------------[ cut here ]------------
WARNING: CPU: 1 PID: 28247 at fs/ext4/inode.c:3794 ext4_iomap_begin+0x16c5/0x1900 fs/ext4/inode.c:3794
Modules linked in:
CPU: 1 UID: 0 PID: 28247 Comm: syz.9.2605 Tainted: G        W           syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:ext4_iomap_begin+0x16c5/0x1900 fs/ext4/inode.c:3794
Code: 24 18 39 c3 0f 42 c3 41 01 c7 41 89 dc e9 3c f5 ff ff e8 4e 45 55 ff c7 44 24 20 09 00 00 00 e9 18 f5 ff ff e8 3c 45 55 ff 90 <0f> 0b 90 41 be de ff ff ff 4c 8b 7c 24 70 e9 18 ed ff ff 89 d9 80
RSP: 0018:ffffc900058070a0 EFLAGS: 00010293
RAX: ffffffff826916b4 RBX: ffff88806ed03b88 RCX: ffff88803d51d940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90005807238 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100dda0772 R12: dffffc0000000000
R13: 1ffff1100dda07ee R14: 0000000000000000 R15: 00000000000000d4
FS:  00007fd26ea756c0(0000) GS:ffff8881269c5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3c3009f000 CR3: 0000000028114000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 iomap_iter+0x531/0xde0 fs/iomap/iter.c:108
 __iomap_dio_rw+0xc5a/0x1e30 fs/iomap/direct-io.c:728
 iomap_dio_rw+0x45/0xb0 fs/iomap/direct-io.c:818
 ext4_dio_write_iter fs/ext4/file.c:580 [inline]
 ext4_file_write_iter+0x16ae/0x1be0 fs/ext4/file.c:721
 iter_file_splice_write+0x97a/0x10f0 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+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd27082ebe9
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:00007fd26ea75038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fd270a56090 RCX: 00007fd27082ebe9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007fd2708b1e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd270a56128 R14: 00007fd270a56090 R15: 00007ffd907ff058
 </TASK>