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[ Upstream commit 473309fb8372365ad211f425bca760af800e10a7 ]
From Documentation/networking/timestamping.txt:
A driver which supports hardware time stamping shall update the
struct with the actual, possibly more permissive configuration.
Do update the struct passed when we upscale the requested time
stamping mode.
Fixes: cb646e2b02b2 ("ptp: Added a clock driver for the National Semiconductor PHYTER.")
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit c28d9a285668c799eeae2f7f93e929a6028a4d6d ]
If ax88172a_unbind() fails, make sure that the return code is
less than zero so that cleanup is done properly and avoid UAF.
Fixes: a9a51bd727d1 ("ax88172a: fix information leak on short answers")
Signed-off-by: George Kennedy <george.kennedy@oracle.com>
Reported-by: syzbot+4cd84f527bf4a10fc9c1@syzkaller.appspotmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 3195c4706b00106aa82c73acd28340fa8fc2bfc1 ]
The size used when calling 'pci_alloc_consistent()' and
'pci_free_consistent()' should match.
Fix it and have it consistent with the corresponding call in 'rr_close()'.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 48cfa61b58a1fee0bc49eef04f8ccf31493b7cdd ]
It is possible to cause a btrfs mount to fail by racing it with a slow
umount. The crux of the sequence is generic_shutdown_super not yet
calling sop->put_super before btrfs_mount_root calls btrfs_open_devices.
If that occurs, btrfs_open_devices will decide the opened counter is
non-zero, increment it, and skip resetting fs_devices->total_rw_bytes to
0. From here, mount will call sget which will result in grab_super
trying to take the super block umount semaphore. That semaphore will be
held by the slow umount, so mount will block. Before up-ing the
semaphore, umount will delete the super block, resulting in mount's sget
reliably allocating a new one, which causes the mount path to dutifully
fill it out, and increment total_rw_bytes a second time, which causes
the mount to fail, as we see double the expected bytes.
Here is the sequence laid out in greater detail:
CPU0 CPU1
down_write sb->s_umount
btrfs_kill_super
kill_anon_super(sb)
generic_shutdown_super(sb);
shrink_dcache_for_umount(sb);
sync_filesystem(sb);
evict_inodes(sb); // SLOW
btrfs_mount_root
btrfs_scan_one_device
fs_devices = device->fs_devices
fs_info->fs_devices = fs_devices
// fs_devices-opened makes this a no-op
btrfs_open_devices(fs_devices, mode, fs_type)
s = sget(fs_type, test, set, flags, fs_info);
find sb in s_instances
grab_super(sb);
down_write(&s->s_umount); // blocks
sop->put_super(sb)
// sb->fs_devices->opened == 2; no-op
spin_lock(&sb_lock);
hlist_del_init(&sb->s_instances);
spin_unlock(&sb_lock);
up_write(&sb->s_umount);
return 0;
retry lookup
don't find sb in s_instances (deleted by CPU0)
s = alloc_super
return s;
btrfs_fill_super(s, fs_devices, data)
open_ctree // fs_devices total_rw_bytes improperly set!
btrfs_read_chunk_tree
read_one_dev // increment total_rw_bytes again!!
super_total_bytes < fs_devices->total_rw_bytes // ERROR!!!
To fix this, we clear total_rw_bytes from within btrfs_read_chunk_tree
before the calls to read_one_dev, while holding the sb umount semaphore
and the uuid mutex.
To reproduce, it is sufficient to dirty a decent number of inodes, then
quickly umount and mount.
for i in $(seq 0 500)
do
dd if=/dev/zero of="/mnt/foo/$i" bs=1M count=1
done
umount /mnt/foo&
mount /mnt/foo
does the trick for me.
CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Boris Burkov <boris@bur.io>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
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[ Upstream commit 68239654acafe6aad5a3c1dc7237e60accfebc03 ]
The sequence
fpu->initialized = 1; /* step A */
preempt_disable(); /* step B */
fpu__restore(fpu);
preempt_enable();
in __fpu__restore_sig() is racy in regard to a context switch.
