Date: Sat, 22 Jul 2017 12:51:01 +0700 From: Eugene Grosbein <eugen@grosbein.net> To: Don Lewis <truckman@FreeBSD.org>, pz-freebsd-stable@ziemba.us Cc: freebsd-stable@FreeBSD.org Subject: Re: stable/11 r321349 crashing immediately Message-ID: <5972E7C5.6070102@grosbein.net> In-Reply-To: <201707220542.v6M5ggtP052112@gw.catspoiler.org> References: <201707220542.v6M5ggtP052112@gw.catspoiler.org>
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22.07.2017 12:42, Don Lewis wrote: > The double fault is a pretty good indication that you overflowed the > kernel stack. Having ~40 frames on the stack when the fault happened is > consistent with that. > > It looks like you are trying to execute a program from an NFS file > system that is exported by the same host. This isn't exactly optimal > ... > > Your best bet for a quick workaround for the stack overflow would be to > rebuild the kernel with a larger value of KSTACK_PAGES. You can find > teh default in /usr/src/sys/<arch>/conf/NOTES. > > It would probably be a good idea to compute the differences in the stack > pointer values between adjacent stack frames to see of any of them are > consuming an excessive amount of stack space. Also, there is https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219476 Eugene Grosbein
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