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(parent: 0ba34c8) | patch
sparc/ptrace: Preserve previous registers for short regset write
authorDave Martin <Dave.Martin@arm.com>
Mon, 27 Mar 2017 14:10:59 +0000 (15:10 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 31 Mar 2017 08:31:46 +0000 (10:31 +0200)
commit84b94c4356c668ebe4532b3a999cf375f0089310
tree6d2dd5c5ed98c1921024454333dbcefd9f8613d8tree | snapshot
parent0ba34c87f7ce04232295ebf4991cd3ff36ea5abdcommit | diff
sparc/ptrace: Preserve previous registers for short regset write

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 <Dave.Martin@arm.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/sparc/kernel/ptrace_64.c diff | blob | history