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 <[email protected]>
---
fs/proc/kcore.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN fs/proc/kcore.c~kcore-elf-note-namesz-fix fs/proc/kcore.c
--- linux-2.6.18-rc3-1M/fs/proc/kcore.c~kcore-elf-note-namesz-fix 2006-08-31 16:10:41.000000000 -0400
+++ linux-2.6.18-rc3-1M-root/fs/proc/kcore.c 2006-08-31 16:10:41.000000000 -0400
@@ -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;
_
-
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