audit: type=1400 audit(1572318840.791:36): avc:  denied  { map } for  pid=6880 comm="syz-executor638" path="/root/syz-executor638725772" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
==================================================================
BUG: KASAN: null-ptr-deref in memcpy include/linux/string.h:347 [inline]
BUG: KASAN: null-ptr-deref in llcp_sock_getname+0x38f/0x4a0 net/nfc/llcp_sock.c:532
Read of size 1 at addr           (null) by task syz-executor638/6903

CPU: 1 PID: 6903 Comm: syz-executor638 Not tainted 4.14.150 #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+0x138/0x197 lib/dump_stack.c:53
 kasan_report_error mm/kasan/report.c:349 [inline]
 kasan_report mm/kasan/report.c:409 [inline]
 kasan_report.cold+0x127/0x2af mm/kasan/report.c:393
 check_memory_region_inline mm/kasan/kasan.c:260 [inline]
 check_memory_region+0x123/0x190 mm/kasan/kasan.c:267
 memcpy+0x24/0x50 mm/kasan/kasan.c:302
 memcpy include/linux/string.h:347 [inline]
 llcp_sock_getname+0x38f/0x4a0 net/nfc/llcp_sock.c:532
 SYSC_getpeername+0x120/0x270 net/socket.c:1715
 SyS_getpeername+0x24/0x30 net/socket.c:1699
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x441299
RSP: 002b:00007ffcf2d4ffe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000034
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441299
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000009ed9 R08: 00000000004002c8 R09: 00000000004002c8
R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402010
R13: 00000000004020a0 R14: 0000000000000000 R15: 0000000000000000
==================================================================
BUG: unable to handle kernel NULL pointer dereference at           (null)
IP: memcpy_erms+0x6/0x10 arch/x86/lib/memcpy_64.S:54
PGD 7ec31067 P4D 7ec31067 PUD 953a8067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 6928 Comm: syz-executor638 Tainted: G    B           4.14.150 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888081e8e080 task.stack: ffff88807fa68000
RIP: 0010:memcpy_erms+0x6/0x10 arch/x86/lib/memcpy_64.S:54
RSP: 0018:ffff88807fa6fd20 EFLAGS: 00010246
RAX: ffff88807fa6fe0a RBX: ffff88807fa6fdf8 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff88807fa6fe0a
RBP: ffff88807fa6fd40 R08: 1ffff1100ff4dfc1 R09: ffffed100ff4dfc2
R10: ffffed100ff4dfc1 R11: ffff88807fa6fe0a R12: 0000000000000001
R13: ffff88807fa6fe0a R14: 0000000000000000 R15: ffffffff87069c40
FS:  0000000000cec880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000096d1a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 memcpy include/linux/string.h:347 [inline]
 llcp_sock_getname+0x38f/0x4a0 net/nfc/llcp_sock.c:532
 SYSC_getpeername+0x120/0x270 net/socket.c:1715
 SyS_getpeername+0x24/0x30 net/socket.c:1699
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x441299
RSP: 002b:00007ffcf2d4ffe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000034
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441299
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000009f36 R08: 00000000004002c8 R09: 00000000004002c8
R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000402010
R13: 00000000004020a0 R14: 0000000000000000 R15: 0000000000000000
Code: 90 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 <f3> a4 c3 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 20 72 7e 40 38 
RIP: memcpy_erms+0x6/0x10 arch/x86/lib/memcpy_64.S:54 RSP: ffff88807fa6fd20
CR2: 0000000000000000
BUG: unable to handle kernel NULL pointer dereference at           (null)