------------[ cut here ]------------
WARNING: CPU: 2 PID: 8623 at kernel/signal.c:2050 posixtimer_send_sigqueue+0xba8/0x1020 kernel/signal.c:2050
Modules linked in:
CPU: 2 UID: 0 PID: 8623 Comm: syz.0.678 Not tainted 6.13.0-rc3-syzkaller-00026-g59dbb9d81adf #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 4b 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:ffffc90000548d50 EFLAGS: 00010046
RAX: 0000000080010003 RBX: ffff88804c00f680 RCX: 1ffff11009801ed3
RDX: ffff888022552440 RSI: ffffffff815e76a7 RDI: 0000000000000001
RBP: ffff888022552440 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000002 R12: ffff88804c00f724
R13: 1ffff920000a91af R14: ffff88804c00f758 R15: ffff88804c00f740
FS:  0000000000000000(0000) GS:ffff88802b600000(0063) knlGS:00000000f5060b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020044000 CR3: 000000006aa78000 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 86 b1 59 f6 48 89 df e8 be 30 5a f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 <bf> 01 00 00 00 e8 e5 20 4b f6 65 8b 05 b6 44 e7 74 85 c0 74 16 5b
RSP: 0018:ffffc9000441fd48 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffff88804c00f6b0 RCX: 1ffffffff2039371
RDX: 0000000000000000 RSI: ffffffff8b4cd180 RDI: ffffffff8bb16c40
RBP: 0000000000000293 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff901cddd7 R11: 0000000000000002 R12: ffffc9000441fe40
R13: 0000000000000000 R14: 1ffff92000883faf R15: dffffc0000000000
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 unlock_timer kernel/time/posix-timers.c:128 [inline]
 do_timer_settime+0x31d/0x400 kernel/time/posix-timers.c:908
 __do_sys_timer_settime32 kernel/time/posix-timers.c:950 [inline]
 __se_sys_timer_settime32 kernel/time/posix-timers.c:937 [inline]
 __ia32_sys_timer_settime32+0x1d4/0x2c0 kernel/time/posix-timers.c:937
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf706e579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f506055c EFLAGS: 00000296 ORIG_RAX: 0000000000000104
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000006e4642df
RDX: 0000000020000300 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </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 86 b1 59 f6       	call   0xf659b199
  13:	48 89 df             	mov    %rbx,%rdi
  16:	e8 be 30 5a f6       	call   0xf65a30d9
  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 e5 20 4b f6       	call   0xf64b2119
  34:	65 8b 05 b6 44 e7 74 	mov    %gs:0x74e744b6(%rip),%eax        # 0x74e744f1
  3b:	85 c0                	test   %eax,%eax
  3d:	74 16                	je     0x55
  3f:	5b                   	pop    %rbx