x86/smpboot: Init apic mapping before usage

[cascardo/linux.git] / kernel / sys.c

diff --git a/kernel/sys.c b/kernel/sys.c
index cf8ba54..89d5be4 100644 (file)
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -2246,7 +2246,8 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
        case PR_SET_THP_DISABLE:
                if (arg3 || arg4 || arg5)
                        return -EINVAL;
-               down_write(&me->mm->mmap_sem);
+               if (down_write_killable(&me->mm->mmap_sem))
+                       return -EINTR;
                if (arg2)
                        me->mm->def_flags |= VM_NOHUGEPAGE;
                else