000 RBX: ffff91ef0762f800 RCX: 0000000000000000
[ 129.374473] RDX: 0000000000000005 RSI: ffffffffc0c4a988 RDI: 0000000000000004
[ 129.374474] RBP: ffff9f9141e7fd10 R08: 0000000000000005 R09: 0000000000000000
[ 129.374475] R10: 0000000000000002 R11: 0000000000000001 R12: ffff91eebd510c00
[ 129.374475] R13: ffff91eebd510e58 R14: ffff91ef052c01b8 R15: 0000000000000006
[ 129.374476] FS: 0000000000000000(0000) GS:ffff91ef0ef80000(0000) knlGS:0000000000000000
[ 129.374477] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 129.374478] CR2: 000055623ea01d50 CR3: 0000000408a8c000 CR4: 00000000003406e0
[ 129.374479] Call Trace:
[ 129.374550] dc_link_reallocate_mst_payload+0x12e/0x150 [amdgpu]
[ 129.374617] dc_link_handle_hpd_rx_irq+0x6d4/0x6e0 [amdgpu]
[ 129.374693] handle_hpd_rx_irq+0x77/0x310 [amdgpu]
[ 129.374768] dm_irq_work_func+0x53/0x70 [amdgpu]
[ 129.374774] process_one_work+0x1fd/0x3f0
[ 129.374776] worker_thread+0x255/0x410
[ 129.374778] kthread+0x121/0x140
[ 129.374780] ? process_one_work+0x3f0/0x3f0
[ 129.374781] ? kthread_park+0x90/0x90
[ 129.374785] ret_from_fork+0x22/0x40
[How]
when we disable MST we should clear the cur link settings (lane_count=0 is
good enough). This will cause us to not reallocate payloads earlier than
expected and not throw the warning
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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|
[why]
CP firmware decide to skip setting the state for 3D pipe 1 for Navi1x as there
is no use case.
[how]
Disable 3D pipe 1 on Navi1x.
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Signed-off-by: Tianci.Yin <tianci.yin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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|
The Gigabyte X570 Aorus Master motherboard with ALC1220 codec
requires a similar workaround for Clevo laptops to enforce the
DAC/mixer connection path. Set up a quirk entry for that.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=205275
Signed-off-by: Christian Lachner <gladiac@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200223092416.15016-2-gladiac@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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|
ThinkPad want to support Headset Button control.
This patch will enable it.
Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/7f0b7128f40f41f6b5582ff610adc33d@realtek.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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|
Dell desktop platform supported headset Mic.
Add pin verb to enable headset Mic.
This platform only support fixed type headset for Iphone type.
Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/b9da28d772ef43088791b0f3675929e7@realtek.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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|
This was evidently copy and pasted from the i915 driver, but the text
wasn't updated.
Fixes: 4f337faf1c55 ("KVM: allow disabling -Werror")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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|
Fix below warnings reported by coccicheck:
drivers/hid/hid-hyperv.c:197:2-7: WARNING: NULL check before some freeing functions is not needed.
drivers/hid/hid-hyperv.c:211:2-7: WARNING: NULL check before some freeing functions is not needed.
Signed-off-by: Lucas Tanure <tanure@linux.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Wei Liu <wei.liu@kernel.org>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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|
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
|
|
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
|
|
Commit b30d8cf5e171 ("dt-bindings: opp: Convert Allwinner H6 OPP to a
schema") converted in Documentation/devicetree/bindings/opp/ the file
sun50i-nvmem-cpufreq.txt to allwinner,sun50i-h6-operating-points.yaml.
Since then, ./scripts/get_maintainer.pl --self-test complains:
warning: no file matches \
F: Documentation/devicetree/bindings/opp/sun50i-nvmem-cpufreq.txt
Adjust the file pattern in the ALLWINNER CPUFREQ DRIVER entry.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
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|
Fix trivial copy-n-paste mistake.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20200304140241.340-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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nft will loop forever if the kernel doesn't support an expression:
1. nft_expr_type_get() appends the family specific name to the module list.
2. -EAGAIN is returned to nfnetlink, nfnetlink calls abort path.
3. abort path sets ->done to true and calls request_module for the
expression.
4. nfnetlink replays the batch, we end up in nft_expr_type_get() again.
5. nft_expr_type_get attempts to append family-specific name. This
one already exists on the list, so we continue
6. nft_expr_type_get adds the generic expression name to the module
list. -EAGAIN is returned, nfnetlink calls abort path.
7. abort path encounters the family-specific expression which
has 'done' set, so it gets removed.
8. abort path requests the generic expression name, sets done to true.
9. batch is replayed.
If the expression could not be loaded, then we will end up back at 1),
because the family-specific name got removed and the cycle starts again.
Note that userspace can SIGKILL the nft process to stop the cycle, but
the desired behaviour is to return an error after the generic expr name
fails to load the expression.
Fixes: eb014de4fd418 ("netfilter: nf_tables: autoload modules from the abort path")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|