gfs2: fsid=syz:syz.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=syz:syz.s:  H: s:SH f:aH e:0 p:5510 [syz.0.17] statfs_by_dentry fs/statfs.c:66 [inline]
gfs2: fsid=syz:syz.s:  H: s:SH f:aH e:0 p:5510 [syz.0.17] vfs_get_fsid+0x19c/0x270 fs/statfs.c:77
gfs2: fsid=syz:syz.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:1460!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5510 Comm: syz.0.17 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:1460 [inline]
RIP: 0010:gfs2_glock_nq+0x1254/0x15f0 fs/gfs2/glock.c:1502
Code: 42 96 27 fe 0f b7 0b 48 c7 c7 e0 b5 b2 8b 4c 89 fe 89 ea e8 1e 8d 26 fd 31 ff 48 8b 74 24 20 ba 01 00 00 00 e8 bd 6f ff ff 90 <0f> 0b 44 89 f9 80 e1 07 fe c1 38 c1 0f 8c 60 ee ff ff 4c 89 ff e8
RSP: 0018:ffffc90002aff978 EFLAGS: 00010246
RAX: fe078d456cb11000 RBX: ffff888036ce0092 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00000000ffffffff
RBP: 0000000000000003 R08: ffff888035968083 R09: 1ffff11006b2d010
R10: dffffc0000000000 R11: ffffed1006b2d011 R12: ffff888036ce0022
R13: ffff888036ce0088 R14: ffff8880473be658 R15: ffff8880414c1070
FS:  000055557177b500(0000) GS:ffff88808d416000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31163fff CR3: 0000000049d22000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_glock_nq_init fs/gfs2/glock.h:252 [inline]
 gfs2_statfs_slow fs/gfs2/super.c:894 [inline]
 gfs2_statfs+0x41f/0xa50 fs/gfs2/super.c:968
 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:1771
 do_fanotify_mark+0x905/0xfd0 fs/notify/fanotify/fanotify_user.c:2061
 __do_sys_fanotify_mark fs/notify/fanotify/fanotify_user.c:2159 [inline]
 __se_sys_fanotify_mark fs/notify/fanotify/fanotify_user.c:2155 [inline]
 __x64_sys_fanotify_mark+0xb5/0xd0 fs/notify/fanotify/fanotify_user.c:2155
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f28a638f7c9
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:00007ffe62aad4f8 EFLAGS: 00000246 ORIG_RAX: 000000000000012d
RAX: ffffffffffffffda RBX: 00007f28a65e5fa0 RCX: 00007f28a638f7c9
RDX: 000000004800003e RSI: 0000000000000001 RDI: 0000000000000005
RBP: 00007f28a6413f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f28a65e5fa0 R14: 00007f28a65e5fa0 R15: 0000000000000005
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:add_to_queue fs/gfs2/glock.c:1460 [inline]
RIP: 0010:gfs2_glock_nq+0x1254/0x15f0 fs/gfs2/glock.c:1502
Code: 42 96 27 fe 0f b7 0b 48 c7 c7 e0 b5 b2 8b 4c 89 fe 89 ea e8 1e 8d 26 fd 31 ff 48 8b 74 24 20 ba 01 00 00 00 e8 bd 6f ff ff 90 <0f> 0b 44 89 f9 80 e1 07 fe c1 38 c1 0f 8c 60 ee ff ff 4c 89 ff e8
RSP: 0018:ffffc90002aff978 EFLAGS: 00010246
RAX: fe078d456cb11000 RBX: ffff888036ce0092 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00000000ffffffff
RBP: 0000000000000003 R08: ffff888035968083 R09: 1ffff11006b2d010
R10: dffffc0000000000 R11: ffffed1006b2d011 R12: ffff888036ce0022
R13: ffff888036ce0088 R14: ffff8880473be658 R15: ffff8880414c1070
FS:  000055557177b500(0000) GS:ffff88808d416000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31163fff CR3: 0000000049d22000 CR4: 0000000000352ef0