UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ================================================================== BUG: KASAN: use-after-free in crc_itu_t+0xd7/0xe0 lib/crc-itu-t.c:60 Read of size 1 at addr ffff888073ee8000 by task syz-executor909/5044 CPU: 1 PID: 5044 Comm: syz-executor909 Not tainted 6.5.0-rc4-next-20230804-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 crc_itu_t+0xd7/0xe0 lib/crc-itu-t.c:60 udf_finalize_lvid+0xf2/0x1f0 fs/udf/super.c:1984 udf_sync_fs+0xea/0x150 fs/udf/super.c:2340 sync_filesystem fs/sync.c:56 [inline] sync_filesystem+0x109/0x280 fs/sync.c:30 generic_shutdown_super+0x74/0x480 fs/super.c:472 kill_block_super+0x3b/0xc0 fs/super.c:1418 deactivate_locked_super+0x9a/0x170 fs/super.c:330 deactivate_super+0xde/0x100 fs/super.c:361 cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254 task_work_run+0x14d/0x240 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa99/0x2a20 kernel/exit.c:876 do_group_exit+0xd4/0x2a0 kernel/exit.c:1026 __do_sys_exit_group kernel/exit.c:1037 [inline] __se_sys_exit_group kernel/exit.c:1035 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1035 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f1613c80429 Code: Unable to access opcode bytes at 0x7f1613c803ff. RSP: 002b:00007ffd55392608 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f1613c80429 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 00007f1613d1d390 R08: ffffffffffffffb8 R09: 0000000000000000 R10: 0000000000000022 R11: 0000000000000246 R12: 00007f1613d1d390 R13: 0000000000000000 R14: 00007f1613d1f160 R15: 00007f1613c4da40 The buggy address belongs to the physical page: page:ffffea0001cfba00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x73ee8 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000000 ffffea0001cfba48 ffffea0001d14e88 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as freed page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 4913, tgid 4913 (sshd), ts 53014360261, free_ts 53181203288 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1567 prep_new_page mm/page_alloc.c:1574 [inline] get_page_from_freelist+0x10d7/0x31b0 mm/page_alloc.c:3253 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4509 __folio_alloc+0x16/0x40 mm/page_alloc.c:4541 vma_alloc_folio+0x156/0x890 mm/mempolicy.c:2253 do_anonymous_page mm/memory.c:4127 [inline] do_pte_missing mm/memory.c:3684 [inline] handle_pte_fault mm/memory.c:5013 [inline] __handle_mm_fault+0x253b/0x4180 mm/memory.c:5154 handle_mm_fault+0x47a/0xa00 mm/memory.c:5319 do_user_addr_fault+0x2e7/0xfe0 arch/x86/mm/fault.c:1342 handle_page_fault arch/x86/mm/fault.c:1483 [inline] exc_page_fault+0x5c/0xd0 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1158 [inline] free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2380 free_unref_page_list+0xe6/0xb30 mm/page_alloc.c:2521 release_pages+0x32a/0x14e0 mm/swap.c:1042 tlb_batch_pages_flush+0x9a/0x190 mm/mmu_gather.c:97 tlb_flush_mmu_free mm/mmu_gather.c:292 [inline] tlb_flush_mmu mm/mmu_gather.c:299 [inline] tlb_finish_mmu+0x14b/0x6f0 mm/mmu_gather.c:391 unmap_region.constprop.0+0x2e6/0x3b0 mm/mmap.c:2312 do_vmi_align_munmap+0xde3/0x15f0 mm/mmap.c:2546 do_vmi_munmap+0x20e/0x450 mm/mmap.c:2614 __vm_munmap+0x144/0x390 mm/mmap.c:2899 __do_sys_munmap mm/mmap.c:2916 [inline] __se_sys_munmap mm/mmap.c:2913 [inline] __x64_sys_munmap+0x62/0x80 mm/mmap.c:2913 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff888073ee7f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888073ee7f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888073ee8000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888073ee8080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888073ee8100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================