diff options
Diffstat (limited to 'sys-kernel/alpha-sources/files/alpha-sources.binfmt_a.out.patch')
| -rw-r--r-- | sys-kernel/alpha-sources/files/alpha-sources.binfmt_a.out.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/sys-kernel/alpha-sources/files/alpha-sources.binfmt_a.out.patch b/sys-kernel/alpha-sources/files/alpha-sources.binfmt_a.out.patch new file mode 100644 index 000000000000..4644ae28bce4 --- /dev/null +++ b/sys-kernel/alpha-sources/files/alpha-sources.binfmt_a.out.patch @@ -0,0 +1,63 @@ +diff -Nru linux-2.4.28/fs/exec.c linux-2.4.28.plasmaroo/fs/exec.c +--- linux-2.4.28/fs/exec.c 2004-04-15 10:44:45 -07:00 ++++ linux-2.4.28.plasmaroo/fs/exec.c 2004-11-12 12:02:40 -08:00 +@@ -342,6 +342,7 @@ int setup_arg_pages(struct linux_binprm + + down_write(¤t->mm->mmap_sem); + { ++ struct vm_area_struct *vma; + mpnt->vm_mm = current->mm; + mpnt->vm_start = PAGE_MASK & (unsigned long) bprm->p; + mpnt->vm_end = STACK_TOP; +@@ -351,6 +352,12 @@ int setup_arg_pages(struct linux_binprm + mpnt->vm_pgoff = 0; + mpnt->vm_file = NULL; + mpnt->vm_private_data = (void *) 0; ++ vma = find_vma(current->mm, mpnt->vm_start); ++ if (vma) { ++ up_write(¤t->mm->mmap_sem); ++ kmem_cache_free(vm_area_cachep, mpnt); ++ return -ENOMEM; ++ } + insert_vm_struct(current->mm, mpnt); + current->mm->total_vm = (mpnt->vm_end - mpnt->vm_start) >> PAGE_SHIFT; + } +diff -Nru linux-2.4.28/fs/exec.c linux-2.4.28.plasmaroo/fs/exec.c +--- linux-2.4.28/fs/binfmt_aout.c 2002-02-04 23:54:04 -08:00 ++++ linux-2.4.28.plasmaroo/fs/binfmt_aout.c 2004-11-12 11:55:14 -08:00 +@@ -39,13 +39,18 @@ static struct linux_binfmt aout_format = + NULL, THIS_MODULE, load_aout_binary, load_aout_library, aout_core_dump, PAGE_SIZE + }; + +-static void set_brk(unsigned long start, unsigned long end) ++#define BAD_ADDR(x) ((unsigned long)(x) >= TASK_SIZE) ++ ++static int set_brk(unsigned long start, unsigned long end) + { + start = PAGE_ALIGN(start); + end = PAGE_ALIGN(end); +- if (end <= start) +- return; +- do_brk(start, end - start); ++ if (end > start) { ++ unsigned long addr = do_brk(start, end - start); ++ if (BAD_ADDR(addr)) ++ return addr; ++ } ++ return 0; + } + + /* +@@ -405,7 +410,11 @@ static int load_aout_binary(struct linux + beyond_if: + set_binfmt(&aout_format); + +- set_brk(current->mm->start_brk, current->mm->brk); ++ retval = set_brk(current->mm->start_brk, current->mm->brk); ++ if (retval < 0) { ++ send_sig(SIGKILL, current, 0); ++ return retval; ++ } + + retval = setup_arg_pages(bprm); + if (retval < 0) { |