------------[ cut here ]------------
WARNING: CPU: 1 PID: 11016 at kernel/signal.c:378 task_participate_group_stop+0x200/0x260 kernel/signal.c:378
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 11016 Comm: 3 Not tainted 5.5.0-syzkaller #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+0x197/0x210 lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x3e kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:176 [inline]
 fixup_bug arch/x86/kernel/traps.c:171 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:269
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:288
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:task_participate_group_stop+0x200/0x260 kernel/signal.c:378
Code: d0 7c 04 84 d2 75 44 41 89 9d a4 00 00 00 41 bc 01 00 00 00 e9 59 ff ff ff e8 ac 34 2c 00 0f 0b e9 91 fe ff ff e8 a0 34 2c 00 <0f> 0b e9 fe fe ff ff 4c 89 e7 e8 c1 be 6a 00 e9 ca fe ff ff 4c 89
RSP: 0018:ffffc90001af7c20 EFLAGS: 00010046
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90004829000
RDX: 0000000000040000 RSI: ffffffff814941b0 RDI: 0000000000000005
RBP: ffffc90001af7c40 R08: ffff88804da38080 R09: fffff5200035ef84
R10: fffff5200035ef83 R11: 0000000000000003 R12: ffff88808b5472a0
R13: ffff88808b547200 R14: 0000000000040000 R15: ffffc90001af7f58
 do_signal_stop+0x1e6/0x840 kernel/signal.c:2367
 get_signal+0x101e/0x24f0 kernel/signal.c:2592
 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:813
 exit_to_usermode_loop+0x286/0x380 arch/x86/entry/common.c:160
 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:278 [inline]
 do_syscall_64+0x676/0x790 arch/x86/entry/common.c:304
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0023:0xb7000000
Code: Bad RIP value.
RSP: 002b:00000000ffbeef70 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..