syzbot

WARNING: CPU: 0 PID: 4597 at fs/ext4/inode.c:3436 ext4_iomap_begin+0xa0d/0xb80 fs/ext4/inode.c:3436
Modules linked in:
CPU: 0 PID: 4597 Comm: syz-executor130 Not tainted 5.15.181-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:ext4_iomap_begin+0xa0d/0xb80 fs/ext4/inode.c:3436
Code: 89 e8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 37 f0 6e ff 48 bb 00 00 00 00 00 fc ff df e9 71 ff ff ff e8 23 f0 6e ff <0f> 0b 41 bd de ff ff ff 48 bb 00 00 00 00 00 fc ff df e9 7b ff ff
RSP: 0018:ffffc90003ddf3c0 EFLAGS: 00010293
RAX: ffffffff8208cded RBX: ffff888070193542 RCX: ffff888029898000
RDX: 0000000000000000 RSI: 00000000000000d4 RDI: 0000000000000000
RBP: ffffc90003ddf540 R08: dffffc0000000000 R09: ffffed100e032646
R10: ffffed100e032646 R11: 1ffff1100e032645 R12: 00000000000000d4
R13: 1ffff1100e0326a8 R14: 000000000000000a R15: 0000000000000001
FS:  00007fb256a196c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb256a3b000 CR3: 00000000199ba000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 iomap_iter+0x620/0xdb0 fs/iomap/iter.c:74
 __iomap_dio_rw+0x1014/0x1a70 fs/iomap/direct-io.c:585
 iomap_dio_rw+0x38/0x90 fs/iomap/direct-io.c:672
 ext4_dio_read_iter fs/ext4/file.c:77 [inline]
 ext4_file_read_iter+0x573/0x700 fs/ext4/file.c:128
 call_read_iter include/linux/fs.h:2166 [inline]
 generic_file_splice_read+0x3a2/0x590 fs/splice.c:311
 do_splice_to fs/splice.c:796 [inline]
 splice_direct_to_actor+0x413/0xb50 fs/splice.c:870
 do_splice_direct+0x1b9/0x2c0 fs/splice.c:979
 do_sendfile+0x5d5/0xec0 fs/read_write.c:1249
 __do_sys_sendfile64 fs/read_write.c:1317 [inline]
 __se_sys_sendfile64+0x13b/0x190 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: 0033:0x7fb256a7dcc9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 18 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb256a19218 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fb256b056d8 RCX: 00007fb256a7dcc9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007fb256b056d0 R08: 00007ffe3353aef7 R09: 0000000000000000
R10: 0000000000014000 R11: 0000000000000246 R12: 00007fb256ad2590
R13: 0031656c69662f2e R14: 0000200000000600 R15: 0000003202000000
 </TASK>