From: Jisheng Zhang Date: Fri, 18 Jun 2021 14:01:36 +0000 (+0800) Subject: riscv: kasan: Fix MODULES_VADDR evaluation due to local variables' name X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=314b781706e337b8cbde98cfefd3975863e032f2;p=linux.git riscv: kasan: Fix MODULES_VADDR evaluation due to local variables' name commit 2bfc6cd81bd1 ("riscv: Move kernel mapping outside of linear mapping") makes use of MODULES_VADDR to populate kernel, BPF, modules mapping. Currently, MODULES_VADDR is defined as below for RV64: | #define MODULES_VADDR (PFN_ALIGN((unsigned long)&_end) - SZ_2G) But kasan_init() has two local variables which are also named as _start, _end, so MODULES_VADDR is evaluated with the local variable _end rather than the global "_end" as we expected. Fix this issue by renaming the two local variables. Fixes: 2bfc6cd81bd1 ("riscv: Move kernel mapping outside of linear mapping") Signed-off-by: Jisheng Zhang Signed-off-by: Palmer Dabbelt --- diff --git a/arch/riscv/mm/kasan_init.c b/arch/riscv/mm/kasan_init.c index 9daacae93e335..a0d9e4ace3319 100644 --- a/arch/riscv/mm/kasan_init.c +++ b/arch/riscv/mm/kasan_init.c @@ -169,7 +169,7 @@ static void __init kasan_shallow_populate(void *start, void *end) void __init kasan_init(void) { - phys_addr_t _start, _end; + phys_addr_t p_start, p_end; u64 i; /* @@ -189,9 +189,9 @@ void __init kasan_init(void) (void *)kasan_mem_to_shadow((void *)VMALLOC_END)); /* Populate the linear mapping */ - for_each_mem_range(i, &_start, &_end) { - void *start = (void *)__va(_start); - void *end = (void *)__va(_end); + for_each_mem_range(i, &p_start, &p_end) { + void *start = (void *)__va(p_start); + void *end = (void *)__va(p_end); if (start >= end) break;