Re: [BUG] Invalid return address of mmap() followed by mbind() in multithreaded context
Andi Kleen <[email protected]> Sat, 18 Jun 2011 20:12:32 +0200
| Newsgroups | org.kernel.vger.linux-numa,org.kernel.vger.linux-kernel,org.kvack.linux-mm |
|---|---|
| Message-ID | <[email protected]> |
> for (i = 0; i < NR_ITER; i++) {
> addr = mmap(0, PAGE_SIZE, PROT_READ | PROT_WRITE,
> MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
> if (addr == (void *) -1) {
> assert(0 && "mmap failed");
> }
> *addr = 0;
>
> err = mbind(addr, PAGE_SIZE, MPOL_BIND, &node, sizeof(node), 0);
mbind() can be only done before the first touch. you're not actually testing
numa policy.
-andi
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