From: Kees Cook <keescook@chromium.org>
To: crash-utility@redhat.com
Cc: linux-kernel@vger.kernel.org, Dave Anderson <anderson@redhat.com>,
Andrew Honig <ahonig@google.com>,
Eugene Surovegin <surovegin@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, Yinghai Lu <yinghai@kernel.org>
Subject: [PATCH] x86, kaslr: export offset in VMCOREINFO ELF notes
Date: Wed, 22 Jan 2014 15:56:15 -0800 [thread overview]
Message-ID: <20140122235615.GA21632@www.outflux.net> (raw)
Include kASLR offset in VMCOREINFO ELF notes to assist in debugging.
Signed-off-by: Eugene Surovegin <surovegin@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
---
arch/x86/kernel/machine_kexec_64.c | 2 ++
1 file changed, 2 insertions(+)
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);
}
--
1.7.9.5
--
Kees Cook
Chrome OS Security
next reply other threads:[~2014-01-22 23:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-22 23:56 Kees Cook [this message]
2014-01-23 9:19 ` Ingo Molnar
2014-01-23 17:29 ` Kees Cook
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