------------[ cut here ]------------ WARNING: CPU: 0 PID: 8404 at kernel/signal.c:2050 posixtimer_send_sigqueue+0xa08/0xce0 kernel/signal.c:2050 Modules linked in: CPU: 0 UID: 0 PID: 8404 Comm: syz.5.555 Not tainted 6.13.0-rc2-syzkaller-00159-gf932fb9b4074 #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 73 1a 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:ffffc90002e57a80 EFLAGS: 00010082 RAX: dffffc0000000000 RBX: 1ffff1100f0324b7 RCX: ffff88806c970000 RDX: 0000000000000000 RSI: 0000000000002000 RDI: 0000000000000000 RBP: ffffc90002e57b70 R08: ffffffff816450d0 R09: 1ffffffff2853f12 R10: dffffc0000000000 R11: fffffbfff2853f13 R12: ffff8880781925a0 R13: 1ffff1100f0324c4 R14: ffff8880781925b8 R15: ffff888078192660 FS: 00007ff81f8956c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020044000 CR3: 0000000078bf0000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: cpu_timer_fire kernel/time/posix-cpu-timers.c:607 [inline] posix_cpu_timer_set+0xa25/0xe80 kernel/time/posix-cpu-timers.c:735 do_timer_settime+0x2f0/0x3e0 kernel/time/posix-timers.c:899 __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: 0033:0x7ff81e985d19 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:00007ff81f895038 EFLAGS: 00000246 ORIG_RAX: 00000000000000df RAX: ffffffffffffffda RBX: 00007ff81eb75fa0 RCX: 00007ff81e985d19 RDX: 0000000020000340 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 00007ff81ea01a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff81eb75fa0 R15: 00007ff81ec9fa28