From: Paul Barker Date: Fri, 18 Aug 2023 13:17:21 +0000 (+0100) Subject: arm: rmobile: Fix off-by-one error in cpuinfo X-Git-Tag: v2023.10~30^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=dbada49554edd16da39134815635fd0015725c9e;p=platform%2Fkernel%2Fu-boot.git arm: rmobile: Fix off-by-one error in cpuinfo In rmobile_cpuinfo_idx() there is an off-by-one error in accessing the rmobile_cpuinfo array. At the end of the loop, i is equal to the array size, i.e. rmobile_cpuinfo[i] accesses one entry past the end of the array. The last entry in the array is a fallback value so the loop should count to ARRAY_SIZE(rmobile_cpuinfo) - 1 instead, this will leave i equal to the index of the fallback value if no match is found. Signed-off-by: Paul Barker Reviewed-by: Biju Das Reviewed-by: Marek Vasut --- diff --git a/arch/arm/mach-rmobile/cpu_info.c b/arch/arm/mach-rmobile/cpu_info.c index 1d33e2a..7651e43 100644 --- a/arch/arm/mach-rmobile/cpu_info.c +++ b/arch/arm/mach-rmobile/cpu_info.c @@ -86,7 +86,7 @@ static int rmobile_cpuinfo_idx(void) int i = 0; u32 cpu_type = rmobile_get_cpu_type(); - for (; i < ARRAY_SIZE(rmobile_cpuinfo); i++) + for (; i < ARRAY_SIZE(rmobile_cpuinfo) - 1; i++) if (rmobile_cpuinfo[i].cpu_type == cpu_type) break;