syzbot

WARNING: CPU: 1 PID: 4418 at fs/ext4/inode.c:3436 ext4_iomap_begin+0xa0d/0xb80 fs/ext4/inode.c:3436
Modules linked in:
CPU: 1 PID: 4418 Comm: syz-executor122 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:ffffc9000393efc0 EFLAGS: 00010293
RAX: ffffffff8208cded RBX: ffff88806ec8a152 RCX: ffff888021d29dc0
RDX: 0000000000000000 RSI: 00000000000000d4 RDI: 0000000000000000
RBP: ffffc9000393f140 R08: dffffc0000000000 R09: ffffed100dd913c8
R10: ffffed100dd913c8 R11: 1ffff1100dd913c7 R12: 00000000000000d4
R13: 1ffff1100dd9142a R14: 000000000000000a R15: 0000000000000000
FS:  00007faf95e2b6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faf95e4d000 CR3: 0000000019394000 CR4: 00000000003506f0
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+0xa69/0x1a70 fs/iomap/direct-io.c:585
 iomap_dio_rw+0x38/0x90 fs/iomap/direct-io.c:672
 ext4_dio_write_iter fs/ext4/file.c:540 [inline]
 ext4_file_write_iter+0x132b/0x17b0 fs/ext4/file.c:660
 do_iter_readv_writev+0x497/0x600 fs/read_write.c:-1
 do_iter_write+0x205/0x7b0 fs/read_write.c:855
 iter_file_splice_write+0x65f/0xc40 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0xe1/0x130 fs/splice.c:936
 splice_direct_to_actor+0x4dc/0xb50 fs/splice.c:891
 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: 0033:0x7faf95e8fcc9
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:00007faf95e2b218 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007faf95f176d8 RCX: 00007faf95e8fcc9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007faf95f176d0 R08: 00007ffd555d5127 R09: 0000000000000000
R10: 0000000000014000 R11: 0000000000000246 R12: 00007faf95ee4590
R13: 0031656c69662f2e R14: 0000200000000600 R15: 0000003202000000
 </TASK>