------------[ cut here ]------------ WARNING: CPU: 0 PID: 11412 at fs/ext4/inode.c:3415 ext4_iomap_begin+0xab5/0xd50 fs/ext4/inode.c:3415 Modules linked in: CPU: 0 UID: 0 PID: 11412 Comm: syz.6.616 Not tainted 6.15.0-rc3-syzkaller-00008-ga33b5a08cbbd #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:3415 Code: cc cc cc cc e8 1c f4 41 ff 4c 8d 3d d5 47 e4 10 49 be 00 00 00 00 00 fc ff df 48 8b 5c 24 48 e9 5f ff ff ff e8 fc f3 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: 0000:ffffc9000b61f4a0 EFLAGS: 00010287 RAX: ffffffff8280c864 RBX: 0000000010000000 RCX: 0000000000080000 RDX: ffffc9000dec0000 RSI: 0000000000000de1 RDI: 0000000000000de2 RBP: ffffc9000b61f610 R08: ffffffff8280bfa1 R09: 1ffff1100add0da9 R10: dffffc0000000000 R11: ffffed100add0daa R12: 00000000000000d4 R13: 1ffff1100add0e15 R14: 000000000000000a R15: 0000000000000000 FS: 00007fd8875b16c0(0000) GS:ffff888124fcf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000188 CR3: 000000002594e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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+0xf3/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd88678e169 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:00007fd8875b1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fd8869b6080 RCX: 00007fd88678e169 RDX: 0000000000002400 RSI: 0000200000000000 RDI: 0000000000000005 RBP: 00007fd886810a68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fd8869b6080 R15: 00007fffe5015618