diff options
| author | Thomas Garnier <thgarnie@google.com> | 2016-10-11 13:55:08 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-11 15:06:33 -0700 |
| commit | 0549a3c02efb350776bc869685a361045efd3a29 (patch) | |
| tree | 5ee321acb84f3e8c625927d2204853bbdc441c56 /arch | |
| parent | 2a1613a586de91457fa93c3e468a6e2438fe52a0 (diff) | |
kdump, vmcoreinfo: report memory sections virtual addresses
KASLR memory randomization can randomize the base of the physical memory
mapping (PAGE_OFFSET), vmalloc (VMALLOC_START) and vmemmap
(VMEMMAP_START). Adding these variables on VMCOREINFO so tools can easily
identify the base of each memory section.
Link: http://lkml.kernel.org/r/1471531632-23003-1-git-send-email-thgarnie@google.com
Signed-off-by: Thomas Garnier <thgarnie@google.com>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Xunlei Pang <xlpang@redhat.com>
Cc: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Eugene Surovegin <surovegin@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/machine_kexec_64.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c index 5a294e48b185..8c1f218926d7 100644 --- a/arch/x86/kernel/machine_kexec_64.c +++ b/arch/x86/kernel/machine_kexec_64.c @@ -337,6 +337,9 @@ void arch_crash_save_vmcoreinfo(void) #endif vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset()); + VMCOREINFO_PAGE_OFFSET(PAGE_OFFSET); + VMCOREINFO_VMALLOC_START(VMALLOC_START); + VMCOREINFO_VMEMMAP_START(VMEMMAP_START); } /* arch-dependent functionality related to kexec file-based syscall */ |