UDF-fs: error (device loop0): udf_read_tagged: tag version 0x0000 != 0x0002 || 0x0003, block 0 UDF-fs: warning (device loop0): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 512 failed UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ================================================================== BUG: KASAN: use-after-free in crc_itu_t+0x1d1/0x2a0 lib/crc-itu-t.c:60 Read of size 1 at addr ffff8880713dc000 by task syz-executor159/3543 CPU: 0 PID: 3543 Comm: syz-executor159 Not tainted 6.1.30-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 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 crc_itu_t+0x1d1/0x2a0 lib/crc-itu-t.c:60 udf_finalize_lvid fs/udf/super.c:2022 [inline] udf_sync_fs+0x1ce/0x380 fs/udf/super.c:2378 sync_filesystem+0xe8/0x220 fs/sync.c:56 generic_shutdown_super+0x6b/0x340 fs/super.c:474 kill_block_super+0x7a/0xe0 fs/super.c:1450 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+0x6fb/0x2300 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:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f32f6dca4e9 Code: Unable to access opcode bytes at 0x7f32f6dca4bf. RSP: 002b:00007ffd883df788 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f32f6e69450 RCX: 00007f32f6dca4e9 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffffffffffb8 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f32f6e69450 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 The buggy address belongs to the physical page: page:ffffea0001c4f700 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x713dc flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 ffffea0001c09f48 ffffea0001c4eb08 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 3542, tgid 3542 (sh), ts 64109654106, free_ts 64434310084 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2533 prep_new_page mm/page_alloc.c:2540 [inline] get_page_from_freelist+0x32ed/0x3480 mm/page_alloc.c:4292 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5559 __folio_alloc+0xf/0x30 mm/page_alloc.c:5591 vma_alloc_folio+0x486/0x990 mm/mempolicy.c:2241 alloc_page_vma include/linux/gfp.h:284 [inline] do_anonymous_page mm/memory.c:4123 [inline] handle_pte_fault mm/memory.c:4962 [inline] __handle_mm_fault mm/memory.c:5106 [inline] handle_mm_fault+0x2e85/0x5330 mm/memory.c:5227 faultin_page mm/gup.c:1009 [inline] __get_user_pages+0x4f3/0x1190 mm/gup.c:1233 __get_user_pages_locked mm/gup.c:1437 [inline] __get_user_pages_remote+0x1cd/0x750 mm/gup.c:2190 get_arg_page+0x147/0x370 fs/exec.c:220 copy_string_kernel+0x144/0x1e0 fs/exec.c:637 do_execveat_common+0x3ba/0x720 fs/exec.c:1916 do_execve fs/exec.c:2016 [inline] __do_sys_execve fs/exec.c:2092 [inline] __se_sys_execve fs/exec.c:2087 [inline] __x64_sys_execve+0x8e/0xa0 fs/exec.c:2087 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1460 [inline] free_pcp_prepare mm/page_alloc.c:1510 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3388 free_unref_page_list+0x107/0x810 mm/page_alloc.c:3530 release_pages+0x2836/0x2b40 mm/swap.c:1055 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline] tlb_flush_mmu_free mm/mmu_gather.c:254 [inline] tlb_flush_mmu+0xfc/0x210 mm/mmu_gather.c:261 tlb_finish_mmu+0xce/0x1f0 mm/mmu_gather.c:361 exit_mmap+0x3c3/0x9f0 mm/mmap.c:3139 __mmput+0x115/0x3c0 kernel/fork.c:1191 exit_mm+0x226/0x300 kernel/exit.c:563 do_exit+0x67e/0x2300 kernel/exit.c:856 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:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff8880713dbf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880713dbf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8880713dc000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff8880713dc080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff8880713dc100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================