The patch titled
powerpc vDSO: use VM_ALWAYSDUMP
has been added to the -mm tree. Its filename is
powerpc-vdso-use-vm_alwaysdump.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: powerpc vDSO: use VM_ALWAYSDUMP
From: Roland McGrath <roland@xxxxxxxxxx>
This patch fixes core dumps to include the vDSO vma, which is left out now.
Signed-off-by: Roland McGrath <roland@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/powerpc/kernel/vdso.c | 7 +++++++
1 files changed, 7 insertions(+)
diff -puN arch/powerpc/kernel/vdso.c~powerpc-vdso-use-vm_alwaysdump arch/powerpc/kernel/vdso.c
--- a/arch/powerpc/kernel/vdso.c~powerpc-vdso-use-vm_alwaysdump
+++ a/arch/powerpc/kernel/vdso.c
@@ -284,6 +284,13 @@ int arch_setup_additional_pages(struct l
* pages though
*/
vma->vm_flags = VM_READ|VM_EXEC|VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC;
+ /*
+ * Make sure the vDSO gets into every core dump.
+ * Dumping its contents makes post-mortem fully interpretable later
+ * without matching up the same kernel and hardware config to see
+ * what PC values meant.
+ */
+ vma->vm_flags |= VM_ALWAYSDUMP;
vma->vm_flags |= mm->def_flags;
vma->vm_page_prot = protection_map[vma->vm_flags & 0x7];
vma->vm_ops = &vdso_vmops;
_
Patches currently in -mm which might be from roland@xxxxxxxxxx are
fix-config_compat_vdso.patch
fix-gate_vmavm_flags.patch
add-vm_alwaysdump.patch
i386-vdso-use-vm_alwaysdump.patch
i386-vdso-use-vm_alwaysdump-tidy.patch
x86_64-ia32-vdso-use-vm_alwaysdump.patch
powerpc-vdso-use-vm_alwaysdump.patch
x86_64-ia32-vdso-define-arch_vma_name.patch
add-install_special_mapping.patch
i386-vdso-use-install_special_mapping.patch
x86_64-ia32-vdso-use-install_special_mapping.patch
powerpc-vdso-use-install_special_mapping.patch
transform-kmem_cache_allocmemset0-kmem_cache_zalloc.patch
clone-flag-clone_parent_tidptr-leaves-invalid-results-in-memory.patch
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