syzbot

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WARNING: CPU: 1 PID: 6314 at fs/ext4/inode.c:3794 ext4_iomap_begin+0x16c5/0x1900 fs/ext4/inode.c:3794
Modules linked in:
CPU: 1 UID: 0 PID: 6314 Comm: syz.4.70 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:ext4_iomap_begin+0x16c5/0x1900 fs/ext4/inode.c:3794
Code: 24 18 39 c3 0f 42 c3 41 01 c7 41 89 dc e9 3c f5 ff ff e8 de f5 51 ff c7 44 24 20 09 00 00 00 e9 18 f5 ff ff e8 cc f5 51 ff 90 <0f> 0b 90 41 be de ff ff ff 4c 8b 7c 24 70 e9 18 ed ff ff 89 d9 80
RSP: 0018:ffffc90004b2f520 EFLAGS: 00010293
RAX: ffffffff826cc834 RBX: ffff888054c5afb0 RCX: ffff88802d651e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004b2f6b8 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100a98b5f7 R12: dffffc0000000000
R13: 1ffff1100a98b673 R14: 0000000000000000 R15: 00000000000000d4
FS:  00007f47c26ad6c0(0000) GS:ffff888126efc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f41cf5c0000 CR3: 0000000035952000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 iomap_iter+0x534/0xde0 fs/iomap/iter.c:108
 __iomap_dio_rw+0xc5a/0x1e60 fs/iomap/direct-io.c:731
 iomap_dio_rw+0x45/0xb0 fs/iomap/direct-io.c:821
 ext4_dio_write_iter fs/ext4/file.c:580 [inline]
 ext4_file_write_iter+0x16ae/0x1be0 fs/ext4/file.c:721
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5d5/0xb40 fs/read_write.c:686
 ksys_pwrite64 fs/read_write.c:793 [inline]
 __do_sys_pwrite64 fs/read_write.c:801 [inline]
 __se_sys_pwrite64 fs/read_write.c:798 [inline]
 __x64_sys_pwrite64+0x196/0x220 fs/read_write.c:798
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f47c305efc9
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:00007f47c26ad038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f47c32b6090 RCX: 00007f47c305efc9
RDX: 00000000fffffd55 RSI: 0000200000000280 RDI: 0000000000000004
RBP: 00007f47c30e1f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f47c32b6128 R14: 00007f47c32b6090 R15: 00007ffedb20fd58
 </TASK>