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-rw-r--r--arch/powerpc/kernel/ptrace.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 7673e98..2a9fe97 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -530,15 +530,21 @@ static int gpr32_set(struct task_struct *target,
--count;
}
- if (kbuf)
+ if (kbuf) {
for (; count > 0 && pos <= PT_MAX_PUT_REG; --count)
regs[pos++] = *k++;
- else
+ for (; count > 0 && pos < PT_TRAP; --count, ++pos)
+ ++k;
+ } else {
for (; count > 0 && pos <= PT_MAX_PUT_REG; --count) {
if (__get_user(reg, u++))
return -EFAULT;
regs[pos++] = reg;
}
+ for (; count > 0 && pos < PT_TRAP; --count, ++pos)
+ if (__get_user(reg, u++))
+ return -EFAULT;
+ }
if (count > 0 && pos == PT_TRAP) {
if (kbuf)
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