A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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staging: most: fix mbo leak

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This patch fixes a potential MBO leak in case function aim_read()
exits right after the MBO has been fetched from kfifo and before
it has been saved to the variable stacked_mbo.

Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christian Gromm 2015-12-22 10:52:47 +01:00 • committed by Greg Kroah-Hartman
commit 8a742f785b
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/most/aim-cdev/cdev.c
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@ -237,6 +237,7 @@ aim_read(struct file *filp, char __user *buf, size_t count, loff_t *offset)
(!channel->dev))))
return -ERESTARTSYS;
}
channel->stacked_mbo = mbo;
start_copy:
/* make sure we don't submit to gone devices */
@ -258,7 +259,6 @@ start_copy:
if (count < mbo->processed_length) {
channel->mbo_offs = copied;
channel->stacked_mbo = mbo;
} else {
most_put_mbo(mbo);
channel->mbo_offs = 0;