For 32bit frames, __fpu__restore_sig() prepares the FPU state within
fpu->state. To ensure that a context switch (switch_fpu_prepare() in
particular) does not modify fpu->state it uses fpu__drop() which sets
fpu->initialized to 0.
After fpu->initialized is cleared, the CPU's FPU state is not saved
to fpu->state during a context switch. The new state is loaded via
fpu__restore(). It gets loaded into fpu->state from userland and
ensured it is sane. fpu->initialized is then set to 1 in order to avoid
fpu__initialize() doing anything (overwrite the new state) which is part
of fpu__restore().
A context switch between step A and B above would save CPU's current FPU
registers to fpu->state and overwrite the newly prepared state. This
looks like a tiny race window but the Kernel Test Robot reported this
back in 2016 while we had lazy FPU support. Borislav Petkov made the
link between that report and another patch that has been posted. Since
the removal of the lazy FPU support, this race goes unnoticed because
the warning has been removed.
Disable bottom halves around the restore sequence to avoid the race. BH
need to be disabled because BH is allowed to run (even with preemption
disabled) and might invoke kernel_fpu_begin() by doing IPsec.
[ bp: massage commit message a bit. ]
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: kvm ML <kvm@vger.kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: stable@vger.kernel.org
Cc: x86-ml <x86@kernel.org>
Link: http://lkml.kernel.org/r/20181120102635.ddv3fvavxajjlfqk@linutronix.de
Link: https://lkml.kernel.org/r/20160226074940.GA28911@pd.tnic
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 580c079b5766ac706f56eec5c79aee4bf929fef6 upstream.
At btrfs_find_all_roots_safe() we allocate a ulist and set the **roots
argument to point to it. However if later we fail due to an error returned
by find_parent_nodes(), we free that ulist but leave a dangling pointer in
the **roots argument. Upon receiving the error, a caller of this function
can attempt to free the same ulist again, resulting in an invalid memory
access.
One such scenario is during qgroup accounting:
btrfs_qgroup_account_extents()
--> calls btrfs_find_all_roots() passes &new_roots (a stack allocated
pointer) to btrfs_find_all_roots()
--> btrfs_find_all_roots() just calls btrfs_find_all_roots_safe()
passing &new_roots to it
--> allocates ulist and assigns its address to **roots (which
points to new_roots from btrfs_qgroup_account_extents())
--> find_parent_nodes() returns an error, so we free the ulist
and leave **roots pointing to it after returning
--> btrfs_qgroup_account_extents() sees btrfs_find_all_roots() returned
an error and jumps to the label 'cleanup', which just tries to
free again the same ulist
Stack trace example:
------------[ cut here ]------------
BTRFS: tree first key check failed
WARNING: CPU: 1 PID: 1763215 at fs/btrfs/disk-io.c:422 btrfs_verify_level_key+0xe0/0x180 [btrfs]
Modules linked in: dm_snapshot dm_thin_pool (...)
CPU: 1 PID: 1763215 Comm: fsstress Tainted: G W 5.8.0-rc3-btrfs-next-64 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
RIP: 0010:btrfs_verify_level_key+0xe0/0x180 [btrfs]
Code: 28 5b 5d (...)
RSP: 0018:ffffb89b473779a0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff90397759bf08 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000027 RDI: 00000000ffffffff
RBP: ffff9039a419c000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffb89b43301000 R12: 000000000000005e
R13: ffffb89b47377a2e R14: ffffb89b473779af R15: 0000000000000000
FS: 00007fc47e1e1000(0000) GS:ffff9039ac200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc47e1df000 CR3: 00000003d9e4e001 CR4: 00000000003606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
read_block_for_search+0xf6/0x350 [btrfs]
btrfs_next_old_leaf+0x242/0x650 [btrfs]
resolve_indirect_refs+0x7cf/0x9e0 [btrfs]
find_parent_nodes+0x4ea/0x12c0 [btrfs]
btrfs_find_all_roots_safe+0xbf/0x130 [btrfs]
btrfs_qgroup_account_extents+0x9d/0x390 [btrfs]
btrfs_commit_transaction+0x4f7/0xb20 [btrfs]
btrfs_sync_file+0x3d4/0x4d0 [btrfs]
do_fsync+0x38/0x70
__x64_sys_fdatasync+0x13/0x20
do_syscall_64+0x5c/0xe0
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fc47e2d72e3
Code: Bad RIP value.
