From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D0E803E51C5 for ; Wed, 5 Aug 2026 21:21:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785964900; cv=none; b=SJnQN5SIx85NJdw40wBftlZZiQ0R6TGHzI4M2UH3rJdFdmlIF6VzXPIoK0BHN9vsadbyk6tjYfpB2gPDz5w4SZxCupELYztX0K87Bnsf0uecUPKWjJ9qY5g9M6Q5/Dm7Pa2Dtb0iHLPF+Ai4Gwswch4LbfZnvlvjAmWpRyDv8O4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785964900; c=relaxed/simple; bh=iO4t5klbcy2D8qyuFCB1GULXMtOETMcve/6KytPfdJo=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=dIVkUvF30DjQygrEwd8jmMTwtzuZYbE4YXtasmJCQ71hC8M+hc3EAz7A0Zb1O9KbH2f+xIG38vSb7tgRsvOua3tgImEwJeZyViOaJDvC940eI8cA42SrJNLg0Zb5ee1MuX0HT73q7IUtubWgklRo5O7CvR3f/hD315BvigFFvn4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lg8uk6yX; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="lg8uk6yX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 152E81F00A3E; Wed, 5 Aug 2026 21:21:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785964885; bh=5Ghld3Bgtyd8N4z/I2BF8xaP1MK1xRhcD1IDIrCmmoQ=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=lg8uk6yX1wy9cqF2ymdzThp+oC57BM+3pzvJOB8fvrDEZHSrMbL1iCIvs6ccP2WoX pCl3yhwc0i10wwXABfc5YYisSLsrbGNkEAMY4wl+zYDnwiRzEUSL8bYAwLXOZ/lUTa F2eDLwYyQ288OHwfJnc8mInpgsAYNUeRsoMSn26ahtWDCvZ9IynTeFMA3ej+4RSAFf rPz1RlsOr0MBdFhA2ruiF1Lkc5CKwNMgW5nxqZrqUS8NbWmHSBeHVT8kpnTrrGlmqj N1BJ8mUJP49lNfUX6rrZTqDVU7oPyZD5xI75IPCXbgLo2ee2jy0FDUCW8k4JK87L+4 RQycacVrs72sw== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 19942392FFD1; Wed, 5 Aug 2026 21:20:46 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [f2fs-dev] [PATCH v4 1/2] f2fs: avoid NULL checkpoint thread access in sysfs From: patchwork-bot+f2fs@kernel.org Message-Id: <178596484463.530543.6481276544684455442.git-patchwork-notify@kernel.org> Date: Wed, 05 Aug 2026 21:20:44 +0000 References: <20260804014849.1942326-1-qiwenjie@xiaomi.com> In-Reply-To: <20260804014849.1942326-1-qiwenjie@xiaomi.com> To: Wenjie Qi Cc: jaegeuk@kernel.org, chao@kernel.org, linux-kernel@vger.kernel.org, qiwenjie@xiaomi.com, stable@kernel.org, linux-f2fs-devel@lists.sourceforge.net Hello: This series was applied to jaegeuk/f2fs.git (dev) by Jaegeuk Kim : On Tue, 4 Aug 2026 09:48:48 +0800 you wrote: > checkpoint_merge can be enabled even when no checkpoint merge thread is > running. A read-only mount is one case: f2fs does not start > f2fs_issue_ckpt there, but ckpt_thread_ioprio is still writable through > sysfs. > > The ckpt_thread_ioprio store path updates the saved ioprio value and, > when checkpoint_merge is enabled, calls set_task_ioprio() for the > checkpoint thread. If cprc->f2fs_issue_ckpt is NULL, that dereferences a > NULL task pointer. > > [...] Here is the summary with links: - [f2fs-dev,v4,1/2] f2fs: avoid NULL checkpoint thread access in sysfs https://git.kernel.org/jaegeuk/f2fs/c/5cb33b00c8fb - [f2fs-dev,v4,2/2] f2fs: protect critical_task_priority updates with s_umount https://git.kernel.org/jaegeuk/f2fs/c/8e4692c6c165 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html