X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=kernel%2Ffutex_compat.c;h=133d558db452e38b68c664e9560457f7c3902fc9;hb=3e01dfce1387f8bec41018f0d7b42fd88ad4163f;hp=2c2e2954b713b2681a5bf120c0097cb2c2affc8c;hpb=e2cd68f7cd07cc898581bd736ebdd6f2c2323c2e;p=linux-2.6-omap-h63xx.git

diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
index 2c2e2954b71..133d558db45 100644
--- a/kernel/futex_compat.c
+++ b/kernel/futex_compat.c
@@ -8,6 +8,7 @@
 
 #include <linux/linkage.h>
 #include <linux/compat.h>
+#include <linux/nsproxy.h>
 #include <linux/futex.h>
 
 #include <asm/uaccess.h>
@@ -29,6 +30,15 @@ fetch_robust_entry(compat_uptr_t *uentry, struct robust_list __user **entry,
 	return 0;
 }
 
+static void __user *futex_uaddr(struct robust_list *entry,
+				compat_long_t futex_offset)
+{
+	compat_uptr_t base = ptr_to_compat(entry);
+	void __user *uaddr = compat_ptr(base + futex_offset);
+
+	return uaddr;
+}
+
 /*
  * Walk curr->robust_list (very carefully, it's a userspace list!)
  * and mark any locks found there dead, and notify any waiters.
@@ -75,11 +85,12 @@ void compat_exit_robust_list(struct task_struct *curr)
 		 * A pending lock might already be on the list, so
 		 * dont process it twice:
 		 */
-		if (entry != pending)
-			if (handle_futex_death((void __user *)entry + futex_offset,
-						curr, pi))
-				return;
+		if (entry != pending) {
+			void __user *uaddr = futex_uaddr(entry, futex_offset);
 
+			if (handle_futex_death(uaddr, curr, pi))
+				return;
+		}
 		if (rc)
 			return;
 		uentry = next_uentry;
@@ -93,9 +104,11 @@ void compat_exit_robust_list(struct task_struct *curr)
 
 		cond_resched();
 	}
-	if (pending)
-		handle_futex_death((void __user *)pending + futex_offset,
-				   curr, pip);
+	if (pending) {
+		void __user *uaddr = futex_uaddr(pending, futex_offset);
+
+		handle_futex_death(uaddr, curr, pip);
+	}
 }
 
 asmlinkage long
@@ -124,7 +137,7 @@ compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
 
 		ret = -ESRCH;
 		read_lock(&tasklist_lock);
-		p = find_task_by_pid(pid);
+		p = find_task_by_vpid(pid);
 		if (!p)
 			goto err_unlock;
 		ret = -EPERM;
@@ -154,7 +167,8 @@ asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val,
 	int val2 = 0;
 	int cmd = op & FUTEX_CMD_MASK;
 
-	if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI)) {
+	if (utime && (cmd == FUTEX_WAIT || cmd == FUTEX_LOCK_PI ||
+		      cmd == FUTEX_WAIT_BITSET)) {
 		if (get_compat_timespec(&ts, utime))
 			return -EFAULT;
 		if (!timespec_valid(&ts))