syzbot

------------[ cut here ]------------
WARNING: CPU: 1 PID: 5836 at fs/ext4/inode.c:3414 ext4_iomap_begin+0xab5/0xd50 fs/ext4/inode.c:3414
Modules linked in:
CPU: 1 UID: 0 PID: 5836 Comm: syz-executor405 Not tainted 6.15.0-rc1-syzkaller-00288-ge618ee89561b #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:ext4_iomap_begin+0xab5/0xd50 fs/ext4/inode.c:3414
Code: cc cc cc cc e8 8c cd 41 ff 49 c7 c7 20 70 65 93 49 be 00 00 00 00 00 fc ff df 48 8b 5c 24 48 e9 5f ff ff ff e8 6c cd 41 ff 90 <0f> 0b 90 41 bc de ff ff ff e9 76 f6 ff ff 89 d9 80 e1 07 38 c1 0f
RSP: 0018:ffffc9000411f4a0 EFLAGS: 00010293
RAX: ffffffff82817704 RBX: 0000000010000000 RCX: ffff888034768000
RDX: 0000000000000000 RSI: 00000000000000d4 RDI: 0000000000000000
RBP: ffffc9000411f610 R08: ffffffff82816e41 R09: 1ffff1100f067c6c
R10: dffffc0000000000 R11: ffffed100f067c6d R12: 00000000000000d4
R13: 1ffff1100f067cd8 R14: 000000000000000a R15: 0000000000000000
FS:  00007fb0ef7146c0(0000) GS:ffff8881250c9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb0ef713f80 CR3: 0000000075628000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 iomap_iter+0x50b/0xe10 fs/iomap/iter.c:109
 __iomap_dio_rw+0xdf8/0x24f0 fs/iomap/direct-io.c:733
 iomap_dio_rw+0x46/0xa0 fs/iomap/direct-io.c:823
 ext4_dio_write_iter fs/ext4/file.c:575 [inline]
 ext4_file_write_iter+0x18d8/0x1da0 fs/ext4/file.c:716
 new_sync_write fs/read_write.c:591 [inline]
 vfs_write+0x70f/0xd10 fs/read_write.c:684
 ksys_write+0x19d/0x2d0 fs/read_write.c:736
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb0ef7a2259
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:00007fb0ef714168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb0ef8296e8 RCX: 00007fb0ef7a2259
RDX: 0000000000002400 RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007fb0ef8296e0 R08: 00007fb0ef8296e0 R09: 0000000000000000
R10: 00007fb0ef714170 R11: 0000000000000246 R12: 00007fb0ef8296ec
R13: 000000000000006e R14: 00007ffee8309580 R15: 00007ffee8309668
 </TASK>