From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with ESMTP id E311A6B012A for ; Wed, 13 May 2009 16:09:13 -0400 (EDT) Date: Wed, 13 May 2009 13:08:46 -0700 From: Andrew Morton Subject: Re: [Bugme-new] [Bug 13302] New: "bad pmd" on fork() of process with hugepage shared memory segments attached Message-Id: <20090513130846.d463cc1e.akpm@linux-foundation.org> In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: linux-mm@kvack.org Cc: bugzilla-daemon@bugzilla.kernel.org, bugme-daemon@bugzilla.kernel.org, Adam Litke , starlight@binnacle.cx List-ID: (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). (Please read this ^^^^ !) On Wed, 13 May 2009 19:54:10 GMT bugzilla-daemon@bugzilla.kernel.org wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=13302 > > Summary: "bad pmd" on fork() of process with hugepage shared > memory segments attached > Product: Memory Management > Version: 2.5 > Kernel Version: 2.6.29.1 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Other > AssignedTo: akpm@linux-foundation.org > ReportedBy: starlight@binnacle.cx > Regression: Yes > > > Kernel reports "bad pmd" errors when process with hugepage > shared memory segments attached executes fork() system call. > Using vfork() avoids the issue. > > Bug also appears in RHEL5 2.6.18-128.1.6.el5 and causes > leakage of huge pages. > > Bug does not appear in RHEL4 2.6.9-78.0.13.ELsmp. > > See bug 12134 for an example of the errors reported > by 'dmesg'. > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org