From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 13 Apr 2026 16:36:27 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1wCIOp-00BkQ8-06 for lore@lore.pengutronix.de; Mon, 13 Apr 2026 16:36:27 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1wCIOo-0000ee-GX for lore@pengutronix.de; Mon, 13 Apr 2026 16:36:26 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:Date:Message-Id:Subject:References:In-Reply-To:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ZTh3ULwA3VAOwOLl06omRmUhypIROEXL+u/Ps+gSBqA=; b=JxhBTMZEaP9KX1aidQmpkkYRc7 apS+3VX9etMVTXZJZoSSVhIF9VhCE4BujCvdkRCjZuKb5OXz2raZS4Q8ORZxxA6AMZW/5h3y44X/s lbUh76JG6KoSkC0Khf3/8osiRP+iXlCpzr8J5EU0BiNLXIXx1QpoYseL96+58BOQnMdr6i+BmFVtm tiBVm+Ez2Fl7E2KSM0QzZpbrnOqcIaYJvoAOG825hoxbMJdG+teJlq6DomXhlsx9JzCgmn80VetcR jtwjMuMyATgrr9UnuSKUNKYZcpNZFUkSWT7/oNfB3ezSkkMp0yTmoPYbNz3qC0iHybvr1WDMviQoT 23S8fb+w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wCIOI-0000000FsNi-364t; Mon, 13 Apr 2026 14:35:54 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wCIOF-0000000FsNP-0pKO for barebox@lists.infradead.org; Mon, 13 Apr 2026 14:35:52 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1wCIOD-0000a4-AQ; Mon, 13 Apr 2026 16:35:49 +0200 Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1wCIOC-005Bl7-36; Mon, 13 Apr 2026 16:35:48 +0200 Received: from [::1] (helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.98.2) (envelope-from ) id 1wCIOC-0000000EzEM-3mdT; Mon, 13 Apr 2026 16:35:48 +0200 From: Sascha Hauer To: barebox@lists.infradead.org, Ahmad Fatoum Cc: "Claude Opus 4.6" In-Reply-To: <20260323071738.4005127-1-a.fatoum@barebox.org> References: <20260323071738.4005127-1-a.fatoum@barebox.org> Message-Id: <177609094889.3571925.9430359342195933849.b4-ty@pengutronix.de> Date: Mon, 13 Apr 2026 16:35:48 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.14.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260413_073551_249364_23E3C053 X-CRM114-Status: UNSURE ( 6.61 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.2 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.2 Subject: Re: [PATCH] x86: fix initjmp storing base pointer at wrong address X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) On Mon, 23 Mar 2026 08:17:28 +0100, Ahmad Fatoum wrote: > initjmp was writing zero to 8(%edx), which is func + 8 (corrupting > memory at the function pointer address), instead of 8(%eax), which is > the __ebp (base pointer) slot in the jmp_buf. When longjmp later > restored the buffer, it would load uninitialized data into %ebp. > > With regparm(3), the arguments are passed as: > %eax = jmp_buf, %edx = func, %ecx = stack_top > > [...] Applied, thanks! [1/1] x86: fix initjmp storing base pointer at wrong address https://git.pengutronix.de/cgit/barebox/commit/?id=29f6d89ef50b (link may not be stable) Best regards, -- Sascha Hauer