There is exactly one argument so there is nothing to split. All split_argv does now is cause confusion and avoid the need for a cast when passing a "const char *" string to call_usermodehelper_setup. So avoid confusion and the possibility of an odd driver name causing problems by just using a fixed argv array with a cast in the call to call_usermodehelper_setup. v1: https://lkml.kernel.org/r/87sged3a9n.fsf_-_@xxxxxxxxxxxxxxxxxxxxx Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx> --- kernel/usermode_driver.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/kernel/usermode_driver.c b/kernel/usermode_driver.c index cd136f86f799..0b35212ffc3d 100644 --- a/kernel/usermode_driver.c +++ b/kernel/usermode_driver.c @@ -160,27 +160,21 @@ static void umd_cleanup(struct subprocess_info *info) int fork_usermode_driver(struct umd_info *info) { struct subprocess_info *sub_info; - char **argv = NULL; + const char *argv[] = { info->driver_name, NULL }; int err; if (WARN_ON_ONCE(info->tgid)) return -EBUSY; err = -ENOMEM; - argv = argv_split(GFP_KERNEL, info->driver_name, NULL); - if (!argv) - goto out; - - sub_info = call_usermodehelper_setup(info->driver_name, argv, NULL, - GFP_KERNEL, + sub_info = call_usermodehelper_setup(info->driver_name, + (char **)argv, NULL, GFP_KERNEL, umd_setup, umd_cleanup, info); if (!sub_info) goto out; err = call_usermodehelper_exec(sub_info, UMH_WAIT_EXEC); out: - if (argv) - argv_free(argv); return err; } EXPORT_SYMBOL_GPL(fork_usermode_driver); -- 2.25.0
