From: Fushuai Wang <[email protected]> Use copy_from_user_nul() instead of copy_from_user() to simplify the code.
No functional change. Signed-off-by: Fushuai Wang <[email protected]> --- arch/x86/mm/tlb.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index f5b93e01e347..ae81e5cb510e 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -1807,10 +1807,9 @@ static ssize_t tlbflush_write_file(struct file *file, int ceiling; len = min(count, sizeof(buf) - 1); - if (copy_from_user(buf, user_buf, len)) + if (copy_from_user_nul(buf, user_buf, len)) return -EFAULT; - buf[len] = '\0'; if (kstrtoint(buf, 0, &ceiling)) return -EINVAL; -- 2.36.1
