Date: Fri, 13 Nov 2020 10:51:43 -0800 From: Pete Wright <pete@nomadlogic.org> To: Patrick Mahan <plmahan@gmail.com> Cc: questions list <freebsd-questions@freebsd.org> Subject: Re: Helping understand cause of SIGSEGV Message-ID: <db901f77-cc64-46ee-0034-5f3d9005527a@nomadlogic.org> In-Reply-To: <46c6e046-8786-8142-0e4f-7c5ec407b3f4@nomadlogic.org> References: <c2eab4b0-b10b-9db3-1aa3-1f61689e24e8@nomadlogic.org> <CAFDHx1Jg_9k3oWU8X-WdP2CJX8hnBYgMz%2BvxwOs766JZcM3WRQ@mail.gmail.com> <0764e7ef-bd81-a6c5-47c4-7cd539a428f5@nomadlogic.org> <CAFDHx1K2-RWS4=xYtNUKMV3t_J7OKKPUE56f9JY45Q%2B0nH_TFA@mail.gmail.com> <f51dfaf6-46da-9cd8-ea37-b2733f5ad9bc@nomadlogic.org> <CAFDHx1JDyJq%2Bsepz1O186AeijTqyXP6AuQajsETY00j5eAsLXQ@mail.gmail.com> <46c6e046-8786-8142-0e4f-7c5ec407b3f4@nomadlogic.org>
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On 11/7/20 4:12 PM, Pete Wright wrote: > > > > thanks for your help on the Patrick - i suspect to make much more > progress i'll need someone from the fluent-bit team to take a closer > look as to what's happening. > Just to revive this thread, Artyom Davidov was nice enough to chime in on the freebsd bug i filed for this (https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250825) and we made some progress. it looks like the SIGSEGV is only reproducible on 12.x and newer FreeBSD builds - he is unable to reproduce the issue on his 11.4 system. I guess my next question I'll need to answer is what major changes happened b/w 11 and 12 that could trigger this error. At first I was wondering if it was an issue with llvm, but this port is built using gcc, so that helps narrow the gap a little bit. i reckon it's also good that we at least have a version of freebsd that is functional, so there is a reference point to start from. since it is looking like a threading issue perhaps i should start splunking around that area...unless others have some good hints. -pete -- Pete Wright pete@nomadlogic.org @nomadlogicLA
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