RSP: 002b:00007fffa32098c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc47e2d72e3
RDX: 00007fffa3209830 RSI: 00007fffa3209830 RDI: 0000000000000003
RBP: 000000000000072e R08: 0000000000000001 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000003e8
R13: 0000000051eb851f R14: 00007fffa3209970 R15: 00005607c4ac8b50
irq event stamp: 0
hardirqs last enabled at (0): [<0000000000000000>] 0x0
hardirqs last disabled at (0): [<ffffffffb8eb5e85>] copy_process+0x755/0x1eb0
softirqs last enabled at (0): [<ffffffffb8eb5e85>] copy_process+0x755/0x1eb0
softirqs last disabled at (0): [<0000000000000000>] 0x0
---[ end trace 8639237550317b48 ]---
BTRFS error (device sdc): tree first key mismatch detected, bytenr=62324736 parent_transid=94 key expected=(262,108,1351680) has=(259,108,1921024)
general protection fault, probably for non-canonical address 0x6b6b6b6b6b6b6b6b: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC PTI
CPU: 2 PID: 1763215 Comm: fsstress Tainted: G W 5.8.0-rc3-btrfs-next-64 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
RIP: 0010:ulist_release+0x14/0x60 [btrfs]
Code: c7 07 00 (...)
RSP: 0018:ffffb89b47377d60 EFLAGS: 00010282
RAX: 6b6b6b6b6b6b6b6b RBX: ffff903959b56b90 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000270024 RDI: ffff9036e2adc840
RBP: ffff9036e2adc848 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff9036e2adc840
R13: 0000000000000015 R14: ffff9039a419ccf8 R15: ffff90395d605840
FS: 00007fc47e1e1000(0000) GS:ffff9039ac600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8c1c0a51c8 CR3: 00000003d9e4e004 CR4: 00000000003606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ulist_free+0x13/0x20 [btrfs]
btrfs_qgroup_account_extents+0xf3/0x390 [btrfs]
btrfs_commit_transaction+0x4f7/0xb20 [btrfs]
btrfs_sync_file+0x3d4/0x4d0 [btrfs]
do_fsync+0x38/0x70
__x64_sys_fdatasync+0x13/0x20
do_syscall_64+0x5c/0xe0
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fc47e2d72e3
Code: Bad RIP value.
RSP: 002b:00007fffa32098c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004b
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc47e2d72e3
RDX: 00007fffa3209830 RSI: 00007fffa3209830 RDI: 0000000000000003
RBP: 000000000000072e R08: 0000000000000001 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000003e8
R13: 0000000051eb851f R14: 00007fffa3209970 R15: 00005607c4ac8b50
Modules linked in: dm_snapshot dm_thin_pool (...)
---[ end trace 8639237550317b49 ]---
RIP: 0010:ulist_release+0x14/0x60 [btrfs]
Code: c7 07 00 (...)
RSP: 0018:ffffb89b47377d60 EFLAGS: 00010282
RAX: 6b6b6b6b6b6b6b6b RBX: ffff903959b56b90 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000270024 RDI: ffff9036e2adc840
RBP: ffff9036e2adc848 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff9036e2adc840
R13: 0000000000000015 R14: ffff9039a419ccf8 R15: ffff90395d605840
FS: 00007fc47e1e1000(0000) GS:ffff9039ad200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6a776f7d40 CR3: 00000003d9e4e002 CR4: 00000000003606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Fix this by making btrfs_find_all_roots_safe() set *roots to NULL after
it frees the ulist.
Fixes: 8da6d5815c592b ("Btrfs: added btrfs_find_all_roots()")
CC: stable@vger.kernel.org # 4.4+
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 5cacc6f5764e94fa753b2c1f5f7f1f3f74286e82 upstream.
