REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
REISERFS (device loop0): Using r5 hash to sort names
REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
==================================================================
BUG: KASAN: out-of-bounds in strlen+0x79/0x90 lib/string.c:539
Read of size 1 at addr ffff88808af3e9cc by task syz-executor304/8104

CPU: 0 PID: 8104 Comm: syz-executor304 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256
 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354
 kasan_report mm/kasan/report.c:412 [inline]
 __asan_report_load1_noabort+0x88/0x90 mm/kasan/report.c:430
 strlen+0x79/0x90 lib/string.c:539
 strlen include/linux/string.h:299 [inline]
 set_de_name_and_namelen fs/reiserfs/namei.c:82 [inline]
 search_by_entry_key+0x91e/0xf30 fs/reiserfs/namei.c:171
 reiserfs_readdir_inode+0x24b/0x13a0 fs/reiserfs/dir.c:98
 iterate_dir+0x473/0x5c0 fs/readdir.c:51
 ksys_getdents64+0x175/0x2b0 fs/readdir.c:357
 __do_sys_getdents64 fs/readdir.c:376 [inline]
 __se_sys_getdents64 fs/readdir.c:373 [inline]
 __x64_sys_getdents64+0x6f/0xb0 fs/readdir.c:373
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f75111a5799
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffee85a7438 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f75111a5799
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f7511165030 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000010e3 R11: 0000000000000246 R12: 00007f75111650c0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000

The buggy address belongs to the page:
page:ffffea00022bcf80 count:1 mapcount:1 mapping:ffff8880a33d9699 index:0x55ba5fd8a
flags: 0xfff00000040068(uptodate|lru|active|swapbacked)
raw: 00fff00000040068 ffffea00022bcf48 ffffea00022bcfc8 ffff8880a33d9699
raw: 000000055ba5fd8a 0000000000000000 0000000100000000 ffff8880b59f68c0
page dumped because: kasan: bad access detected
page->mem_cgroup:ffff8880b59f68c0

Memory state around the buggy address:
 ffff88808af3e880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88808af3e900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88808af3e980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                 ^
 ffff88808af3ea00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88808af3ea80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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