do_filp_open+0x18e/0x250 fs/namei.c:3600 do_sys_open+0x2c5/0x430 fs/open.c:1065 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 20181 at fs/super.c:1163 kill_block_super+0xc9/0xf0 fs/super.c:1163 SYSC_openat fs/open.c:1092 [inline] SyS_openat+0x30/0x40 fs/open.c:1086 Kernel panic - not syncing: panic_on_warn set ... do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4592c9 RSP: 002b:00007f9bd8fa9c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f9bd8fa9c90 RCX: 00000000004592c9 RDX: 0000000000002002 RSI: 0000000020000000 RDI: ffffffffffffff9c RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9bd8faa6d4 R13: 00000000004c59cb R14: 00000000004da0a0 R15: 0000000000000004 CPU: 1 PID: 20181 Comm: syz-executor.4 Not tainted 4.14.129 #23 kobject: 'loop5' (ffff8880a4a68120): kobject_uevent_env Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x138/0x19c lib/dump_stack.c:53 panic+0x1f2/0x426 kernel/panic.c:182 __warn.cold+0x2f/0x36 kernel/panic.c:546 report_bug+0x216/0x254 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x1bb/0x310 arch/x86/kernel/traps.c:295 kobject: 'loop5' (ffff8880a4a68120): fill_kobj_path: path = '/devices/virtual/block/loop5' do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:960 RIP: 0010:kill_block_super+0xc9/0xf0 fs/super.c:1163 RSP: 0018:ffff88808fdb7a48 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9000ac54000 RDX: 0000000000040000 RSI: ffffffff818d9da9 RDI: ffff88808720b560 RBP: ffff88808fdb7a60 R08: ffff888091742400 R09: 0000000000000001 R10: 0000000000000000 R11: ffff888091742400 R12: ffff888060b18280 R13: ffff88808720b1c0 R14: ffff888060b18280 R15: dffffc0000000000 gfs2_kill_sb+0x14e/0x1a0 fs/gfs2/ops_fstype.c:1384 deactivate_locked_super+0x74/0xe0 fs/super.c:319 sget_userns+0x9d9/0xc30 fs/super.c:537 sget+0xd6/0x120 fs/super.c:572 gfs2_mount+0x13e/0x556 fs/gfs2/ops_fstype.c:1278 mount_fs+0x97/0x2a1 fs/super.c:1237 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x417/0x27d0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3072 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45bd1a RSP: 002b:00007fbd1d1a1a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fbd1d1a1b40 RCX: 000000000045bd1a RDX: 00007fbd1d1a1ae0 RSI: 00000000200003c0 RDI: 00007fbd1d1a1b00 RBP: 0000000000000000 R08: 00007fbd1d1a1b40 R09: 00007fbd1d1a1ae0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004 R13: 00000000004c8220 R14: 00000000004dea68 R15: 0000000000000003 Kernel Offset: disabled Rebooting in 86400 seconds..