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BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:377 [inline]
BUG: KASAN: slab-out-of-bounds in udf_find_entry+0xa33/0x1070 fs/udf/namei.c:251
Write of size 105 at addr ffff8880b4125bd6 by task syz-executor.0/13269

CPU: 1 PID: 13269 Comm: syz-executor.0 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+0x8f/0xa0 mm/kasan/report.c:412
 memcpy+0x35/0x50 mm/kasan/kasan.c:303
 memcpy include/linux/string.h:377 [inline]
 udf_find_entry+0xa33/0x1070 fs/udf/namei.c:251
 udf_lookup fs/udf/namei.c:322 [inline]
 udf_lookup+0x156/0x270 fs/udf/namei.c:296
 lookup_open+0x698/0x1a20 fs/namei.c:3214
 do_last fs/namei.c:3327 [inline]
 path_openat+0x1094/0x2df0 fs/namei.c:3537
 do_filp_open+0x18c/0x3f0 fs/namei.c:3567
 do_sys_open+0x3b3/0x520 fs/open.c:1085
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f58fb373639
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f58f98c5168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f58fb494050 RCX: 00007f58fb373639
RDX: 000000000000275a RSI: 0000000020000140 RDI: ffffffffffffff9c
RBP: 00007f58fb3cea41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff7069b01f R14: 00007f58f98c5300 R15: 0000000000022000

Allocated by task 13269:
 kmem_cache_alloc_trace+0x12f/0x380 mm/slab.c:3625
 kmalloc include/linux/slab.h:515 [inline]
 udf_find_entry+0xa82/0x1070 fs/udf/namei.c:241
 udf_lookup fs/udf/namei.c:322 [inline]
 udf_lookup+0x156/0x270 fs/udf/namei.c:296
 lookup_open+0x698/0x1a20 fs/namei.c:3214
 do_last fs/namei.c:3327 [inline]
 path_openat+0x1094/0x2df0 fs/namei.c:3537
 do_filp_open+0x18c/0x3f0 fs/namei.c:3567
 do_sys_open+0x3b3/0x520 fs/open.c:1085
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 12369:
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcc/0x210 mm/slab.c:3822
 __do_execve_file+0x187a/0x2360 fs/exec.c:1862
 do_execveat_common fs/exec.c:1879 [inline]
 do_execve+0x35/0x50 fs/exec.c:1896
 call_usermodehelper_exec_async+0x50e/0x6a0 kernel/umh.c:116
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

The buggy address belongs to the object at ffff8880b4125b40
 which belongs to the cache kmalloc-256 of size 256
The buggy address is located 150 bytes inside of
 256-byte region [ffff8880b4125b40, ffff8880b4125c40)
The buggy address belongs to the page:
page:ffffea0002d04940 count:1 mapcount:0 mapping:ffff88813bff07c0 index:0xffff8880b4125640
flags: 0xfff00000000100(slab)
raw: 00fff00000000100 ffffea00025ff108 ffffea0002611f88 ffff88813bff07c0
raw: ffff8880b4125640 ffff8880b4125000 000000010000000a 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880b4125b00: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
 ffff8880b4125b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880b4125c00: 00 00 00 00 00 00 00 06 fc fc fc fc fc fc fc fc
                                        ^
 ffff8880b4125c80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880b4125d00: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc
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