From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id A314B385AC32; Wed, 14 Jul 2021 06:15:11 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A314B385AC32 From: "siddhesh at sourceware dot org" To: glibc-bugs@sourceware.org Subject: [Bug malloc/20646] sysmalloc incorrectly fails with custom morecore function Date: Wed, 14 Jul 2021 06:15:11 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: malloc X-Bugzilla-Version: 2.19 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: siddhesh at sourceware dot org X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: WONTFIX X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: siddhesh at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: security- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: glibc-bugs@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Glibc-bugs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 14 Jul 2021 06:15:11 -0000 https://sourceware.org/bugzilla/show_bug.cgi?id=3D20646 --- Comment #8 from Siddhesh Poyarekar --- Malloc interposing (i.e. preloading a custom malloc implementation DSO that allocates memory using hugetlb pages) is the right way to do this because t= hese hooks in malloc have been a long time security hazard. Also as you've discovered, support for custom morecore is also broken in subtle ways, which makes it quite hard to maintain within glibc. --=20 You are receiving this mail because: You are on the CC list for the bug.=