Date: Wed, 15 Jun 2011 14:59:36 +0000 From: Holger Kipp <Holger.Kipp@alogis.com> To: "freebsd-current@freebsd.org" <freebsd-current@freebsd.org> Subject: RE: problems with cvsup on FreeBSD 9 snapshot 201101 Message-ID: <814C9E9472FDCC40AAC3FC95A2D67E3B0BD8F8CB@msx3.exchange.alogis.com> In-Reply-To: <4DF8C0AE.4090501@shadowsun.net> References: <814C9E9472FDCC40AAC3FC95A2D67E3B0BD8F752@msx3.exchange.alogis.com>, <4DF8C0AE.4090501@shadowsun.net>
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Ah, ok. Do we have a compiler switch to force stack alignment to 16-Byte-boundaries= ? Otherwise I am really concerned that we might have similar wrong pieces o= f code lurking unnoticed in other binaries as well :-/ My cvsup binary is: # file /usr/local/bin/cvsup /usr/local/bin/cvsup: ELF 64-bit LSB executable, x86-64, version 1 (FreeBSD= ), dynamically linked (uses shared libs), for FreeBSD 9.0 (900029), strippe= d Best regards, Holger ________________________________________ From: owner-freebsd-current@freebsd.org [owner-freebsd-current@freebsd.org]= on behalf of Eric McCorkle [eric@shadowsun.net] Sent: 15 June 2011 16:24 To: freebsd-current@freebsd.org Subject: Re: problems with cvsup on FreeBSD 9 snapshot 201101 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-20= 1101-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 _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" -- Holger Kipp Diplom-Mathematiker Senior Consultant Tel. : +49 30 436 58 114 Fax. : +49 30 436 58 214 Mobil: +49 178 36 58 114 Email: holger.kipp@alogis.com alogis AG Alt-Moabit 90b D-10559 Berlin web : http://www.alogis.com ---------------------------------------------------------- alogis AG Sitz/Registergericht: Berlin/AG Charlottenburg, HRB 71484 Vorstand: Arne Friedrichs, Joern Samuelson Aufsichtsratsvorsitzender: Reinhard Mielke
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