Folks, I have a situation that happens about once a week and causes a segfault on ATS (5.0.1). The stack trace always shows Ptr<IOBufferBlock>::operator= and the last function called, and digging a bit I found that this situation happens when, in HttpTunnel::tunnel_run I have two producers, the first one reading from the cache and a second from the plugin. The cache producer has a non-NULL vc, but has a NULL buffer_start, so when MIOBuffer::clone_reader is called to clone it, the system dies.
I found the URL that led to the last segfault and repetead it thousands of times using curl, without any problems, yet, about once a week we have this same issue, so I think its a run condition, but have no proof of it. Have you guys ever seen something like this and if not, do you have any idea how could it be that a cache producer would have a NULL buffer_start? The full stack trace, as well as more details can be found on http://pastebin.com/avMen1Cy Thanks in advance, Acácio Centeno Software Engineering Azion Technologies Porto Alegre, Brasil +55 51 3012 3005 | +55 51 8118 9947 Miami, USA +1 305 704 8816 Quaisquer informações contidas neste e-mail e anexos podem ser confidenciais e privilegiadas, protegidas por sigilo legal. Qualquer forma de utilização deste documento depende de autorização do emissor, sujeito as penalidades cabíveis. Any information in this e-mail and attachments may be confidential and privileged, protected by legal confidentiality. The use of this document require authorization by the issuer, subject to penalties.
