[PATCH 11/12] misc/lsattr: check whether path is NULL in, lsattr_dir_proc()
From: Wu Guanghao <hidden>
Date: 2021-05-24 11:25:59
Subsystem:
the rest · Maintainer:
Linus Torvalds
In lsattr_dir_proc(), if malloc() return NULL, it will cause a segmentation fault problem. Signed-off-by: Zhiqiang Liu <redacted> Signed-off-by: Wu Guanghao <redacted> --- misc/lsattr.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/misc/lsattr.c b/misc/lsattr.c
index 0d954376..f3212069 100644
--- a/misc/lsattr.c
+++ b/misc/lsattr.c@@ -144,6 +144,12 @@ static int lsattr_dir_proc (const char * dir_name, struct dirent * de, int dir_len = strlen(dir_name); path = malloc(dir_len + strlen (de->d_name) + 2); + if (!path) { + fprintf(stderr, "%s", + _("Couldn't allocate path variable " + "in lsattr_dir_proc")); + return -1; + } if (dir_len && dir_name[dir_len-1] == '/') sprintf (path, "%s%s", dir_name, de->d_name);
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