Re: UBSAN: Undefined behaviour in arch/powerpc/kernel/cputable.c

From	Meelis Roos <mroos@linux.ee>
Newsgroups	linux.kernel
Subject	Re: UBSAN: Undefined behaviour in arch/powerpc/kernel/cputable.c
Date	2016-09-11 09:50 +0200
Message-ID	<sg7Gx-3ey-7@gated-at.bofh.it> (permalink)
References	<sfsk2-2dK-17@gated-at.bofh.it> <sfNeO-70F-25@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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> Does this fix it?

Yes, thank you!

> diff --git a/arch/powerpc/include/asm/cpu_has_feature.h b/arch/powerpc/include/asm/cpu_has_feature.h
> index 2ef55f8968a2..b312b152461b 100644
> --- a/arch/powerpc/include/asm/cpu_has_feature.h
> +++ b/arch/powerpc/include/asm/cpu_has_feature.h
> @@ -15,7 +15,7 @@ static inline bool early_cpu_has_feature(unsigned long feature)
>  #ifdef CONFIG_JUMP_LABEL_FEATURE_CHECKS
>  #include <linux/jump_label.h>
>  
> -#define NUM_CPU_FTR_KEYS	64
> +#define NUM_CPU_FTR_KEYS	BITS_PER_LONG
>  
>  extern struct static_key_true cpu_feature_keys[NUM_CPU_FTR_KEYS];
>  
> 

-- 
Meelis Roos (mroos@linux.ee)

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Re: UBSAN: Undefined behaviour in arch/powerpc/kernel/cputable.c Michael Ellerman <mpe@ellerman.id.au> - 2016-09-10 12:00 +0200
  Re: UBSAN: Undefined behaviour in arch/powerpc/kernel/cputable.c Meelis Roos <mroos@linux.ee> - 2016-09-11 09:50 +0200

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