UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
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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 165 at addr ffff8880a538581a by task syz-executor.3/12240

CPU: 0 PID: 12240 Comm: syz-executor.3 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_slow+0x246/0x4a0 fs/namei.c:1672
 lookup_slow fs/namei.c:1689 [inline]
 walk_component+0x7ac/0xda0 fs/namei.c:1811
 lookup_last fs/namei.c:2274 [inline]
 path_lookupat+0x1ff/0x8d0 fs/namei.c:2319
 filename_lookup+0x1ac/0x5a0 fs/namei.c:2349
 user_path include/linux/namei.h:62 [inline]
 do_mount+0x147/0x2f50 fs/namespace.c:2762
 ksys_mount+0xcf/0x130 fs/namespace.c:3038
 __do_sys_mount fs/namespace.c:3052 [inline]
 __se_sys_mount fs/namespace.c:3049 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3049
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f07567250d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0754c97168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0756844f80 RCX: 00007f07567250d9
RDX: 0000000020000200 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007f0756780ae9 R08: 00000000200004c0 R09: 0000000000000000
R10: 0000000000020000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeb7c532af R14: 00007f0754c97300 R15: 0000000000022000

Allocated by task 12240:
 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_slow+0x246/0x4a0 fs/namei.c:1672
 lookup_slow fs/namei.c:1689 [inline]
 walk_component+0x7ac/0xda0 fs/namei.c:1811
 lookup_last fs/namei.c:2274 [inline]
 path_lookupat+0x1ff/0x8d0 fs/namei.c:2319
 filename_lookup+0x1ac/0x5a0 fs/namei.c:2349
 user_path include/linux/namei.h:62 [inline]
 do_mount+0x147/0x2f50 fs/namespace.c:2762
 ksys_mount+0xcf/0x130 fs/namespace.c:3038
 __do_sys_mount fs/namespace.c:3052 [inline]
 __se_sys_mount fs/namespace.c:3049 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3049
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 8653:
 __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 ffff8880a53857c0
 which belongs to the cache kmalloc-256 of size 256
The buggy address is located 90 bytes inside of
 256-byte region [ffff8880a53857c0, ffff8880a53858c0)
The buggy address belongs to the page:
page:ffffea000294e140 count:1 mapcount:0 mapping:ffff88813bff07c0 index:0x0
flags: 0xfff00000000100(slab)
raw: 00fff00000000100 ffffea000291dc88 ffffea00028c0d48 ffff88813bff07c0
raw: 0000000000000000 ffff8880a5385040 000000010000000c 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880a5385780: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
 ffff8880a5385800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880a5385880: 00 00 00 00 00 00 00 06 fc fc fc fc fc fc fc fc
                                        ^
 ffff8880a5385900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8880a5385980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 06
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