Re: [PATCH v1] blk-mq: free hctx->ctxs in queue's release handler

[Ming Lei]

Hi Jens,

Could you consider this patch for v4.1?

     http://marc.info/?l=linux-kernel&m=143342792910832&w=2

The issue is one obvious use-after-free and can be reproduced easily
via 'sudo modprobe loop;sleep 1;sudo rmmod loop' on linus tree:

      http://kernel.ubuntu.com/~ming/block/bug/4.1-rc7-blk-mq-oops.txt


Thanks,
Ming Lei
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