The patch titled
Kcore elf note namesz field fix
has been added to the -mm tree. Its filename is
kcore-elf-note-namesz-field-fix.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Kcore elf note namesz field fix
From: Vivek Goyal <vgoyal@xxxxxxxxxx>
o As per ELF specifications, it looks like that elf note "namesz" field
contains the length of "name" including the size of null character. And
currently we are filling "namesz" without taking into the consideration
the null character size.
o Kexec-tools performs this check deligently hence I ran into the issue
while trying to open /proc/kcore in kexec-tools for some info.
Signed-off-by: Vivek Goyal <vgoyal@xxxxxxxxxx>
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
fs/proc/kcore.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff -puN fs/proc/kcore.c~kcore-elf-note-namesz-field-fix fs/proc/kcore.c
--- a/fs/proc/kcore.c~kcore-elf-note-namesz-field-fix
+++ a/fs/proc/kcore.c
@@ -100,7 +100,7 @@ static int notesize(struct memelfnote *e
int sz;
sz = sizeof(struct elf_note);
- sz += roundup(strlen(en->name), 4);
+ sz += roundup((strlen(en->name) + 1), 4);
sz += roundup(en->datasz, 4);
return sz;
@@ -116,7 +116,7 @@ static char *storenote(struct memelfnote
#define DUMP_WRITE(addr,nr) do { memcpy(bufp,addr,nr); bufp += nr; } while(0)
- en.n_namesz = strlen(men->name);
+ en.n_namesz = strlen(men->name) + 1;
en.n_descsz = men->datasz;
en.n_type = men->type;
_
Patches currently in -mm which might be from vgoyal@xxxxxxxxxx are
kdump-introduce-reset_devices-command-line-option.patch
kcore-elf-note-namesz-field-fix.patch
stack-overflow-safe-kdump-safe_smp_processor_id.patch
stack-overflow-safe-kdump-safe_smp_processor_id_voyager.patch
stack-overflow-safe-kdump-crash_use_safe_smp_processor_id.patch
stack-overflow-safe-kdump-crash_use_safe_smp_processor_id-fix.patch
stack-overflow-safe-kdump-safe_smp_send_nmi_allbutself.patch
-
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