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 PTI
CPU: 1 UID: 0 PID: 11481 Comm: syz.5.924 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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 ed 66 27 fe 48 8b 44 24 10 48 8b 38 e8 a0 05 2d fd 90 <0f> 0b e8 d8 60 c3 fd 48 8b 7c 24 10 e8 8e 05 2d fd 90 0f 0b 66 66
RSP: 0018:ffffc9000f047288 EFLAGS: 00010246
RAX: 000000000000002c RBX: 1ffff1100a632b34 RCX: fafec590f0b4fb00
RDX: ffffc9001a286000 RSI: 000000000005edc5 RDI: 000000000005edc6
RBP: ffffffffffffffcd R08: ffffc9000f046fa7 R09: 1ffff92001e08df4
R10: dffffc0000000000 R11: fffff52001e08df5 R12: ffff888053195930
R13: ffff8880531959a0 R14: ffff8880531959c0 R15: 0000000000000000
FS:  00007f63648326c0(0000) GS:ffff888125af9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f092a7ff000 CR3: 00000000631c0000 CR4: 00000000003526f0
DR0: 0000000002000000 DR1: 0000000000000003 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 gfs2_quota_change+0x394/0x800 fs/gfs2/quota.c:1304
 punch_hole+0x26e7/0x2ca0 fs/gfs2/bmap.c:1961
 gfs2_iomap_end+0x4f8/0x6c0 fs/gfs2/bmap.c:1178
 iomap_iter+0x313/0xde0 fs/iomap/iter.c:79
 iomap_file_buffered_write+0x7fa/0x9b0 fs/iomap/buffered-io.c:1065
 gfs2_file_buffered_write+0x4ed/0x880 fs/gfs2/file.c:1061
 gfs2_file_write_iter+0x94e/0x1100 fs/gfs2/file.c:1166
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f636398ebe9
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:00007f6364832038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f6363bc6090 RCX: 00007f636398ebe9
RDX: 000000000208e24b RSI: 0000200000000040 RDI: 0000000000000007
RBP: 00007f6363a11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6363bc6128 R14: 00007f6363bc6090 R15: 00007ffe77f754d8
 </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 ed 66 27 fe 48 8b 44 24 10 48 8b 38 e8 a0 05 2d fd 90 <0f> 0b e8 d8 60 c3 fd 48 8b 7c 24 10 e8 8e 05 2d fd 90 0f 0b 66 66
RSP: 0018:ffffc9000f047288 EFLAGS: 00010246
RAX: 000000000000002c RBX: 1ffff1100a632b34 RCX: fafec590f0b4fb00
RDX: ffffc9001a286000 RSI: 000000000005edc5 RDI: 000000000005edc6
RBP: ffffffffffffffcd R08: ffffc9000f046fa7 R09: 1ffff92001e08df4
R10: dffffc0000000000 R11: fffff52001e08df5 R12: ffff888053195930
R13: ffff8880531959a0 R14: ffff8880531959c0 R15: 0000000000000000
FS:  00007f63648326c0(0000) GS:ffff888125af9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f092a7ff000 CR3: 00000000631c0000 CR4: 00000000003526f0
DR0: 0000000002000000 DR1: 0000000000000003 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400