REISERFS (device loop4): checking transaction log (loop4)
bridge19: port 1(syz_tun) entered disabled state
REISERFS (device loop4): Using rupasov hash to sort names
REISERFS (device loop4): using 3.5.x disk format
------------[ cut here ]------------
WARNING: CPU: 0 PID: 24942 at fs/inode.c:967 unlock_new_inode+0x9a/0xc0 fs/inode.c:967
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 24942 Comm: syz-executor.4 Not tainted 4.14.198-syzkaller #0
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+0x1b2/0x283 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x4b kernel/panic.c:547
 report_bug+0x208/0x249 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+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:unlock_new_inode+0x9a/0xc0 fs/inode.c:967
RSP: 0018:ffff88803d38f6d8 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff888051765328 RCX: ffffc9000bd1d000
RDX: 0000000000040000 RSI: ffffffff819310aa RDI: ffff8880517653b4
RBP: 0000000000000000 R08: ffffffff8a0a2740 R09: 000000000004081d
R10: ffff8880581eaf40 R11: ffff8880581ea640 R12: ffff888051765400
R13: ffff8880517653b0 R14: 0000000000000000 R15: 00000000fffffff4
 reiserfs_new_inode+0x3a4/0x2100 fs/reiserfs/inode.c:2167
 reiserfs_mkdir+0x41d/0x8b0 fs/reiserfs/namei.c:841
 create_privroot fs/reiserfs/xattr.c:873 [inline]
 reiserfs_xattr_init+0x393/0xa49 fs/reiserfs/xattr.c:995
 reiserfs_fill_super+0x1b10/0x28b6 fs/reiserfs/super.c:2180
 mount_bdev+0x2b3/0x360 fs/super.c:1134
 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:2549 [inline]
 do_mount+0xe53/0x2a00 fs/namespace.c:2879
 SYSC_mount fs/namespace.c:3095 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3072
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x46004a
RSP: 002b:00007fc53c0b9a88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc53c0b9b20 RCX: 000000000046004a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fc53c0b9ae0
RBP: 00007fc53c0b9ae0 R08: 00007fc53c0b9b20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020000040
Kernel Offset: disabled
Rebooting in 86400 seconds..