From 09f663c2467e37df34148da5e9947fc114f2f0bf Mon Sep 17 00:00:00 2001 From: Dominique Martinet Date: Fri, 24 Aug 2018 11:53:12 +0900 Subject: [PATCH] mcctrl procfs: check entry was returned before using it Change-Id: If66e95d217d1045e2e65bc5978bba020e3fa7c0d Refs: #1116 --- executer/kernel/mcctrl/procfs.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/executer/kernel/mcctrl/procfs.c b/executer/kernel/mcctrl/procfs.c index 27244412..009750c4 100644 --- a/executer/kernel/mcctrl/procfs.c +++ b/executer/kernel/mcctrl/procfs.c @@ -294,6 +294,8 @@ get_base_entry(int osnum) if(!e){ e = add_procfs_entry(NULL, name, S_IFDIR | 0555, uid, gid, NULL); + if (!e) + return NULL; e->osnum = osnum; } return e; @@ -429,6 +431,8 @@ proc_exe_link(int osnum, int pid, const char *path) e = add_procfs_entry(parent, "exe", S_IFLNK | 0777, uid, gid, path); + if (!e) + goto out; e->data = kmalloc(strlen(path) + 1, GFP_KERNEL); strcpy(e->data, path); task = find_procfs_entry(parent, "task"); @@ -437,6 +441,7 @@ proc_exe_link(int osnum, int pid, const char *path) uid, gid, path); } } +out: up(&procfs_file_list_lock); }