The RT5670_PWR_ANLG1 register has 3 bits to select the LDO voltage,
so the correct mask is 0x7 not 0x3.
Because of this wrong mask we were programming the ldo bits
to a setting of binary 001 (0x05 & 0x03) instead of binary 101
when moving to SND_SOC_BIAS_PREPARE.
According to the datasheet 001 is a reserved value, so no idea
what it did, since the driver was working fine before I guess we
got lucky and it does something which is ok.
Fixes: 5e8351de740d ("ASoC: add RT5670 CODEC driver")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200628155231.71089-3-hdegoede@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 60379ba08532eca861e933b389526a4dc89e0c42 upstream.
snd_info_get_line() has a sanity check of NULL buffer -- both buffer
itself being NULL and buffer->buffer being NULL. Basically both
checks are valid and necessary, but the problem is that it's with
snd_BUG_ON() macro that triggers WARN_ON(). The latter condition
(NULL buffer->buffer) can be met arbitrarily by user since the buffer
is allocated at the first write, so it means that user can trigger
WARN_ON() at will.
This patch addresses it by simply moving buffer->buffer NULL check out
of snd_BUG_ON() so that spurious WARNING is no longer triggered.
Reported-by: syzbot+e42d0746c3c3699b6061@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200717084023.5928-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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GDB regression
commit fe5ed7ab99c656bd2f5b79b49df0e9ebf2cead8a upstream.
If a tracee is uprobed and it hits int3 inserted by debugger, handle_swbp()
does send_sig(SIGTRAP, current, 0) which means si_code == SI_USER. This used
to work when this code was written, but then GDB started to validate si_code
and now it simply can't use breakpoints if the tracee has an active uprobe:
# cat test.c
void unused_func(void)
{
}
int main(void)
{
return 0;
}
# gcc -g test.c -o test
# perf probe -x ./test -a unused_func
# perf record -e probe_test:unused_func gdb ./test -ex run
GNU gdb (GDB) 10.0.50.20200714-git
...
Program received signal SIGTRAP, Trace/breakpoint trap.
0x00007ffff7ddf909 in dl_main () from /lib64/ld-linux-x86-64.so.2
(gdb)
The tracee hits the internal breakpoint inserted by GDB to monitor shared
library events but GDB misinterprets this SIGTRAP and reports a signal.
Change handle_swbp() to use force_sig(SIGTRAP), this matches do_int3_user()
and fixes the problem.
This is the minimal fix for -stable, arch/x86/kernel/uprobes.c is equally
wrong; it should use send_sigtrap(TRAP_TRACE) instead of send_sig(SIGTRAP),
but this doesn't confuse GDB and needs another x86-specific patch.
Reported-by: Aaron Merey <amerey@redhat.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20200723154420.GA32043@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
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commit 2aeb1883547626d82c597cce2c99f0b9c62e2425 upstream.
We're missing ctx lock when iterating children siblings
within the perf_read path for group reading. Following
race and crash can happen:
User space doing read syscall on event group leader:
T1:
perf_read
lock event->ctx->mutex
perf_read_group
lock leader->child_mutex
__perf_read_group_add(child)
list_for_each_entry(sub, &leader->sibling_list, group_entry)
----> sub might be invalid at this point, because it could
get removed via perf_event_exit_task_context in T2
Child exiting and cleaning up its events:
T2:
perf_event_exit_task_context
lock ctx->mutex
list_for_each_entry_safe(child_event, next, &child_ctx->event_list,...
perf_event_exit_event(child)
lock ctx->lock
perf_group_detach(child)
unlock ctx->lock
----> child is removed from sibling_list without any sync
with T1 path above
...
free_event(child)
Before the child is removed from the leader's child_list,
(and thus is omitted from perf_read_group processing), we
need to ensure that perf_read_group touches child's
siblings under its ctx->lock.
Peter further notes:
| One additional note; this bug got exposed by commit:
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| ba5213ae6b88 ("perf/core: Correct event creation with PERF_FORMAT_GROUP")
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| which made it possible to actually trigger this code-path.
