commit 263e45ccf27b21e9862cc538ed28978533d04e4b
Author: Baoquan He <bhe@redhat.com>
Date:   Fri Mar 3 11:52:15 2017 +0800

    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 <bhe@redhat.com>
    Reviewed-by: Pratyush Anand <panand@redhat.com>
    Acked-by: Dave Young <dyoung@redhat.com>
    Signed-off-by: Simon Horman <horms@verge.net.au>

diff --git a/kexec/arch/i386/crashdump-x86.c b/kexec/arch/i386/crashdump-x86.c
index 88aeee3..c4cf201 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;
 }