WARNING in cleanup

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in cleanup_mnt (2) fs				1	1291d	1289d	0/26	auto-closed as invalid on 2021/02/09 13:15
upstream	WARNING in cleanup_mnt fs				6	1786d	1890d	0/26	auto-closed as invalid on 2019/10/25 08:43

RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f6fb7611fe0 RBP: 00007f6fb7612020 R08: 00007f6fb7612020 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f6fb7611fe0 R15: 0000000020047a20 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 32370 at fs/namespace.c:1093 cleanup_mnt.cold+0x11/0x18 fs/namespace.c:1093 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 32370 Comm: syz-executor.0 Not tainted 4.19.211-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+0x1fc/0x2ef lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x5a kernel/panic.c:541 report_bug+0x262/0x2b0 lib/bug.c:183 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:1038 RIP: 0010:cleanup_mnt.cold+0x11/0x18 fs/namespace.c:1093 Code: ee 48 c7 c7 e0 c1 74 88 c6 05 8d 44 32 03 01 e8 67 ec fe ff e9 87 70 b5 f9 e8 f2 ba 6d f9 48 c7 c7 a0 c3 74 88 e8 51 ec fe ff <0f> 0b e9 9f bf b5 f9 e8 da ba 6d f9 48 c7 c7 80 c8 74 88 c6 05 5c RSP: 0018:ffff88809ba7fd48 EFLAGS: 00010286 RAX: 0000000000000024 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed101374ff9b RBP: 0000000000000008 R08: 0000000000000024 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880a3587800 R13: 0000000000000001 R14: 0000000000000007 R15: 0000000000000002 task_work_run+0x148/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbf3/0x2be0 kernel/exit.c:870 __do_sys_exit kernel/exit.c:936 [inline] __se_sys_exit kernel/exit.c:934 [inline] __x64_sys_exit+0x3e/0x50 kernel/exit.c:934 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7ff4d608e0e9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff4d4a03118 EFLAGS: 00000246 ORIG_RAX: 000000000000003c RAX: ffffffffffffffda RBX: 00007ff4d61a0f60 RCX: 00007ff4d608e0e9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ff4d60e808d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffed5eefd0f R14: 00007ff4d4a03300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds..