------------[ cut here ]------------
WARNING: CPU: 1 PID: 7460 at fs/ext4/inode.c:3388 ext4_iomap_begin+0x9cd/0xb10 fs/ext4/inode.c:3388
Modules linked in:
CPU: 1 PID: 7460 Comm: syz.3.328 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:ext4_iomap_begin+0x9cd/0xb10 fs/ext4/inode.c:3388
Code: 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 6a 74 53 ff 4c 8b 64 24 28 48 8d 9c 24 d0 00 00 00 e9 6b ff ff ff e8 53 74 53 ff <0f> 0b 41 be de ff ff ff e9 4e f7 ff ff 89 d9 80 e1 07 38 c1 0f 8c
RSP: 0018:ffffc900033c7620 EFLAGS: 00010293
RAX: ffffffff8233a0bd RBX: ffff888073a8f18a RCX: ffff88802b6f5a00
RDX: 0000000000000000 RSI: 00000000000000d4 RDI: 0000000000000000
RBP: ffffc900033c7790 R08: ffff888073a8ee57 R09: 1ffff1100e751dca
R10: dffffc0000000000 R11: ffffed100e751dcb R12: 00000000000000d4
R13: 1ffff1100e751e31 R14: 000000000000000b R15: 0000000000000000
FS:  00007fef512656c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa4a4242000 CR3: 000000002bd85000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 iomap_iter+0x6b1/0xec0 fs/iomap/iter.c:91
 __iomap_dio_rw+0xc3d/0x1cc0 fs/iomap/direct-io.c:669
 iomap_dio_rw+0x45/0xa0 fs/iomap/direct-io.c:759
 ext4_dio_write_iter fs/ext4/file.c:577 [inline]
 ext4_file_write_iter+0x13fb/0x1880 fs/ext4/file.c:696
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x46c/0x990 fs/read_write.c:584
 ksys_pwrite64 fs/read_write.c:699 [inline]
 __do_sys_pwrite64 fs/read_write.c:709 [inline]
 __se_sys_pwrite64 fs/read_write.c:706 [inline]
 __x64_sys_pwrite64+0x19b/0x230 fs/read_write.c:706
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fef5039c799
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:00007fef51265028 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007fef50615fa0 RCX: 00007fef5039c799
RDX: 0000000000000001 RSI: 0000200000000880 RDI: 0000000000000004
RBP: 00007fef50432bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000083 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef50616038 R14: 00007fef50615fa0 R15: 00007ffd73bcf198
 </TASK>