------------[ cut here ]------------ WARNING: CPU: 1 PID: 9605 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: 9605 Comm: syz-executor.3 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:ffff88804a37fa30 EFLAGS: 00010093 RAX: ffff888094cc8280 RBX: ffff8880a1407cf0 RCX: 1ffff11012999162 RDX: 0000000000000000 RSI: ffffffff8164fe10 RDI: ffff8880a1407db8 RBP: ffff88804a37fac0 R08: 0000000000000002 R09: ffff888094cc8b18 R10: fffffbfff138aef8 R11: ffffffff89c577c7 R12: ffff8880a9af01c0 R13: 1ffff1100946ff47 R14: ffff88804a37fa98 R15: ffff8880a1407d48 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: 0033:0x4598e9 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:00007f833ff84c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00000000004598e9 RDX: 0000000000000016 RSI: 0000000000000006 RDI: 0000000000000003 RBP: 000000000075c310 R08: 000000000012f7e5 R09: 0000000000000000 R10: 0000000020000440 R11: 0000000000000246 R12: 00007f833ff856d4 R13: 00000000004cf290 R14: 00000000004dddd0 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..