From: Dave Martin <[email protected]> commit d3805c546b275c8cc7d40f759d029ae92c7175f2 upstream.
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 <[email protected]> Acked-by: David S. Miller <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> Signed-off-by: Willy Tarreau <[email protected]> --- arch/sparc/kernel/ptrace_64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c index 7ff45e4..875ddf0 100644 --- a/arch/sparc/kernel/ptrace_64.c +++ b/arch/sparc/kernel/ptrace_64.c @@ -308,7 +308,7 @@ static int genregs64_set(struct task_struct *target, } if (!ret) { - unsigned long y; + unsigned long y = regs->y; ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &y, -- 2.8.0.rc2.1.gbe9624a
