From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26821 invoked by alias); 4 Oct 2012 12:31:54 -0000 Received: (qmail 26755 invoked by uid 48); 4 Oct 2012 12:31:34 -0000 From: "siddhesh at redhat dot com" To: glibc-bugs@sources.redhat.com Subject: [Bug nptl/13184] rwlocks can go into dead lock Date: Thu, 04 Oct 2012 12:31:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: nptl X-Bugzilla-Keywords: X-Bugzilla-Severity: critical X-Bugzilla-Who: siddhesh at redhat dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: drepper.fsp at gmail dot com X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: CC Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 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 X-SW-Source: 2012-10/txt/msg00047.txt.bz2 http://sourceware.org/bugzilla/show_bug.cgi?id=13184 Siddhesh Poyarekar changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |siddhesh at redhat dot com --- Comment #8 from Siddhesh Poyarekar 2012-10-04 12:31:31 UTC --- I don't have an Opteron 270 to test this on, but it looks like something that shouldn't happen, since the instruction you've 'locked' with your patch should already be isolated with lock.__data.__lock. If the patch actually works, then this might possibly even be a cpu bug that we're patching. If you can get someone from AMD to comment on this or give a rationale for why the bug appears and why your fix works, then please post the patch on libc-alpha for review. You may want to follow the checklist here for your patch submission: http://sourceware.org/glibc/wiki/Contribution%20checklist -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.