------------[ cut here ]------------
WARNING: CPU: 0 PID: 5165 at kernel/signal.c:2042 posixtimer_send_sigqueue+0x930/0xbd0 kernel/signal.c:2042
Modules linked in:
CPU: 0 UID: 0 PID: 5165 Comm: syz.2.384 Not tainted 6.12.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:posixtimer_send_sigqueue+0x930/0xbd0 kernel/signal.c:2042
Code: 02 00 00 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 ec f5 36 00 41 be ff ff ff ff e9 21 ff ff ff 90 <0f> 0b 90 42 80 3c 2b 00 74 08 4c 89 e7 e8 4e 55 7f 00 4d 8b 2c 24
RSP: 0018:ffffc90000007c00 EFLAGS: 00010082
RAX: 0000000000000001 RBX: 1ffff1102ed8bbc3 RCX: ffff88817537d700
RDX: 0000000000010000 RSI: 0000000000002000 RDI: 0000000000000000
RBP: ffffc90000007d00 R08: ffffffff8140d3b0 R09: 1ffffffff1ab6e26
R10: dffffc0000000000 R11: fffffbfff1ab6e27 R12: ffff888176c5de18
R13: dffffc0000000000 R14: ffff888176c5de00 R15: ffff888176c5dec0
FS:  00007f023ebd36c0(0000) GS:ffff8881f5800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 000000011545c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 posix_timer_queue_signal kernel/time/posix-timers.c:315 [inline]
 posix_timer_fn+0x100/0x310 kernel/time/posix-timers.c:335
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1755
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1026 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1043
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
 sysvec_apic_timer_interrupt+0x8d/0xb0 arch/x86/kernel/apic/apic.c:1037
 </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 0e 2d 11 fa f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 53 d0 9a f9 65 8b 05 14 c6 54 78 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc90001cf7c60 EFLAGS: 00000206
RAX: bff03dc115e0e500 RBX: 1ffff9200039ef90 RCX: ffffffff936be203
RDX: dffffc0000000000 RSI: ffffffff87e8ec00 RDI: 0000000000000001
RBP: ffffc90001cf7cf0 R08: ffffffff8a5a3f6f R09: 1ffffffff14b47ed
R10: dffffc0000000000 R11: fffffbfff14b47ee R12: dffffc0000000000
R13: 1ffff9200039ef8c R14: ffffc90001cf7c80 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:969
 __do_sys_timer_settime kernel/time/posix-timers.c:989 [inline]
 __se_sys_timer_settime kernel/time/posix-timers.c:975 [inline]
 __x64_sys_timer_settime+0x19e/0x240 kernel/time/posix-timers.c:975
 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: 0033:0x7f023dd85d19
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:00007f023ebd3038 EFLAGS: 00000246 ORIG_RAX: 00000000000000df
RAX: ffffffffffffffda RBX: 00007f023df75fa0 RCX: 00007f023dd85d19
RDX: 0000000020040fe0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f023de01a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f023df75fa0 R15: 00007f023e09fa28
 </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 0e 2d 11 fa       	call   0xfa112d22
  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 d0 9a f9       	call   0xf99ad082 <-- trapping instruction
  2f:	65 8b 05 14 c6 54 78 	mov    %gs:0x7854c614(%rip),%eax        # 0x7854c64a
  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