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+0x19c/0x270 fs/statfs.c:77
gfs2: fsid=statfs_quantum.s: pid: 5327
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+0x19c/0x270 fs/statfs.c:77
gfs2: fsid=statfs_quantum.s: pid: 5327
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:5327 [syz.0.0] statfs_by_dentry fs/statfs.c:66 [inline]
gfs2: fsid=statfs_quantum.s:  H: s:SH f:aH e:0 p:5327 [syz.0.0] vfs_get_fsid+0x19c/0x270 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:1527!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5327 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~bpo12+1 04/01/2014
RIP: 0010:add_to_queue fs/gfs2/glock.c:1527 [inline]
RIP: 0010:gfs2_glock_nq+0x146e/0x1830 fs/gfs2/glock.c:1568
Code: 2b fe 0f b7 0b 48 c7 c7 40 4a 91 8b 48 8b 74 24 20 89 ea e8 24 b5 2e fd 31 ff 48 8b 74 24 18 ba 01 00 00 00 e8 13 6e ff ff 90 <0f> 0b 44 89 f9 80 e1 07 fe c1 38 c1 0f 8c b8 ed ff ff 4c 89 ff e8
RSP: 0018:ffffc9000d58f980 EFLAGS: 00010246
RAX: 21e6d370bceb5700 RBX: ffff888040106092 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00000000ffffffff
RBP: 0000000000000003 R08: ffff888043705083 R09: 1ffff110086e0a10
R10: dffffc0000000000 R11: ffffed10086e0a11 R12: 1ffff11008020c03
R13: ffff888040106018 R14: ffff8880433a2658 R15: ffff888040106022
FS:  00007f79a1a4f6c0(0000) GS:ffff88808d969000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f79a1a4db28 CR3: 0000000041a31000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_glock_nq_init fs/gfs2/glock.h:252 [inline]
 gfs2_statfs_slow fs/gfs2/super.c:910 [inline]
 gfs2_statfs+0x41f/0xa50 fs/gfs2/super.c:984
 statfs_by_dentry fs/statfs.c:66 [inline]
 vfs_get_fsid+0x19c/0x270 fs/statfs.c:77
 fanotify_test_fsid+0x88/0x3c0 fs/notify/fanotify/fanotify_user.c:1685
 do_fanotify_mark+0x905/0xf80 fs/notify/fanotify/fanotify_user.c:1975
 __do_sys_fanotify_mark fs/notify/fanotify/fanotify_user.c:2070 [inline]
 __se_sys_fanotify_mark fs/notify/fanotify/fanotify_user.c:2066 [inline]
 __x64_sys_fanotify_mark+0xb5/0xd0 fs/notify/fanotify/fanotify_user.c:2066
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f79a0b8eec9
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:00007f79a1a4f038 EFLAGS: 00000246 ORIG_RAX: 000000000000012d
RAX: ffffffffffffffda RBX: 00007f79a0de5fa0 RCX: 00007f79a0b8eec9
RDX: 000000004800003e RSI: 0000000000000001 RDI: 000000000000000b
RBP: 00007f79a0c11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000000a R11: 0000000000000246 R12: 0000000000000000
R13: 00007f79a0de6038 R14: 00007f79a0de5fa0 R15: 00007ffd69d3e6e8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:add_to_queue fs/gfs2/glock.c:1527 [inline]
RIP: 0010:gfs2_glock_nq+0x146e/0x1830 fs/gfs2/glock.c:1568
Code: 2b fe 0f b7 0b 48 c7 c7 40 4a 91 8b 48 8b 74 24 20 89 ea e8 24 b5 2e fd 31 ff 48 8b 74 24 18 ba 01 00 00 00 e8 13 6e ff ff 90 <0f> 0b 44 89 f9 80 e1 07 fe c1 38 c1 0f 8c b8 ed ff ff 4c 89 ff e8
RSP: 0018:ffffc9000d58f980 EFLAGS: 00010246
RAX: 21e6d370bceb5700 RBX: ffff888040106092 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00000000ffffffff
RBP: 0000000000000003 R08: ffff888043705083 R09: 1ffff110086e0a10
R10: dffffc0000000000 R11: ffffed10086e0a11 R12: 1ffff11008020c03
R13: ffff888040106018 R14: ffff8880433a2658 R15: ffff888040106022
FS:  00007f79a1a4f6c0(0000) GS:ffff88808d969000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f79a1a4db28 CR3: 0000000041a31000 CR4: 0000000000352ef0