------------[ cut here ]------------
WARNING: CPU: 1 PID: 1088 at fs/xfs/libxfs/xfs_bmap.c:4697 xfs_bmapi_convert_delalloc+0xad6/0xc90 fs/xfs/libxfs/xfs_bmap.c:4697
Modules linked in:
CPU: 1 PID: 1088 Comm: kworker/u32:6 Not tainted 6.9.0-rc5-syzkaller-00036-g9d1ddab261f3 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: writeback wb_workfn (flush-7:3)
RIP: 0010:xfs_bmapi_convert_delalloc+0xad6/0xc90 fs/xfs/libxfs/xfs_bmap.c:4697
Code: ff e8 0e e8 72 fe 8b 94 24 08 01 00 00 48 8b b4 24 10 01 00 00 48 8b 7c 24 70 e8 a5 1f 0d 00 e9 8b fd ff ff e8 eb e7 72 fe 90 <0f> 0b 90 bb e4 ff ff ff e9 f7 fd ff ff 48 89 ef e8 85 6b cf fe e9
RSP: 0018:ffffc9000743ef90 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffffffffffffffff RCX: ffffffff831b7643
RDX: ffff888018fda440 RSI: ffffffff831b7ce5 RDI: 0000000000000007
RBP: ffff888053ec64c0 R08: 0000000000000007 R09: ffffffffffffffff
R10: ffffffffffffffff R11: 0000000000000004 R12: 0000000000000000
R13: ffff8880191ce000 R14: ffff888053ec6500 R15: 0000000000000b8a
FS:  0000000000000000(0000) GS:ffff88802c300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002cb3a000 CR3: 000000001c30a000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 xfs_convert_blocks fs/xfs/xfs_aops.c:266 [inline]
 xfs_map_blocks+0x5d8/0xec0 fs/xfs/xfs_aops.c:390
 iomap_writepage_map_blocks fs/iomap/buffered-io.c:1777 [inline]
 iomap_writepage_map fs/iomap/buffered-io.c:1925 [inline]
 iomap_do_writepage+0x6f4/0x2c40 fs/iomap/buffered-io.c:1964
 write_cache_pages+0xb0/0x130 mm/page-writeback.c:2569
 iomap_writepages+0xa9/0x100 fs/iomap/buffered-io.c:1983
 xfs_vm_writepages+0xed/0x150 fs/xfs/xfs_aops.c:507
 do_writepages+0x1a3/0x7f0 mm/page-writeback.c:2612
 __writeback_single_inode+0x163/0xf90 fs/fs-writeback.c:1650
 writeback_sb_inodes+0x5a6/0x10d0 fs/fs-writeback.c:1941
 wb_writeback+0x28a/0xb30 fs/fs-writeback.c:2117
 wb_do_writeback fs/fs-writeback.c:2264 [inline]
 wb_workfn+0x28d/0xf40 fs/fs-writeback.c:2304
 process_one_work+0x902/0x1a30 kernel/workqueue.c:3254
 process_scheduled_works kernel/workqueue.c:3335 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>