==================================================================
BUG: KASAN: use-after-free in ocfs2_match fs/ocfs2/dir.c:334 [inline]
BUG: KASAN: use-after-free in ocfs2_search_dirblock+0x22c/0x7c0 fs/ocfs2/dir.c:367
Read of size 1 at addr ffff0000faf2b8cb by task syz.3.235/8086

CPU: 0 UID: 0 PID: 8086 Comm: syz.3.235 Not tainted 6.13.0-rc3-syzkaller-g573067a5a685 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x198/0x538 mm/kasan/report.c:489
 kasan_report+0xd8/0x138 mm/kasan/report.c:602
 __asan_report_load1_noabort+0x20/0x2c mm/kasan/report_generic.c:378
 ocfs2_match fs/ocfs2/dir.c:334 [inline]
 ocfs2_search_dirblock+0x22c/0x7c0 fs/ocfs2/dir.c:367
 ocfs2_find_entry_id fs/ocfs2/dir.c:414 [inline]
 ocfs2_find_entry+0xe48/0x243c fs/ocfs2/dir.c:1078
 ocfs2_find_files_on_disk+0x11c/0x3e8 fs/ocfs2/dir.c:1981
 ocfs2_lookup_ino_from_name+0xb8/0x1d4 fs/ocfs2/dir.c:2003
 ocfs2_lookup+0x28c/0xb34 fs/ocfs2/namei.c:122
 lookup_open fs/namei.c:3627 [inline]
 open_last_lookups fs/namei.c:3748 [inline]
 path_openat+0xf7c/0x2b14 fs/namei.c:3984
 do_filp_open+0x1e8/0x404 fs/namei.c:4014
 do_sys_openat2+0x124/0x1b8 fs/open.c:1402
 do_sys_open fs/open.c:1417 [inline]
 __do_sys_openat fs/open.c:1433 [inline]
 __se_sys_openat fs/open.c:1428 [inline]
 __arm64_sys_openat+0x1f0/0x240 fs/open.c:1428
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 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+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xd0 pfn:0x13af2b
flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000000000 fffffdffc3ebcb08 fffffdffc3ebca88 0000000000000000
raw: 00000000000000d0 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000faf2b780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff0000faf2b800: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff0000faf2b880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                              ^
 ffff0000faf2b900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff0000faf2b980: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
OCFS2: ERROR (device loop3): int ocfs2_validate_gd_self(struct super_block *, struct buffer_head *, int): Group descriptor #0 has bad signature 
On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted.
OCFS2: File system is now read-only.
(syz.3.235,8086,1):ocfs2_search_chain:1814 ERROR: status = -30
(syz.3.235,8086,1):ocfs2_search_chain:1926 ERROR: status = -30
(syz.3.235,8086,1):ocfs2_claim_suballoc_bits:1995 ERROR: status = -30
(syz.3.235,8086,1):ocfs2_claim_suballoc_bits:2038 ERROR: status = -30
(syz.3.235,8086,1):ocfs2_claim_metadata:2063 ERROR: status = -30
(syz.3.235,8086,1):ocfs2_claim_metadata:2076 ERROR: status = -30
(syz.3.235,8086,1):ocfs2_create_xattr_block:2887 ERROR: status = -30
(syz.3.235,8086,1):ocfs2_xattr_block_set:2968 ERROR: status = -30
(syz.3.235,8086,1):ocfs2_mknod:422 ERROR: status = -30
OCFS2: ERROR (device loop3): int ocfs2_validate_gd_parent(struct super_block *, struct ocfs2_dinode *, struct buffer_head *, int): Group descriptor #17056 has bad parent pointer (0, expected 74)
On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted.
(syz.3.235,8086,1):_ocfs2_free_suballoc_bits:2553 ERROR: status = -30
(syz.3.235,8086,1):ocfs2_remove_inode:699 ERROR: status = -30
(syz.3.235,8086,1):ocfs2_wipe_inode:821 ERROR: status = -30
(syz.3.235,8086,1):ocfs2_delete_inode:1082 ERROR: status = -30
(syz.3.235,8086,1):ocfs2_mknod:502 ERROR: status = -30
(syz.3.235,8086,1):ocfs2_create:676 ERROR: status = -30