loop0: detected capacity change from 0 to 2048 UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: error (device loop0): udf_verify_fi: directory (ino 1408) has entry at pos 216 with incorrect tag 108 ------------[ cut here ]------------ ret WARNING: fs/udf/namei.c:214 at udf_expand_dir_adinicb fs/udf/namei.c:214 [inline], CPU#1: syz.0.1097/15971 WARNING: fs/udf/namei.c:214 at udf_fiiter_add_entry+0x1a78/0x20c0 fs/udf/namei.c:262, CPU#1: syz.0.1097/15971 Modules linked in: CPU: 1 UID: 0 PID: 15971 Comm: syz.0.1097 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:udf_expand_dir_adinicb fs/udf/namei.c:214 [inline] RIP: 0010:udf_fiiter_add_entry+0x1a78/0x20c0 fs/udf/namei.c:262 Code: 00 00 e8 fb 93 76 fe 44 89 f1 41 d3 ec 41 01 dc 44 89 64 24 58 e9 ec fb ff ff e8 e3 93 76 fe e9 be fe ff ff e8 d9 93 76 fe 90 <0f> 0b 90 e9 b9 f8 ff ff 44 89 f9 80 e1 07 38 c1 0f 8c 81 e6 ff ff RSP: 0018:ffffc90005a177a0 EFLAGS: 00010287 RAX: ffffffff834de2f7 RBX: fffff52000b42f18 RCX: 0000000000080000 RDX: ffffc900197b2000 RSI: 00000000000023a8 RDI: 00000000000023a9 RBP: ffffc90005a17bb0 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed1006724657 R12: f8f8f8f8f8f8f8f8 R13: ffff888062cc0040 R14: 00000000ffffff8b R15: ffffc90005a17c00 FS: 00007f08ff0ae6c0(0000) GS:ffff888126276000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f08ff06bff8 CR3: 000000005e2c6000 CR4: 00000000003526f0 Call Trace: udf_link+0xff/0x360 fs/udf/namei.c:738 vfs_link+0x518/0x6e0 fs/namei.c:5774 filename_linkat+0x273/0x600 fs/namei.c:5842 __do_sys_link fs/namei.c:5875 [inline] __se_sys_link+0x55/0x2c0 fs/namei.c:5871 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0900e5cdd9 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:00007f08ff0ae028 EFLAGS: 00000246 ORIG_RAX: 0000000000000056 RAX: ffffffffffffffda RBX: 00007f09010d5fa0 RCX: 00007f0900e5cdd9 RDX: 0000000000000000 RSI: 0000200000000680 RDI: 00002000000001c0 RBP: 00007f0900ef2d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f09010d6038 R14: 00007f09010d5fa0 R15: 00007ffe1eeb03c8