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From vgoyal@redhat.com Wed Nov 20 09:51:42 2013
From: Vivek Goyal <vgoyal@redhat.com>
Date: Wed, 20 Nov 2013 12:50:46 -0500
Subject: [PATCH 1/6] kexec: Export vmcoreinfo note size properly
To: linux-kernel@vger.kernel.org, kexec@lists.infradead.org
Cc: ebiederm@xmission.com, hpa@zytor.com, mjg59@srcf.ucam.org, greg@kroah.com, Vivek Goyal <vgoyal@redhat.com>
Message-ID: <1384969851-7251-2-git-send-email-vgoyal@redhat.com>
Right now we seem to be exporting the max data size contained inside
vmcoreinfo note. But this does not include the size of meta data around
vmcore info data. Like name of the note and starting and ending elf_note.
I think user space expects total size and that size is put in PT_NOTE
elf header.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
---
kernel/ksysfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/ksysfs.c
+++ b/kernel/ksysfs.c
@@ -126,7 +126,7 @@ static ssize_t vmcoreinfo_show(struct ko
{
return sprintf(buf, "%lx %x\n",
paddr_vmcoreinfo_note(),
- (unsigned int)vmcoreinfo_max_size);
+ (unsigned int)sizeof(vmcoreinfo_note));
}
KERNEL_ATTR_RO(vmcoreinfo);
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