Like all other architectures such as x86 or arm64, include KASLR offset in VMCOREINFO ELF notes to assist in debugging. After this, we can use crash --kaslr option to parse vmcore generated from a kaslr kernel.
Note: The crash tool needs to support --kaslr too. Signed-off-by: Jason Yan <[email protected]> Cc: Diana Craciun <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Christophe Leroy <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Nicholas Piggin <[email protected]> Cc: Kees Cook <[email protected]> --- arch/powerpc/kernel/machine_kexec.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c index c4ed328a7b96..078fe3d76feb 100644 --- a/arch/powerpc/kernel/machine_kexec.c +++ b/arch/powerpc/kernel/machine_kexec.c @@ -86,6 +86,7 @@ void arch_crash_save_vmcoreinfo(void) VMCOREINFO_STRUCT_SIZE(mmu_psize_def); VMCOREINFO_OFFSET(mmu_psize_def, shift); #endif + vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset()); } /* -- 2.17.2
