From: Alexander Shishkin <alexander.shishkin@linux.intel.com>
To: Greg KH <greg@kroah.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>,
Chunyan Zhang <zhang.chunyan@linaro.org>,
laurent.fert@intel.com, yann.fouassier@intel.com,
linux-kernel@vger.kernel.org,
Alexander Shishkin <alexander.shishkin@linux.intel.com>
Subject: [QUEUED v20160408 17/18] intel_th: msu: Set fops::owner to prevent module from unloading
Date: Fri, 8 Apr 2016 17:56:40 +0300 [thread overview]
Message-ID: <1460127401-30801-18-git-send-email-alexander.shishkin@linux.intel.com> (raw)
In-Reply-To: <1460127401-30801-1-git-send-email-alexander.shishkin@linux.intel.com>
Right now it's possible to unload the msu driver while its character
device is open. Prevent it by setting fops::owner, which will result
in the module reference being held while the device node is open.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
---
drivers/hwtracing/intel_th/msu.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index ee153067e1..bcc3b47133 100644
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -1253,6 +1253,7 @@ static const struct file_operations intel_th_msc_fops = {
.read = intel_th_msc_read,
.mmap = intel_th_msc_mmap,
.llseek = no_llseek,
+ .owner = THIS_MODULE,
};
static int intel_th_msc_init(struct msc *msc)
--
2.8.0.rc3
next prev parent reply other threads:[~2016-04-08 14:57 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-08 14:56 [QUEUED v20160408 00/18] stm class/intel_th: Patches in my queue Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 01/18] MAINTAINERS: Add a git tree for the stm class Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 02/18] stm class: Fix integer boundary checks for master range Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 03/18] stm class: dummy_stm: Make nr_dummies parameter read-only Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 04/18] stm class: stm_heartbeat: Make nr_devs " Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 05/18] stm class: Remove a pointless line Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 06/18] stm class: Do not leak the chrdev in error path Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 07/18] stm class: Fix stm device initialization order Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 08/18] stm class: Remove unnecessary pointer increment Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 09/18] intel_th: pti: Do remove sysfs group on device removal Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 10/18] intel_th: msu: Handle kstrndup() failure Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 11/18] intel_th: Allow subdevice drivers to bring in own attribute groups Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 12/18] intel_th: msu: Create sysfs attributes using core driver's facility Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 13/18] intel_th: pti: " Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 14/18] intel_th: Fix activating a subdevice without a driver Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 15/18] intel_th: msu: Serialize enabling/disabling Alexander Shishkin
2016-04-08 14:56 ` [QUEUED v20160408 16/18] intel_th: Hold output driver module reference while capture is active Alexander Shishkin
2016-04-08 14:56 ` Alexander Shishkin [this message]
2016-04-08 14:56 ` [QUEUED v20160408 18/18] intel_th: msu: Release resources on removal Alexander Shishkin
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