I added an fallback path for now because I'm not sure if the stack VMA
is always predowngrowed here, if the printk better it may be also needed
to add an stack extension here.
-Andi
--- linux-2.5.69-amd64/fs/exec.c-o 2003-04-20 21:21:50.000000000 +0200
+++ linux-2.5.69-amd64/fs/exec.c 2003-05-11 08:38:35.000000000 +0200
@@ -292,7 +292,9 @@
pgd_t * pgd;
pmd_t * pmd;
pte_t * pte;
+ pgprot_t prot;
struct pte_chain *pte_chain;
+ struct vm_area_struct *vma;
if (page_count(page) != 1)
printk(KERN_ERR "mem_map disagrees with %p at %08lx\n", page, address);
@@ -314,7 +316,13 @@
}
lru_cache_add_active(page);
flush_dcache_page(page);
- set_pte(pte, pte_mkdirty(pte_mkwrite(mk_pte(page, PAGE_COPY))));
+ vma = find_vma(tsk->mm, address);
+ if (!vma) {
+ printk("put_dirty_page: stack vma not extended yet %lx?\n",address);
+ prot = PAGE_COPY;
+ } else
+ prot = vma->vm_page_prot;
+ set_pte(pte, pte_mkdirty(pte_mkwrite(mk_pte(page, prot))));
pte_chain = page_add_rmap(page, pte, pte_chain);
pte_unmap(pte);
tsk->mm->rss++;
-
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