From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out203-205-221-236.mail.qq.com (out203-205-221-236.mail.qq.com [203.205.221.236]) (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 AC493207656 for ; Tue, 18 Mar 2025 11:22:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=203.205.221.236 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742296940; cv=none; b=rzZuwtX7dNehdX7AonTz2rCTerX53973BevEjz5/TL3UXwXN7OdHH1hzXkqMZKgSNuZ7pNfGpGonacTozTNT7EqhXfC3bm7JZ5++mGQKE6QwR9e1QDFFQJkTgqiCbiPEk0DelxfawbMpEx27zMX7zP7qS3f2sHWq+isev7NCSR8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742296940; c=relaxed/simple; bh=AzupuCmBKbXzpVZpmNKG8W/iWTDbDRRSsor7u3gyJRo=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=WjT6tmSHwepN7ebVfeGIwYG8Ep+QfCUqoxAi23OCL545uioVF8mdnHpeTgxMHMenpZYCw9nYLA+zgZBmpyYG4etNcMjRYtmJyhfTJL6eiIcUt5sLBFWP9UZnI2YWH37IqjWQEL7U4Ns+XglFcEH40iDCyhvwhfeTOHSF6c3gnGM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com; spf=pass smtp.mailfrom=qq.com; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b=Pb/avz7U; arc=none smtp.client-ip=203.205.221.236 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="Pb/avz7U" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1742296633; bh=oZEfS1bNjMZkXP6FUhmebj3gfnVYJH0W3uaf7UKOF0s=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Pb/avz7UiTtT2he3iAmEL1HzLyehalc/XJd8AmvgllDzDPTz4RVSI1g3mzcLKa5cT e3jnCi8qrju3NGeY7oCxrFtBLf+BjLuOxjXrDqKS+onoAzcsEWSkeAGcqBgqj3kJR+ aOs24h1ixltXIwzwbzxBBGtNsxN3vLKTP8D1tjQA= Received: from pek-lxu-l1.wrs.com ([114.244.57.157]) by newxmesmtplogicsvrszgpua8-1.qq.com (NewEsmtp) with SMTP id 44A96096; Tue, 18 Mar 2025 19:17:10 +0800 X-QQ-mid: xmsmtpt1742296630t1572ysac Message-ID: X-QQ-XMAILINFO: NRWf2ABhDVMHcT4RxQxm55dlORXT/07+7y75NZKRr7AyH8/TyoTplfa7+45mAh 51sCLQOM2bw2LzgBDsoeEKGV0e7lwCj0LPQ2qLeEprp/CXUmc9GLMHIUrej2Q6MQByKCM9ljuBX7 bvLuH98WoHBhDTsSI8Pc8SkMbWSk4RwHDWYt7pFf8jWwXddM2I0Nd/fqdRiN7/zVVZT6+MVqgm2d uj7z3SlQo3O0/CfU02iuJamEtNNrQxXJaaiVLgrJT5MmQr78FRcQw6o6mlbOsXuBbzgOpICU55Ay Wx91QHdoQxliD5cZW6CkIvFizoRzEBmnpo/kd1u5eSxKfLBWz9qZj1m6qwOHwbhRtZpK0EPH8hi3 eZyI0l5yy7YZ84UtYTFdWPHyhwYYHiQoQyERTKO6BcAAiX24+5Is0Tcw7Bf6MzwMNL9ws3KOG1q2 gwHWMCVgOIXxy38kyTigptjBM87BuyLGITpZNsNOD36k6YybeaWGFd63PUJZZeGTiMF27hRgOrz3 aL73HBgCuAVqKYjroZ/loJazUTocAKZqpTeSE7qhNwDfePLuewH3ML4+4YmpOBMk25wVvj2vrTNk ZLrawyMVYssQtTVJ6uZgZoI/g3ZZjEk1cnsXVAhZjp+O1vZ7J6iWAgtVqDD5dqY0DQzeHUSI4gQL hQg5pggh37x/tj1ApqzVr9IXD/r3Cq3RJ2PSpYEjvk9Bfae+Tldq1wFMzbZca29LBQBv7crZP7UC fwpO3QI8T/tsd0IVVMQwJfn57tvKRZ8aRzufqyezUD4A4mP1f9HdlNUYNwBnJxfrWsRmkm55YTKm JW3NByRhjAHJCqm7C7NeQPQtsjhN3NZmzDidoYN3FMs4mykb6D4FCe+M8pck8XSxssDJh1DvHS/m +1HBT4nbqr+KV8kZB1OGlgWM6oiECIY22WqFoxD/4qbjpY1pv1eb8+lReIX56C94zSeS+k/BjarU ZCcCi41fE3DjMimerrSQ== X-QQ-XMRINFO: OWPUhxQsoeAVDbp3OJHYyFg= From: Edward Adam Davis To: dhowells@redhat.com Cc: enjuk@amazon.com, linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org, marc.dionne@auristor.com, syzbot+76a6f18e3af82e84f264@syzkaller.appspotmail.com, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [afs?] general protection fault in afs_atcell_get_link Date: Tue, 18 Mar 2025 19:17:11 +0800 X-OQ-MSGID: <20250318111710.3589229-2-eadavis@qq.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <2477988.1742293427@warthog.procyon.org.uk> References: <2477988.1742293427@warthog.procyon.org.uk> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Tue, 18 Mar 2025 10:23:47 +0000, David Howells wrote: > commit 3ce74c88a6708de1842dbebc10f83013718324d0 > Author: David Howells > Date: Tue Mar 18 10:18:29 2025 +0000 My fix already sent. https://lore.kernel.org/all/tencent_8CA5671E3C533638973237484A0874917609@qq.com/ > > afs: Fix afs_atcell_get_link() to check if ws_cell is unset first > > Fix afs_atcell_get_link() to check if the workstation cell is unset before > doing the RCU pathwalk bit where we dereference that. > > Fixes: 823869e1e616 ("afs: Fix afs_atcell_get_link() to handle RCU pathwalk") > Reported-by: syzbot+76a6f18e3af82e84f264@syzkaller.appspotmail.com > Signed-off-by: David Howells > cc: Marc Dionne > cc: linux-afs@lists.infradead.org > cc: linux-fsdevel@vger.kernel.org BR, Edward