Date: Wed, 23 Jul 2008 16:19:16 -0500 (CDT) From: "Sean C. Farley" <scf@FreeBSD.org> To: Chagin Dmitry <chagin.dmitry@gmail.com> Cc: Roman Divacky <rdivacky@FreeBSD.org>, freebsd-emulation@FreeBSD.org Subject: Re: kern/122318 (CMake core dumping, chroot exiting) Message-ID: <alpine.BSF.1.10.0807231616570.12600@thor.farley.org> In-Reply-To: <alpine.BSF.1.10.0807240016340.28898@ora.chd.net> References: <alpine.BSF.1.10.0807231236140.12600@thor.farley.org> <20080723184450.GA25356@freebsd.org> <alpine.BSF.1.10.0807231459030.12600@thor.farley.org> <alpine.BSF.1.10.0807240016340.28898@ora.chd.net>
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On Thu, 24 Jul 2008, Chagin Dmitry wrote: > On Wed, 23 Jul 2008, Sean C. Farley wrote: >> On Wed, 23 Jul 2008, Roman Divacky wrote: >>> On Wed, Jul 23, 2008 at 12:50:51PM -0500, Sean C. Farley wrote: >>>> I am seeing if anyone has any insight on this PR (kern/122318[1]). >>>> It would be nice to once again build using cmake within a Linux >>>> chroot. :) >>>> >>>> Basically, the bug is that not only that cmake is dumping core; it >>>> is also forcing the user out of the chroot environment. Here is >>>> the command used to start the chroot: >>>> /compat/linux/usr/sbin/chroot <chroot path> su - <build user> >>>> >>>> 1. http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/122318 >>> >>> looking at the trace you provided I guess this is what's going on: >>> >>> cmake forks/execs gcc and waits to be notified about the success of >>> the command it tried, the notification comes (the SIGCHLD) the >>> handler tries do something and then returns and now something is >>> wrong and it receives the SIGSEGV.. >>> >>> or am I wrong and linux_ktrace does not translate signals and the >>> SIGCHLD is in fact SIGTSTP? >>> >>> what is the fd 3 and 4? can you provide full ktrace.out? >> >> I have the full output of the execution here using ktrace -d: >> http://www.farley.org/freebsd/tmp/cmake-kdump.txt > > hi! > > Please, can you run ktrace with -i flag? > > thnx! No problem. Same URL. The countless meetings this week are destroying my mind; I was thinking -d did what -i actually does. :) Sean -- scf@FreeBSD.org
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