syzbot

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WARNING: fs/ext4/inode.c:3794 at ext4_iomap_begin+0x1ea/0xf80 fs/ext4/inode.c:3794, CPU#1: syz.5.665/9574
Modules linked in:
CPU: 1 UID: 0 PID: 9574 Comm: syz.5.665 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ext4_iomap_begin+0x1ea/0xf80 fs/ext4/inode.c:3794
Code: c0 01 38 d0 7c 08 84 d2 0f 85 0e 0d 00 00 41 0f b7 9e 6a 05 00 00 31 ff 89 de e8 c1 56 3d ff 66 85 db 74 63 e8 47 5c 3d ff 90 <0f> 0b 90 41 bf de ff ff ff e8 38 5c 3d ff 48 8b 4c 24 60 48 b8 00
RSP: 0018:ffffc900046cf2e0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000000000a4 RCX: ffffffff8281770f
RDX: ffff88802acb8000 RSI: ffffffff82817719 RDI: 0000000000000003
RBP: ffffffff82817530 R08: 0000000000000003 R09: 0000000000000000
R10: 00000000000000a4 R11: ffff88802acb8b30 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8880650462d8 R15: ffffffff8ba77840
FS:  00007f262a61f6c0(0000) GS:ffff8881249fd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000300 CR3: 0000000055544000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 iomap_iter+0x5f5/0xfa0 fs/iomap/iter.c:110
 __iomap_dio_rw+0x7da/0x1df0 fs/iomap/direct-io.c:752
 iomap_dio_rw+0x40/0xa0 fs/iomap/direct-io.c:847
 ext4_dio_write_iter fs/ext4/file.c:580 [inline]
 ext4_file_write_iter+0x1682/0x1d00 fs/ext4/file.c:721
 iter_file_splice_write+0xa24/0x12b0 fs/splice.c:738
 do_splice_from fs/splice.c:938 [inline]
 direct_splice_actor+0x192/0x6c0 fs/splice.c:1161
 splice_direct_to_actor+0x345/0xa30 fs/splice.c:1105
 do_splice_direct_actor fs/splice.c:1204 [inline]
 do_splice_direct+0x174/0x240 fs/splice.c:1230
 do_sendfile+0xb06/0xe50 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64 fs/read_write.c:1417 [inline]
 __x64_sys_sendfile64+0x1d8/0x220 fs/read_write.c:1417
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f262978f749
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:00007f262a61f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f26299e6090 RCX: 00007f262978f749
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000006
RBP: 00007f2629813f91 R08: 0000000000000000 R09: 0000000000000000
R10: 080000000000001f R11: 0000000000000246 R12: 0000000000000000
R13: 00007f26299e6128 R14: 00007f26299e6090 R15: 00007ffcdc80e1a8
 </TASK>