vxfs: WRONG superblock magic 00000008 at 1
==================================================================
BUG: KASAN: null-ptr-deref in memcpy include/linux/string.h:372 [inline]
BUG: KASAN: null-ptr-deref in llcp_sock_getname+0x38c/0x580 net/nfc/llcp_sock.c:532
Read of size 49 at addr           (null) by task syz-executor.5/10250

CPU: 1 PID: 10250 Comm: syz-executor.5 Not tainted 4.14.221-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 kasan_report_error.cold+0x144/0x191 mm/kasan/report.c:349
 kasan_report+0x6f/0x80 mm/kasan/report.c:409
 memcpy+0x20/0x50 mm/kasan/kasan.c:302
 memcpy include/linux/string.h:372 [inline]
 llcp_sock_getname+0x38c/0x580 net/nfc/llcp_sock.c:532
 sock_getsockopt+0xcd6/0x1a20 net/core/sock.c:1276
 SYSC_getsockopt net/socket.c:1892 [inline]
 SyS_getsockopt+0x18e/0x1c0 net/socket.c:1878
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x465ef9
RSP: 002b:00007f5314a76188 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465ef9
RDX: 000000000000001c RSI: 0000000000000001 RDI: 0000000000000008
RBP: 00000000004bcd1c R08: 00000000200001c0 R09: 0000000000000000
R10: 0000000020000440 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffeacb1810f R14: 00007f5314a76300 R15: 0000000000022000
==================================================================
vxfs: WRONG superblock magic 00000000 at 8