[PATCH v5 1/7] remoteproc: debugfs: Check of invalid 'count' value
From: Lee Jones <hidden>
Date: 2016-01-12 12:49:36
Also in:
linux-arm-kernel, lkml
Subsystem:
remote processor (remoteproc) subsystem, the rest · Maintainers:
Bjorn Andersson, Mathieu Poirier, Linus Torvalds
If 'count' value is invalid, return early with an error. Signed-off-by: Lee Jones <redacted> --- drivers/remoteproc/remoteproc_debugfs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/remoteproc/remoteproc_debugfs.c b/drivers/remoteproc/remoteproc_debugfs.c
index 9d30809..f63464c 100644
--- a/drivers/remoteproc/remoteproc_debugfs.c
+++ b/drivers/remoteproc/remoteproc_debugfs.c@@ -156,8 +156,8 @@ rproc_recovery_write(struct file *filp, const char __user *user_buf, char buf[10]; int ret; - if (count > sizeof(buf)) - return count; + if (count > sizeof(buf) || count <= 0) + return -EINVAL; ret = copy_from_user(buf, user_buf, count); if (ret)
--
1.9.1