option from the mount to silence this warning. ======================================================= UDF-fs: INFO Mounting volume 'LiuxUDF', timestamp 2022/11/22 14:59 (1000) ------------[ cut here ]------------ WARNING: fs/udf/inode.c:2088 at __udf_add_aext+0x524/0x6d0 fs/udf/inode.c:2087, CPU#1: syz.0.17/6004 Modules linked in: CPU: 1 UID: 0 PID: 6004 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__udf_add_aext+0x524/0x6d0 fs/udf/inode.c:2087 Code: ac e6 fe 49 8b 3e 4c 89 e6 e8 b8 e3 0a ff 31 c0 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d e9 83 7d 1d 08 cc e8 2d 49 80 fe 90 <0f> 0b 90 e9 14 fc ff ff e8 1f 49 80 fe 90 0f 0b 90 e9 66 fd ff ff RSP: 0018:ffffc90003527248 EFLAGS: 00010293 RAX: ffffffff83416e23 RBX: dffffc0000000000 RCX: ffff88807894db80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000001d0 RBP: 1ffff920006a4ee5 R08: ffff88807894db80 R09: 0000000000000002 R10: 0000000000000001 R11: 0000000000000000 R12: 00000000000001d0 R13: 0000000000000000 R14: ffffc90003527720 R15: ffffc90003527728 FS: 00005555888e9500(0000) GS:ffff888125f31000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9e399909c0 CR3: 0000000075d72000 CR4: 00000000003526f0 Call Trace: udf_setup_indirect_aext+0x609/0x800 fs/udf/inode.c:2050 udf_add_aext fs/udf/inode.c:2140 [inline] udf_do_extend_file+0x870/0x1180 fs/udf/inode.c:591 inode_getblk fs/udf/inode.c:843 [inline] udf_map_block+0xff2/0x45f0 fs/udf/inode.c:454 __udf_get_block+0x52/0x250 fs/udf/inode.c:468 __block_write_begin_int+0x6b5/0x1900 fs/buffer.c:2145 block_write_begin+0x8d/0x120 fs/buffer.c:2256 udf_write_begin+0x118/0x270 fs/udf/inode.c:262 generic_perform_write+0x2c5/0x900 mm/filemap.c:4314 udf_file_write_iter+0x2d5/0x6c0 fs/udf/file.c:111 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 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+0x193/0x220 fs/read_write.c:798 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcf8038f749 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:00007ffe8d8dbfc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007fcf805e5fa0 RCX: 00007fcf8038f749 RDX: 0000000010000000 RSI: 0000200000000300 RDI: 0000000000000004 RBP: 00007fcf80413f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000010000000005 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fcf805e5fa0 R14: 00007fcf805e5fa0 R15: 0000000000000004