netlink: 40 bytes leftover after parsing attributes in process `syz-executor3'.
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
netlink: 40 bytes leftover after parsing attributes in process `syz-executor3'.
general protection fault: 0000 [#1] SMP KASAN
CPU: 1 PID: 10633 Comm: syz-executor2 Not tainted 4.18.0-rc3+ #122
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:tcp_zerocopy_receive net/ipv4/tcp.c:1792 [inline]
RIP: 0010:do_tcp_getsockopt.isra.43+0x2fa6/0x3c20 net/ipv4/tcp.c:3515
Code: 3c 03 0f 8e 46 08 00 00 89 9d 10 fd ff ff e8 71 af 14 fb 49 8d be 80 00 00 00 be ff ff 37 00 48 89 f8 48 c1 e6 2a 48 c1 e8 03 <0f> b6 04 30 84 c0 74 08 3c 03 0f 8e cd 06 00 00 48 8b 85 50 fc ff 
RSP: 0018:ffff880199407860 EFLAGS: 00010202
RAX: 0000000000000010 RBX: 0000000000000000 RCX: ffffc90006e3c000
RDX: 000000000000016e RSI: dffffc0000000000 RDI: 0000000000000080
RBP: ffff880199407c60 R08: ffff88019a49a480 R09: ffffed0039665677
R10: ffffed0039665677 R11: ffff8801cb32b3bf R12: 00000000ffffffff
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801994079b0
FS:  00007f6a8a853700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2bc23000 CR3: 00000001cf4b1000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 tcp_getsockopt+0xc1/0xe0 net/ipv4/tcp.c:3541
 sock_common_getsockopt+0x9a/0xe0 net/core/sock.c:3042
 __sys_getsockopt+0x1ad/0x390 net/socket.c:1948
 __do_sys_getsockopt net/socket.c:1959 [inline]
 __se_sys_getsockopt net/socket.c:1956 [inline]
 __x64_sys_getsockopt+0xbe/0x150 net/socket.c:1956
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455ab9
Code: 1d ba 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 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f6a8a852c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007f6a8a8536d4 RCX: 0000000000455ab9
RDX: 0000000000000023 RSI: 0000000000000006 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000020000040 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004c5280 R14: 00000000004ca810 R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace 76705465b1f568cb ]---
RIP: 0010:tcp_zerocopy_receive net/ipv4/tcp.c:1792 [inline]
RIP: 0010:do_tcp_getsockopt.isra.43+0x2fa6/0x3c20 net/ipv4/tcp.c:3515
Code: 3c 03 0f 8e 46 08 00 00 89 9d 10 fd ff ff e8 71 af 14 fb 49 8d be 80 00 00 00 be ff ff 37 00 48 89 f8 48 c1 e6 2a 48 c1 e8 03 <0f> b6 04 30 84 c0 74 08 3c 03 0f 8e cd 06 00 00 48 8b 85 50 fc ff 
RSP: 0018:ffff880199407860 EFLAGS: 00010202
RAX: 0000000000000010 RBX: 0000000000000000 RCX: ffffc90006e3c000
RDX: 000000000000016e RSI: dffffc0000000000 RDI: 0000000000000080
RBP: ffff880199407c60 R08: ffff88019a49a480 R09: ffffed0039665677
R10: ffffed0039665677 R11: ffff8801cb32b3bf R12: 00000000ffffffff
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801994079b0
FS:  00007f6a8a853700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2bc23000 CR3: 00000001cf4b1000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400