Messages in this thread |  | | From | Michal Simek <> | Date | Tue, 4 Feb 2020 11:34:10 +0100 | Subject | Re: [PATCH] microblaze: Prevent the overflow of the start |
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út 14. 1. 2020 v 13:34 odesílatel Michal Simek <michal.simek@xilinx.com> napsal: > > From: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com> > > In case the start + cache size is more than the max int the > start overflows. > Prevent the same. > > Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com> > Signed-off-by: Michal Simek <michal.simek@xilinx.com> > --- > > arch/microblaze/kernel/cpu/cache.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/arch/microblaze/kernel/cpu/cache.c b/arch/microblaze/kernel/cpu/cache.c > index 0bde47e4fa69..dcba53803fa5 100644 > --- a/arch/microblaze/kernel/cpu/cache.c > +++ b/arch/microblaze/kernel/cpu/cache.c > @@ -92,7 +92,8 @@ static inline void __disable_dcache_nomsr(void) > #define CACHE_LOOP_LIMITS(start, end, cache_line_length, cache_size) \ > do { \ > int align = ~(cache_line_length - 1); \ > - end = min(start + cache_size, end); \ > + if (start < UINT_MAX - cache_size) \ > + end = min(start + cache_size, end); \ > start &= align; \ > } while (0) > > -- > 2.24.0 >
Applied. M
-- Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91 w: www.monstr.eu p: +42-0-721842854 Maintainer of Linux kernel - Xilinx Microblaze Maintainer of Linux kernel - Xilinx Zynq ARM and ZynqMP ARM64 SoCs U-Boot custodian - Xilinx Microblaze/Zynq/ZynqMP/Versal SoCs
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