From patchwork Tue Oct 31 07:24:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheng Wang X-Patchwork-Id: 96436 X-Patchwork-Delegate: hverkuil@xs4all.nl Received: from vger.kernel.org ([23.128.96.18]) by www.linuxtv.org with esmtp (Exim 4.92) (envelope-from ) id 1qxj8L-00CY6p-ML; Tue, 31 Oct 2023 07:25:53 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343684AbjJaHZw (ORCPT + 1 other); Tue, 31 Oct 2023 03:25:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343781AbjJaHZk (ORCPT ); Tue, 31 Oct 2023 03:25:40 -0400 X-Greylist: delayed 459 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Tue, 31 Oct 2023 00:25:21 PDT Received: from m12.mail.163.com (m12.mail.163.com [220.181.12.214]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id B87AFD69; Tue, 31 Oct 2023 00:25:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=SJWU5 tnjso1vDAK736GkMoFEm3BXg8uhBy9G73LcJvU=; b=J9Q0LIkiiwv/VssVaKp3e vXr/+9DXZSnlshaZwntbXD0UtypAGWdOLzJG001ilaLfHUIT9x+pGVNED2Aei0fJ HZWPhCNKzECaAxBQT9tYmDejmv2RA+Qq0n4htosaxWi9BAqlfv1M/pW+PdpJHUhd 9TTo8OhyXPGGXNrMwXD1iI= Received: from leanderwang-LC4.localdomain (unknown [111.206.145.21]) by zwqz-smtp-mta-g5-0 (Coremail) with SMTP id _____wDXP+6wq0Blv5KVAQ--.8863S3; Tue, 31 Oct 2023 15:24:32 +0800 (CST) From: Zheng Wang To: dmitry.osipenko@collabora.com Cc: Kyrie.Wu@mediatek.com, bin.liu@mediatek.com, mchehab@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Irui.Wang@mediatek.com, security@kernel.org, hackerzheng666@gmail.com, 1395428693sheep@gmail.com, alex000young@gmail.com, amergnat@baylibre.com, wenst@chromium.org, Zheng Wang Subject: [PATCH v2 1/3] media: mtk-jpeg: Remove cancel worker in mtk_jpeg_remove to avoid the crash of multi-core JPEG devices Date: Tue, 31 Oct 2023 15:24:27 +0800 Message-Id: <20231031072429.21448-2-zyytlz.wz@163.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231031072429.21448-1-zyytlz.wz@163.com> References: <20231031072429.21448-1-zyytlz.wz@163.com> MIME-Version: 1.0 X-CM-TRANSID: _____wDXP+6wq0Blv5KVAQ--.8863S3 X-Coremail-Antispam: 1Uf129KBjvJXoW7Zw4rtF48tF1UJF4fZr4xWFg_yoW8Gr45pF WfK348CrWUGF4qgryDAa47ZFy5Gwnaya40gr47uwn2q393XF47t34jya4FqFWxXF9rCFy3 tF1FvryfWF4jvFJanT9S1TB71UUUUUDqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0zRNBMNUUUUU= X-Originating-IP: [111.206.145.21] X-CM-SenderInfo: h2113zf2oz6qqrwthudrp/xtbBzhQaU2I0bIocowAAsc X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_BL,RCVD_IN_MSPIKE_L4, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-LSpam-Score: -4.8 (----) X-LSpam-Report: No, score=-4.8 required=5.0 tests=BAYES_00=-1.9,DKIM_SIGNED=0.1,DKIM_VALID=-0.1,DKIM_VALID_AU=-0.1,FREEMAIL_FORGED_FROMDOMAIN=0.001,FREEMAIL_FROM=0.001,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1,RCVD_IN_DNSWL_MED=-2.3 autolearn=ham autolearn_force=no This patch reverts commit c677d7ae8314 ("media: mtk-jpeg: Fix use after free bug due to uncanceled work"). The job_timeout_work is initialized only for the single-core JPEG device so it will cause the crash for multi-core JPEG devices. Fix it by removing the cancel_delayed_work_sync function. Fixes: c677d7ae8314 ("media: mtk-jpeg: Fix use after free bug due to uncanceled work") Signed-off-by: Zheng Wang Signed-off-by: