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Mon, 23 Dec 2024 23:24:56 -0800 (PST) From: Sergey Senozhatsky To: Stanimir Varbanov , Vikash Garodia , "Bryan O'Donoghue" , Dmitry Baryshkov Cc: Hans Verkuil , linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Sergey Senozhatsky , stable@vger.kernel.org, Nathan Hebert Subject: [PATCHv3 1/2] media: venus: destroy hfi session after m2m_ctx release Date: Tue, 24 Dec 2024 16:24:05 +0900 Message-ID: <20241224072444.2044956-2-senozhatsky@chromium.org> X-Mailer: git-send-email 2.47.1.613.gc27f4b7a9f-goog In-Reply-To: <20241224072444.2044956-1-senozhatsky@chromium.org> References: <20241224072444.2044956-1-senozhatsky@chromium.org> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This partially reverts commit that made hfi_session_destroy() the first step of vdec/venc close(). The reason being is a regression report when, supposedly, encode/decoder is closed with still active streaming (no ->stop_streaming() call before close()) and pending pkts, so isr_thread cannot find instance and fails to process those pending pkts. This was the idea behind the original patch - make it impossible to use instance under destruction, because this is racy, but apparently there are uses cases that depend on that unsafe pattern. Return to the old (unsafe) behaviour for the time being (until a better fix is found). Fixes: 45b1a1b348ec1 ("media: venus: sync with threaded IRQ during inst destruction") Cc: stable@vger.kernel.org Reported-by: Nathan Hebert Signed-off-by: Sergey Senozhatsky --- drivers/media/platform/qcom/venus/core.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c index 2d27c5167246..807487a1f536 100644 --- a/drivers/media/platform/qcom/venus/core.c +++ b/drivers/media/platform/qcom/venus/core.c @@ -506,18 +506,14 @@ static __maybe_unused int venus_runtime_suspend(struct device *dev) void venus_close_common(struct venus_inst *inst) { /* - * First, remove the inst from the ->instances list, so that - * to_instance() will return NULL. - */ - hfi_session_destroy(inst); - /* - * Second, make sure we don't have IRQ/IRQ-thread currently running + * Make sure we don't have IRQ/IRQ-thread currently running * or pending execution, which would race with the inst destruction. */ synchronize_irq(inst->core->irq); v4l2_m2m_ctx_release(inst->m2m_ctx); v4l2_m2m_release(inst->m2m_dev); + hfi_session_destroy(inst); v4l2_fh_del(&inst->fh); v4l2_fh_exit(&inst->fh); v4l2_ctrl_handler_free(&inst->ctrl_handler); From patchwork Tue Dec 24 07:24:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergey Senozhatsky X-Patchwork-Id: 13919722 Received: from mail-pl1-f171.google.com (mail-pl1-f171.google.com [209.85.214.171]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B3F57191F6D for ; Tue, 24 Dec 2024 07:25:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735025103; cv=none; b=RQew5Ydabthz07lZz/ZzQLZAgq7lBmDrErRuuvhGGZhMkClKzg4KcTn9LKFoXfVSmMx7OurZdKhXu8iOI4BGmRktRM7jfnOjMmpOIyOqNJYoPJQWZE7usC9IKZK3trJnB8H4gHgLoVtRd2jJjUryEVPoihB+kjy62W3hxkdeQfI= ARC-Message-Signature: i=1; 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Mon, 23 Dec 2024 23:25:00 -0800 (PST) From: Sergey Senozhatsky To: Stanimir Varbanov , Vikash Garodia , "Bryan O'Donoghue" , Dmitry Baryshkov Cc: Hans Verkuil , linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Sergey Senozhatsky Subject: [PATCHv3 2/2] media: