Date: Sun, 1 Nov 2009 13:17:41 +0000 From: "Robert N. M. Watson" <rwatson@FreeBSD.org> To: Matthias Apitz <guru@unixarea.de> Cc: kde-freebsd@kde.org, freebsd-current@FreeBSD.org Subject: Re: [kde-freebsd] after compiling x11/kde4 problems with /usr/local/bin/startkde (SOLVED) Message-ID: <8514BDB1-FB1B-4B7F-8050-ED01D446B07F@FreeBSD.org> In-Reply-To: <20091101130820.GA3658@current.Sisis.de> References: <20091030151754.GA5849@current.Sisis.de> <20091101072629.GA2334@current.Sisis.de> <alpine.BSF.2.00.0911010853050.2930@fledge.watson.org> <20091101103934.GA3004@current.Sisis.de> <alpine.BSF.2.00.0911011045020.2930@fledge.watson.org> <20091101130820.GA3658@current.Sisis.de>
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On 1 Nov 2009, at 13:08, Matthias Apitz wrote: >>> $ uname -a FreeBSD vm-azul.Sisis.de 9.0-CURRENT FreeBSD 9.0- >>> CURRENT #0 >>> r197801: Mon Oct 12 13:33:32 CEST 2009 >>> guru@vm-azul.Sisis.de:/usr/obj/usr/src/sys/GENERIC i386 >> >> Sounds like an upgrade should fix this -- if not, please let us >> know ASAP >> as it might be an issue for 8.0 as well. > > Robert, do you have an idea why this (with the same kernel/userland) > only shows up after installing the port x11/kde4? KDE uses some pre-linking techniques to reduce startup time for applications; I'm not sure what the current version of the code does exactly, but it wouldn't surprise me if it involves PIE executables, which were known to have problems with our null-mapping prevention until recent bug fixes to rtld. If the problem goes away with an upgrade to a new userspace/kernel, I wouldn't worry too much about it. We added the null-mapping prevention a few weeks ago, and later discovered it interacted badly with bugs in our handling of PIE in- kernel and in rtld. Most likely (if the problem goes away with an upgrade), you just ended up with a bad combination of the two that was resolved. Robert
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