Tested-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: ba5213ae6b88 ("perf/core: Correct event creation with PERF_FORMAT_GROUP")
Link: http://lkml.kernel.org/r/20170720141455.2106-1-jolsa@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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compeletion")
commit 65caafd0d2145d1dd02072c4ced540624daeab40 upstream.
Reverting commit d03727b248d0 "NFSv4 fix CLOSE not waiting for
direct IO compeletion". This patch made it so that fput() by calling
inode_dio_done() in nfs_file_release() would wait uninterruptably
for any outstanding directIO to the file (but that wait on IO should
be killable).
The problem the patch was also trying to address was REMOVE returning
ERR_ACCESS because the file is still opened, is supposed to be resolved
by server returning ERR_FILE_OPEN and not ERR_ACCESS.
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 0156e76d388310a490aeb0f2fbb5b284ded3aecc ]
Tegra TRM says worst-case reply time is 1216us, and this should fix some
spurious timeouts that have been popping up.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 28b18e4eb515af7c6661c3995c6e3c34412c2874 ]
clang static analysis flags this garbage return
drivers/net/ethernet/marvell/sky2.c:208:2: warning: Undefined or garbage value returned to caller [core.uninitialized.UndefReturn]
return v;
^~~~~~~~
static inline u16 gm_phy_read( ...
{
u16 v;
__gm_phy_read(hw, port, reg, &v);
return v;
}
__gm_phy_read can return without setting v.
So handle similar to skge.c's gm_phy_read, initialize v.
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 9dc829a135fb5927f1519de11286e2bbb79f5b66 ]
When this driver transmits data,
first this driver will remove a pseudo header of 1 byte,
then the lapb module will prepend the LAPB header of 2 or 3 bytes,
then this driver will prepend a length field of 2 bytes,
then the underlying Ethernet device will prepend its own header.
So, the header length required should be:
-1 + 3 + 2 + "the header length needed by the underlying device".
This patch fixes kernel panic when this driver is used with AF_PACKET
SOCK_DGRAM sockets.
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 0d5ab144429e8bd80889b856a44d56ab4a5cd59b ]
Increment *pos in the cpuinfo_op.next to fix the following warning
triggered by cat /proc/cpuinfo:
seq_file: buggy .next function c_next did not update position index
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 73f9941306d5ce030f3ffc7db425c7b2a798cf8e ]
Building xtensa kernel with gcc-10 produces the following warnings:
arch/xtensa/kernel/xtensa_ksyms.c:90:15: warning: conflicting types
for built-in function ‘__sync_fetch_and_and_4’;
expected ‘unsigned int(volatile void *, unsigned int)’
[-Wbuiltin-declaration-mismatch]
arch/xtensa/kernel/xtensa_ksyms.c:96:15: warning: conflicting types
for built-in function ‘__sync_fetch_and_or_4’;
expected ‘unsigned int(volatile void *, unsigned int)’
[-Wbuiltin-declaration-mismatch]
Fix declarations of these functions to avoid the warning.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 5aee52c44d9170591df65fafa1cd408acc1225ce ]
clang static analysis flags several null function pointer problems.
drivers/scsi/scsi_transport_spi.c:374:1: warning: Called function pointer is null (null dereference) [core.CallAndMessage]
spi_transport_max_attr(offset, "%d\n");
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Reviewing the store_spi_store_max macro
if (i->f->set_##field)
return -EINVAL;
should be
if (!i->f->set_##field)
return -EINVAL;
Link: https://lore.kernel.org/r/20200627133242.21618-1-trix@redhat.com
Reviewed-by: James Bottomley <jejb@linux.ibm.com>
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 0b467b63870d9c05c81456aa9bfee894ab2db3b6 ]
Without this patch, eapol frames cannot be received in mesh
mode, when 802.1X should be used. Initially only a MGTK is
defined, which is found and set as rx->key, when there are
no other keys set. ieee80211_drop_unencrypted would then
drop these eapol frames, as they are data frames without
encryption and there exists some rx->key.
