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BUG: KASAN: null-ptr-deref in memcpy include/linux/string.h:373 [inline]
BUG: KASAN: null-ptr-deref in llcp_sock_getname+0x347/0x440 net/nfc/llcp_sock.c:531
Read of size 1 at addr 0000000000000000 by task syz-executor.5/19690

CPU: 0 PID: 19690 Comm: syz-executor.5 Not tainted 4.19.133-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2fe lib/dump_stack.c:118
 kasan_report_error.cold+0x15b/0x1c7 mm/kasan/report.c:352
 kasan_report+0x8f/0x96 mm/kasan/report.c:412
 memcpy+0x20/0x50 mm/kasan/kasan.c:302
 memcpy include/linux/string.h:373 [inline]
 llcp_sock_getname+0x347/0x440 net/nfc/llcp_sock.c:531
 __sys_getpeername+0x10b/0x250 net/socket.c:1735
 __do_sys_getpeername net/socket.c:1748 [inline]
 __se_sys_getpeername net/socket.c:1745 [inline]
 __x64_sys_getpeername+0x6f/0xb0 net/socket.c:1745
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c1d9
Code: 8d b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 5b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f94c8b20c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000034
RAX: ffffffffffffffda RBX: 0000000000004080 RCX: 000000000045c1d9
RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 0000000000000006
RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffea8b11bff R14: 00007f94c8b219c0 R15: 000000000078bf0c
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