venus: match instance creation and destruction order Date: Tue, 24 Dec 2024 16:24:06 +0900 Message-ID: <20241224072444.2044956-3-senozhatsky@chromium.org> X-Mailer: git-send-email 2.47.1.613.gc27f4b7a9f-goog In-Reply-To: <20241224072444.2044956-1-senozhatsky@chromium.org> References: <20241224072444.2044956-1-senozhatsky@chromium.org> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Match order of instances' initialization in venc_open()/vdec_close() and order of destruction in venus_common_close(). Suggested-by: Bryan O'Donoghue Signed-off-by: Sergey Senozhatsky --- drivers/media/platform/qcom/venus/vdec.c | 18 +++++++++--------- drivers/media/platform/qcom/venus/venc.c | 18 +++++++++--------- 2 files changed, 18 insertions(+), 18 deletions(-) diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c index 98c22b9f9372..9f82882b77bc 100644 --- a/drivers/media/platform/qcom/venus/vdec.c +++ b/drivers/media/platform/qcom/venus/vdec.c @@ -1697,10 +1697,6 @@ static int vdec_open(struct file *file) if (ret) goto err_free; - ret = hfi_session_create(inst, &vdec_hfi_ops); - if (ret) - goto err_ctrl_deinit; - vdec_inst_init(inst); ida_init(&inst->dpb_ids); @@ -1712,15 +1708,19 @@ static int vdec_open(struct file *file) inst->m2m_dev = v4l2_m2m_init(&vdec_m2m_ops); if (IS_ERR(inst->m2m_dev)) { ret = PTR_ERR(inst->m2m_dev); - goto err_session_destroy; + goto err_ctrl_deinit; } inst->m2m_ctx = v4l2_m2m_ctx_init(inst->m2m_dev, inst, m2m_queue_init); if (IS_ERR(inst->m2m_ctx)) { ret = PTR_ERR(inst->m2m_ctx); - goto err_m2m_release; + goto err_m2m_dev_release; } + ret = hfi_session_create(inst, &vdec_hfi_ops); + if (ret) + goto err_m2m_ctx_release; + v4l2_fh_init(&inst->fh, core->vdev_dec); inst->fh.ctrl_handler = &inst->ctrl_handler; @@ -1730,10 +1730,10 @@ static int vdec_open(struct file *file) return 0; -err_m2m_release: +err_m2m_ctx_release: + v4l2_m2m_ctx_release(inst->m2m_ctx); +err_m2m_dev_release: v4l2_m2m_release(inst->m2m_dev); -err_session_destroy: - hfi_session_destroy(inst); err_ctrl_deinit: v4l2_ctrl_handler_free(&inst->ctrl_handler); err_free: diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c index c1c543535aaf..c7f8e37dba9b 100644 --- a/drivers/media/platform/qcom/venus/venc.c +++ b/drivers/media/platform/qcom/venus/venc.c @@ -1492,10 +1492,6 @@ static int venc_open(struct file *file) if (ret) goto err_free; - ret = hfi_session_create(inst, &venc_hfi_ops); - if (ret) - goto err_ctrl_deinit; - venc_inst_init(inst); /* @@ -1505,15 +1501,19 @@ static int venc_open(struct file *file) inst->m2m_dev = v4l2_m2m_init(&venc_m2m_ops); if (IS_ERR(inst->m2m_dev)) { ret = PTR_ERR(inst->m2m_dev); - goto err_session_destroy; + goto err_ctrl_deinit; } inst->m2m_ctx = v4l2_m2m_ctx_init(inst->m2m_dev, inst, m2m_queue_init); if (IS_ERR(inst->m2m_ctx)) { ret = PTR_ERR(inst->m2m_ctx); - goto err_m2m_release; + goto err_m2m_dev_release; } + ret = hfi_session_create(inst, &venc_hfi_ops); + if (ret) + goto err_m2m_ctx_release; + v4l2_fh_init(&inst->fh, core->vdev_enc); inst->fh.ctrl_handler = &inst->ctrl_handler; @@ -1523,10 +1523,10 @@ static int venc_open(struct file *file) return 0; -err_m2m_release: +err_m2m_ctx_release: + v4l2_m2m_ctx_release(inst->m2m_ctx); +err_m2m_dev_release: v4l2_m2m_release(inst->m2m_dev); -err_session_destroy: - hfi_session_destroy(inst); err_ctrl_deinit: v4l2_ctrl_handler_free(&inst->ctrl_handler); err_free: