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On Tue, Nov 29, 2005 at 04:06:28PM +1100, David Gibson wrote: > Bill, does this look like the correct fix for the problem to you? If > so, please apply Andrew.> set_page_dirty() will not cope with being handed a page * which is > part of a compound page, but not the master page in that compound > page. This case can occur via access_process_vm() if you attempt to > write to another process's hugepage memory area using ptrace() > (causing an oops or hang).> This patch fixes the bug by first resolving the page * to the compound > page's master page.> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> akpm had already responded, but my general response would have been "Why on earth would you mark a hugepage dirty?" or similar. -- wli - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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