REISERFS (device loop5): journal params: device loop5, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
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WARNING: CPU: 0 PID: 10634 at fs/inode.c:286 drop_nlink.cold+0x11/0x41 fs/inode.c:286
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 10634 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0
REISERFS (device loop5): checking transaction log (loop5)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
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:drop_nlink.cold+0x11/0x41 fs/inode.c:286
Code: f9 e8 9c bd 6d f9 48 c7 c7 80 a8 74 88 e8 fb ee fe ff 0f 0b e9 9f 50 b4 f9 e8 84 bd 6d f9 48 c7 c7 80 b0 74 88 e8 e3 ee fe ff <0f> 0b b8 ff ff 37 00 4c 89 e2 48 c1 ea 03 48 c1 e0 2a 0f b6 04 02
RSP: 0018:ffff888090f9f940 EFLAGS: 00010282
RAX: 0000000000000024 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff814dff01 RDI: ffffed10121f3f1a
RBP: ffff8880499b9900 R08: 0000000000000024 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880499b9948
R13: 0000000000000000 R14: ffff888090f9f9e0 R15: ffff8880499b9928
 reiserfs_mkdir+0x785/0x980 fs/reiserfs/namei.c:846
 create_privroot fs/reiserfs/xattr.c:880 [inline]
 reiserfs_xattr_init+0x406/0xae0 fs/reiserfs/xattr.c:1002
 reiserfs_fill_super+0x1f54/0x2d80 fs/reiserfs/super.c:2188
REISERFS (device loop2): found reiserfs format "3.6" with non-standard journal
REISERFS (device loop2): using ordered data mode
 mount_bdev+0x2fc/0x3b0 fs/super.c:1158
reiserfs: using flush barriers
REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
 mount_fs+0xa3/0x310 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
REISERFS (device loop2): checking transaction log (loop2)
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2492 [inline]
 do_mount+0x115c/0x2f50 fs/namespace.c:2822
 ksys_mount+0xcf/0x130 fs/namespace.c:3038
 __do_sys_mount fs/namespace.c:3052 [inline]
 __se_sys_mount fs/namespace.c:3049 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3049
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7ff874e9b5fa
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
REISERFS (device loop2): Using r5 hash to sort names
RSP: 002b:00007ff87340bf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000001106 RCX: 00007ff874e9b5fa
RDX: 0000000020001100 RSI: 00000000200001c0 RDI: 00007ff87340bfe0
RBP: 00007ff87340c020 R08: 00007ff87340c020 R09: 0000000000208088
R10: 0000000000208088 R11: 0000000000000202 R12: 0000000020001100
R13: 00000000200001c0 R14: 00007ff87340bfe0 R15: 0000000020000240
Kernel Offset: disabled
Rebooting in 86400 seconds..