BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 9ad63067 P4D 9ad63067 PUD 997a4067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 8820 Comm: syz-executor355 Not tainted 5.4.0-rc6-next-20191108 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:memcpy_erms+0x6/0x10 arch/x86/lib/memcpy_64.S:56 Code: 90 90 90 90 eb 1e 0f 1f 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 a4 c3 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 20 72 7e 40 38 fe RSP: 0018:ffff88809d04fd50 EFLAGS: 00010246 RAX: ffff88809d04fe12 RBX: ffff88809d04fe00 RCX: 000000000000002b RDX: 000000000000002b RSI: 0000000000000000 RDI: ffff88809d04fe12 RBP: ffff88809d04fd70 R08: 1ffff11013a09fc2 R09: ffffed1013a09fc8 R10: ffffed1013a09fc7 R11: ffff88809d04fe3c R12: 000000000000002b R13: ffff88809d04fe12 R14: 0000000000000000 R15: ffffffff8867b340 FS: 00000000021a4880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000009abb5000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: memcpy include/linux/string.h:425 [inline] llcp_sock_getname+0x358/0x460 net/nfc/llcp_sock.c:519 __sys_getpeername+0x12b/0x290 net/socket.c:1918 __do_sys_getpeername net/socket.c:1931 [inline] __se_sys_getpeername net/socket.c:1928 [inline] __x64_sys_getpeername+0x73/0xb0 net/socket.c:1928 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4412c9 Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffda7985958 EFLAGS: 00000246 ORIG_RAX: 0000000000000034 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004412c9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000012400 R08: 00000000004002c8 R09: 00000000004002c8 R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402040 R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: CR2: 0000000000000000