Hi Ted, To be fixed for 2.4: 1) Non-atomic pte updates The page aging code and mprotect both modify existing ptes non-atomically. That can stomp on the VM hardware on other CPUs setting the dirty bit on mmaped pages when using threads. 2.2 is vulnerable too. 2) RSS locking swapout holds the page_table_lock while swapping, and adjusts the mm->rss while holding that lock. Other places in the mm are not so careful about holding the lock, so rss (which is not an atomic_t) can be corrupted. --Stephen - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
