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.s: journal 0 mapped with 18 extents in 0ms
gfs2: fsid=syz:syz.s: first mount done, others may mount
gfs2: fsid=syz:syz.s: gfs2_check_dirent: gfs2_dirent too small (not first in block)
gfs2: fsid=syz:syz.s: fatal: filesystem consistency error - inode = 12 2341, function = gfs2_dirent_scan, file = fs/gfs2/dir.c, line = 589
gfs2: fsid=syz:syz.s: G:  s:SH n:2/925 f:aqob t:SH d:EX/0 a:0 v:0 r:2 m:20 p:1
gfs2: fsid=syz:syz.s:  H: s:SH f:H e:0 p:5313 [syz.0.0] __gfs2_lookup+0x8f/0x270 fs/gfs2/inode.c:897
gfs2: fsid=syz:syz.s:  I: n:12/2341 t:4 f:0x00 d:0x00000001 s:3864 p:0
gfs2: fsid=syz:syz.s: 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: 5313 Comm: syz.0.0 Not tainted 6.15.0-rc5-syzkaller-00123-g2c89c1b655c0 #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 4a eb 2e fe e9 22 f9 ff ff e8 e0 f6 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:ffffc9000d5af460 EFLAGS: 00010287
RAX: ffffffff83f2d970 RBX: ffffc9000d5af520 RCX: 0000000000100000
RDX: ffffc9000df9a000 RSI: 0000000000002eb7 RDI: 0000000000002eb8
RBP: ffffc9000d5af5f0 R08: ffffc9000d5af147 R09: 1ffff92001ab5e28
R10: dffffc0000000000 R11: fffff52001ab5e29 R12: dffffc0000000000
R13: 1ffff92001ab5ea0 R14: 1ffff11007dd1815 R15: 0000000000000004
FS:  00007f201099a6c0(0000) GS:ffff88808d6cc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 00000000431a0000 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+0x8f/0x270 fs/gfs2/inode.c:897
 __lookup_slow+0x294/0x3d0 fs/namei.c:1817
 lookup_slow+0x53/0x70 fs/namei.c:1834
 walk_component+0x2d2/0x400 fs/namei.c:2138
 lookup_last fs/namei.c:2636 [inline]
 path_lookupat+0x163/0x430 fs/namei.c:2660
 filename_lookup+0x212/0x570 fs/namei.c:2689
 user_path_at+0x3a/0x60 fs/namei.c:3120
 do_mount fs/namespace.c:4221 [inline]
 __do_sys_mount fs/namespace.c:4435 [inline]
 __se_sys_mount+0x2d3/0x410 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: 0033:0x7f200fb8e969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f201099a038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f200fdb5fa0 RCX: 00007f200fb8e969
RDX: 0000200000000580 RSI: 0000200000000540 RDI: 0000000000000000
RBP: 00007f200fc10ab1 R08: 0000200000000080 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f200fdb5fa0 R15: 00007ffd7c8197c8
 </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 4a eb 2e fe e9 22 f9 ff ff e8 e0 f6 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:ffffc9000d5af460 EFLAGS: 00010287
RAX: ffffffff83f2d970 RBX: ffffc9000d5af520 RCX: 0000000000100000
RDX: ffffc9000df9a000 RSI: 0000000000002eb7 RDI: 0000000000002eb8
RBP: ffffc9000d5af5f0 R08: ffffc9000d5af147 R09: 1ffff92001ab5e28
R10: dffffc0000000000 R11: fffff52001ab5e29 R12: dffffc0000000000
R13: 1ffff92001ab5ea0 R14: 1ffff11007dd1815 R15: 0000000000000004
FS:  00007f201099a6c0(0000) GS:ffff88808d6cc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2010978fc8 CR3: 00000000431a0000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400