------------[ cut here ]------------
WARNING: CPU: 0 PID: 5861 at fs/ext4/inode.c:3725 ext4_iomap_begin+0x16b4/0x18f0 fs/ext4/inode.c:3725
Modules linked in:
CPU: 0 UID: 0 PID: 5861 Comm: syz.0.16 Not tainted 6.15.0-syzkaller-g8630c59e9936 #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:ext4_iomap_begin+0x16b4/0x18f0 fs/ext4/inode.c:3725
Code: db 44 0f 45 fb e9 22 ec ff ff e8 97 ca 4c ff 41 bf e4 ff ff ff e9 12 ec ff ff e8 87 ca 4c ff e9 08 ec ff ff e8 7d ca 4c ff 90 <0f> 0b 90 41 bf de ff ff ff 49 be 00 00 00 00 00 fc ff df e9 ed ef
RSP: 0018:ffffc900029cf500 EFLAGS: 00010293
RAX: ffffffff82739473 RBX: ffff8880429062fa RCX: ffff888000622440
RDX: 0000000000000000 RSI: 00000000000000d4 RDI: 0000000000000000
RBP: ffffc900029cf698 R08: ffff888042905ff7 R09: 1ffff11008520bfe
R10: dffffc0000000000 R11: ffffed1008520bff R12: ffff888042906238
R13: 1ffff11008520c5f R14: 0000000000000000 R15: 00000000000000d4
FS:  00007f25705026c0(0000) GS:ffff88808d252000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000000040 CR3: 000000003470a000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 iomap_iter+0x53a/0xdf0 fs/iomap/iter.c:109
 __iomap_dio_rw+0xc67/0x1e40 fs/iomap/direct-io.c:733
 iomap_dio_rw+0x45/0xb0 fs/iomap/direct-io.c:823
 ext4_dio_write_iter fs/ext4/file.c:580 [inline]
 ext4_file_write_iter+0x16a2/0x1bc0 fs/ext4/file.c:721
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x54b/0xa90 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/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f256f78d169
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:00007f2570502038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f256f9a5fa0 RCX: 00007f256f78d169
RDX: 0000000000001006 RSI: 0000400000006c00 RDI: 0000000000000004
RBP: 00007f256f80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f256f9a5fa0 R15: 00007fffbbaa2678
 </TASK>