REISERFS (device loop1): using 3.5.x disk format
REISERFS (device loop1): Created .reiserfs_priv - reserved for xattr storage.
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BUG: KASAN: use-after-free in bin_search_in_dir_item fs/reiserfs/namei.c:40 [inline]
BUG: KASAN: use-after-free in search_by_entry_key+0x45c/0xe88 fs/reiserfs/namei.c:165
Read of size 4 at addr ffff00011245d014 by task syz-executor.1/10068

CPU: 0 PID: 10068 Comm: syz-executor.1 Not tainted 6.1.82-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:284 [inline]
 print_report+0x174/0x4c0 mm/kasan/report.c:395
 kasan_report+0xd4/0x130 mm/kasan/report.c:495
 __asan_report_load_n_noabort+0x28/0x34 mm/kasan/report_generic.c:361
 bin_search_in_dir_item fs/reiserfs/namei.c:40 [inline]
 search_by_entry_key+0x45c/0xe88 fs/reiserfs/namei.c:165
 reiserfs_find_entry+0x288/0x149c fs/reiserfs/namei.c:322
 reiserfs_lookup+0x184/0x3c4 fs/reiserfs/namei.c:368
 lookup_open fs/namei.c:3462 [inline]
 open_last_lookups fs/namei.c:3552 [inline]
 path_openat+0xd3c/0x2548 fs/namei.c:3782
 do_filp_open+0x1bc/0x3cc fs/namei.c:3812
 do_sys_openat2+0x128/0x3d8 fs/open.c:1318
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

The buggy address belongs to the physical page:
page:0000000039b864e5 refcount:1 mapcount:0 mapping:000000003237ac31 index:0x14b pfn:0x15245d
memcg:ffff000134ddc000
aops:shmem_aops ino:540 dentry name:"memfd:syzkaller"
flags: 0x5ffd8000008001e(referenced|uptodate|dirty|lru|swapbacked|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffd8000008001e fffffc000472af08 fffffc0004777508 ffff0000dfeca2f8
raw: 000000000000014b 0000000000000000 00000001ffffffff ffff000134ddc000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff00011245cf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff00011245cf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff00011245d000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                         ^
 ffff00011245d080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff00011245d100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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