From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 7E20C393742B; Sun, 15 Mar 2020 10:39:17 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 7E20C393742B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1584268757; bh=EgKF4Jt/e/1KOg+Vmk/zMt9ukehovHwXs9qdaMDsHwo=; h=From:To:Subject:Date:In-Reply-To:References:From; b=GXzEt3HZg6OXOXBD3fSVNNyspEHlfp/V0uOPoGyivNqFwumqmq+OEDD0Z+rdLQUr7 OGaw7hMN9qh3ZJ9FElKgqVJRFP5I3UEyu8Az5Nsj0KrvNfwWhEqRGEh+AhcqB69VaQ FZhmK9j+Ulvo+HPkMnzqkN1XibMo+JvnmBIFVAGY= From: "fw at deneb dot enyo.de" To: glibc-bugs@sourceware.org Subject: [Bug dynamic-link/25680] ifuncmain9picstatic and ifuncmain9picstatic crash in IFUNC resolver due to stack canary (--enable-stack-protector=all) Date: Sun, 15 Mar 2020 10:39:17 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: dynamic-link X-Bugzilla-Version: 2.31 X-Bugzilla-Keywords: X-Bugzilla-Severity: minor X-Bugzilla-Who: fw at deneb dot enyo.de X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: security- X-Bugzilla-Changed-Fields: priority flagtypes.name bug_severity cc 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: Sun, 15 Mar 2020 10:39:17 -0000 https://sourceware.org/bugzilla/show_bug.cgi?id=3D25680 Florian Weimer changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P2 |P3 Flags| |security- Severity|normal |minor CC| |fw at deneb dot enyo.de --- Comment #2 from Florian Weimer --- You should not use --enable-stack-protector=3Dall, but --enable-stack-protector=3Dstrong. =E2=80=9Call=E2=80=9D is very unlikely = to add additional protection. If you do that, the IFUNC resolver will not be instrumented (because it has no local addressable variables, so no stack buffer overflow= is possible), so the bug goes away. I'm not sure if we can or should order the startup sequence for statically linked binaries differently, so I'm not closing this bug. --=20 You are receiving this mail because: You are on the CC list for the bug.=