------------[ cut here ]------------
WARNING: CPU: 1 PID: 17274 at kernel/signal.c:2050 posixtimer_send_sigqueue+0xa08/0xce0 kernel/signal.c:2050
Modules linked in:
CPU: 1 UID: 0 PID: 17274 Comm: syz.9.2090 Not tainted 6.13.0-rc3-syzkaller-00017-gf44d154d6e3d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:posixtimer_send_sigqueue+0xa08/0xce0 kernel/signal.c:2050
Code: 00 0f 85 f4 02 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 23 20 3b 00 4c 8b 64 24 08 e9 28 ff ff ff 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 80 3c 03 00 74 08 4c 89 f7
RSP: 0018:ffffc90000a18c00 EFLAGS: 00010086
RAX: dffffc0000000000 RBX: 1ffff110025a19e3 RCX: ffff888027fb3c00
RDX: 0000000000010000 RSI: 0000000000020000 RDI: 0000000000000000
RBP: ffffc90000a18cf8 R08: ffffffff816460d0 R09: 1ffff11006285140
R10: dffffc0000000000 R11: ffffed1006285141 R12: ffff888012d0cf00
R13: 1ffff110025a19f0 R14: ffff888012d0cf18 R15: ffff888012d0cfc0
FS:  00007f7d7ffea6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7d7ffc8f98 CR3: 0000000048ffc000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 posix_timer_queue_signal kernel/time/posix-timers.c:308 [inline]
 posix_timer_fn+0xe2/0x160 kernel/time/posix-timers.c:323
 __run_hrtimer kernel/time/hrtimer.c:1739 [inline]
 __hrtimer_run_queues+0x59b/0xd30 kernel/time/hrtimer.c:1803
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 ae b1 3a f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 53 57 a2 f5 65 8b 05 f4 aa 38 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc9000c587c60 EFLAGS: 00000206
RAX: 5e19d46074a6dd00 RBX: 1ffff920018b0f90 RCX: ffffffff9a3a8903
RDX: dffffc0000000000 RSI: ffffffff8c0a9760 RDI: 0000000000000001
RBP: ffffc9000c587cf0 R08: ffffffff901979b7 R09: 1ffffffff2032f36
R10: dffffc0000000000 R11: fffffbfff2032f37 R12: dffffc0000000000
R13: 1ffff920018b0f8c R14: ffffc9000c587c80 R15: 0000000000000246
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 unlock_timer kernel/time/posix-timers.c:128 [inline]
 do_timer_settime+0x37f/0x3e0 kernel/time/posix-timers.c:908
 __do_sys_timer_settime kernel/time/posix-timers.c:928 [inline]
 __se_sys_timer_settime kernel/time/posix-timers.c:914 [inline]
 __x64_sys_timer_settime+0x19e/0x240 kernel/time/posix-timers.c:914
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7d7f185d19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7d7ffea038 EFLAGS: 00000246 ORIG_RAX: 00000000000000df
RAX: ffffffffffffffda RBX: 00007f7d7f376080 RCX: 00007f7d7f185d19
RDX: 0000000020040fe0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f7d7f201a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7d7f376080 R15: 00007f7d7f49fa28
 </TASK>
----------------
Code disassembly (best guess):
   0:	9c                   	pushf
   1:	8f 44 24 20          	pop    0x20(%rsp)
   5:	42 80 3c 23 00       	cmpb   $0x0,(%rbx,%r12,1)
   a:	74 08                	je     0x14
   c:	4c 89 f7             	mov    %r14,%rdi
   f:	e8 ae b1 3a f6       	call   0xf63ab1c2
  14:	f6 44 24 21 02       	testb  $0x2,0x21(%rsp)
  19:	75 52                	jne    0x6d
  1b:	41 f7 c7 00 02 00 00 	test   $0x200,%r15d
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 53 57 a2 f5       	call   0xf5a25782 <-- trapping instruction
  2f:	65 8b 05 f4 aa 38 74 	mov    %gs:0x7438aaf4(%rip),%eax        # 0x7438ab2a
  36:	85 c0                	test   %eax,%eax
  38:	74 43                	je     0x7d
  3a:	48                   	rex.W
  3b:	c7                   	.byte 0xc7
  3c:	04 24                	add    $0x24,%al
  3e:	0e                   	(bad)
  3f:	36                   	ss