Messages in this thread |  | | | From | Linus Torvalds <> | | Date | Thu, 21 Apr 2011 07:38:57 -0700 | | Subject | Re: 2.6.39-rc4 BUG: unable to handle kernel NULL pointer dereference at 0000000c IP: cfq_insert_request+0x1d/0x3f5 |
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On Thu, Apr 21, 2011 at 12:25 AM, Jens Axboe <axboe@kernel.dk> wrote: >> >> I am going to bisect, let's see if I can find anything. > > Thanks, that would be great!
I'd expect it to be very timing-dependent, and thus could easily be triggered (or hidden) by unrelated changes.
Just happening to have a request added to the elevator at _just_ the same moment that another CPU is changing it and getting rid of the data structures for the old one.
Linus
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