sparc/ptrace: Preserve previous registers for short regset write
Ensure that if userspace supplies insufficient data to PTRACE_SETREGSET to fill all the registers, the thread's old registers are preserved. Signed-off-by: Dave Martin <Dave.Martin@arm.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -350,7 +350,7 @@ static int genregs64_set(struct task_struct *target,
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}
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if (!ret) {
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unsigned long y;
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unsigned long y = regs->y;
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ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
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&y,
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