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: 5338 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 fd d4 26 fe 48 8b 44 24 10 48 8b 38 e8 00 73 2b fd 90 <0f> 0b e8 28 aa bf fd 48 8b 7c 24 10 e8 ee 72 2b fd 90 0f 0b 66 66
RSP: 0018:ffffc9000d476fe8 EFLAGS: 00010246
RAX: 000000000000002c RBX: 1ffff1100849e40e RCX: 8f65337b7b75e000
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffc9000d476d07 R09: 1ffff92001a8eda0
R10: dffffc0000000000 R11: fffff52001a8eda1 R12: ffff8880424f2000
R13: ffff8880424f2070 R14: ffff8880424f2090 R15: 0000000000000000
FS:  00007f146da3c6c0(0000) GS:ffff88808d98a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000000 CR3: 0000000010f14000 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_unstuff_inode fs/gfs2/bmap.c:107 [inline]
 gfs2_unstuff_dinode+0x22b/0x1320 fs/gfs2/bmap.c:166
 gfs2_page_mkwrite+0x145b/0x1910 fs/gfs2/file.c:511
 do_page_mkwrite+0x14a/0x310 mm/memory.c:3488
 wp_page_shared mm/memory.c:3889 [inline]
 do_wp_page+0x268d/0x5800 mm/memory.c:4108
 handle_pte_fault mm/memory.c:6193 [inline]
 __handle_mm_fault+0x1033/0x5400 mm/memory.c:6318
 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6487
 fixup_user_fault+0x33f/0x720 mm/gup.c:1588
 fault_in_safe_writeable+0x11f/0x240 mm/gup.c:2129
 fault_in_iov_iter_writeable+0x1b4/0x2f0 lib/iov_iter.c:137
 gfs2_file_direct_read fs/gfs2/file.c:859 [inline]
 gfs2_file_read_iter+0x513/0xc60 fs/gfs2/file.c:965
 new_sync_read fs/read_write.c:491 [inline]
 vfs_read+0x55a/0xa30 fs/read_write.c:572
 ksys_read+0x145/0x250 fs/read_write.c:715
 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: 0033:0x7f146cb8eec9
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:00007f146da3c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f146cde5fa0 RCX: 00007f146cb8eec9
RDX: 00000000000020f1 RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007f146cc11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f146cde6038 R14: 00007f146cde5fa0 R15: 00007fff2c836868
 </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 fd d4 26 fe 48 8b 44 24 10 48 8b 38 e8 00 73 2b fd 90 <0f> 0b e8 28 aa bf fd 48 8b 7c 24 10 e8 ee 72 2b fd 90 0f 0b 66 66
RSP: 0018:ffffc9000d476fe8 EFLAGS: 00010246
RAX: 000000000000002c RBX: 1ffff1100849e40e RCX: 8f65337b7b75e000
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffc9000d476d07 R09: 1ffff92001a8eda0
R10: dffffc0000000000 R11: fffff52001a8eda1 R12: ffff8880424f2000
R13: ffff8880424f2070 R14: ffff8880424f2090 R15: 0000000000000000
FS:  00007f146da3c6c0(0000) GS:ffff88808d98a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000000 CR3: 0000000010f14000 CR4: 0000000000352ef0