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| author | Christoph Lameter <clameter@sgi.com> | 2008-03-03 11:18:08 -0800 |
|---|---|---|
| committer | Christoph Lameter <clameter@sgi.com> | 2008-03-03 11:18:08 -0800 |
| commit | 27710bf6febe8323f78bceca002ca7d71e5012a7 (patch) | |
| tree | 80a72f385ea28f9f7649363fe5147b3da37f9950 /fs/exec.c | |
| parent | 9ef64cb4320df821638b508f79aa8b858cca99f0 (diff) | |
| parent | cad226b8a71f969ad05137e43b48c9e6059a0b9f (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'fs/exec.c')
| -rw-r--r-- | fs/exec.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/exec.c b/fs/exec.c index a44b142fb46..54a0a557b67 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -173,8 +173,15 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, return NULL; if (write) { - struct rlimit *rlim = current->signal->rlim; unsigned long size = bprm->vma->vm_end - bprm->vma->vm_start; + struct rlimit *rlim; + + /* + * We've historically supported up to 32 pages (ARG_MAX) + * of argument strings even with small stacks + */ + if (size <= ARG_MAX) + return page; /* * Limit to 1/4-th the stack size for the argv+env strings. @@ -183,6 +190,7 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos, * - the program will have a reasonable amount of stack left * to work from. */ + rlim = current->signal->rlim; if (size > rlim[RLIMIT_STACK].rlim_cur / 4) { put_page(page); return NULL; |