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(parent: 84b94c4) | patch
metag/ptrace: Preserve previous registers for short regset write
authorDave Martin <Dave.Martin@arm.com>
Mon, 27 Mar 2017 14:10:55 +0000 (15:10 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 31 Mar 2017 08:31:46 +0000 (10:31 +0200)
commit2739b4874165acc5ce07e643c363e6768f44cf4f
treeff49cc649f535f88a8760134f31505f265acb03dtree | snapshot
parent84b94c4356c668ebe4532b3a999cf375f0089310commit | diff
metag/ptrace: Preserve previous registers for short regset write

commit a78ce80d2c9178351b34d78fec805140c29c193e 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: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/metag/kernel/ptrace.c diff | blob | history