------------[ cut here ]------------
WARNING: CPU: 1 PID: 4271 at fs/xfs/libxfs/xfs_bmap.c:4641 xfs_bmapi_convert_delalloc+0xb7c/0xdb0 fs/xfs/libxfs/xfs_bmap.c:4641
Modules linked in:
CPU: 1 PID: 4271 Comm: kworker/u4:6 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
Workqueue: writeback wb_workfn (flush-7:3)
RIP: 0010:xfs_bmapi_convert_delalloc+0xb7c/0xdb0 fs/xfs/libxfs/xfs_bmap.c:4641
Code: 1a f1 ff ff 48 8b bc 24 a0 01 00 00 e8 3d c3 18 00 41 89 c5 e9 ce f7 ff ff e8 20 6d 99 fe 0f 0b e9 af f7 ff ff e8 14 6d 99 fe <0f> 0b 41 bd e4 ff ff ff 8b 74 24 14 48 8d 9c 24 c0 00 00 00 eb a3
RSP: 0018:ffffc9000486eb00 EFLAGS: 00010293
RAX: ffffffff82dfb3bc RBX: ffffffffffffffff RCX: ffff888025d95940
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: ffffffffffffffff
RBP: ffffc9000486ed10 R08: ffffffff8d89db2f R09: 1ffffffff1b13b65
R10: dffffc0000000000 R11: fffffbfff1b13b66 R12: ffff888060d38f48
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200090dd70
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff378d1fd8 CR3: 000000001f432000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 xfs_convert_blocks fs/xfs/xfs_aops.c:245 [inline]
 xfs_map_blocks+0x96b/0x1350 fs/xfs/xfs_aops.c:366
 iomap_writepage_map fs/iomap/buffered-io.c:1320 [inline]
 iomap_do_writepage+0x657/0x2160 fs/iomap/buffered-io.c:1485
 write_cache_pages+0x9b7/0x1000 mm/page-writeback.c:2277
 iomap_writepages+0x5a/0x210 fs/iomap/buffered-io.c:1516
 xfs_vm_writepages+0x14a/0x1c0 fs/xfs/xfs_aops.c:488
 do_writepages+0x476/0x6e0 mm/page-writeback.c:2386
 __writeback_single_inode+0x153/0xda0 fs/fs-writeback.c:1657
 writeback_sb_inodes+0xa4e/0x1680 fs/fs-writeback.c:1940
 wb_writeback+0x45d/0xbe0 fs/fs-writeback.c:2114
 wb_do_writeback fs/fs-writeback.c:2257 [inline]
 wb_workfn+0x43a/0xf20 fs/fs-writeback.c:2298
 process_one_work+0x85f/0x1010 kernel/workqueue.c:2310
 worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>