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authorEugene Surovegin <surovegin@google.com>2014-01-23 09:31:20 -0800
committerH. Peter Anvin <hpa@linux.intel.com>2014-02-25 16:57:47 -0800
commitb6085a865762236bb84934161273cdac6dd11c2d (patch)
treeeb89b4e11b14dd3270cfc42faeefe4fb4719de90 /arch/x86
parentcfbf8d4857c26a8a307fb7cd258074c9dcd8c691 (diff)
x86, kaslr: export offset in VMCOREINFO ELF notes
Include kASLR offset in VMCOREINFO ELF notes to assist in debugging. [ hpa: pushing this for v3.14 to avoid having a kernel version with kASLR where we can't debug output. ] Signed-off-by: Eugene Surovegin <surovegin@google.com> Link: http://lkml.kernel.org/r/20140123173120.GA25474@www.outflux.net Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/machine_kexec_64.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c
index 4eabc160696f..679cef0791cd 100644
--- a/arch/x86/kernel/machine_kexec_64.c
+++ b/arch/x86/kernel/machine_kexec_64.c
@@ -279,5 +279,7 @@ void arch_crash_save_vmcoreinfo(void)
VMCOREINFO_SYMBOL(node_data);
VMCOREINFO_LENGTH(node_data, MAX_NUMNODES);
#endif
+ vmcoreinfo_append_str("KERNELOFFSET=%lx\n",
+ (unsigned long)&_text - __START_KERNEL);
}