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From: Roland McGrath <roland@redhat.com>
To: Linus Torvalds <torvalds@osdl.org>, Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 6/11] powerpc vDSO: use VM_ALWAYSDUMP
Date: Sat, 13 Jan 2007 21:35:33 -0800 (PST)	[thread overview]
Message-ID: <20070114053533.141921800E5@magilla.sf.frob.com> (raw)
In-Reply-To: Roland McGrath's message of  Saturday, 13 January 2007 21:31:39 -0800 <20070114053140.351701800E5@magilla.sf.frob.com>


This patch fixes core dumps to include the vDSO vma, which is left out now.

Signed-off-by: Roland McGrath <roland@redhat.com>
---
 arch/powerpc/kernel/vdso.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index a4b28c7..ae0ede1 100644  
--- a/arch/powerpc/kernel/vdso.c
+++ b/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;

  parent reply	other threads:[~2007-01-14  5:35 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-14  5:31 [PATCH 1/11] Fix CONFIG_COMPAT_VDSO Roland McGrath
2007-01-14  5:33 ` [PATCH 2/11] Fix gate_vma.vm_flags Roland McGrath
2007-01-14  5:33 ` [PATCH 3/11] Add VM_ALWAYSDUMP Roland McGrath
2007-01-14  5:34 ` [PATCH 4/11] i386 vDSO: use VM_ALWAYSDUMP Roland McGrath
2007-01-23 19:48   ` Andrew Morton
2007-01-23 19:57     ` Linus Torvalds
2007-01-23 20:11       ` Roland McGrath
2007-01-23 19:57     ` Roland McGrath
2007-01-14  5:34 ` [PATCH 5/11] x86_64 ia32 " Roland McGrath
2007-01-14  5:35 ` Roland McGrath [this message]
2007-01-14  5:36 ` [PATCH 7/11] x86_64 ia32 vDSO: define arch_vma_name Roland McGrath
2007-01-14  5:36 ` [PATCH 8/11] Add install_special_mapping Roland McGrath
2007-01-14  5:36 ` [PATCH 9/11] i386 vDSO: use install_special_mapping Roland McGrath
2007-01-14  5:37 ` [PATCH 10/11] x86_64 ia32 " Roland McGrath
2007-01-14  5:37 ` [PATCH 11/11] powerpc " Roland McGrath
2007-01-17  8:49 ` [PATCH 1/11] Fix CONFIG_COMPAT_VDSO Ingo Molnar
2007-01-17  9:03   ` Roland McGrath
2007-01-24 10:25     ` Paul Mundt

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