From patchwork Fri Jan 14 11:02:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luca Weiss X-Patchwork-Id: 12713576 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CD4BCC433EF for ; Fri, 14 Jan 2022 11:02:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240649AbiANLCp (ORCPT ); Fri, 14 Jan 2022 06:02:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59486 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239554AbiANLCo (ORCPT ); Fri, 14 Jan 2022 06:02:44 -0500 Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F1DCBC06173E for ; Fri, 14 Jan 2022 03:02:43 -0800 (PST) Received: by mail-ed1-x536.google.com with SMTP id 30so33688137edv.3 for ; Fri, 14 Jan 2022 03:02:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fairphone.com; s=fair; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=nfTpTGejjbs1/IGPoPayvAsK5HXiDgr01tfB1Ox12/o=; b=F4kAU5sR4g6LVo0JnWblWrXfyVfC4H454DjEzaz7/ozw0szvs3R1q3Y91nZ1hCi9dh zx/WWapKaJ3nGVMZzcVilNc5dPgRr4A8TEK3h9GBFI/m4/LWda1yVgFQg7CmHg8E6XAC FdZbhGUyGHbK/UYiDHMZ/o5JHdXDmY1m4WI61dRVsRNfwGyHFDwvsHRuNb4qRiLop0mh Y90+yFSHNiyAMKqkCxHKrojCHqVEaCTPG03p5PTnnfVG8w2z8fuh5h9dq3sEjyppfa4o 9YkZ+snIayxn0AD5clE9HBui221LF9ToMbKcnX0tyMaLkLQ9ht5hph4jwJrQ2dg1NrCJ Zx1g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=nfTpTGejjbs1/IGPoPayvAsK5HXiDgr01tfB1Ox12/o=; b=fqegcQxqOj18kj/0xJ3o3o2S+/JUk1Whnbz/3smlYa/0rk5mRoKIH2YCNvEddXUyPF 8MG7x6K/VHEPXm91/HJia8MK9xgR72YyKuyGKCSYSsVgFGAXrtuRujhIeSjMzdFBxHk1 6gdMNcR8e+wVnrnx6e3YBiElJtkSLV3z4lDrl7sAnsxsuGUB8HOYnjxG/1Eo9BHcJ/ED 0ktgoN9gmBILqwjCKLFVdtHvmkp6qBpzQH6uSCZVlkW/GUdsPMPlki4ywTbCW/0U0u6F C8ug+/A02F083SDV7p6kfSnbJm7f5uBz7MdGYFMR3lRTn3cbTvfCfeoOHQFRk8EyAA8I +X2Q== X-Gm-Message-State: AOAM533PPfn/PGWxdq2d4kFR8jCByEQtVUMTATWHtx/4dxWmtN8RY7MU egWqTQANieY2+p7l6WsRdB7KnA== X-Google-Smtp-Source: ABdhPJxrqLroV1LJ+YyoXVnpa0G8hJgPhVutmPuZ1ZhswksM4KJynfcwHTX4uevBrPH9BDYmLyIFdg== X-Received: by 2002:a17:906:9b8e:: with SMTP id dd14mr6629836ejc.307.1642158162583; Fri, 14 Jan 2022 03:02:42 -0800 (PST) Received: from localhost.localdomain ([2a02:a210:20c5:8c80:7d0a:cd68:c339:f426]) by smtp.gmail.com with ESMTPSA id 21sm1725718ejz.24.2022.01.14.03.02.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Jan 2022 03:02:41 -0800 (PST) From: Luca Weiss To: linux-arm-msm@vger.kernel.org Cc: ~postmarketos/upstreaming@lists.sr.ht, Luca Weiss , Stanimir Varbanov , Andy Gross , Bjorn Andersson , Mauro Carvalho Chehab , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] media: venus: hfi: avoid null dereference in deinit Date: Fri, 14 Jan 2022 12:02:26 +0100 Message-Id: <20220114110226.130380-2-luca.weiss@fairphone.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220114110226.130380-1-luca.weiss@fairphone.com> References: <20220114110226.130380-1-luca.weiss@fairphone.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org If venus_probe fails at pm_runtime_put_sync the error handling first calls hfi_destroy and afterwards hfi_core_deinit. As hfi_destroy sets core->ops to NULL, hfi_core_deinit cannot call the core_deinit function anymore. Avoid this null pointer derefence by skipping the call when necessary. Signed-off-by: Luca Weiss --- drivers/media/platform/qcom/venus/hfi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/platform/qcom/venus/hfi.c b/drivers/media/platform/qcom/venus/hfi.c index 4e2151fb47f0..1968f09ad177 100644 --- a/drivers/media/platform/qcom/venus/hfi.c +++ b/drivers/media/platform/qcom/venus/hfi.c @@ -104,6 +104,9 @@ int hfi_core_deinit(struct venus_core *core, bool blocking) mutex_lock(&core->lock); } + if (!core->ops) + goto unlock; + ret = core->ops->core_deinit(core); if (!ret)