From f85183096d31d865c97565614535d84943b12908 Mon Sep 17 00:00:00 2001 Message-Id: From: Baoquan He Date: Fri, 3 Mar 2017 11:52:15 +0800 Subject: [PATCH 01/10] Only print debug message when failed to serach for kernel symbol from /proc/kallsyms Kernel symbol page_offset_base could be unavailable when mm KASLR code is not compiled in kernel. It's inappropriate to print out error message when failed to search for page_offset_base from /proc/kallsyms. Seems now there is not a way to find out if mm KASLR is compiled in or not. An alternative approach is only printing out debug message in get_kernel_sym if failed to search a expected kernel symbol. Do it in this patch, a simple fix. Signed-off-by: Baoquan He Reviewed-by: Pratyush Anand Acked-by: Dave Young Signed-off-by: Simon Horman --- kexec/arch/i386/crashdump-x86.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kexec/arch/i386/crashdump-x86.c b/kexec/arch/i386/crashdump-x86.c index 88aeee33572b..c4cf2013a001 100644 --- a/kexec/arch/i386/crashdump-x86.c +++ b/kexec/arch/i386/crashdump-x86.c @@ -127,7 +127,7 @@ static unsigned long long get_kernel_sym(const char *symbol) } } - fprintf(stderr, "Cannot get kernel %s symbol address\n", symbol); + dbgprintf("Cannot get kernel %s symbol address\n", symbol); return 0; } -- 2.9.3