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Date: Tue, 12 Jan 2016 12:46:15 +0000 From: Lee Jones <lee.jones@...aro.org> To: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Cc: kernel@...inux.com, maxime.coquelin@...com, ohad@...ery.com, devicetree@...r.kernel.org, Nathan_Lynch@...tor.com, f.fainelli@...il.com, ludovic.barre@...com, s-anna@...com, Lee Jones <lee.jones@...aro.org> Subject: [PATCH v5 1/7] remoteproc: debugfs: Check of invalid 'count' value If 'count' value is invalid, return early with an error. Signed-off-by: Lee Jones <lee.jones@...aro.org> --- 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
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