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=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 B248FC11F69 for ; Thu, 1 Jul 2021 14:11:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9D329613B7 for ; Thu, 1 Jul 2021 14:11:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232524AbhGAONa (ORCPT ); Thu, 1 Jul 2021 10:13:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57388 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232081AbhGAON3 (ORCPT ); Thu, 1 Jul 2021 10:13:29 -0400 Received: from mail-ot1-x331.google.com (mail-ot1-x331.google.com [IPv6:2607:f8b0:4864:20::331]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5C62BC061762 for ; Thu, 1 Jul 2021 07:10:59 -0700 (PDT) Received: by mail-ot1-x331.google.com with SMTP id o17-20020a9d76510000b02903eabfc221a9so6698774otl.0 for ; Thu, 01 Jul 2021 07:10:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=jz622EkPDOO0jRJK6nnuecEbMpbzVkwpMk8xLpE5AT8=; b=Lu5njjPFq9UfLbuRn1qgwP4Iz8FoX7Ll2EoFKuj/WQdaOp8U46OTib7P4B4WF7yoON 6nJ6bv1J1jpm94gqMyb6oPn/2KAblFztx+vfSHeCrMGCY93nXFy27qqnKBUdj+/6f5Xk 42gXKcU4sLuXQvd+fygybp4+z/VthEnK/JgyXoGaS1tZZhzbqvpf5lS8uxGhX8aha5mv T8tlS9FFbFCcMcWj4AkOd64YWm158w3ijhSBZk08FbpkbtzfpRt64D/6n0auBk8a45Tz I0Q43Qi5GaNK2BIVKuOsTDrNtIS/1LcwiTWw1/BeUs8l0FwAogJ+KXdmmL4WYjKs5i4l LJzw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=jz622EkPDOO0jRJK6nnuecEbMpbzVkwpMk8xLpE5AT8=; b=NdZ1o7obE6hnsqFE//8gbR2uBotpB8LlpmsPWf9pm3P+zW8q3hui3E2W7hBloXwexg VsRf52AJkCt5tJEFteBOYXGip81GIASpxTQYpD2u6lrnqgwczot4Hf/vRDPFX1ZKi4Rp 7vuFmcd5qpU62zr9Q7kLJRCQ6mHhQNE+nxRWMHTLalTEOzHfIPbpZZ2RlV5+ZZXwmL0Y 3ywVY0+2eYh3LpzM/kS8ynuqiEvL+S6VM6DU6hjAY2iRkDdpewTI+uw8UQZiqEgRFp+x y7/co5XBEJinYvThqvXZb5c4fUoXcxTxM3e5GJAgMpbYJoe50OJYah+sE+36zabLRmG6 dlOg== X-Gm-Message-State: AOAM533h049t9XFe7apmhDht4MfTbpfbMjhbiF1A3KkgQBEk5FekC4DR HaSXYQz/jw9SksjhsO2T5rgrEUzq081HWObv1Ks= X-Google-Smtp-Source: ABdhPJyqxV1ouPcVCCqvimMHLIoYJqGBXrxpF+udZDiUtYj/Xs7kCt/u/5BQEvKlmZA4X31sV0/ItEVk1wbgovomWwA= X-Received: by 2002:a05:6830:14cd:: with SMTP id t13mr162668otq.23.1625148658790; Thu, 01 Jul 2021 07:10:58 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Alex Deucher Date: Thu, 1 Jul 2021 10:10:47 -0400 Message-ID: Subject: Re: [PATCH v2] drm/amdgpu: Avoid printing of stack contents on firmware load error To: Jiri Kosina Cc: Alex Deucher , =?UTF-8?Q?Christian_K=C3=B6nig?= , David Airlie , Vojtech Pavlik , Maling list - DRI developers , amd-gfx list , LKML Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Applied. Thanks! Alex On Thu, Jul 1, 2021 at 4:33 AM Jiri Kosina wrote: > > On Thu, 24 Jun 2021, Jiri Kosina wrote: > > > From: Jiri Kosina > > > > In case when psp_init_asd_microcode() fails to load ASD microcode file, > > psp_v12_0_init_microcode() tries to print the firmware filename that > > failed to load before bailing out. > > > > This is wrong because: > > > > - the firmware filename it would want it print is an incorrect one as > > psp_init_asd_microcode() and psp_v12_0_init_microcode() are loading > > different filenames > > - it tries to print fw_name, but that's not yet been initialized by that > > time, so it prints random stack contents, e.g. > > > > amdgpu 0000:04:00.0: Direct firmware load for amdgpu/renoir_asd.bin failed with error -2 > > amdgpu 0000:04:00.0: amdgpu: fail to initialize asd microcode > > amdgpu 0000:04:00.0: amdgpu: psp v12.0: Failed to load firmware "\xfeTO\x8e\xff\xff" > > > > Fix that by bailing out immediately, instead of priting the bogus error > > message. > > Friendly ping on this one too; priting a few bytes of stack is not a > *huge* info leak, but I believe it should be fixed nevertheless. > > Thanks. > > > > > Reported-by: Vojtech Pavlik > > Signed-off-by: Jiri Kosina > > > > --- > > > > v1 -> v2: remove now-unused label > > > > drivers/gpu/drm/amd/amdgpu/psp_v12_0.c | 7 +++---- > > 1 file changed, 3 insertions(+), 4 deletions(-) > > > > diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c b/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c > > index c4828bd3264b..b0ee77ee80b9 100644 > > --- a/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c > > +++ b/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c > > @@ -67,7 +67,7 @@ static int psp_v12_0_init_microcode(struct psp_context *psp) > > > > err = psp_init_asd_microcode(psp, chip_name); > > if (err) > > - goto out; > > + return err; > > > > snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_ta.bin", chip_name); > > err = request_firmware(&adev->psp.ta_fw, fw_name, adev->dev); > > @@ -80,7 +80,7 @@ static int psp_v12_0_init_microcode(struct psp_context *psp) > > } else { > > err = amdgpu_ucode_validate(adev->psp.ta_fw); > > if (err) > > - goto out2; > > + goto out; > > > > ta_hdr = (const struct ta_firmware_header_v1_0 *) > > adev->psp.ta_fw->data; > > @@ -105,10 +105,9 @@ static int psp_v12_0_init_microcode(struct psp_context *psp) > > > > return 0; > > > > -out2: > > +out: > > release_firmware(adev->psp.ta_fw); > > adev->psp.ta_fw = NULL; > > -out: > > if (err) { > > dev_err(adev->dev, > > "psp v12.0: Failed to load firmware \"%s\"\n", > > -- > > 2.12.3 > > > > -- > Jiri Kosina > SUSE Labs > > _______________________________________________ > amd-gfx mailing list > amd-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx 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=-10.5 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 1B828C11F64 for ; 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Thu, 01 Jul 2021 07:10:58 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Alex Deucher Date: Thu, 1 Jul 2021 10:10:47 -0400 Message-ID: Subject: Re: [PATCH v2] drm/amdgpu: Avoid printing of stack contents on firmware load error To: Jiri Kosina Content-Type: text/plain; charset="UTF-8" X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , Vojtech Pavlik , LKML , amd-gfx list , Maling list - DRI developers , Alex Deucher , =?UTF-8?Q?Christian_K=C3=B6nig?= Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Applied. Thanks! Alex On Thu, Jul 1, 2021 at 4:33 AM Jiri Kosina wrote: > > On Thu, 24 Jun 2021, Jiri Kosina wrote: > > > From: Jiri Kosina > > > > In case when psp_init_asd_microcode() fails to load ASD microcode file, > > psp_v12_0_init_microcode() tries to print the firmware filename that > > failed to load before bailing out. > > > > This is wrong because: > > > > - the firmware filename it would want it print is an incorrect one as > > psp_init_asd_microcode() and psp_v12_0_init_microcode() are loading > > different filenames > > - it tries to print fw_name, but that's not yet been initialized by that > > time, so it prints random stack contents, e.g. > > > > amdgpu 0000:04:00.0: Direct firmware load for amdgpu/renoir_asd.bin failed with error -2 > > amdgpu 0000:04:00.0: amdgpu: fail to initialize asd microcode > > amdgpu 0000:04:00.0: amdgpu: psp v12.0: Failed to load firmware "\xfeTO\x8e\xff\xff" > > > > Fix that by bailing out immediately, instead of priting the bogus error > > message. > > Friendly ping on this one too; priting a few bytes of stack is not a > *huge* info leak, but I believe it should be fixed nevertheless. > > Thanks. > > > > > Reported-by: Vojtech Pavlik > > Signed-off-by: Jiri Kosina > > > > --- > > > > v1 -> v2: remove now-unused label > > > > drivers/gpu/drm/amd/amdgpu/psp_v12_0.c | 7 +++---- > > 1 file changed, 3 insertions(+), 4 deletions(-) > > > > diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c b/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c > > index c4828bd3264b..b0ee77ee80b9 100644 > > --- a/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c > > +++ b/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c > > @@ -67,7 +67,7 @@ static int psp_v12_0_init_microcode(struct psp_context *psp) > > > > err = psp_init_asd_microcode(psp, chip_name); > > if (err) > > - goto out; > > + return err; > > > > snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_ta.bin", chip_name); > > err = request_firmware(&adev->psp.ta_fw, fw_name, adev->dev); > > @@ -80,7 +80,7 @@ static int psp_v12_0_init_microcode(struct psp_context *psp) > > } else { > > err = amdgpu_ucode_validate(adev->psp.ta_fw); > > if (err) > > - goto out2; > > + goto out; > > > > ta_hdr = (const struct ta_firmware_header_v1_0 *) > > adev->psp.ta_fw->data; > > @@ -105,10 +105,9 @@ static int psp_v12_0_init_microcode(struct psp_context *psp) > > > > return 0; > > > > -out2: > > +out: > > release_firmware(adev->psp.ta_fw); > > adev->psp.ta_fw = NULL; > > -out: > > if (err) { > > dev_err(adev->dev, > > "psp v12.0: Failed to load firmware \"%s\"\n", > > -- > > 2.12.3 > > > > -- > Jiri Kosina > SUSE Labs > > _______________________________________________ > amd-gfx mailing list > amd-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx 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=-10.5 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 4A0F6C11F64 for ; 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Thu, 01 Jul 2021 07:10:58 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Alex Deucher Date: Thu, 1 Jul 2021 10:10:47 -0400 Message-ID: Subject: Re: [PATCH v2] drm/amdgpu: Avoid printing of stack contents on firmware load error To: Jiri Kosina X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , Vojtech Pavlik , LKML , amd-gfx list , Maling list - DRI developers , Alex Deucher , =?UTF-8?Q?Christian_K=C3=B6nig?= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" Applied. Thanks! Alex On Thu, Jul 1, 2021 at 4:33 AM Jiri Kosina wrote: > > On Thu, 24 Jun 2021, Jiri Kosina wrote: > > > From: Jiri Kosina > > > > In case when psp_init_asd_microcode() fails to load ASD microcode file, > > psp_v12_0_init_microcode() tries to print the firmware filename that > > failed to load before bailing out. > > > > This is wrong because: > > > > - the firmware filename it would want it print is an incorrect one as > > psp_init_asd_microcode() and psp_v12_0_init_microcode() are loading > > different filenames > > - it tries to print fw_name, but that's not yet been initialized by that > > time, so it prints random stack contents, e.g. > > > > amdgpu 0000:04:00.0: Direct firmware load for amdgpu/renoir_asd.bin failed with error -2 > > amdgpu 0000:04:00.0: amdgpu: fail to initialize asd microcode > > amdgpu 0000:04:00.0: amdgpu: psp v12.0: Failed to load firmware "\xfeTO\x8e\xff\xff" > > > > Fix that by bailing out immediately, instead of priting the bogus error > > message. > > Friendly ping on this one too; priting a few bytes of stack is not a > *huge* info leak, but I believe it should be fixed nevertheless. > > Thanks. > > > > > Reported-by: Vojtech Pavlik > > Signed-off-by: Jiri Kosina > > > > --- > > > > v1 -> v2: remove now-unused label > > > > drivers/gpu/drm/amd/amdgpu/psp_v12_0.c | 7 +++---- > > 1 file changed, 3 insertions(+), 4 deletions(-) > > > > diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c b/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c > > index c4828bd3264b..b0ee77ee80b9 100644 > > --- a/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c > > +++ b/drivers/gpu/drm/amd/amdgpu/psp_v12_0.c > > @@ -67,7 +67,7 @@ static int psp_v12_0_init_microcode(struct psp_context *psp) > > > > err = psp_init_asd_microcode(psp, chip_name); > > if (err) > > - goto out; > > + return err; > > > > snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_ta.bin", chip_name); > > err = request_firmware(&adev->psp.ta_fw, fw_name, adev->dev); > > @@ -80,7 +80,7 @@ static int psp_v12_0_init_microcode(struct psp_context *psp) > > } else { > > err = amdgpu_ucode_validate(adev->psp.ta_fw); > > if (err) > > - goto out2; > > + goto out; > > > > ta_hdr = (const struct ta_firmware_header_v1_0 *) > > adev->psp.ta_fw->data; > > @@ -105,10 +105,9 @@ static int psp_v12_0_init_microcode(struct psp_context *psp) > > > > return 0; > > > > -out2: > > +out: > > release_firmware(adev->psp.ta_fw); > > adev->psp.ta_fw = NULL; > > -out: > > if (err) { > > dev_err(adev->dev, > > "psp v12.0: Failed to load firmware \"%s\"\n", > > -- > > 2.12.3 > > > > -- > Jiri Kosina > SUSE Labs > > _______________________________________________ > amd-gfx mailing list > amd-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx