------------[ cut here ]------------ WARNING: CPU: 0 PID: 19173 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: 0 PID: 19173 Comm: syz-executor.1 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:ffff888066ecfa30 EFLAGS: 00010093 RAX: ffff8880953dc680 RBX: ffff88809022a730 RCX: 1ffff11012a7b9e2 RDX: 0000000000000000 RSI: ffffffff8164fe10 RDI: ffff88809022a7f8 RBP: ffff888066ecfac0 R08: 0000000000000002 R09: ffff8880953dcf18 R10: fffffbfff138aef8 R11: ffffffff89c577c7 R12: ffff8880a91b01c0 R13: 1ffff1100cdd9f47 R14: ffff888066ecfa98 R15: ffff88809022a788 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: 0033:0x457d41 Code: 75 14 b8 23 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 24 d3 fb ff c3 48 83 ec 08 e8 ea 46 00 00 48 89 04 24 b8 23 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 33 47 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffc292ed640 EFLAGS: 00000293 ORIG_RAX: 0000000000000023 RAX: fffffffffffffdfc RBX: 0000000000073a1d RCX: 0000000000457d41 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffc292ed650 RBP: 0000000000000001 R08: 0000000031a0e5a2 R09: 0000000031a0e5a6 R10: 00007ffc292ed740 R11: 0000000000000293 R12: 000000000075bf20 R13: 000000000075c9a0 R14: 00000000007605e8 R15: ffffffffffffffff Kernel Offset: disabled Rebooting in 86400 seconds..