futex: Fix compat_futex to be same as futex for REQUEUE_PI
Dinakar Guniguntala [Mon, 10 Aug 2009 13:01:42 +0000 (18:01 +0530)]
Need to add the REQUEUE_PI checks to the compat_sys_futex API
as well to ensure 32 bit requeue's work fine on a 64 bit
system. Patch is against latest tip

Signed-off-by: Dinakar Guniguntala <dino@in.ibm.com>
Cc: Darren Hart <dvhltc@us.ibm.com>
LKML-Reference: <20090810130142.GA23619@in.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

kernel/futex_compat.c

index d607a5b..2357165 100644 (file)
@@ -180,7 +180,8 @@ asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
        int cmd = op & FUTEX_CMD_MASK;
 
        if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI ||
-                     cmd == FUTEX_WAIT_BITSET)) {
+                     cmd == FUTEX_WAIT_BITSET ||
+                     cmd == FUTEX_WAIT_REQUEUE_PI)) {
                if (get_compat_timespec(&ts, utime))
                        return -EFAULT;
                if (!timespec_valid(&ts))
@@ -191,7 +192,8 @@ asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
                        t = ktime_add_safe(ktime_get(), t);
                tp = &t;
        }
-       if (cmd == FUTEX_REQUEUE || cmd == FUTEX_CMP_REQUEUE)
+       if (cmd == FUTEX_REQUEUE || cmd == FUTEX_CMP_REQUEUE ||
+           cmd == FUTEX_CMP_REQUEUE_PI || cmd == FUTEX_WAKE_OP)
                val2 = (int) (unsigned long) utime;
 
        return do_futex(uaddr, op, val, tp, uaddr2, val2, val3);