BUG? race between kswapd and ptrace (access_process_vm )

Manfred Spraul (manfred@colorfullife.com)
Wed, 7 Mar 2001 17:32:43 +0100

Is kswapd now running without lock_kernel()?

Then there is a race between swapout and ptrace:
access_process_vm() accesses the page table entries, only protected with
the mmap_sem semaphore and lock_kernel().

Isn't

spin_lock(&mm->page_table_lock);

missing in access_one_page() [in linux/kernel/ptrace.c]?

--
    Manfred


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