linux-kernel - [PATCH] tools/hv: Add memory allocation check in hv_fcopy

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Message-Id: <20240828100031.3833-1-zhujun2@cmss.chinamobile.com>
Date: Wed, 28 Aug 2024 03:00:31 -0700
From: Zhu Jun <zhujun2@...s.chinamobile.com>
To: kys@...rosoft.com
Cc: haiyangz@...rosoft.com,
	wei.liu@...nel.org,
	decui@...rosoft.com,
	linux-hyperv@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	zhujun2@...s.chinamobile.com
Subject: [PATCH] tools/hv: Add memory allocation check in hv_fcopy_start

Added checks for `file_name` and `path_name` memory allocation failures,
with error logging and process exit on failure.

Signed-off-by: Zhu Jun <zhujun2@...s.chinamobile.com>
---
 tools/hv/hv_fcopy_uio_daemon.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/hv/hv_fcopy_uio_daemon.c b/tools/hv/hv_fcopy_uio_daemon.c
index 3ce316cc9f97..2efdf8d28e9c 100644
--- a/tools/hv/hv_fcopy_uio_daemon.c
+++ b/tools/hv/hv_fcopy_uio_daemon.c
@@ -295,6 +295,10 @@ static int hv_fcopy_start(struct hv_start_fcopy *smsg_in)
 
 	file_name = (char *)malloc(file_size * sizeof(char));
 	path_name = (char *)malloc(path_size * sizeof(char));
+	if (!file_name || !path_name) {
+		syslog(LOG_ERR, "Can't allocate memory!");
+		exit(EXIT_FAILURE);
+	}
 
 	wcstoutf8(file_name, (__u16 *)in_file_name, file_size);
 	wcstoutf8(path_name, (__u16 *)in_path_name, path_size);
-- 
2.17.1