loop0: detected capacity change from 0 to 32768
gfs2: fsid=statfs_quantum: Trying to join cluster "lock_nolock", "statfs_quantum"
gfs2: fsid=statfs_quantum: Now mounting FS (format 1801)...
gfs2: fsid=statfs_quantum.s: journal 0 mapped with 18 extents in 0ms
gfs2: fsid=statfs_quantum.s: first mount done, others may mount
gfs2: fsid=statfs_quantum.s: original: statfs_by_dentry fs/statfs.c:66 [inline]
gfs2: fsid=statfs_quantum.s: original: vfs_get_fsid+0x1ce/0x2e0 fs/statfs.c:77
gfs2: fsid=statfs_quantum.s: pid: 5316
gfs2: fsid=statfs_quantum.s: lock type: 3 req lock state : 3
gfs2: fsid=statfs_quantum.s: new: statfs_by_dentry fs/statfs.c:66 [inline]
gfs2: fsid=statfs_quantum.s: new: vfs_get_fsid+0x1ce/0x2e0 fs/statfs.c:77
gfs2: fsid=statfs_quantum.s: pid: 5316
gfs2: fsid=statfs_quantum.s: lock type: 3 req lock state : 3
gfs2: fsid=statfs_quantum.s: G:  s:SH n:3/12 f:aqon t:SH d:EX/0 a:0 v:0 r:3 m:20 p:0
gfs2: fsid=statfs_quantum.s:  H: s:SH f:aH e:0 p:5316 [syz.0.0] statfs_by_dentry fs/statfs.c:66 [inline]
gfs2: fsid=statfs_quantum.s:  H: s:SH f:aH e:0 p:5316 [syz.0.0] vfs_get_fsid+0x1ce/0x2e0 fs/statfs.c:77
gfs2: fsid=statfs_quantum.s:  R: n:18 f:80000000 b:0/0 i:0 q:0 r:0 e:0
------------[ cut here ]------------
kernel BUG at fs/gfs2/glock.c:1454!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5316 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:add_to_queue fs/gfs2/glock.c:1454 [inline]
RIP: 0010:gfs2_glock_nq+0x1249/0x15e0 fs/gfs2/glock.c:1496
Code: b5 ec fd 41 0f b7 0e 48 c7 c7 40 88 5d 8c 48 89 de 89 ea e8 e9 d4 da fc 31 ff 48 8b 74 24 28 ba 01 00 00 00 e8 98 6f ff ff 90 <0f> 0b 44 89 f1 80 e1 07 fe c1 38 c1 0f 8c 79 ee ff ff 4c 89 f7 e8
RSP: 0018:ffffc9000e447988 EFLAGS: 00010246
RAX: 3e7453cc75d5bb00 RBX: ffff8880129e5088 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: fffff52001c88f24
RBP: 0000000000000003 R08: ffff8880138fbb73 R09: 0000000000000000
R10: fffff52001c88ee0 R11: ffffed100271f76f R12: 1ffff11003863c03
R13: ffff88801c31e088 R14: ffff88801c31e092 R15: ffff88801c31e088
FS:  00007f43d9f4f6c0(0000) GS:ffff88808c2bc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f43cddff000 CR3: 0000000040860000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_glock_nq_init fs/gfs2/glock.h:253 [inline]
 gfs2_statfs_slow fs/gfs2/super.c:898 [inline]
 gfs2_statfs+0x564/0xbb0 fs/gfs2/super.c:972
 statfs_by_dentry fs/statfs.c:66 [inline]
 vfs_get_fsid+0x1ce/0x2e0 fs/statfs.c:77
 fanotify_test_fsid+0x8f/0x3d0 fs/notify/fanotify/fanotify_user.c:1746
 do_fanotify_mark+0x9a2/0x1020 fs/notify/fanotify/fanotify_user.c:2045
 __do_sys_fanotify_mark fs/notify/fanotify/fanotify_user.c:2143 [inline]
 __se_sys_fanotify_mark fs/notify/fanotify/fanotify_user.c:2139 [inline]
 __x64_sys_fanotify_mark+0xb5/0xd0 fs/notify/fanotify/fanotify_user.c:2139
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f43d8f9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f43d9f4efe8 EFLAGS: 00000246 ORIG_RAX: 000000000000012d
RAX: ffffffffffffffda RBX: 00007f43d9225fa0 RCX: 00007f43d8f9e159
RDX: 000000005000003a RSI: 0000000000000001 RDI: 0000000000000004
RBP: 00007f43d903506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f43d9226038 R14: 00007f43d9225fa0 R15: 00007ffd4976a278
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:add_to_queue fs/gfs2/glock.c:1454 [inline]
RIP: 0010:gfs2_glock_nq+0x1249/0x15e0 fs/gfs2/glock.c:1496
Code: b5 ec fd 41 0f b7 0e 48 c7 c7 40 88 5d 8c 48 89 de 89 ea e8 e9 d4 da fc 31 ff 48 8b 74 24 28 ba 01 00 00 00 e8 98 6f ff ff 90 <0f> 0b 44 89 f1 80 e1 07 fe c1 38 c1 0f 8c 79 ee ff ff 4c 89 f7 e8
RSP: 0018:ffffc9000e447988 EFLAGS: 00010246
RAX: 3e7453cc75d5bb00 RBX: ffff8880129e5088 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: fffff52001c88f24
RBP: 0000000000000003 R08: ffff8880138fbb73 R09: 0000000000000000
R10: fffff52001c88ee0 R11: ffffed100271f76f R12: 1ffff11003863c03
R13: ffff88801c31e088 R14: ffff88801c31e092 R15: ffff88801c31e088
FS:  00007f43d9f4f6c0(0000) GS:ffff88808c2bc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f43cddff000 CR3: 0000000040860000 CR4: 0000000000352ef0