linux-kernel - [PATCH] remoteproc: sysfs: Use scnprintf instead of sprintf

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Date:   Wed,  3 Mar 2021 12:01:38 -0800
From:   Siddharth Gupta <sidgup@...eaurora.org>
To:     ohad@...ery.com, bjorn.andersson@...aro.org,
        linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Raghavendra Rao Ananta <rananta@...eaurora.org>,
        Siddharth Gupta <sidgup@...eaurora.org>
Subject: [PATCH] remoteproc: sysfs: Use scnprintf instead of sprintf

From: Raghavendra Rao Ananta <rananta@...eaurora.org>

For security reasons scnprintf() is preferred over sprintf().
Hence, convert the remoteproc's sysfs show functions accordingly.

Signed-off-by: Raghavendra Rao Ananta <rananta@...eaurora.org>
Signed-off-by: Siddharth Gupta <sidgup@...eaurora.org>
---
 drivers/remoteproc/remoteproc_sysfs.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/remoteproc/remoteproc_sysfs.c b/drivers/remoteproc/remoteproc_sysfs.c
index 1dbef89..853f569 100644
--- a/drivers/remoteproc/remoteproc_sysfs.c
+++ b/drivers/remoteproc/remoteproc_sysfs.c
@@ -15,7 +15,8 @@ static ssize_t recovery_show(struct device *dev,
 {
 	struct rproc *rproc = to_rproc(dev);
 
-	return sprintf(buf, "%s", rproc->recovery_disabled ? "disabled\n" : "enabled\n");
+	return scnprintf(buf, PAGE_SIZE, "%s",
+			 rproc->recovery_disabled ? "disabled\n" : "enabled\n");
 }
 
 /*
@@ -82,7 +83,7 @@ static ssize_t coredump_show(struct device *dev,
 {
 	struct rproc *rproc = to_rproc(dev);
 
-	return sprintf(buf, "%s\n", rproc_coredump_str[rproc->dump_conf]);
+	return scnprintf(buf, PAGE_SIZE, "%s\n", rproc_coredump_str[rproc->dump_conf]);
 }
 
 /*
-- 
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