UDF-fs: error (device loop0): udf_read_inode: (ino 1440) failed !bh UDF-fs: error (device loop0): udf_read_inode: (ino 1440) failed !bh ================================================================== BUG: KASAN: slab-out-of-bounds in crc_itu_t+0x1f5/0x280 lib/crc-itu-t.c:60 Read of size 1 at addr ffff88807d711100 by task syz-executor.0/4511 CPU: 1 PID: 4511 Comm: syz-executor.0 Not tainted 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 print_address_description+0x60/0x2d0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0xdf/0x130 mm/kasan/report.c:451 crc_itu_t+0x1f5/0x280 lib/crc-itu-t.c:60 udf_finalize_lvid fs/udf/super.c:2048 [inline] udf_sync_fs+0x194/0x350 fs/udf/super.c:2404 sync_filesystem+0xe6/0x220 fs/sync.c:56 generic_shutdown_super+0x6b/0x300 fs/super.c:448 kill_block_super+0x7c/0xe0 fs/super.c:1427 deactivate_locked_super+0x93/0xf0 fs/super.c:335 cleanup_mnt+0x418/0x4d0 fs/namespace.c:1139 task_work_run+0x125/0x1a0 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0x61e/0x20a0 kernel/exit.c:883 do_group_exit+0x12e/0x300 kernel/exit.c:997 __do_sys_exit_group kernel/exit.c:1008 [inline] __se_sys_exit_group kernel/exit.c:1006 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1006 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7ff5cfb28ea9 Code: Unable to access opcode bytes at RIP 0x7ff5cfb28e7f. RSP: 002b:00007ffce7851e38 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007ff5cfb743de RCX: 00007ff5cfb28ea9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000005 R08: 00007ffce784fbd7 R09: 00007ffce78530f0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffce78530f0 R13: 00007ff5cfb743b9 R14: 00000000000126e4 R15: 0000000000000006 Allocated by task 3851: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x9c/0xd0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x100/0x290 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:725 [inline] alloc_uid+0x156/0x550 kernel/user.c:199 set_user kernel/sys.c:471 [inline] __sys_setuid+0x1df/0x620 kernel/sys.c:616 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff88807d711000 which belongs to the cache uid_cache of size 256 The buggy address is located 0 bytes to the right of 256-byte region [ffff88807d711000, ffff88807d711100) The buggy address belongs to the page: page:ffffea0001f5c440 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88807d711280 pfn:0x7d711 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 0000000000000000 dead000000000122 ffff88814458f780 raw: ffff88807d711280 00000000800c000a 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 3851, ts 26543426220, free_ts 26432208899 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5474 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xc0/0x4b0 mm/slub.c:1975 ___slab_alloc+0x81e/0xdf0 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x195/0x290 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:725 [inline] alloc_uid+0x156/0x550 kernel/user.c:199 set_user kernel/sys.c:471 [inline] __sys_setuid+0x1df/0x620 kernel/sys.c:616 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317 free_unref_page_list+0x122/0x7e0 mm/page_alloc.c:3433 release_pages+0x184b/0x1bb0 mm/swap.c:963 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline] tlb_flush_mmu_free mm/mmu_gather.c:240 [inline] tlb_flush_mmu mm/mmu_gather.c:247 [inline] tlb_finish_mmu+0x164/0x2e0 mm/mmu_gather.c:338 exit_mmap+0x3a6/0x5f0 mm/mmap.c:3214 __mmput+0x115/0x3b0 kernel/fork.c:1127 exit_mm+0x567/0x6c0 kernel/exit.c:550 do_exit+0x5a1/0x20a0 kernel/exit.c:870 do_group_exit+0x12e/0x300 kernel/exit.c:997 __do_sys_exit_group kernel/exit.c:1008 [inline] __se_sys_exit_group kernel/exit.c:1006 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1006 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Memory state around the buggy address: ffff88807d711000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88807d711080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88807d711100: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb ^ ffff88807d711180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88807d711200: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================