UDF-fs: error (device loop5): udf_read_tagged: read failed, block=256, location=256 UDF-fs: warning (device loop5): udf_truncate_tail_extent: Too long extent after EOF in inode 94: i_size: 0 lbcount: 512 extent 31+512 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8696 at fs/udf/inode.c:2083 __udf_add_aext+0x63b/0x820 fs/udf/inode.c:2083 Modules linked in: CPU: 0 UID: 0 PID: 8696 Comm: syz.5.543 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:__udf_add_aext+0x63b/0x820 fs/udf/inode.c:2083 Code: f0 4c 8b 74 24 20 48 89 c6 48 89 44 24 10 4c 89 f7 e8 19 46 7c fe 48 8b 44 24 10 49 39 c6 0f 84 f0 fb ff ff e8 56 4b 7c fe 90 <0f> 0b 90 e9 e2 fb ff ff e8 48 4b 7c fe 4c 8b 74 24 10 49 81 c6 b0 RSP: 0018:ffffc900046cf250 EFLAGS: 00010287 RAX: 0000000000000628 RBX: ffffc900046cf630 RCX: ffffc9000c64d000 RDX: 0000000000080000 RSI: ffffffff833f52ca RDI: 0000000000000006 RBP: ffff8880520ea138 R08: 0000000000000006 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000010 R14: 0000000000000010 R15: ffffc900046cf638 FS: 00007fe9353006c0(0000) GS:ffff8881246b4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe9352def98 CR3: 00000000253af000 CR4: 0000000000350ef0 Call Trace: udf_add_aext+0x23a/0x2e0 fs/udf/inode.c:2145 udf_do_extend_file+0x228/0x8b0 fs/udf/inode.c:551 inode_getblk+0x114d/0x40e0 fs/udf/inode.c:843 udf_map_block+0x2dd/0x5b0 fs/udf/inode.c:454 __udf_get_block+0x98/0x330 fs/udf/inode.c:468 __block_write_begin_int+0x4f4/0x16d0 fs/buffer.c:2145 block_write_begin+0x9a/0x1d0 fs/buffer.c:2256 udf_write_begin+0x1e5/0x2a0 fs/udf/inode.c:262 generic_perform_write+0x3c5/0x900 mm/filemap.c:4175 __generic_file_write_iter+0x1f7/0x240 mm/filemap.c:4292 udf_file_write_iter+0x233/0x7b0 fs/udf/file.c:111 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x7d3/0x11d0 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+0x1eb/0x250 fs/read_write.c:798 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe93438eba9 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:00007fe935300038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007fe9345d5fa0 RCX: 00007fe93438eba9 RDX: 000000000000ff10 RSI: 0000200000000140 RDI: 0000000000000004 RBP: 00007fe934411e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000008000c61 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe9345d6038 R14: 00007fe9345d5fa0 R15: 00007ffd704f37f8