Fix this by differentiating between mesh eapol frames and
other data frames with existing rx->key. Allow mesh mesh
eapol frames only if they are for our vif address.
With this patch in-place, ieee80211_rx_h_mesh_fwding continues
after the ieee80211_drop_unencrypted check and notices, that
these eapol frames have to be delivered locally, as they should.
Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
Link: https://lore.kernel.org/r/20200625104214.50319-1-markus.theil@tu-ilmenau.de
[small code cleanups]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 69339d083dfb7786b0e0b3fc19eaddcf11fabdfb ]
uart0_pins is defined as:
static const unsigned uart0_pins[] = {135, 136, 137, 138, 139};
which npins is wronly specified as 9 later
{
.name = "uart0",
.pins = uart0_pins,
.npins = 9,
},
npins should be 5 instead of 9 according to the definition.
Signed-off-by: Jacky Hu <hengqing.hu@gmail.com>
Link: https://lore.kernel.org/r/20200616015024.287683-1-hengqing.hu@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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This reverts commit f889e67f3704313e5e5ae636fe9ef9845b73d22d.
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https://source.codeaurora.org/quic/la/kernel/msm-4.4 into lineage-17.1-caf-msm8998
* tag 'LA.UM.8.4.r1-05900-8x98.0' of https://source.codeaurora.org/quic/la/kernel/msm-4.4:
msm: kgsl: Mark the scratch buffer as privileged
power: qcom: Add the QPNP QGAUGE (QG) headers
msm: ipa: update msm_ipa.h with latest IPA versions constants
nl80211: add NL80211_CMD_UPDATE_FT_IES to supported commands
msm: mdss: hdmi: proper error logging
ASoC: Fix warnings and errors with llvm
sdm660_cdc: Reset cache_only mode for non SSR scenario
include: Fix for compilation issue
Makefile: Suppress few warnings with clang
kbuild: Add -Werror=unknown-warning-option to CLANG_FLAGS
kbuild: initialize CLANG_FLAGS correctly in the top Makefile
kbuild: consolidate Clang compiler flags
kbuild: add -no-integrated-as Clang option unconditionally
power: qpnp-fg-gen3: Fix warning with llvm
lkdtm: Fix warning with llvm
AndroidKernel: Explicitly mark certain targets as phony
dsp: q6asm: Change to increase asm sessions allowed
dsp: q6adm: Channel map configuration for multi-channel
defconfig: Create symbolic link for arm64 defconfigs
scripts/build-all: remove pattern-based defconfig detection
scripts/build-all: look for nested vendor/ defconfig directories
scripts/build-all: remove all defconfig manipulation options
scripts: build-all.py: update regex to compile all defconfigs
scripts: build-all.py: append llvm to the config file
scripts: Clean up the gcc-wrapper white list
scripts: set clang as REAL_CC to support LLVM by default
defconfig: auto: remove auto defconfigs
vgacon: Fix a UAF in vgacon_invert_region
soc: qcom: Reset string table index for each dump collection request
msm: adsprpc: Fix array index underflow problem
ath10k: remove unnecessary code
drm/msm/dsi: use correct enum in dsi_get_cmd_fmt
btrfs: Remove extra parentheses from condition in copy_items()
do_last(): fetch directory ->i_mode and ->i_uid before it's too late
Conflicts:
fs/namei.c
scripts/gcc-wrapper.py
Change-Id: Icfb78abcc0f2cf980b5c0ceaf40f108038b1b527
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Mark the scratch buffer as privileged so that it can only be accessed by
GPU through the ringbuffer. To accomplish this, we need to:
1. Disable the shadow rptr feature.
2. Trigger RPTR update from GPU using a WHERE_AM_I packet.
3. Add support for the new ucode.
Change-Id: I9b388f55f53b69028b9bbb2306cb43fd1297c52f
Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
Signed-off-by: Archana Sriram <apsrir@codeaurora.org>
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Change-Id: Ie77691d2a639aab60b95b61ad928ecfcc516a958
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The QG headers support for battery gauging and reporting
the battery specific parameters to userspace.
