Re: BUG triggered in tcp_openreq_init_rwin most likely due to 13d3b1ebe2876

2017-07-17 Thread David Ahern
On 7/17/17 11:23 AM, Cong Wang wrote: > I bet req->rsk_listener is NULL, I guess we need the following fix: > > diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h > index 360c082e885c..d41d40ac3efd 100644 > --- a/include/linux/bpf-cgroup.h > +++ b/include/linux/bpf-cgroup.h > @@

Re: BUG triggered in tcp_openreq_init_rwin most likely due to 13d3b1ebe2876

2017-07-17 Thread Cong Wang
On Sun, Jul 16, 2017 at 4:47 PM, David Ahern wrote: > Hi: > > I am getting the following while testing IPv6 changes: > > [ 3904.250981] TCP: request_sock_TCPv6: Possible SYN flooding on port > 12345. Sending cookies. Check SNMP counters. > [ 3904.252862] >

Re: BUG triggered in tcp_openreq_init_rwin most likely due to 13d3b1ebe2876

2017-07-17 Thread Lawrence Brakmo
David, thank you for bringing this up. Sorry for the delay but I had been traveling. I will look into it. - Lawrence On 7/16/17, 4:47 PM, "David Ahern" wrote: Hi: I am getting the following while testing IPv6 changes: [ 3904.250981] TCP: request_sock_TCPv6: Possible SYN f

BUG triggered in tcp_openreq_init_rwin most likely due to 13d3b1ebe2876

2017-07-16 Thread David Ahern
Hi: I am getting the following while testing IPv6 changes: [ 3904.250981] TCP: request_sock_TCPv6: Possible SYN flooding on port 12345. Sending cookies. Check SNMP counters. [ 3904.252862] == [ 3904.254057] BUG: KASAN: null-ptr-dere