Date: Wed, 15 Jun 2011 10:24:46 -0400 From: Eric McCorkle <eric@shadowsun.net> To: freebsd-current@freebsd.org Subject: Re: problems with cvsup on FreeBSD 9 snapshot 201101 Message-ID: <4DF8C0AE.4090501@shadowsun.net> In-Reply-To: <814C9E9472FDCC40AAC3FC95A2D67E3B0BD8F752@msx3.exchange.alogis.com> References: <814C9E9472FDCC40AAC3FC95A2D67E3B0BD8F752@msx3.exchange.alogis.com>
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On 6/15/11 8:23 AM, Holger Kipp wrote: > Dear all, > > I had installed FreeBSD 9 amd64 from snapshot (ISO-image) located here: > ftp://ftp.freebsd.org/pub/FreeBSD/snapshots/201101/FreeBSD-9.0-CURRENT-201101-amd64-dvd1.iso > > > Today I wanted to cvsup to a later date to upgrade to ZFS v28 > and compiled port /usr/ports/net/cvsup-without-gui without problems. > > Starting freshly compiled cvsup then gives me > > "Illegal Instruction" > > This error seems to be identical to > http://lists.freebsd.org/pipermail/freebsd-current/2010-September/020083.html > I've gotten the same problem, and managed to diagnose it. The problem actually isn't an illegal instruction, but a stack misalignment. If you load it in gdb, it will die with SIGSEGV somewhere in libc.so.7, on a callq instruction. This is because callq needs the stack to be 16-byte aligned, and it's not for some reason. As for why it's not aligned, I don't know. -- Eric McCorkle Computer Science Ph.D Student, University of Massachusetts Research Intern, IBM Research
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