------------[ cut here ]------------
WARNING: CPU: 0 PID: 11346 at kernel/signal.c:2050 posixtimer_send_sigqueue+0xba8/0x1020 kernel/signal.c:2050
Modules linked in:
CPU: 0 UID: 0 PID: 11346 Comm: syz.2.1235 Not tainted 6.13.0-rc3-syzkaller-00062-gc061cf420ded #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 a8 42 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:ffffc9002550fbc8 EFLAGS: 00010087
RAX: 0000000000000087 RBX: ffff8880717a25a0 RCX: ffffc9000c402000
RDX: 0000000000080000 RSI: ffffffff815e76a7 RDI: 0000000000000001
RBP: ffff8880221fc880 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000003 R12: ffff8880717a2644
R13: 1ffff92004aa1f7e R14: ffff8880717a2678 R15: ffff8880717a2660
FS:  0000000000000000(0000) GS:ffff88802b400000(0063) knlGS:00000000f50b0b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020044000 CR3: 0000000062ecc000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 cpu_timer_fire kernel/time/posix-cpu-timers.c:607 [inline]
 posix_cpu_timer_set+0x9e1/0xd30 kernel/time/posix-cpu-timers.c:735
 do_timer_settime+0x26c/0x400 kernel/time/posix-timers.c:899
 __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: 0023:0xf70be579
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:00000000f50b055c EFLAGS: 00000296 ORIG_RAX: 0000000000000104
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000020000340 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi