gfs2: fsid=syz:syz.0: fatal assertion failed
------------[ cut here ]------------
kernel BUG at fs/gfs2/quota.c:334!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5318 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:__qd_hold fs/gfs2/quota.c:334 [inline]
RIP: 0010:do_qc+0x5b9/0x5d0 fs/gfs2/quota.c:720
Code: 7e fd 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 74 09 48 8b 3c 24 e8 74 7f ed fd 48 8b 04 24 48 8b 38 e8 68 7e e2 fc 90 <0f> 0b e8 30 54 7e fd 4c 89 ef e8 58 7e e2 fc 90 0f 0b 0f 1f 44 00
RSP: 0018:ffffc9000e997290 EFLAGS: 00010246
RAX: 000000000000002c RBX: 0000000000000000 RCX: f0e292dc69692e00
RDX: ffffc90020802000 RSI: 0000000000012eba RDI: 0000000000012ebb
RBP: ffffffffffffffff R08: ffffc9000e997007 R09: 1ffff92001d32e00
R10: dffffc0000000000 R11: fffff52001d32e01 R12: ffff888043e2b3f0
R13: 1ffff110087c5683 R14: 1ffff110087c568c R15: ffff888043e2b480
FS:  00007f2e61ff56c0(0000) GS:ffff88808c549000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558c488c3950 CR3: 000000001fb53000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 gfs2_quota_change+0x36c/0x7b0 fs/gfs2/quota.c:1319
 punch_hole+0x2fab/0x3bc0 fs/gfs2/bmap.c:1986
 gfs2_iomap_end+0x4a7/0x7c0 fs/gfs2/bmap.c:1190
 iomap_iter+0x2dd/0xf80 fs/iomap/iter.c:77
 iomap_file_buffered_write+0x9ad/0xbb0 fs/iomap/buffered-io.c:1282
 gfs2_file_buffered_write+0x4ff/0x880 fs/gfs2/file.c:1065
 gfs2_file_write_iter+0x991/0x1170 fs/gfs2/file.c:1170
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x612/0xba0 fs/read_write.c:687
 ksys_write+0x150/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2e65b9de99
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:00007f2e61ff4fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f2e65e26090 RCX: 00007f2e65b9de99
RDX: 000000000208e24b RSI: 0000200000000040 RDI: 0000000000000009
RBP: 00007f2e65c33eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2e65e26128 R14: 00007f2e65e26090 R15: 00007ffec1b6d078
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__qd_hold fs/gfs2/quota.c:334 [inline]
RIP: 0010:do_qc+0x5b9/0x5d0 fs/gfs2/quota.c:720
Code: 7e fd 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 74 09 48 8b 3c 24 e8 74 7f ed fd 48 8b 04 24 48 8b 38 e8 68 7e e2 fc 90 <0f> 0b e8 30 54 7e fd 4c 89 ef e8 58 7e e2 fc 90 0f 0b 0f 1f 44 00
RSP: 0018:ffffc9000e997290 EFLAGS: 00010246
RAX: 000000000000002c RBX: 0000000000000000 RCX: f0e292dc69692e00
RDX: ffffc90020802000 RSI: 0000000000012eba RDI: 0000000000012ebb
RBP: ffffffffffffffff R08: ffffc9000e997007 R09: 1ffff92001d32e00
R10: dffffc0000000000 R11: fffff52001d32e01 R12: ffff888043e2b3f0
R13: 1ffff110087c5683 R14: 1ffff110087c568c R15: ffff888043e2b480
FS:  00007f2e61ff56c0(0000) GS:ffff88808c549000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558c488c3950 CR3: 000000001fb53000 CR4: 0000000000352ef0