---

yaml --- r: 258923 b: refs/heads/master c: 0d0138e h: refs/heads/master i: 258921: e583987 258919: c71623c v: v3
git-mirror · Jul 26, 2011 · 176c359 · 176c359
1 parent 768d308
commit 176c359
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Showing 2 changed files with 4 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 67db392d1124e14684e23deb572de2a63b9b3b69
+refs/heads/master: 0d0138ebe24b94065580bd2601f8bb7eb6152f56
diff --git a/trunk/arch/xtensa/kernel/ptrace.c b/trunk/arch/xtensa/kernel/ptrace.c
@@ -147,6 +147,9 @@ int ptrace_setxregs(struct task_struct *child, void __user *uregs)
 	elf_xtregs_t *xtregs = uregs;
 	int ret = 0;
 
+	if (!access_ok(VERIFY_READ, uregs, sizeof(elf_xtregs_t)))
+		return -EFAULT;
+
 #if XTENSA_HAVE_COPROCESSORS
 	/* Flush all coprocessors before we overwrite them. */
 	coprocessor_flush_all(ti);