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WARNING: CPU: 1 PID: 5948 at kernel/signal.c:2050 posixtimer_send_sigqueue+0xba8/0x1020 kernel/signal.c:2050
Modules linked in:
CPU: 1 UID: 0 PID: 5948 Comm: kworker/1:3 Not tainted 6.13.0-rc3-syzkaller-00193-ge9b8ffafd20a #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events p9_write_work
RIP: 0010:posixtimer_send_sigqueue+0xba8/0x1020 kernel/signal.c:2050
Code: ff ff 4c 89 e7 e8 c8 43 9d 00 e9 7e f8 ff ff 41 bf 02 00 00 00 e9 87 f8 ff ff 48 89 54 24 10 48 89 44 24 08 e8 49 d8 3a 00 90 <0f> 0b 90 48 8d 7b 10 48 8b 44 24 08 48 b9 00 00 00 00 00 fc ff df
RSP: 0018:ffffc900005a0d50 EFLAGS: 00010046
RAX: 0000000080010003 RBX: ffff88806bc14000 RCX: 1ffff1100d782803
RDX: ffff888023750000 RSI: ffffffff815e76a7 RDI: 0000000000000001
RBP: ffff888023334880 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000007 R12: ffff88806bc140a4
R13: 1ffff920000b41af R14: ffff88806bc140d8 R15: ffff88806bc140c0
FS: 0000000000000000(0000) GS:ffff88802b500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020004380 CR3: 000000006bc12000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
posix_timer_fn+0x31/0x60 kernel/time/posix-timers.c:323
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1803
hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire.part.0+0x155/0x380 kernel/locking/lockdep.c:5814
Code: b8 ff ff ff ff 65 0f c1 05 20 34 8c 7e 83 f8 01 0f 85 d0 01 00 00 9c 58 f6 c4 02 0f 85 e5 01 00 00 48 85 ed 0f 85 b6 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7
RSP: 0018:ffffc90003f5f7a0 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 1ffff920007ebef5 RCX: 0000000000000001
RDX: 0000000000000001 RSI: ffffffff8b4cd480 RDI: ffffffff8bb16ec0
RBP: 0000000000000200 R08: 000000000014e198 R09: fffffbfff2d69fb9
R10: ffffffff96b4fdcf R11: 0000000000000b8f R12: 0000000000000000
R13: ffffffff8da15810 R14: 0000000000000000 R15: 0000000000000000
mnt_get_write_access+0x74/0x300 fs/namespace.c:466
mnt_get_write_access_file fs/namespace.c:543 [inline]
mnt_get_write_access_file+0x134/0x180 fs/namespace.c:532
__file_update_time fs/inode.c:2352 [inline]
file_update_time+0xd6/0x1c0 fs/inode.c:2383
pipe_write+0x1236/0x1b30 fs/pipe.c:607
__kernel_write_iter+0x318/0xa80 fs/read_write.c:612
__kernel_write fs/read_write.c:632 [inline]
kernel_write fs/read_write.c:653 [inline]
kernel_write+0x1f6/0x6c0 fs/read_write.c:643
p9_fd_write net/9p/trans_fd.c:432 [inline]
p9_write_work+0x244/0xbf0 net/9p/trans_fd.c:483
process_one_work+0x958/0x1b30 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
----------------
Code disassembly (best guess):
0: b8 ff ff ff ff mov $0xffffffff,%eax
5: 65 0f c1 05 20 34 8c xadd %eax,%gs:0x7e8c3420(%rip) # 0x7e8c342d
c: 7e
d: 83 f8 01 cmp $0x1,%eax
10: 0f 85 d0 01 00 00 jne 0x1e6
16: 9c pushf
17: 58 pop %rax
18: f6 c4 02 test $0x2,%ah
1b: 0f 85 e5 01 00 00 jne 0x206
21: 48 85 ed test %rbp,%rbp
24: 0f 85 b6 01 00 00 jne 0x1e0
* 2a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction
31: fc ff df
34: 48 01 c3 add %rax,%rbx
37: 48 c7 03 00 00 00 00 movq $0x0,(%rbx)
3e: 48 rex.W
3f: c7 .byte 0xc7