WARNING: CPU: 1 PID: 8624 at kernel/signal.c:372 task_participate_group_stop+0x20a/0x260 kernel/signal.c:372 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 8624 Comm: file0 Not tainted 4.19.113-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+0x188/0x20d lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x46 kernel/panic.c:541 report_bug+0x262/0x2a0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1037 RIP: 0010:task_participate_group_stop+0x20a/0x260 kernel/signal.c:372 Code: a4 00 00 00 41 bc 01 00 00 00 e8 c1 b4 27 00 44 89 e0 5b 5d 41 5c 41 5d c3 e8 b2 b4 27 00 0f 0b e9 7e fe ff ff e8 a6 b4 27 00 <0f> 0b e9 ee fe ff ff 48 89 ef e8 f7 7f 5d 00 e9 b8 fe ff ff e8 fd RSP: 0018:ffff8880986b7bd8 EFLAGS: 00010093 RAX: ffff8880896541c0 RBX: 0000000000000000 RCX: ffffffff813fecd7 RDX: 0000000000000000 RSI: ffffffff813fedfa RDI: 0000000000000005 RBP: ffff88809e7677e0 R08: ffff8880896541c0 R09: ffffed1015218562 R10: ffffed1015218561 R11: ffff8880a90c2b0b R12: ffff88809e767740 R13: 0000000000040000 R14: ffff8880986b7f58 R15: dffffc0000000000 do_signal_stop+0x1df/0x840 kernel/signal.c:2276 get_signal+0xf3c/0x1f90 kernel/signal.c:2463 do_signal+0x8f/0x1710 arch/x86/kernel/signal.c:821 exit_to_usermode_loop+0x22b/0x2b0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x447c79 Code: Bad RIP value. RSP: 002b:00007fd68748fd98 EFLAGS: 00000246 ORIG_RAX: 000000000000000b RAX: ffffffffffffffea RBX: 00000000006e39f8 RCX: 0000000000447c79 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200000c0 RBP: 00000000006e39f0 R08: 00007fd687490700 R09: 0000000000000000 R10: 00007fd687490700 R11: 0000000000000246 R12: 00000000006e39fc R13: 0000000000000000 R14: 07007ff8464c457f R15: 000000000000f172 Kernel Offset: disabled Rebooting in 86400 seconds..