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Commit 636a3178 authored by Peter Oruba's avatar Peter Oruba Committed by Ingo Molnar
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x86: Fixed NULL function pointer dereference in AMD microcode patch loader. 



Dereference took place in code part responsible for manual installation
of microcode patches through /dev/cpu/microcode.

Signed-off-by: default avatarPeter Oruba <peter.oruba@amd.com>
Cc: Peter Oruba <peter.oruba@amd.com>
Cc: Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent d33dcb9e

arch/x86/kernel/microcode.c

+2 −1
Original line number Original line Diff line number Diff line
@@ -127,6 +127,7 @@ static int do_microcode_update(void) 
	old = current->cpus_allowed;

	old = current->cpus_allowed;





	while ((cursor = microcode_ops->get_next_ucode(&new_mc, cursor)) > 0) {

	while ((cursor = microcode_ops->get_next_ucode(&new_mc, cursor)) > 0) {

		if (microcode_ops->microcode_sanity_check != NULL)

			error = microcode_ops->microcode_sanity_check(new_mc);

			error = microcode_ops->microcode_sanity_check(new_mc);

		if (error)

		if (error)

			goto out;

			goto out;