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WARNING: CPU: 0 PID: 18176 at kernel/signal.c:378 task_participate_group_stop+0x228/0x2f0 kernel/signal.c:378
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 18176 Comm: 3 Not tainted 5.4.85-syzkaller-00188-g8657d5d6282f #0
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+0x1dd/0x24e lib/dump_stack.c:118
 panic+0x285/0x750 kernel/panic.c:221
 __warn+0x1fd/0x200 kernel/panic.c:582
 report_bug+0x390/0x4d0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 do_error_trap arch/x86/kernel/traps.c:272 [inline]
 do_invalid_op+0x6e/0x110 arch/x86/kernel/traps.c:291
 invalid_op+0x1e/0x30 arch/x86/entry/entry_64.S:1029
RIP: 0010:task_participate_group_stop+0x228/0x2f0 kernel/signal.c:378
Code: 00 41 8b 04 24 83 e0 cc 83 c8 01 41 89 04 24 b0 01 eb 07 e8 da a1 24 00 31 c0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c8 a1 24 00 <0f> 0b 48 b8 00 00 00 00 00 fc ff df 8a 04 03 84 c0 0f 85 89 00 00
RSP: 0000:ffff8881d12cfb18 EFLAGS: 00010093
RAX: ffffffff81401d38 RBX: 1ffff110351bd0a6 RCX: ffff8881b9384d80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff81401c72 R09: 0000000000000003
R10: ffffed103a259f69 R11: 0000000000000004 R12: ffff8881a8de84c0
R13: 1ffff11037270a50 R14: 0000000000060013 R15: ffff8881a8de8530
 do_signal_stop+0x668/0xa10 kernel/signal.c:2378
 get_signal+0xb9c/0x1f00 kernel/signal.c:2603
 do_signal+0x92/0x5d0 arch/x86/kernel/signal.c:815
 exit_to_usermode_loop arch/x86/entry/common.c:159 [inline]
 prepare_exit_to_usermode+0x207/0x310 arch/x86/entry/common.c:194
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0023:0xb7000000
Code: Bad RIP value.
RSP: 002b:00000000fffdade0 EFLAGS: 00000200 ORIG_RAX: 000000000000000b
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..