staging: most: fix mbo leak (8a742f78) · Commits · 戴 / test

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>

drivers/staging/most/aim-cdev/cdev.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;

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