loop0: detected capacity change from 0 to 32768
gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz"
gfs2: fsid=syz:syz: Now mounting FS (format 1801)...
gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents in 0ms
gfs2: fsid=syz:syz.0: first mount done, others may mount
gfs2: fsid=syz:syz.0: gfs2_check_dirent: name length is greater than space in dirent (not first in block)
gfs2: fsid=syz:syz.0: fatal: filesystem consistency error - inode = 2 4148, function = gfs2_dirent_scan, file = fs/gfs2/dir.c, line = 589
gfs2: fsid=syz:syz.0: G:  s:SH n:2/1034 f:aqob t:SH d:EX/0 a:0 v:0 r:2 m:20 p:1
gfs2: fsid=syz:syz.0:  H: s:SH f:H e:0 p:5312 [syz.0.0] gfs2_lookup_meta+0xa7/0x170 fs/gfs2/inode.c:280
gfs2: fsid=syz:syz.0:  I: n:2/4148 t:4 f:0x00 d:0x00000201 s:1816 p:0
gfs2: fsid=syz:syz.0: about to withdraw this file system
------------[ cut here ]------------
kernel BUG at fs/gfs2/util.c:340!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5312 Comm: syz.0.0 Not tainted 6.15.0-rc4-syzkaller-00256-g95d3481af6dc #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:gfs2_withdraw+0x1461/0x14f0 fs/gfs2/util.c:340
Code: ff ff 48 8b 4c 24 10 80 e1 07 80 c1 03 38 c1 0f 8c 31 f9 ff ff 48 8b 7c 24 10 e8 ca e3 2e fe e9 22 f9 ff ff e8 20 ef cc fd 90 <0f> 0b 48 8b 4c 24 10 80 e1 07 80 c1 03 38 c1 0f 8c 83 f9 ff ff 48
RSP: 0018:ffffc9000f6af580 EFLAGS: 00010287
RAX: ffffffff83f2d130 RBX: ffffc9000f6af640 RCX: 0000000000100000
RDX: ffffc9000de12000 RSI: 0000000000015afb RDI: 0000000000015afc
RBP: ffffc9000f6af710 R08: ffffc9000f6af267 R09: 1ffff92001ed5e4c
R10: dffffc0000000000 R11: fffff52001ed5e4d R12: dffffc0000000000
R13: 1ffff92001ed5ec4 R14: 1ffff110089ec015 R15: 0000000000000004
FS:  00007ff082c216c0(0000) GS:ffff88808d6cb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005595c926a000 CR3: 0000000041b03000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 gfs2_dirent_scan+0x545/0x690 fs/gfs2/dir.c:-1
 gfs2_dirent_search+0x2e0/0x7e0 fs/gfs2/dir.c:853
 gfs2_dir_search+0x4c/0x220 fs/gfs2/dir.c:1653
 gfs2_lookupi+0x3d9/0x5a0 fs/gfs2/inode.c:340
 gfs2_lookup_meta+0xa7/0x170 fs/gfs2/inode.c:280
 init_inodes+0x120/0x320 fs/gfs2/ops_fstype.c:870
 gfs2_fill_super+0x18a3/0x2050 fs/gfs2/ops_fstype.c:1249
 get_tree_bdev_flags+0x40b/0x4d0 fs/super.c:1636
 gfs2_get_tree+0x51/0x1e0 fs/gfs2/ops_fstype.c:1330
 vfs_get_tree+0x8f/0x2b0 fs/super.c:1759
 do_new_mount+0x24a/0xa40 fs/namespace.c:3884
 do_mount fs/namespace.c:4224 [inline]
 __do_sys_mount fs/namespace.c:4435 [inline]
 __se_sys_mount+0x317/0x410 fs/namespace.c:4412
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff081d9010a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff082c20e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff082c20ef0 RCX: 00007ff081d9010a
RDX: 000020000001f680 RSI: 0000200000000000 RDI: 00007ff082c20eb0
RBP: 000020000001f680 R08: 00007ff082c20ef0 R09: 0000000000000084
R10: 0000000000000084 R11: 0000000000000246 R12: 0000200000000000
R13: 00007ff082c20eb0 R14: 000000000001f73d R15: 0000200000000040
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:gfs2_withdraw+0x1461/0x14f0 fs/gfs2/util.c:340
Code: ff ff 48 8b 4c 24 10 80 e1 07 80 c1 03 38 c1 0f 8c 31 f9 ff ff 48 8b 7c 24 10 e8 ca e3 2e fe e9 22 f9 ff ff e8 20 ef cc fd 90 <0f> 0b 48 8b 4c 24 10 80 e1 07 80 c1 03 38 c1 0f 8c 83 f9 ff ff 48
RSP: 0018:ffffc9000f6af580 EFLAGS: 00010287
RAX: ffffffff83f2d130 RBX: ffffc9000f6af640 RCX: 0000000000100000
RDX: ffffc9000de12000 RSI: 0000000000015afb RDI: 0000000000015afc
RBP: ffffc9000f6af710 R08: ffffc9000f6af267 R09: 1ffff92001ed5e4c
R10: dffffc0000000000 R11: fffff52001ed5e4d R12: dffffc0000000000
R13: 1ffff92001ed5ec4 R14: 1ffff110089ec015 R15: 0000000000000004
FS:  00007ff082c216c0(0000) GS:ffff88808d6cb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005595c926a000 CR3: 0000000041b03000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400