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pti: double-free security PTI fix
This patch fixes a double-free error that will not always be seen unless /dev/pti char interface is stressed. Signed-off-by: J Freyensee <james_p_freyensee@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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1 changed files with 3 additions and 2 deletions
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@ -317,7 +317,8 @@ EXPORT_SYMBOL_GPL(pti_request_masterchannel);
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* a master, channel ID address
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* used to write to PTI HW.
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*
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* @mc: master, channel apeture ID address to be released.
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* @mc: master, channel apeture ID address to be released. This
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* will de-allocate the structure via kfree().
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*/
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void pti_release_masterchannel(struct pti_masterchannel *mc)
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{
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@ -581,7 +582,7 @@ static int pti_char_open(struct inode *inode, struct file *filp)
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static int pti_char_release(struct inode *inode, struct file *filp)
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{
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pti_release_masterchannel(filp->private_data);
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kfree(filp->private_data);
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filp->private_data = NULL;
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return 0;
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}
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