UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/17 09:39 (1000)
UDF-fs: warning (device loop4): udf_load_vrs: No VRS found
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BUG: KASAN: slab-out-of-bounds in udf_get_fileident+0x233/0x250 fs/udf/directory.c:176
Read of size 2 at addr ffff8880944805fc by task syz-executor.0/28631

CPU: 0 PID: 28631 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 mm/kasan/report.c:412 [inline]
 __asan_report_load_n_noabort+0x8b/0xa0 mm/kasan/report.c:443
 udf_get_fileident+0x233/0x250 fs/udf/directory.c:176
 udf_fileident_read+0x550/0x1930 fs/udf/directory.c:37
 udf_readdir+0x559/0x1350 fs/udf/dir.c:129
 iterate_dir+0x473/0x5c0 fs/readdir.c:51
 __do_sys_getdents fs/readdir.c:271 [inline]
 __se_sys_getdents+0x175/0x2d0 fs/readdir.c:252
UDF-fs: Scanning with blocksize 512 failed
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f6cbb858189
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:00007f6cb9dca168 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007f6cbb977f80 RCX: 00007f6cbb858189
RDX: 0000000000000018 RSI: 0000000020000200 RDI: 0000000000000003
RBP: 00007f6cbb8b3b01 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff0c04502f R14: 00007f6cb9dca300 R15: 0000000000022000

Allocated by task 28631:
 __do_kmalloc mm/slab.c:3727 [inline]
 __kmalloc+0x15a/0x3c0 mm/slab.c:3736
 kmalloc include/linux/slab.h:520 [inline]
 udf_alloc_i_data+0x1f/0x70 fs/udf/inode.c:1601
 udf_read_inode fs/udf/inode.c:1408 [inline]
 __udf_iget+0x24dd/0x31a0 fs/udf/inode.c:1872
 udf_iget fs/udf/udfdecl.h:155 [inline]
 udf_lookup fs/udf/namei.c:334 [inline]
 udf_lookup+0x212/0x270 fs/udf/namei.c:296
 lookup_open+0x698/0x1a20 fs/namei.c:3214
 do_last fs/namei.c:3327 [inline]
 path_openat+0x1804/0x2df0 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 9:
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcc/0x210 mm/slab.c:3822
 snmp6_free_dev net/ipv6/addrconf_core.c:200 [inline]
 in6_dev_finish_destroy_rcu+0x35/0xa0 net/ipv6/addrconf_core.c:209
 __rcu_reclaim kernel/rcu/rcu.h:236 [inline]
 rcu_do_batch kernel/rcu/tree.c:2584 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline]
 rcu_process_callbacks+0x8ff/0x18b0 kernel/rcu/tree.c:2881
 __do_softirq+0x265/0x980 kernel/softirq.c:292

The buggy address belongs to the object at ffff8880944806c0
 which belongs to the cache kmalloc-4096 of size 4096
The buggy address is located 196 bytes to the left of
 4096-byte region [ffff8880944806c0, ffff8880944816c0)
The buggy address belongs to the page:
page:ffffea0002512000 count:1 mapcount:0 mapping:ffff88813bff0dc0 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffffea00027a2608 ffffea000278a408 ffff88813bff0dc0
raw: 0000000000000000 ffff8880944806c0 0000000100000001 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888094480480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888094480500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888094480580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                                ^
 ffff888094480600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888094480680: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
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