asid_cache must be unsigned long otherwise on 64bit system it will become 0 if the value in get_new_mmu_context() reaches 0xffffffff and in the end the assumption of ASID_FIRST_VERSION is not true anymore thus leads to more dangerous things.
Reported-by: libin <huawei.li...@huawei.com> Signed-off-by: Yong Zhang <yong.zh...@windriver.com> --- V2<-V1: Add the reporter. arch/mips/include/asm/cpu-info.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/mips/include/asm/cpu-info.h b/arch/mips/include/asm/cpu-info.h index f6299be..ebcc2ed 100644 --- a/arch/mips/include/asm/cpu-info.h +++ b/arch/mips/include/asm/cpu-info.h @@ -40,7 +40,7 @@ struct cache_desc { struct cpuinfo_mips { unsigned int udelay_val; - unsigned int asid_cache; + unsigned long asid_cache; /* * Capability and feature descriptor structure for MIPS CPU -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/