x86/mpx: Use compatible types in comparison to fix sparse error

info->si_addr is of type void __user *, so it should be compared against
something from the same address space.

This fixes the following sparse error:

  arch/x86/mm/mpx.c:296:27: error: incompatible types in comparison expression (different address spaces)

Signed-off-by: Tobias Klauser <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Signed-off-by: Ingo Molnar <[email protected]>

diff --git a/arch/x86/mm/mpx.c b/arch/x86/mm/mpx.c
index 324e5713d386f0ed235b0394f71c0290df870fae..af59f808742f94df84ab0aaed1ac2db3ea27e016 100644 (file)
--- a/arch/x86/mm/mpx.c
+++ b/arch/x86/mm/mpx.c
@@ -293,7 +293,7 @@ siginfo_t *mpx_generate_siginfo(struct pt_regs *regs)
         * We were not able to extract an address from the instruction,
         * probably because there was something invalid in it.
         */
-       if (info->si_addr == (void *)-1) {
+       if (info->si_addr == (void __user *)-1) {
                err = -EINVAL;
                goto err_out;
        }