------------[ cut here ]------------ WARNING: CPU: 1 PID: 23616 at kernel/time/posix-cpu-timers.c:401 posix_cpu_timer_del+0x2f0/0x3b0 kernel/time/posix-cpu-timers.c:401 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 23616 Comm: syz-executor.4 Not tainted 5.3.0-rc6-next-20190830 #75 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2dc/0x755 kernel/panic.c:220 __warn.cold+0x2f/0x3c kernel/panic.c:581 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:posix_cpu_timer_del+0x2f0/0x3b0 kernel/time/posix-cpu-timers.c:401 Code: 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 83 bb c8 00 00 00 00 74 16 e8 00 58 0d 00 <0f> 0b e9 87 fe ff ff e8 c4 38 48 00 e9 dd fd ff ff e8 ea 57 0d 00 RSP: 0018:ffff88808c5afa30 EFLAGS: 00010093 RAX: ffff888095b42580 RBX: ffff888097b1ccf0 RCX: 1ffff11012b685c2 RDX: 0000000000000000 RSI: ffffffff8164fe10 RDI: ffff888097b1cdb8 RBP: ffff88808c5afac0 R08: 0000000000000002 R09: ffff888095b42e18 R10: fffffbfff138aef8 R11: ffffffff89c577c7 R12: ffff8880974f0140 R13: 1ffff110118b5f47 R14: ffff88808c5afa98 R15: ffff888097b1cd48 timer_delete_hook kernel/time/posix-timers.c:978 [inline] itimer_delete kernel/time/posix-timers.c:1021 [inline] exit_itimers+0xdb/0x2e0 kernel/time/posix-timers.c:1041 do_exit+0x1980/0x2e60 kernel/exit.c:853 do_group_exit+0x135/0x360 kernel/exit.c:983 get_signal+0x47c/0x2500 kernel/signal.c:2734 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x286/0x380 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x65f/0x760 arch/x86/entry/common.c:300 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459879 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc948d5f18 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffdfc RBX: 00000000000003e8 RCX: 0000000000459879 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075bf2c RBP: 000000000000002d R08: ffffffffffffffff R09: ffffffffffffffff R10: 00007ffc948d5ff0 R11: 0000000000000246 R12: 000000000075bf20 R13: 00000000002b7fc7 R14: 00000000002b7ff4 R15: 000000000075bf2c Kernel Offset: disabled Rebooting in 86400 seconds..