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increase AT_VECTOR_SIZE to terminate saved_auxv properly

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include/asm-powerpc/elf.h has 6 entries in ARCH_DLINFO.  fs/binfmt_elf.c
has 14 unconditional NEW_AUX_ENT entries and 2 conditional NEW_AUX_ENT
entries.  So in the worst case, saved_auxv does not get an AT_NULL entry at
the end.

The saved_auxv array must be terminated with an AT_NULL entry.  Make the
size of mm_struct->saved_auxv arch dependend, based on the number of
ARCH_DLINFO entries.

Signed-off-by: Olaf Hering <[email protected]>
Cc: Roland McGrath <[email protected]>
Cc: Jakub Jelinek <[email protected]>
Cc: Richard Henderson <[email protected]>
Cc: Ivan Kokshaysky <[email protected]>
Cc: "Luck, Tony" <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Paul Mundt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Olaf Hering 2007-10-16 23:30:12 -07:00 • committed by Linus Torvalds
commit 4f9a58d75b
14 changed files with 23 additions and 3 deletions
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1
include/asm-ia64/elf.h
View file

@ -192,6 +192,7 @@ extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);
#define GATE_EHDR ((const struct elfhdr *) GATE_ADDR)
/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
#define ARCH_DLINFO \
do { \
extern char __kernel_syscall_via_epc[]; \

2
include/asm-ia64/system.h
View file

@ -32,6 +32,8 @@
#include <linux/kernel.h>
#include <linux/types.h>
#define AT_VECTOR_SIZE_ARCH 2 /* entries in ARCH_DLINFO */
struct pci_vector_struct {
__u16 segment; /* PCI Segment number */
__u16 bus; /* PCI Bus number */