From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26669 invoked by alias); 18 Aug 2013 03:46:49 -0000 Mailing-List: contact glibc-bugs-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: glibc-bugs-owner@sourceware.org Received: (qmail 26632 invoked by uid 48); 18 Aug 2013 03:46:48 -0000 From: "bob.eric.nelson at gmail dot com" To: glibc-bugs@sourceware.org Subject: [Bug libc/15845] glibc-2.18 (32-bit) segfault with i7-3770K CPU Date: Sun, 18 Aug 2013 03:46:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: libc X-Bugzilla-Version: 2.18 X-Bugzilla-Keywords: glibc_2.18 X-Bugzilla-Severity: normal X-Bugzilla-Who: bob.eric.nelson at gmail dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2013-08/txt/msg00075.txt.bz2 http://sourceware.org/bugzilla/show_bug.cgi?id=15845 --- Comment #2 from re_nelson --- Further exploration of the 32-bit glibc-2.18 segfault, this time using Arch Linux as the platform on the hardware cited in the initial post, revealed the following with "--host=i686-pc-linux-gnu" passed to the configure script. 1). Using "-O3" optimization is a fix for the segfault described in the post. In the attached tarball, see "strace_glibc-2.18-i686.ok" when the 32-bit acroread application is invoked with the library built with "-O3" optimzation. The program runs to completion with no errors. 2). With CFLAGS unset, which during the build default to "-O2", the segfault occurs as shown in "trace_glibc-2.18-i686.fail", also in the attached tarball. The trace also shows the kernel's general protection error at the end, taken from dmesg. -- You are receiving this mail because: You are on the CC list for the bug.