capability: warning: `syz.0.0' uses deprecated v2 capabilities in a way that may be insecure
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: found 1 quota changes
gfs2: fsid=syz:syz.0: fatal assertion failed
------------[ cut here ]------------
kernel BUG at fs/gfs2/quota.c:320!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5359 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:__qd_hold fs/gfs2/quota.c:320 [inline]
RIP: 0010:do_qc+0x5c1/0x5e0 fs/gfs2/quota.c:705
Code: 00 00 00 00 00 fc ff df 48 8b 0c 24 80 3c 01 00 74 0a 48 8b 7c 24 10 e8 3d 3f 28 fe 48 8b 44 24 10 48 8b 38 e8 c0 ff 2d fd 90 <0f> 0b e8 38 54 c3 fd 48 8b 7c 24 10 e8 ae ff 2d fd 90 0f 0b 66 66
RSP: 0018:ffffc9000d3f6ca8 EFLAGS: 00010246
RAX: 000000000000002c RBX: 1ffff110097b3c0e RCX: 6c3725f7f5e74b00
RDX: ffffc9000dee2000 RSI: 0000000000031221 RDI: 0000000000031222
RBP: 0000000000000001 R08: ffff88801fc24253 R09: 1ffff11003f8484a
R10: dffffc0000000000 R11: ffffed1003f8484b R12: ffff88804bd9e000
R13: ffff88804bd9e070 R14: ffff88804bd9e090 R15: 0000000000000000
FS:  00007f437fb7c6c0(0000) GS:ffff88808d210000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f437fb5afc8 CR3: 0000000043fb8000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_quota_change+0x394/0x800 fs/gfs2/quota.c:1304
 gfs2_alloc_blocks+0x18bc/0x2080 fs/gfs2/rgrp.c:2494
 __gfs2_iomap_alloc+0x4b7/0x1a30 fs/gfs2/bmap.c:708
 gfs2_iomap_begin_write fs/gfs2/bmap.c:1070 [inline]
 gfs2_iomap_begin+0xaf0/0x11c0 fs/gfs2/bmap.c:1133
 iomap_iter+0x534/0xde0 fs/iomap/iter.c:108
 iomap_file_buffered_write+0x207/0x9b0 fs/iomap/buffered-io.c:1065
 gfs2_file_buffered_write+0x4ed/0x880 fs/gfs2/file.c:1061
 gfs2_file_write_iter+0xbc6/0x1100 fs/gfs2/file.c:1141
 iter_file_splice_write+0x975/0x10e0 fs/splice.c:738
 do_splice_from fs/splice.c:938 [inline]
 direct_splice_actor+0x101/0x160 fs/splice.c:1161
 splice_direct_to_actor+0x5a5/0xcc0 fs/splice.c:1105
 do_splice_direct_actor fs/splice.c:1204 [inline]
 do_splice_direct+0x181/0x270 fs/splice.c:1230
 do_sendfile+0x4da/0x7e0 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417
 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: 0033:0x7f437ed8ebe9
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:00007f437fb7c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f437efb5fa0 RCX: 00007f437ed8ebe9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007f437ee11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f437efb6038 R14: 00007f437efb5fa0 R15: 00007ffe9fe59868
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__qd_hold fs/gfs2/quota.c:320 [inline]
RIP: 0010:do_qc+0x5c1/0x5e0 fs/gfs2/quota.c:705
Code: 00 00 00 00 00 fc ff df 48 8b 0c 24 80 3c 01 00 74 0a 48 8b 7c 24 10 e8 3d 3f 28 fe 48 8b 44 24 10 48 8b 38 e8 c0 ff 2d fd 90 <0f> 0b e8 38 54 c3 fd 48 8b 7c 24 10 e8 ae ff 2d fd 90 0f 0b 66 66
RSP: 0018:ffffc9000d3f6ca8 EFLAGS: 00010246
RAX: 000000000000002c RBX: 1ffff110097b3c0e RCX: 6c3725f7f5e74b00
RDX: ffffc9000dee2000 RSI: 0000000000031221 RDI: 0000000000031222
RBP: 0000000000000001 R08: ffff88801fc24253 R09: 1ffff11003f8484a
R10: dffffc0000000000 R11: ffffed1003f8484b R12: ffff88804bd9e000
R13: ffff88804bd9e070 R14: ffff88804bd9e090 R15: 0000000000000000
FS:  00007f437fb7c6c0(0000) GS:ffff88808d210000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f437fb5afc8 CR3: 0000000043fb8000 CR4: 0000000000352ef0