UDF-fs: warning (device loop0): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ================================================================== BUG: KASAN: use-after-free in crc_itu_t+0xce/0xe0 lib/crc-itu-t.c:62 Read of size 1 at addr ffff88808b9ea000 by task syz-executor275/8096 CPU: 0 PID: 8096 Comm: syz-executor275 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354 kasan_report mm/kasan/report.c:412 [inline] __asan_report_load1_noabort+0x88/0x90 mm/kasan/report.c:430 crc_itu_t+0xce/0xe0 lib/crc-itu-t.c:62 udf_close_lvid+0x47a/0x770 fs/udf/super.c:2064 udf_put_super+0x217/0x290 fs/udf/super.c:2361 generic_shutdown_super+0x144/0x370 fs/super.c:456 kill_block_super+0x97/0xf0 fs/super.c:1185 deactivate_locked_super+0x94/0x160 fs/super.c:329 deactivate_super+0x174/0x1a0 fs/super.c:360 cleanup_mnt+0x1a8/0x290 fs/namespace.c:1098 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f10e61dbda7 Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffda2bb8f48 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f10e61dbda7 RDX: 00007ffda2bb9007 RSI: 000000000000000a RDI: 00007ffda2bb9000 RBP: 00007ffda2bb9000 R08: 00000000ffffffff R09: 00007ffda2bb8de0 R10: 000055555646d683 R11: 0000000000000206 R12: 00007ffda2bba070 R13: 000055555646d5f0 R14: 00007ffda2bb8f70 R15: 0000000000000001 The buggy address belongs to the page: page:ffffea00022e7a80 count:0 mapcount:0 mapping:0000000000000000 index:0x1 flags: 0xfff00000000000() raw: 00fff00000000000 ffffea00022e7ac8 ffffea00022e79c8 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88808b9e9f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88808b9e9f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88808b9ea000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88808b9ea080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88808b9ea100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================