------------[ cut here ]------------
WARNING: CPU: 0 PID: 10763 at fs/ext4/inode.c:3403 ext4_iomap_begin+0x9c4/0xb10 fs/ext4/inode.c:3403
Modules linked in:
CPU: 0 PID: 10763 Comm: syz.3.1593 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:ext4_iomap_begin+0x9c4/0xb10 fs/ext4/inode.c:3403
Code: 6d 44 89 e8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 de 23 53 ff 4c 8d b4 24 d0 00 00 00 e9 70 ff ff ff e8 cc 23 53 ff <0f> 0b 41 bd de ff ff ff e9 5c f7 ff ff 44 89 e9 80 e1 07 38 c1 0f
RSP: 0018:ffffc90019187060 EFLAGS: 00010287
RAX: ffffffff82346784 RBX: 1ffff92003230e20 RCX: 0000000000080000
RDX: ffffc9000d5da000 RSI: 0000000000008ece RDI: 0000000000008ecf
RBP: ffffc900191871d8 R08: ffff88805e1fa857 R09: 1ffff1100bc3f50a
R10: dffffc0000000000 R11: ffffed100bc3f50b R12: 00000000000000d4
R13: ffff88805e1fab8a R14: 000000000000000b R15: 0000000000000000
FS:  00007fc5750086c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6076e92000 CR3: 0000000025a38000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 iomap_iter+0x65b/0xe70 fs/iomap/iter.c:91
 __iomap_dio_rw+0xc60/0x1d00 fs/iomap/direct-io.c:673
 iomap_dio_rw+0x45/0xa0 fs/iomap/direct-io.c:763
 ext4_dio_write_iter fs/ext4/file.c:584 [inline]
 ext4_file_write_iter+0x1502/0x1980 fs/ext4/file.c:703
 do_iter_readv_writev fs/read_write.c:-1 [inline]
 do_iter_write+0x747/0xc50 fs/read_write.c:860
 iter_file_splice_write+0x6b6/0xcf0 fs/splice.c:736
 do_splice_from fs/splice.c:933 [inline]
 direct_splice_actor+0xe8/0x130 fs/splice.c:1142
 splice_direct_to_actor+0x30b/0x8e0 fs/splice.c:1088
 do_splice_direct+0x1d5/0x2f0 fs/splice.c:1194
 do_sendfile+0x52b/0xe80 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64+0x145/0x1a0 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc57419e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc575008028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fc574425fa0 RCX: 00007fc57419e159
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007fc57423503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc574426038 R14: 00007fc574425fa0 R15: 00007ffe73d9a568
 </TASK>