From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id D543DC433FE for ; Tue, 8 Nov 2022 09:42:07 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 753346B0073; Tue, 8 Nov 2022 04:42:07 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 6DC3D8E0001; Tue, 8 Nov 2022 04:42:07 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 57D176B0075; Tue, 8 Nov 2022 04:42:07 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 45D2F6B0073 for ; Tue, 8 Nov 2022 04:42:07 -0500 (EST) Received: from smtpin10.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 2625940880 for ; Tue, 8 Nov 2022 09:42:07 +0000 (UTC) X-FDA: 80109783894.10.CC63C9E Received: from relay3-d.mail.gandi.net (relay3-d.mail.gandi.net [217.70.183.195]) by imf20.hostedemail.com (Postfix) with ESMTP id 81C301C0004 for ; Tue, 8 Nov 2022 09:42:05 +0000 (UTC) Received: (Authenticated sender: clement.leger@bootlin.com) by mail.gandi.net (Postfix) with ESMTPSA id B325160015; Tue, 8 Nov 2022 09:42:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1667900523; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=1m/wXqz3m3Z8KOPX0vHt3R2SNBbCLX0ZfbTz9ZhUWoo=; b=WftMKg6BPP2Xu50Spqn4fVqH8JY5SYueG8mkI4sNRhCrcIymX/IkKiz7Snk79xhcQq3wmX bx0wVbb2MP5kIZ34j20Bkdm1FceSW3SoNSH8qpOkix14H70mWIxPSuO+l51ZeRBBXHWcRm 5ybD9wO7PzvD6dFvUAaj4Itl4BYy2qHs/Q3XmfMCC2QjzU57R7lbIiJ4Xtn1/ADhjHzJA2 ehrefxKU7Hj+LC595rHJzkVdKfYyZEm6KanGmErVIqSWsj2x00ceBakndAHQWGJ0vMqeDy jsRd4ueswMbaPhlj9E60Y91wG2SS5rwlT4pVCmHz9Xz20E4hUT863b+YhkNuYA== From: =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= To: Catalin Marinas , Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Thomas Petazzoni , Alexandre Belloni , =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= Subject: [PATCH] mm/kmemleak: use %pK to display kernel pointers in backtrace Date: Tue, 8 Nov 2022 10:43:22 +0100 Message-Id: <20221108094322.73492-1-clement.leger@bootlin.com> X-Mailer: git-send-email 2.38.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1667900525; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding:in-reply-to: references:dkim-signature; bh=1m/wXqz3m3Z8KOPX0vHt3R2SNBbCLX0ZfbTz9ZhUWoo=; b=i1OXYzZpFEjhEV6EWqYbt8zd5gN/JqcihKVbK/cnMba7HD43oGO5/xDLUkVJVDnmFdeE72 tmsSgWJV4BV0j+bsdu2FeElEImt5gVN83gmvrTpObK/Y6PtXFFtn2/EIEacL6bDQmy3d0u 80r0uDvAE8+zVSSoZ0DmrgMK9o3hi5E= ARC-Authentication-Results: i=1; imf20.hostedemail.com; dkim=pass header.d=bootlin.com header.s=gm1 header.b=WftMKg6B; spf=pass (imf20.hostedemail.com: domain of clement.leger@bootlin.com designates 217.70.183.195 as permitted sender) smtp.mailfrom=clement.leger@bootlin.com; dmarc=pass (policy=reject) header.from=bootlin.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1667900525; a=rsa-sha256; cv=none; b=hZQqTgnckJFLcuPCi4Mh1EXblnXyuuN4ge/ZyeIJzGDSIWNaGzw5Nq4xX6aEqVvf1MQV3p 9rb0gwYjZ3dFP73svL2H7jVfGPSt8L9llYA1ViEOK4eDB/wOeuzWhCcecdLzdtGmNs9T00 tICwzw1Zgrm53TyqPK434MAnfpm9wPI= Authentication-Results: imf20.hostedemail.com; dkim=pass header.d=bootlin.com header.s=gm1 header.b=WftMKg6B; spf=pass (imf20.hostedemail.com: domain of clement.leger@bootlin.com designates 217.70.183.195 as permitted sender) smtp.mailfrom=clement.leger@bootlin.com; dmarc=pass (policy=reject) header.from=bootlin.com X-Rspam-User: X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 81C301C0004 X-Stat-Signature: ugwjq399ryo6c8iskggfxznqdat979ok X-HE-Tag: 1667900525-17952 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Currently, %p is used to display kernel pointers in backtrace which result in a hashed value that is not usable to correlate the address for debug. Use %pK which will respect the kptr_restrict configuration value and thus allow to extract meaningful information from the backtrace. Signed-off-by: Clément Léger --- mm/kmemleak.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/kmemleak.c b/mm/kmemleak.c index 646e2979641f..b16be8891ae3 100644 --- a/mm/kmemleak.c +++ b/mm/kmemleak.c @@ -358,7 +358,7 @@ static void print_unreferenced(struct seq_file *seq, for (i = 0; i < object->trace_len; i++) { void *ptr = (void *)object->trace[i]; - warn_or_seq_printf(seq, " [<%p>] %pS\n", ptr, ptr); + warn_or_seq_printf(seq, " [<%pK>] %pS\n", ptr, ptr); } } -- 2.38.1