This is a snapshot of header files as of msm-4.9
'commit 8f7046d0c282 (" Merge msm: ep_pcie: Disable
clkreq interrupt and release wakelock in D3 cold")'.
Change-Id: I3288e71af24bf9c3a0d814014c4f653285622f14
Signed-off-by: Kishor Krishna Bhat <kishkris@codeaurora.org>
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fix for compilation issue on LA.UM.9.2 sdm660_64
target.
Change-Id: I2ea85374e981a3dd26bcdd622ab163b322750398
Signed-off-by: Shashi Kant Maurya <smaury@codeaurora.org>
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This is needed so common components between kernel
4.9 and kernel 4.14 can compile OK.
CRs-Fixed: 2295428
Change-Id: I36b28c0f9ee4a4aca1303d298e88b98cceac36e3
Signed-off-by: Ghanim Fodi <gfodi@codeaurora.org>
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Enable -Wno-misleading-indentation -Wno-bool-operation options
to suppress these warnings on clang compilation.
Change-Id: I018b992d126d710cd3548a87287dc5c681cfe400
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Add NL80211_CMD_UPDATE_FT_IES to supported commands.
In mac80211 drivers, this can be implemented via existing
NL80211_CMD_AUTHENTICATE and NL80211_ATTR_IE, but non-mac80211
drivers have a separate command for this. A driver supports FT
if it either is mac80211 or supports this command.
Signed-off-by: Matthew Wang <matthewmwang@chromium.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Link: https://lore.kernel.org/r/20190822174806.2954-1-matthewmwang@chromium.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Git-commit: 7010998c6caf7cf9706f31c1880b7aeac904e874
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git
Change-Id: Ibb33f0e7d0ea765b1aa5534e8416e4e5e04dd0ed
CRs-Fixed: 2626218
Signed-off-by: Vinita S. Maloo <vmaloo@codeaurora.org>
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In commit ebcc5928c5d9 ("arm64: Silence gcc warnings about arch ABI
drift"), the arm64 Makefile added -Wno-psabi to KBUILD_CFLAGS, which is
a GCC only option so clang rightfully complains:
warning: unknown warning option '-Wno-psabi' [-Wunknown-warning-option]
https://clang.llvm.org/docs/DiagnosticsReference.html#wunknown-warning-option
However, by default, this is merely a warning so the build happily goes
on with a slew of these warnings in the process.
Commit c3f0d0bc5b01 ("kbuild, LLVMLinux: Add -Werror to cc-option to
support clang") worked around this behavior in cc-option by adding
-Werror so that unknown flags cause an error. However, this all happens
silently and when an unknown flag is added to the build unconditionally
like -Wno-psabi, cc-option will always fail because there is always an
unknown flag in the list of flags. This manifested as link time failures
in the arm64 libstub because -fno-stack-protector didn't get added to
KBUILD_CFLAGS.
To avoid these weird cryptic failures in the future, make clang behave
like gcc and immediately error when it encounters an unknown flag by
adding -Werror=unknown-warning-option to CLANG_FLAGS. This can be added
unconditionally for clang because it is supported by at least 3.0.0,
according to godbolt [1] and 4.0.0, according to its documentation [2],
which is far earlier than we typically support.
[1]: https://godbolt.org/z/7F7rm3
[2]: https://releases.llvm.org/4.0.0/tools/clang/docs/DiagnosticsReference.html#wunknown-warning-option
Link: https://github.com/ClangBuiltLinux/linux/issues/511
Link: https://github.com/ClangBuiltLinux/linux/issues/517.
Change-Id: I3f6fab18c0fdfbe07f1585c5494ece88d6f83348
Suggested-by: Peter Smith <peter.smith@linaro.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Git-Commit: 589834b3a0097a4908f4112eac0ca2feb486fa32
Git-Repo: https://android.googlesource.com/kernel/common
[schikk: Resolved trivial merge conflicts]
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
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commit 5241ab4cf42d3a93b933b55d3d53f43049081fa1 upstream.
