TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 10890 Comm: syz-executor.4 Not tainted 4.14.143 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88809849e080 task.stack: ffff88805f6f0000 RIP: 0010:do_tcp_sendpages+0x33d/0x18f0 net/ipv4/tcp.c:967 RSP: 0018:ffff88805f6f7898 EFLAGS: 00010202 RAX: 0000000000000010 RBX: 0000000000000000 RCX: ffffc9000be4d000 RDX: 0000000000001210 RSI: ffffffff8523f03b RDI: 0000000000000080 RBP: ffff88805f6f79c0 R08: ffff88809849e080 R09: 0000000000000001 R10: 0000000000000000 R11: ffff88809849e080 R12: 0000000000005555 R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88808f5dcd80 FS: 00007f49362a5700(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f42d534ddb8 CR3: 0000000097e48000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tls_push_sg+0x1e1/0x660 net/tls/tls_main.c:120 tls_push_record+0xa4a/0x1210 net/tls/tls_sw.c:287 tls_sw_sendmsg+0x8c9/0x1020 net/tls/tls_sw.c:501 inet_sendmsg+0x122/0x500 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xce/0x110 net/socket.c:656 SYSC_sendto+0x206/0x310 net/socket.c:1763 SyS_sendto+0x40/0x50 net/socket.c:1731 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4598e9 RSP: 002b:00007f49362a4c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00000000004598e9 RDX: ffffffffffffffc1 RSI: 0000000020000080 RDI: 0000000000000006 RBP: 000000000075bf20 R08: 0000000000000000 R09: fffffffffffffe5b R10: 0000000000000040 R11: 0000000000000246 R12: 00007f49362a56d4 R13: 00000000004c7880 R14: 00000000004dd188 R15: 00000000ffffffff Code: ff ff 48 0f 44 d8 e8 43 f2 38 fc 4d 85 e4 0f 84 9b 03 00 00 e8 35 f2 38 fc 48 8d bb 80 00 00 00 44 8b 65 a8 48 89 f8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 74 08 3c 03 0f 8e 85 11 00 00 44 2b a3 80 RIP: do_tcp_sendpages+0x33d/0x18f0 net/ipv4/tcp.c:967 RSP: ffff88805f6f7898 Dev loop3: unable to read RDB block 8 ---[ end trace 2c8788357c666899 ]--- loop3: unable to read partition table