------------[ cut here ]------------
WARNING: CPU: 0 PID: 4276 at fs/ext4/inode.c:3438 ext4_iomap_begin+0xa12/0xb70 fs/ext4/inode.c:3438
Modules linked in:
CPU: 1 PID: 4276 Comm: syz.1.2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:ext4_iomap_begin+0xa12/0xb70 fs/ext4/inode.c:3438
Code: 89 d8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c2 59 6e ff 49 bd 00 00 00 00 00 fc ff df e9 70 ff ff ff e8 ae 59 6e ff <0f> 0b bb de ff ff ff e9 04 f7 ff ff 89 d9 80 e1 07 38 c1 0f 8c 9d
RSP: 0000:ffffc900032ef020 EFLAGS: 00010283
RAX: ffffffff820ab5f2 RBX: ffff8880612e975a RCX: 0000000000080000
RDX: ffffc90003ce3000 RSI: 0000000000007696 RDI: 0000000000007697
RBP: ffffc900032ef1a0 R08: ffff8880612e9447 R09: 1ffff1100c25d288
R10: dffffc0000000000 R11: ffffed100c25d289 R12: 00000000000000d4
R13: 1ffff1100c25d2eb R14: 000000000000000b R15: 0000000000000000
FS:  00007fcfab6366c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005617b92333d0 CR3: 000000001f9e1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 iomap_iter+0x604/0xda0 fs/iomap/iter.c:74
 __iomap_dio_rw+0xafd/0x1ba0 fs/iomap/direct-io.c:589
 iomap_dio_rw+0x38/0x90 fs/iomap/direct-io.c:676
 ext4_dio_write_iter fs/ext4/file.c:540 [inline]
 ext4_file_write_iter+0x12e6/0x1720 fs/ext4/file.c:660
 do_iter_readv_writev+0x47d/0x5f0 fs/read_write.c:-1
 do_iter_write+0x1f8/0x7a0 fs/read_write.c:855
 iter_file_splice_write+0x6be/0xcf0 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0xe1/0x130 fs/splice.c:956
 splice_direct_to_actor+0x4e8/0xc00 fs/splice.c:902
 do_splice_direct+0x1d4/0x2f0 fs/splice.c:1008
 do_sendfile+0x524/0xe30 fs/read_write.c:1249
 __do_sys_sendfile64 fs/read_write.c:1317 [inline]
 __se_sys_sendfile64+0x141/0x1a0 fs/read_write.c:1303
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fcfad3de159
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:00007fcfab636028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fcfad665fa0 RCX: 00007fcfad3de159
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007fcfad47503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcfad666038 R14: 00007fcfad665fa0 R15: 00007ffd9c3d4c58
 </TASK>