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From f85183096d31d865c97565614535d84943b12908 Mon Sep 17 00:00:00 2001
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Message-Id: <f85183096d31d865c97565614535d84943b12908.1489676829.git.panand@redhat.com>
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From: Baoquan He <bhe@redhat.com>
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Date: Fri, 3 Mar 2017 11:52:15 +0800
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Subject: [PATCH 01/10] Only print debug message when failed to serach for
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kernel symbol from /proc/kallsyms
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Kernel symbol page_offset_base could be unavailable when mm KASLR code is
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not compiled in kernel. It's inappropriate to print out error message
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when failed to search for page_offset_base from /proc/kallsyms. Seems now
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there is not a way to find out if mm KASLR is compiled in or not. An
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alternative approach is only printing out debug message in get_kernel_sym
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if failed to search a expected kernel symbol.
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Do it in this patch, a simple fix.
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Signed-off-by: Baoquan He <bhe@redhat.com>
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Reviewed-by: Pratyush Anand <panand@redhat.com>
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Acked-by: Dave Young <dyoung@redhat.com>
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Signed-off-by: Simon Horman <horms@verge.net.au>
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---
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kexec/arch/i386/crashdump-x86.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/kexec/arch/i386/crashdump-x86.c b/kexec/arch/i386/crashdump-x86.c
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index 88aeee33572b..c4cf2013a001 100644
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--- a/kexec/arch/i386/crashdump-x86.c
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+++ b/kexec/arch/i386/crashdump-x86.c
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@@ -127,7 +127,7 @@ static unsigned long long get_kernel_sym(const char *symbol)
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}
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}
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- fprintf(stderr, "Cannot get kernel %s symbol address\n", symbol);
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+ dbgprintf("Cannot get kernel %s symbol address\n", symbol);
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return 0;
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}
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--
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2.9.3
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