From f634460c90751da21745eec7a220edf76c7d0c76 Mon Sep 17 00:00:00 2001 From: Lucas De Marchi Date: Tue, 30 Apr 2013 15:28:03 -0700 Subject: kmod: split call to call_usermodehelper_fns() Use call_usermodehelper_setup() + call_usermodehelper_exec() instead of calling call_usermodehelper_fns(). In case the latter returns -ENOMEM the cleanup function may had not been called - in this case we would not free argv and module_name. Signed-off-by: Lucas De Marchi Cc: Oleg Nesterov Cc: David Howells Cc: James Morris Cc: Al Viro Cc: Tejun Heo Cc: "Rafael J. Wysocki" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/kmod.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'kernel') diff --git a/kernel/kmod.c b/kernel/kmod.c index e11ea14ac011..9941a4f155d1 100644 --- a/kernel/kmod.c +++ b/kernel/kmod.c @@ -77,6 +77,7 @@ static void free_modprobe_argv(struct subprocess_info *info) static int call_modprobe(char *module_name, int wait) { + struct subprocess_info *info; static char *envp[] = { "HOME=/", "TERM=linux", @@ -98,8 +99,15 @@ static int call_modprobe(char *module_name, int wait) argv[3] = module_name; /* check free_modprobe_argv() */ argv[4] = NULL; - return call_usermodehelper_fns(modprobe_path, argv, envp, - wait | UMH_KILLABLE, NULL, free_modprobe_argv, NULL); + info = call_usermodehelper_setup(modprobe_path, argv, envp, GFP_KERNEL, + NULL, free_modprobe_argv, NULL); + if (!info) + goto free_module_name; + + return call_usermodehelper_exec(info, wait | UMH_KILLABLE); + +free_module_name: + kfree(module_name); free_argv: kfree(argv); out: -- cgit v1.2.3