From patchwork Wed Dec 18 01:42:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guixin Liu X-Patchwork-Id: 851973 Received: from out30-130.freemail.mail.aliyun.com (out30-130.freemail.mail.aliyun.com [115.124.30.130]) (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 1747638F83 for ; Wed, 18 Dec 2024 01:42:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.130 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734486154; cv=none; b=ITqKg/SGYn3HHojvXCSNIMkMAX7vM7HNIwGfjohdwjYDipylEsNC3g4jqtstuXYI94xDsHTgt5PbXnw2kI2SKC1awpVwScps2m+Z+/smUaEyf+zPz6uIRljqTWBQEWDy6IlKOmlA5FKxbPJBKEjF0bBATdRwS5XRgRJMZIzYnwQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734486154; c=relaxed/simple; bh=9DDhqZ5GL3bWLF2JQ/8wk/kYkmV0oNMb4pEvDyyutGs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YuSc1HgrnYqlIR5IA7gFBy0DCllUUiqvEWNLnT5xKoDG13YIC+KTR8xrj81gzd43ajIDFNfIyA4Y4Ia9R0g0txDGswvKbV20GjkAswi/+6i8EmsdRjfLRIu7kqzkgUsoy2Nk9wtMEjzDJcQVn0vryZyg2HCLxrEjBdaDIgfUg1Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; spf=pass smtp.mailfrom=linux.alibaba.com; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b=NzDwlEa3; arc=none smtp.client-ip=115.124.30.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b="NzDwlEa3" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1734486149; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=st9j5bVLlDLGnivy9glLf5EF/HW2mUncSqB5KfxcHAo=; b=NzDwlEa3uiM1KYQ4cw4wmxSZ+whAx9swIAMpg8tEJBFS6o4Q8XRPNBZlKZ3yQ1qkD2t+8d34SEjlXO8ZahNIiMX6kmClxWnzR0WebuWQoo+lr1qH1RrjPeORok5jH3BZDANu98J2ArlFwSeRs0toM76MGIhM9QSfGyHNSXEFwro= Received: from localhost(mailfrom:kanie@linux.alibaba.com fp:SMTPD_---0WLkjHmh_1734486144 cluster:ay36) by smtp.aliyun-inc.com; Wed, 18 Dec 2024 09:42:29 +0800 From: Guixin Liu To: Alim Akhtar , Avri Altman , Bart Van Assche , "James E . J . Bottomley" , "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org Subject: [PATCH v2 2/2] scsi: ufs: set bsg_queue to NULL after remove Date: Wed, 18 Dec 2024 09:42:14 +0800 Message-ID: <20241218014214.64533-3-kanie@linux.alibaba.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241218014214.64533-1-kanie@linux.alibaba.com> References: <20241218014214.64533-1-kanie@linux.alibaba.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Currently, this does not cause any issues, but I believe it is necessary to set bsg_queue to NULL after removing it to prevent potential use-after-free (UAF) access. Signed-off-by: Guixin Liu Reviewed-by: Avri Altman --- drivers/ufs/core/ufs_bsg.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/ufs/core/ufs_bsg.c b/drivers/ufs/core/ufs_bsg.c index 58023f735c19..8d4ad0a3f2cf 100644 --- a/drivers/ufs/core/ufs_bsg.c +++ b/drivers/ufs/core/ufs_bsg.c @@ -216,6 +216,7 @@ void ufs_bsg_remove(struct ufs_hba *hba) return; bsg_remove_queue(hba->bsg_queue); + hba->bsg_queue = NULL; device_del(bsg_dev); put_device(bsg_dev);