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staging: logger: hold mutex while removing reader

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The readers list is traversed under the log->mutex lock
(for example from fix_up_readers()), but the deletion of
elements from this list is not being done under this lock.

Cc: Brian Swetland <swetland@google.com>
Cc: Dima Zavin <dima@android.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rabin Vincent 2012-02-22 15:58:00 +05:30 committed by Greg Kroah-Hartman
parent 6f6c4dc040
commit 47de87a234
1 changed files with 5 additions and 0 deletions
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5
drivers/staging/android/logger.c
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@ -459,7 +459,12 @@ static int logger_release(struct inode *ignored, struct file *file)
{
if (file->f_mode & FMODE_READ) {
struct logger_reader *reader = file->private_data;
struct logger_log *log = reader->log;
mutex_lock(&log->mutex);
list_del(&reader->list);
mutex_unlock(&log->mutex);
kfree(reader);
}