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mips/ptrace: Preserve previous registers for short regset write
authorDave Martin <Dave.Martin@arm.com>
Mon, 27 Mar 2017 14:10:58 +0000 (15:10 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 31 Mar 2017 07:49:53 +0000 (09:49 +0200)
commitc8693666856c0db4a1e07235d98ce0b3bde98d9e
tree398c62469e3338efe0916af804c960edf0e80db4tree | snapshot
parente1dc8904b33b8c01f22d904fed4cb5f2060f5da3commit | diff
mips/ptrace: Preserve previous registers for short regset write

commit d614fd58a2834cfe4efa472c33c8f3ce2338b09b 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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/mips/kernel/ptrace.c diff | blob | history
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