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Merge 'akpm' patch series
[pandora-kernel.git]
/
arch
/
xtensa
/
kernel
/
ptrace.c
diff --git
a/arch/xtensa/kernel/ptrace.c
b/arch/xtensa/kernel/ptrace.c
index
c72c947
..
a0d042a
100644
(file)
--- a/
arch/xtensa/kernel/ptrace.c
+++ b/
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);