Dmitry Osipenko --- v2: - put the patches into a single series suggested by Dmitry --- drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c index 7194f88edc0f..60425c99a2b8 100644 --- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c +++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c @@ -1403,7 +1403,6 @@ static void mtk_jpeg_remove(struct platform_device *pdev) { struct mtk_jpeg_dev *jpeg = platform_get_drvdata(pdev); - cancel_delayed_work_sync(&jpeg->job_timeout_work); pm_runtime_disable(&pdev->dev); video_unregister_device(jpeg->vdev); v4l2_m2m_release(jpeg->m2m_dev); From patchwork Tue Oct 31 07:24:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheng Wang X-Patchwork-Id: 96437 X-Patchwork-Delegate: hverkuil@xs4all.nl Received: from vger.kernel.org ([23.128.96.18]) by www.linuxtv.org with esmtp (Exim 4.92) (envelope-from ) id 1qxj8l-00CY8B-8F; Tue, 31 Oct 2023 07:26:19 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343758AbjJaH0S (ORCPT + 1 other); Tue, 31 Oct 2023 03:26:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46850 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343733AbjJaH0B (ORCPT ); Tue, 31 Oct 2023 03:26:01 -0400 X-Greylist: delayed 480 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Tue, 31 Oct 2023 00:25:43 PDT Received: from m12.mail.163.com (m12.mail.163.com [220.181.12.214]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 1EF54119; Tue, 31 Oct 2023 00:25:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=Mn+LM vMphVLhG3rmeD4sGc/rl3mIEcUGZbCfQih6dB0=; b=Mes0fKhH6e6cs5tzJFYB0 32joL+cSIJU3YdEePznWPbUFvzOMLE8iBOXw+mjhqJAg1RW07I5e1ycGmr3rLIIa tPnVhec9C8RY7QQpdJCHqs3k1gh9e8l6Md2DAkl/zmUjyqfedPazaHLetzdRvttJ uVs0alVwXTpi3eTDcKzlTg= Received: from leanderwang-LC4.localdomain (unknown [111.206.145.21]) by zwqz-smtp-mta-g5-0 (Coremail) with SMTP id _____wDXP+6wq0Blv5KVAQ--.8863S4; Tue, 31 Oct 2023 15:24:32 +0800 (CST) From: Zheng Wang To: dmitry.osipenko@collabora.com Cc: Kyrie.Wu@mediatek.com, bin.liu@mediatek.com, mchehab@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Irui.Wang@mediatek.com, security@kernel.org, hackerzheng666@gmail.com, 1395428693sheep@gmail.com, alex000young@gmail.com, amergnat@baylibre.com, wenst@chromium.org, Zheng Wang , stable@vger.kernel.org Subject: [PATCH v2 2/3] media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run Date: Tue, 31 Oct 2023 15:24:28 +0800 Message-Id: <20231031072429.21448-3-zyytlz.wz@163.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231031072429.21448-1-zyytlz.wz@163.com> References: <20231031072429.21448-1-zyytlz.wz@163.com> MIME-Version: 1.0 X-CM-TRANSID: _____wDXP+6wq0Blv5KVAQ--.8863S4 X-Coremail-Antispam: 1Uf129KBjvJXoW7uF1rGr1fJr1kJFW3KF43GFg_yoW8KF48pr Zagw4DCFWUGrs0gr48Aa4UZF1rC398tF12gr4S9wn3Z343XFs7Jry0ya4IqFWIyr9rCa4r Zr1F9a4xJr4DZFJanT9S1TB71UUUUUDqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07UouWLUUUUU= X-Originating-IP: [111.206.145.21] X-CM-SenderInfo: h2113zf2oz6qqrwthudrp/1tbiXAMaU1Xl78ZMQwAAsA X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_BL,RCVD_IN_MSPIKE_L4, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-LSpam-Score: -4.8 (----) X-LSpam-Report: No, score=-4.8 required=5.0 tests=BAYES_00=-1.9,DKIM_SIGNED=0.1,DKIM_VALID=-0.1,DKIM_VALID_AU=-0.1,FREEMAIL_FORGED_FROMDOMAIN=0.001,FREEMAIL_FROM=0.001,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1,RCVD_IN_DNSWL_MED=-2.3 autolearn=ham autolearn_force=no In mtk_jpeg_probe, &jpeg->job_timeout_work is bound with mtk_jpeg_job_timeout_work. In mtk_jpeg_dec_device_run, if error happens in mtk_jpeg_set_dec_dst, it will finally start the worker while mark the job as finished by invoking v4l2_m2m_job_finish. There are two methods to trigger the bug. If we remove the module, it which will call mtk_jpeg_remove to make cleanup. The possible sequence is as follows, which will cause a use-after-free bug. CPU0 CPU1 mtk_jpeg_dec_... | start worker | |mtk_jpeg_job_timeout_work mtk_jpeg_remove | v4l2_m2m_release | kfree(m2m_dev); | | | v4l2_m2m_get_curr_priv | m2m_dev->curr_ctx //use If we close the file descriptor, which will call mtk_jpeg_release, it will have a similar sequence. Fix this bug by starting timeout worker only if started jpegdec worker successfully. Then v4l2_m2m_job_finish will only be called in either mtk_jpeg_job_timeout_work or mtk_jpeg_dec_device_run. Fixes: b2f0d2724ba4 ("[media] vcodec: mediatek: Add Mediatek JPEG Decoder Driver") Signed-off-by: Zheng Wang Signed-off-by: Dmitry Osipenko Cc: stable@vger.kernel.org --- v2: - put the patches into a single series suggested by Dmitry --- drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c index 60425c99a2b8..a39acde2724a 100644 --- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c +++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c @@ -1021,13 +1021,13 @@ static void mtk_jpeg_dec_device_run(void *priv) if (ret < 0) goto dec_end; - schedule_delayed_work(&jpeg->job_timeout_work, - msecs_to_jiffies(MTK_JPEG_HW_TIMEOUT_MSEC)); - mtk_jpeg_set_dec_src(ctx, &src_buf->vb2_buf, &bs); if (mtk_jpeg_set_dec_dst(ctx, &jpeg_src_buf->dec_param, &dst_buf->vb2_buf, &fb)) goto dec_end; + schedule_delayed_work(&jpeg->job_timeout_work, + msecs_to_jiffies(MTK_JPEG_HW_TIMEOUT_MSEC)); + spin_lock_irqsave(&jpeg->hw_lock, flags); mtk_jpeg_dec_reset(jpeg->reg_base); mtk_jpeg_dec_set_config(jpeg->reg_base, From patchwork Tue Oct 31 07:24:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheng Wang X-Patchwork-Id: 96435 X-Patchwork-Delegate: hverkuil@xs4all.nl Received: from vger.kernel.org ([23.128.96.18]) by www.linuxtv.org with esmtp (Exim 4.92) (envelope-from ) id 1qxj7W-00CY55-Eh; Tue, 31 Oct 2023 07:25:02 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343644AbjJaHZB (ORCPT + 1 other); Tue, 31 Oct 2023 03:25:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56454 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343607AbjJaHZA (ORCPT ); Tue, 31 Oct 2023 03:25:00 -0400 Received: from m12.mail.163.com (m12.mail.163.com [220.181.12.216]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id C0C65E4; Tue, 31 Oct 2023 00:24:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=omdBI C+e1jVadRkJ0QsCI7L9wKGBA2OoP3PF04hqiWI=; b=QJgdMKf9G1x2TXO+YyjER 0BC0mNKytgpKXaoFv61Lmze4alS6yIqqE4JNXxOTLjZ/4Gz05O30pmACgzNaq5OK jvffLR7nvvrPzD1VagDHsq6JH1RG9OW+RuVF81MrnIGVoqUwpHBleNLKzv0lymzX 38G8TBbSLYYqiBX2LOssg0= Received: from leanderwang-LC4.localdomain (unknown [111.206.145.21]) by zwqz-smtp-mta-g5-0 (Coremail) with SMTP id _____wDXP+6wq0Blv5KVAQ--.8863S5; Tue, 31 Oct 2023 15:24:32 +0800 (CST) From: Zheng Wang To: dmitry.osipenko@collabora.com Cc: Kyrie.Wu@mediatek.com, bin.liu@mediatek.com, mchehab@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Irui.Wang@mediatek.com, security@kernel.org, hackerzheng666@gmail.com, 1395428693sheep@gmail.com, alex000young@gmail.com, amergnat@baylibre.com, wenst@chromium.org, Zheng Wang , stable@vger.kernel.org Subject: [PATCH v2 3/3] media: mtk-jpeg: Fix timeout schedule error in mtk_jpegdec_worker. Date: Tue, 31 Oct 2023 15:24:29 +0800 Message-Id: <20231031072429.21448-4-zyytlz.wz@163.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231031072429.21448-1-zyytlz.wz@163.com> References: <20231031072429.21448-1-zyytlz.wz@163.com> MIME-Version: 1.0 X-CM-TRANSID: _____wDXP+6wq0Blv5KVAQ--.8863S5 X-Coremail-Antispam: 1Uf129KBjvJXoW7Ar15uF1rKrW5Gr4xtw4Dtwb_yoW8ZF1rpF WfK3yqkrWUWrZ8tF4UA3W7ZFy5G34Fgr47Ww43Xwn5A343XF47tryjya4xtFWIyFy2ka4F yF4vg34xJFsFyFJanT9S1TB71UUUUUDqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07UJHUgUUUUU= X-Originating-IP: [111.206.145.21] X-CM-SenderInfo: h2113zf2oz6qqrwthudrp/xtbBdhMaU2DkptgIowAAs9 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_BL,RCVD_IN_MSPIKE_L4, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-LSpam-Score: -4.8 (----) X-LSpam-Report: No, score=-4.8 required=5.0 tests=BAYES_00=-1.9,DKIM_SIGNED=0.1,DKIM_VALID=-0.1,DKIM_VALID_AU=-0.1,FREEMAIL_FORGED_FROMDOMAIN=0.001,FREEMAIL_FROM=0.001,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1,RCVD_IN_DNSWL_MED=-2.3 autolearn=ham autolearn_force=no In mtk_jpegdec_worker, if error occurs in mtk_jpeg_set_dec_dst, it will start the timeout worker and invoke v4l2_m2m_job_finish at the same time. This will break the logic of design for there should be only one function to call v4l2_m2m_job_finish. But now the timeout handler and mtk_jpegdec_worker will both invoke it. Fix it by start the worker only if mtk_jpeg_set_dec_dst successfully finished. Fixes: da4ede4b7fd6 ("media: mtk-jpeg: move data/code inside CONFIG_OF blocks") Signed-off-by: Zheng Wang Signed-off-by: Dmitry Osipenko Cc: stable@vger.kernel.org --- v2: - put the patches into a single series suggested by Dmitry --- drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c index a39acde2724a..c3456c700c07 100644 --- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c +++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c @@ -1749,9 +1749,6 @@ static void mtk_jpegdec_worker(struct work_struct *work) v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); - schedule_delayed_work(&comp_jpeg[hw_id]->job_timeout_work, - msecs_to_jiffies(MTK_JPEG_HW_TIMEOUT_MSEC)); - mtk_jpeg_set_dec_src(ctx, &src_buf->vb2_buf, &bs); if (mtk_jpeg_set_dec_dst(ctx, &jpeg_src_buf->dec_param, @@ -1761,6 +1758,9 @@ static void mtk_jpegdec_worker(struct work_struct *work) goto setdst_end; } + schedule_delayed_work(&comp_jpeg[hw_id]->job_timeout_work, + msecs_to_jiffies(MTK_JPEG_HW_TIMEOUT_MSEC)); + spin_lock_irqsave(&comp_jpeg[hw_id]->hw_lock, flags); ctx->total_frame_num++; mtk_jpeg_dec_reset(comp_jpeg[hw_id]->reg_base);