On Sun, 13 May 2001, Mikulas Patocka wrote:
> CPU 0 CPU 1
> is executing the code marked is executing try_to_free_buffers on
> above with ^^^^^^^: the same page (it can be, because CPU 0
> did not lock the page)
>
> (page->buffers &&
>
> page->buffers = NULL
>
> MAJOR(page->buffers->b_dev) ==
> RAMDISK_MAJOR)) ===> Oops, NULL pointer dereference!
>
>
>
> Maybe compiler CSE optimization will eliminate the double load of
> page->buffers, but we must not rely on it. If the compiler doesn't
> optimize it, it can produce random oopses.
You're right, this should be fixed. Do you happen to have a
patch ? ;)
regards,
Rik
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This archive was generated by hypermail 2b29 : Tue May 15 2001 - 21:00:33 EST