mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-29 13:53:33 +00:00
remoteproc: Fix count check in rproc_coredump_write()
commitf89672cc36
upstream. Check count for 0, to avoid a potential underflow. Make the check the same as the one in rproc_recovery_write(). Fixes:3afdc59e43
("remoteproc: Add coredump debugfs entry") Signed-off-by: Alistair Delva <adelva@google.com> Cc: Rishabh Bhatnagar <rishabhb@codeaurora.org> Cc: stable@vger.kernel.org Cc: Ohad Ben-Cohen <ohad@wizery.com> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Sibi Sankar <sibis@codeaurora.org> Cc: linux-remoteproc@vger.kernel.org Cc: kernel-team@android.com Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20220119232139.1125908-1-adelva@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
015164bba9
commit
11572dad9f
1 changed files with 1 additions and 1 deletions
|
@ -76,7 +76,7 @@ static ssize_t rproc_coredump_write(struct file *filp,
|
|||
int ret, err = 0;
|
||||
char buf[20];
|
||||
|
||||
if (count > sizeof(buf))
|
||||
if (count < 1 || count > sizeof(buf))
|
||||
return -EINVAL;
|
||||
|
||||
ret = copy_from_user(buf, user_buf, count);
|
||||
|
|
Loading…
Reference in a new issue