x86/fsgsbase/64: Use TASK_SIZE_MAX for FSBASE/GSBASE upper limits

[cascardo/linux.git] / arch / x86 / kernel / process_64.c

diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 6b16c36..6e789ca 100644 (file)
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -532,7 +532,7 @@ long do_arch_prctl(struct task_struct *task, int code, unsigned long addr)
 
        switch (code) {
        case ARCH_SET_GS:
-               if (addr >= TASK_SIZE_OF(task))
+               if (addr >= TASK_SIZE_MAX)
                        return -EPERM;
                cpu = get_cpu();
                task->thread.gsindex = 0;
@@ -546,7 +546,7 @@ long do_arch_prctl(struct task_struct *task, int code, unsigned long addr)
        case ARCH_SET_FS:
                /* Not strictly needed for fs, but do it for symmetry
                   with gs */
-               if (addr >= TASK_SIZE_OF(task))
+               if (addr >= TASK_SIZE_MAX)
                        return -EPERM;
                cpu = get_cpu();
                task->thread.fsindex = 0;