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rpmsg: char: release allocated memory 

commit bbe692e349 upstream.

In rpmsg_eptdev_write_iter, if copy_from_iter_full fails the allocated
buffer needs to be released.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Navid Emamdoost 2019-09-16 22:31:23 -05:00 committed by Greg Kroah-Hartman
parent 3fe1ced40e
commit 5bbe72cf48
1 changed files with 4 additions and 2 deletions
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6
drivers/rpmsg/rpmsg_char.c
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@ -227,8 +227,10 @@ static ssize_t rpmsg_eptdev_write_iter(struct kiocb *iocb,
if (!kbuf)
return -ENOMEM;
if (!copy_from_iter_full(kbuf, len, from))
return -EFAULT;
if (!copy_from_iter_full(kbuf, len, from)) {
ret = -EFAULT;
goto free_kbuf;
}
if (mutex_lock_interruptible(&eptdev->ept_lock)) {
ret = -ERESTARTSYS;