------------[ cut here ]------------
WARNING: fs/ext4/inode.c:3794 at ext4_iomap_begin+0x1613/0x1820 fs/ext4/inode.c:3794, CPU#1: syz.6.159/7041
Modules linked in:
CPU: 1 UID: 0 PID: 7041 Comm: syz.6.159 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ext4_iomap_begin+0x1613/0x1820 fs/ext4/inode.c:3794
Code: e9 a7 ec ff ff e8 fd 53 50 ff 41 bc e4 ff ff ff 4c 8b 6c 24 08 e9 92 ec ff ff e8 e8 53 50 ff e9 88 ec ff ff e8 de 53 50 ff 90 <0f> 0b 90 41 bc de ff ff ff e9 33 f0 ff ff 44 89 e1 80 e1 07 38 c1
RSP: 0018:ffffc900066270e0 EFLAGS: 00010293
RAX: ffffffff826f5852 RBX: 0000000000000000 RCX: ffff888029de1e40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90006627278 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1007dbe8f9 R12: ffff88803edf4baa
R13: ffff88803edf4aa8 R14: 00000000000000d4 R15: dffffc0000000000
FS:  00007f321bb2d6c0(0000) GS:ffff888126def000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff79357b000 CR3: 000000003beae000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 iomap_iter+0x5ef/0xeb0 fs/iomap/iter.c:110
 __iomap_dio_rw+0xc3d/0x1d90 fs/iomap/direct-io.c:752
 iomap_dio_rw+0x45/0xb0 fs/iomap/direct-io.c:847
 ext4_dio_write_iter fs/ext4/file.c:580 [inline]
 ext4_file_write_iter+0x16a8/0x1be0 fs/ext4/file.c:721
 iter_file_splice_write+0x977/0x10b0 fs/splice.c:738
 do_splice_from fs/splice.c:938 [inline]
 direct_splice_actor+0x104/0x160 fs/splice.c:1161
 splice_direct_to_actor+0x5b3/0xcd0 fs/splice.c:1105
 do_splice_direct_actor fs/splice.c:1204 [inline]
 do_splice_direct+0x187/0x270 fs/splice.c:1230
 do_sendfile+0x4ec/0x7f0 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f321d8ef749
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:00007f321bb2d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f321db46090 RCX: 00007f321d8ef749
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000006
RBP: 00007f321d973f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f321db46128 R14: 00007f321db46090 R15: 00007ffea34f3c68
 </TASK>