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 X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B9110C433E0 for ; Tue, 9 Jun 2020 04:32:16 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 77615207F9 for ; Tue, 9 Jun 2020 04:32:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="iMt8cfJE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 77615207F9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 2166B6B00A8; Tue, 9 Jun 2020 00:32:16 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 1F09E6B00AA; Tue, 9 Jun 2020 00:32:16 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0B5CE6B00AB; Tue, 9 Jun 2020 00:32:16 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0055.hostedemail.com [216.40.44.55]) by kanga.kvack.org (Postfix) with ESMTP id DFBBA6B00A8 for ; Tue, 9 Jun 2020 00:32:15 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id A46251F1A for ; Tue, 9 Jun 2020 04:32:15 +0000 (UTC) X-FDA: 76908401430.21.dime80_5117fcf26dbf Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin21.hostedemail.com (Postfix) with ESMTP id 83DDD18044FCC for ; Tue, 9 Jun 2020 04:32:15 +0000 (UTC) X-HE-Tag: dime80_5117fcf26dbf X-Filterd-Recvd-Size: 2445 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf31.hostedemail.com (Postfix) with ESMTP for ; Tue, 9 Jun 2020 04:32:15 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1579F20812; Tue, 9 Jun 2020 04:32:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591677134; bh=GyY2nU1MCmn+qMoD9vK+aNzbZ/iFS+N/p/qfx+U6yME=; h=Date:From:To:Subject:In-Reply-To:From; b=iMt8cfJEldZ1pzp4b3U3vS0WCr7cBkGM/T1yU+60yUwPWTFtUXgWdQprahbaN2qYu uyvuSobDOdC77LsTEZZlY5/EaHpMQSQAwfCJd+7AvLd0hp7pCDl6A8KskoUlUia77S CahG22hpjSDpjn5RaHFlju5CKPYPSMbuLVv+SER8= Date: Mon, 08 Jun 2020 21:32:13 -0700 From: Andrew Morton To: akpm@linux-foundation.org, bp@alien8.de, dima@arista.com, hpa@zytor.com, linux-mm@kvack.org, mingo@redhat.com, mm-commits@vger.kernel.org, tglx@linutronix.de, torvalds@linux-foundation.org Subject: [patch 45/93] x86/amd_gart: print stacktrace for a leak with KERN_ERR Message-ID: <20200609043213.Ov2lIaOay%akpm@linux-foundation.org> In-Reply-To: <20200608212922.5b7fa74ca3f4e2444441b7f9@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Queue-Id: 83DDD18044FCC X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 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: From: Dmitry Safonov Subject: x86/amd_gart: print stacktrace for a leak with KERN_ERR It's under CONFIG_IOMMU_LEAK option which is enabled by debug config. Likely the backtrace is worth to be seen - so aligning with log level of error message in iommu_full(). Link: http://lkml.kernel.org/r/20200418201944.482088-46-dima@arista.com Signed-off-by: Dmitry Safonov Cc: Borislav Petkov Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Thomas Gleixner Signed-off-by: Andrew Morton --- arch/x86/kernel/amd_gart_64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/kernel/amd_gart_64.c~x86-amd_gart-print-stacktrace-for-a-leak-with-kern_err +++ a/arch/x86/kernel/amd_gart_64.c @@ -159,7 +159,7 @@ static void dump_leak(void) return; dump = 1; - show_stack(NULL, NULL); + show_stack_loglvl(NULL, NULL, KERN_ERR); debug_dma_dump_mappings(NULL); } #endif _