------------[ cut here ]------------
WARNING: CPU: 1 PID: 5870 at fs/ext4/inode.c:3468 ext4_iomap_begin+0x9b5/0xb00 fs/ext4/inode.c:3468
Modules linked in:
CPU: 1 PID: 5870 Comm: syz.0.333 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:ext4_iomap_begin+0x9b5/0xb00 fs/ext4/inode.c:3468
Code: 6d 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 7d e1 5c ff 4c 8d ac 24 d0 00 00 00 e9 70 ff ff ff e8 6b e1 5c ff <0f> 0b 41 be de ff ff ff e9 62 f7 ff ff 44 89 e9 80 e1 07 38 c1 0f
RSP: 0018:ffffc90003c87040 EFLAGS: 00010293
RAX: ffffffff82255285 RBX: 1ffff92000790e1c RCX: ffff88802a703c00
RDX: 0000000000000000 RSI: 00000000000000d4 RDI: 0000000000000000
RBP: ffffc90003c871b8 R08: ffff888069d68a5f R09: 1ffff1100d3ad14b
R10: dffffc0000000000 R11: ffffed100d3ad14c R12: 00000000000000d4
R13: ffff888069d68d82 R14: 000000000000000b R15: 0000000000000000
FS:  00007f661b3876c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0fc944cc6b CR3: 000000005e9fb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 iomap_iter+0x671/0x1000 fs/iomap/iter.c:91
 __iomap_dio_rw+0xd90/0x1e90 fs/iomap/direct-io.c:597
 iomap_dio_rw+0x41/0xa0 fs/iomap/direct-io.c:686
 ext4_dio_write_iter fs/ext4/file.c:554 [inline]
 ext4_file_write_iter+0x137a/0x17d0 fs/ext4/file.c:674
 do_iter_readv_writev fs/read_write.c:-1 [inline]
 do_iter_write+0x638/0xb10 fs/read_write.c:861
 iter_file_splice_write+0x6be/0xcf0 fs/splice.c:685
 do_splice_from fs/splice.c:763 [inline]
 direct_splice_actor+0xe1/0x130 fs/splice.c:950
 splice_direct_to_actor+0x4b8/0xbd0 fs/splice.c:896
 do_splice_direct+0x1ce/0x2f0 fs/splice.c:1002
 do_sendfile+0x51b/0xe20 fs/read_write.c:1255
 __do_sys_sendfile64 fs/read_write.c:1323 [inline]
 __se_sys_sendfile64+0x141/0x1a0 fs/read_write.c:1309
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f661a59de99
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:00007f661b387028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f661a825fa0 RCX: 00007f661a59de99
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f661a633eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f661a826038 R14: 00007f661a825fa0 R15: 00007ffe230e5408
 </TASK>