RDX: 0000000020000380 RSI: 00000000200003c0 RDI: 00007ffc54ccede0 RBP: 00007ffc54ccede0 R08: 00007ffc54ccee20 R09: 0000000000000364 R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000005 R13: 000055555658a2c0 R14: 0000000000000000 R15: 00007ffc54ccee20 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 8479 at fs/super.c:1163 kill_block_super+0xbe/0xe0 fs/super.c:1163 Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 1 PID: 8479 Comm: syz-executor275 Not tainted 4.14.307-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 panic+0x21d/0x451 kernel/panic.c:247 check_panic_on_warn.cold+0x19/0x35 kernel/panic.c:171 __warn+0xdf/0x1e0 kernel/panic.c:603 report_bug+0x208/0x250 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 RIP: 0010:kill_block_super+0xbe/0xe0 fs/super.c:1163 RSP: 0018:ffff888095dc7bb0 EFLAGS: 00010297 RAX: ffff88809947e580 RBX: 0000000000000000 RCX: 1ffff11012bb8f55 RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff888090742cb0 RBP: ffff888098fd8100 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: ffff88809947e580 R12: ffff888090742800 R13: ffffffff891bc830 R14: ffffffff88f46340 R15: dffffc0000000000 efs_kill_sb+0x38/0x50 fs/efs/super.c:33 deactivate_locked_super+0x6c/0xd0 fs/super.c:319 sget_userns+0x9c4/0xc10 fs/super.c:537 sget+0xd1/0x110 fs/super.c:572 mount_bdev+0xcd/0x360 fs/super.c:1107 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fdb6d4f78ca RSP: 002b:00007ffc54ccedc8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fdb6d4f78ca RDX: 0000000020000380 RSI: 00000000200003c0 RDI: 00007ffc54ccede0 RBP: 00007ffc54ccede0 R08: 00007ffc54ccee20 R09: 0000000000000364 R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000005 R13: 000055555658a2c0 R14: 0000000000000000 R15: 00007ffc54ccee20 Kernel Offset: disabled Rebooting in 86400 seconds..