On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. OCFS2: File system is now read-only. ================================================================== BUG: KASAN: slab-use-after-free in ocfs2_xattr_get_type fs/ocfs2/ocfs2_fs.h:1114 [inline] BUG: KASAN: slab-use-after-free in ocfs2_xattr_list_entries fs/ocfs2/xattr.c:934 [inline] BUG: KASAN: slab-use-after-free in ocfs2_xattr_ibody_list fs/ocfs2/xattr.c:982 [inline] BUG: KASAN: slab-use-after-free in ocfs2_listxattr+0x408/0xa74 fs/ocfs2/xattr.c:1044 Read of size 1 at addr ffff0000e1a9f007 by task syz.0.17/6725 CPU: 0 UID: 0 PID: 6725 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 print_address_description+0xa8/0x238 mm/kasan/report.c:378 print_report+0x68/0x84 mm/kasan/report.c:482 kasan_report+0xb0/0x110 mm/kasan/report.c:595 __asan_report_load1_noabort+0x20/0x2c mm/kasan/report_generic.c:378 ocfs2_xattr_get_type fs/ocfs2/ocfs2_fs.h:1114 [inline] ocfs2_xattr_list_entries fs/ocfs2/xattr.c:934 [inline] ocfs2_xattr_ibody_list fs/ocfs2/xattr.c:982 [inline] ocfs2_listxattr+0x408/0xa74 fs/ocfs2/xattr.c:1044 vfs_listxattr+0xc0/0x128 fs/xattr.c:493 ovl_listxattr+0xd8/0x49c fs/overlayfs/xattrs.c:123 vfs_listxattr fs/xattr.c:493 [inline] listxattr+0x10c/0x380 fs/xattr.c:924 filename_listxattr fs/xattr.c:958 [inline] path_listxattrat+0x15c/0x33c fs/xattr.c:988 __do_sys_listxattr fs/xattr.c:1001 [inline] __se_sys_listxattr fs/xattr.c:998 [inline] __arm64_sys_listxattr+0x84/0x98 fs/xattr.c:998 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Allocated by task 6520: kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:77 kasan_save_alloc_info+0x44/0x54 mm/kasan/generic.c:573 unpoison_slab_object mm/kasan/common.c:342 [inline] __kasan_slab_alloc+0x70/0x88 mm/kasan/common.c:368 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4970 [inline] slab_alloc_node mm/slub.c:5280 [inline] kmem_cache_alloc_noprof+0x338/0x648 mm/slub.c:5287 ptlock_alloc mm/memory.c:7284 [inline] ptlock_init include/linux/mm.h:3052 [inline] pmd_ptlock_init include/linux/mm.h:3185 [inline] pagetable_pmd_ctor include/linux/mm.h:3213 [inline] pmd_alloc_one_noprof include/asm-generic/pgalloc.h:145 [inline] __pmd_alloc+0xc0/0x860 mm/memory.c:6573 pmd_alloc include/linux/mm.h:2937 [inline] copy_pmd_range+0x5204/0x561c mm/memory.c:1370 copy_pud_range mm/memory.c:1426 [inline] copy_p4d_range mm/memory.c:1450 [inline] copy_page_range+0x6a4/0xde4 mm/memory.c:1538 dup_mmap+0xc68/0x171c mm/mmap.c:1834 dup_mm kernel/fork.c:1489 [inline] copy_mm+0x100/0x438 kernel/fork.c:1541 copy_process+0x1520/0x31e4 kernel/fork.c:2181 kernel_clone+0x1d8/0x84c kernel/fork.c:2609 __do_sys_clone kernel/fork.c:2750 [inline] __se_sys_clone kernel/fork.c:2718 [inline] __arm64_sys_clone+0x144/0x1a0 kernel/fork.c:2718 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Freed by task 23: kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:77 __kasan_save_free_info+0x58/0x70 mm/kasan/generic.c:587 kasan_save_free_info mm/kasan/kasan.h:406 [inline] poison_slab_object mm/kasan/common.c:252 [inline] __kasan_slab_free+0x74/0xa4 mm/kasan/common.c:284 kasan_slab_free include/linux/kasan.h:234 [inline] slab_free_hook mm/slub.c:2539 [inline] slab_free mm/slub.c:6630 [inline] kmem_cache_free+0x18c/0x6dc mm/slub.c:6740 ptlock_free+0x54/0x6c mm/memory.c:7294 pagetable_dtor include/linux/mm.h:3092 [inline] pagetable_dtor_free include/linux/mm.h:3099 [inline] __tlb_remove_table include/asm-generic/tlb.h:220 [inline] __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0xe0/0x384 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0x840/0x17d0 kernel/rcu/tree.c:2861 rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2878 handle_softirqs+0x328/0xc88 kernel/softirq.c:622 run_ksoftirqd+0x70/0xc0 kernel/softirq.c:1063 smpboot_thread_fn+0x4d8/0x9cc kernel/smpboot.c:160 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 The buggy address belongs to the object at ffff0000e1a9f000 which belongs to the cache page->ptl of size 64 The buggy address is located 7 bytes inside of freed 64-byte region [ffff0000e1a9f000, ffff0000e1a9f040) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff0000e1a9f720 pfn:0x121a9f anon flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) page_type: f5(slab) raw: 05ffc00000000000 ffff0000c000b780 0000000000000000 0000000000000001 raw: ffff0000e1a9f720 00000000002a0000 00000000f5000000 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000e1a9ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff0000e1a9ef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff0000e1a9f000: fa fb fb fb fb fb fb fb fc fc fc fc fa fb fb fb ^ ffff0000e1a9f080: fb fb fb fb fc fc fc fc fa fb fb fb fb fb fb fb ffff0000e1a9f100: fc fc fc fc fa fb fb fb fb fb fb fb fc fc fc fc 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