------------[ cut here ]------------
WARNING: CPU: 3 PID: 7777 at kernel/signal.c:2050 posixtimer_send_sigqueue+0xba8/0x1020 kernel/signal.c:2050
Modules linked in:
CPU: 3 UID: 0 PID: 7777 Comm: syz.2.553 Not tainted 6.13.0-rc7-syzkaller-00102-gce69b4019001 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:posixtimer_send_sigqueue+0xba8/0x1020 kernel/signal.c:2050
Code: ff ff 4c 89 e7 e8 98 fd 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 c9 50 3b 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:ffffc90000708d50 EFLAGS: 00010046
RAX: 0000000080010003 RBX: ffff8880540543c0 RCX: 1ffff1100a80a87b
RDX: ffff888029b80000 RSI: ffffffff815ed3d7 RDI: 0000000000000001
RBP: ffff888029b80000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 00000000000000d9 R12: ffff888054054464
R13: 1ffff920000e11af R14: ffff888054054498 R15: ffff888054054480
FS:  00007fc219c386c0(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020044000 CR3: 000000002578e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 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
 </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+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 76 32 4a f6 48 89 df e8 ce b1 4a f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 <bf> 01 00 00 00 e8 c5 96 3b f6 65 8b 05 86 40 d7 74 85 c0 74 16 5b
RSP: 0018:ffffc900045bfd58 EFLAGS: 00000246
RAX: 0000000000000006 RBX: ffff8880540543f0 RCX: 1ffffffff20be0c9
RDX: 0000000000000000 RSI: ffffffff8b6cd9e0 RDI: ffffffff8bd1ef20
RBP: 0000000000000283 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff905f4997 R11: 0000000000000002 R12: ffffc900045bfe50
R13: 0000000000000000 R14: 1ffff920008b7fb1 R15: dffffc0000000000
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 unlock_timer kernel/time/posix-timers.c:128 [inline]
 do_timer_settime+0x315/0x400 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+0x1c3/0x2c0 kernel/time/posix-timers.c:914
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc218d85d29
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:00007fc219c38038 EFLAGS: 00000246 ORIG_RAX: 00000000000000df
RAX: ffffffffffffffda RBX: 00007fc218f75fa0 RCX: 00007fc218d85d29
RDX: 0000000020000080 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 00007fc218e01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc218f75fa0 R15: 00007ffca5f55708
 </TASK>
----------------
Code disassembly (best guess):
   0:	f5                   	cmc
   1:	53                   	push   %rbx
   2:	48 8b 74 24 10       	mov    0x10(%rsp),%rsi
   7:	48 89 fb             	mov    %rdi,%rbx
   a:	48 83 c7 18          	add    $0x18,%rdi
   e:	e8 76 32 4a f6       	call   0xf64a3289
  13:	48 89 df             	mov    %rbx,%rdi
  16:	e8 ce b1 4a f6       	call   0xf64ab1e9
  1b:	f7 c5 00 02 00 00    	test   $0x200,%ebp
  21:	75 23                	jne    0x46
  23:	9c                   	pushf
  24:	58                   	pop    %rax
  25:	f6 c4 02             	test   $0x2,%ah
  28:	75 37                	jne    0x61
* 2a:	bf 01 00 00 00       	mov    $0x1,%edi <-- trapping instruction
  2f:	e8 c5 96 3b f6       	call   0xf63b96f9
  34:	65 8b 05 86 40 d7 74 	mov    %gs:0x74d74086(%rip),%eax        # 0x74d740c1
  3b:	85 c0                	test   %eax,%eax
  3d:	74 16                	je     0x55
  3f:	5b                   	pop    %rbx