loop0: detected capacity change from 0 to 2048 UDF-fs: error (device loop0): udf_read_tagged: read failed, block=17146, location=17146 UDF-fs: INFO Mounting volume 'LiuxUDF', timestamp 2022/11/22 14:59 (1000) ================================================================== BUG: KASAN: use-after-free in udf_close_lvid+0x6a4/0x9a0 fs/udf/super.c:2073 Write of size 1 at addr ffff88816162ddc0 by task syz-executor326/3546 CPU: 1 PID: 3546 Comm: syz-executor326 Not tainted 6.1.85-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 udf_close_lvid+0x6a4/0x9a0 fs/udf/super.c:2073 udf_put_super+0xc9/0x160 fs/udf/super.c:2360 generic_shutdown_super+0x130/0x340 fs/super.c:501 kill_block_super+0x7a/0xe0 fs/super.c:1459 deactivate_locked_super+0xa0/0x110 fs/super.c:332 cleanup_mnt+0x490/0x520 fs/namespace.c:1186 task_work_run+0x246/0x300 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa73/0x26a0 kernel/exit.c:869 do_group_exit+0x202/0x2b0 kernel/exit.c:1019 __do_sys_exit_group kernel/exit.c:1030 [inline] __se_sys_exit_group kernel/exit.c:1028 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1028 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f763f3d9049 Code: Unable to access opcode bytes at 0x7f763f3d901f. RSP: 002b:00007ffe9b95ce28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f763f3d9049 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 00007f763f45b390 R08: ffffffffffffffb8 R09: 00000000000000a0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f763f45b390 R13: 0000000000000000 R14: 00007f763f45c100 R15: 00007f763f3a7330 The buggy address belongs to the physical page: page:ffffea0005858b40 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16162d flags: 0x57ff80000000000(node=1|zone=2|lastcpupid=0xfff) raw: 057ff80000000000 ffffea0005858b48 ffffea0005858b48 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner info is not present (never set?) Memory state around the buggy address: ffff88816162dc80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88816162dd00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff88816162dd80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88816162de00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88816162de80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================