CLANG_FLAGS is initialized by the following line:
CLANG_FLAGS := --target=$(notdir $(CROSS_COMPILE:%-=%))
..., which is run only when CROSS_COMPILE is set.
Some build targets (bindeb-pkg etc.) recurse to the top Makefile.
When you build the kernel with Clang but without CROSS_COMPILE,
the same compiler flags such as -no-integrated-as are accumulated
into CLANG_FLAGS.
If you run 'make CC=clang' and then 'make CC=clang bindeb-pkg',
Kbuild will recompile everything needlessly due to the build command
change.
Fix this by correctly initializing CLANG_FLAGS.
Change-Id: I830082d62dc6ff42f41e16fa42920c65a2291ce8
Fixes: 238bcbc4e07f ("kbuild: consolidate Clang compiler flags")
Cc: <stable@vger.kernel.org> # v5.0+
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Git-Commit: 3e1332cfb41ccb47134d20e08ce999474d4e1f38
Git-Repo: https://android.googlesource.com/kernel/common
[schikk: Resolved trivial merge conflicts]
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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commit 238bcbc4e07fad2fff99c5b157d0c37ccd4d093c upstream.
Collect basic Clang options such as --target, --prefix, --gcc-toolchain,
-no-integrated-as into a single variable CLANG_FLAGS so that it can be
easily reused in other parts of Makefile.
Change-Id: I60289506aa4b04e31e5f10e4de0a620d489d67b2
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Git-Commit: 8ff3c2ecc1a4b79d6ee2b0e705784e2619ccaf7d
Git-Repo: https://android.googlesource.com/kernel/common
[schikk: Resolved trivial merge conflicts]
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
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commit dbe27a002ef8573168cb64e181458ea23a74e2b6 upstream.
We are still a way off the Clang's integrated assembler support for
the kernel. Hence, -no-integrated-as is mandatory to build the kernel
with Clang. If you had an ancient version of Clang that does not
recognize this option, you would not be able to compile the kernel
anyway.
Change-Id: Ib2bb2b5beb295e5b7aa0c25ccd06fe0be8b30b87
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Git-Commit: c95a870d1cdeda811c9ba4a16c16c4d1e2baa701
Git-Repo: https://android.googlesource.com/kernel/common
[schikk: Resolved trivial merge conflicts]
Signed-off-by: Swetha Chikkaboraiah <schikk@codeaurora.org>
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- asm session failure with ten asm sessions open
- support by allowing ten asm sessions.
Change-Id: Id54e254c23841aff623e61ef82a8417ae138b25b
Signed-off-by: Gangadhar S <gangadha@codeaurora.org>
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Sometimes during bootup there is afe clk enable failure
and hence regmap cache mode is set as per current design.
Since clk enable request is success next time and there
is no SSR/PDR happening, reset the cache_only mode
to avoid audio failure which is happening
due to enable of regmap cache access.
Change-Id: Iea7f9b04747f3a5117e39d6e0a34b42477f2914a
Signed-off-by: Soumya Managoli <smanag@codeaurora.org>
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Multiple Errors are logged with a single generic pr_err message.
Split them into individual errors with proper error message.
Change-Id: I0e1758c9346bf7bdb59bdd2b5e9fed43f0cb888c
Signed-off-by: Narender Ankam <nankam@codeaurora.org>
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Fix snprintf size large argument error
when llvm is enabled.
Change-Id: Icb9fa015e5d925e6c0b6aad379e422384a6fad13
Signed-off-by: Kishor Krishna Bhat <kishkris@codeaurora.org>
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Fix Wsizeof-array-div, type cast error when llvm is enabled.
Change-Id: Ia01af9b84161ae4cad978d4b652b9e21107d9bbb
Signed-off-by: Kishor Krishna Bhat <kishkris@codeaurora.org>
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Fix destination buffer overflow warning
message when llvm is enabled.
Change-Id: I1c1a28f63c8b63772caeea815d3cfbd2b8ae5e8f
Signed-off-by: Kishor Krishna Bhat <kishkris@codeaurora.org>
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