From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 11 Sep 2023 14:57:33 +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 4.94.2) (envelope-from ) id 1qfgTu-00BViI-Uz for lore@lore.pengutronix.de; Mon, 11 Sep 2023 14:57:33 +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 1qfgTt-0007TQ-2k for lore@pengutronix.de; Mon, 11 Sep 2023 14:57:33 +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: MIME-Version:Message-Id:Date:Subject:To:From:Reply-To:Cc:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=9vuRALl3aWcfdWvNhyUinkNb7UZJ6rwemQKUM6+jI6U=; b=j0GOAi6R9qXOgqN+2nOYGWx64J k60BrStvjTxz2i5D0QT+r3Hp1oUGKTvaD6Xn1qznXJOzVWBbjqA1qh4KLazd7NgVwle22aH+BVM4E OS225omPAq8pzkvPHdrJCPr4Dl4J2MPqqMZLyZMBaBeCo8l64W7yMeeNa8XTHsvnLMpAdb7zVSQhf 6U4BhR6fGJt9Vwx+Nyhij1Df5GA2PQfx5YPSWbh5uJCcBR9W4iaJGmzkILdGJ16sm99e5+ZQPV43x 62BwdTFdIzXKFSxx0NF/u1+dLnpuBL4PZOeLdgr0o7Kk47OHRGWux1+DsWgld0wK9OEL8uunqsg3C ApcOuWJA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qfgSq-000XBu-0A; Mon, 11 Sep 2023 12:56:28 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qfgSl-000X9Y-2I for barebox@lists.infradead.org; Mon, 11 Sep 2023 12:56:26 +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 1qfgSk-0007A7-Ka for barebox@lists.infradead.org; Mon, 11 Sep 2023 14:56:22 +0200 Received: from [2a0a:edc0:0:1101:1d::54] (helo=dude05.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1qfgSk-005YTf-82 for barebox@lists.infradead.org; Mon, 11 Sep 2023 14:56:22 +0200 Received: from afa by dude05.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1qfgSj-00Bg1H-1r for barebox@lists.infradead.org; Mon, 11 Sep 2023 14:56:21 +0200 From: Ahmad Fatoum To: barebox@lists.infradead.org Date: Mon, 11 Sep 2023 14:56:15 +0200 Message-Id: <20230911125619.2782229-1-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230911_055623_763429_6B147969 X-CRM114-Status: UNSURE ( 6.30 ) 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=-4.9 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=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 0/4] KASan: print output directly to stderr 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) I recently hunted down a heap memory corruption and this was somewhat complicated by KASan and dump_stack() themselves allocating memory off the heap. This series switches them to directly write to the consoles associated with stderr, while skipping the log. Ahmad Fatoum (4): ARM: unwind: don't allocate while printing stack trace ARM64: backtrace: print stacktrace to stderr KASan: only print to stderr KASan: don't allocate memory while printing report arch/arm/lib32/unwind.c | 20 ++++++++++---------- arch/arm/lib64/stacktrace.c | 6 +++--- lib/kasan/generic.c | 2 -- lib/kasan/report.c | 22 +++++++++++----------- 4 files changed, 24 insertions(+), 26 deletions(-) -- 2.39.2