Re: [PATCH] null_blk: fix use-after-free error

[Jens Axboe]

On 12/15/2015 02:56 AM, Mike Krinkin wrote:
> blk_end_request_all may free request, so we need to save
> request_queue pointer before blk_end_request_all call.
>
> The problem was introduced in commit cf8ecc5a8455266f8d51
> ("null_blk: guarantee device restart in all irq modes")
> and causes general protection fault with slab poisoning
> enabled.
>
> Fixes: cf8ecc5a8455266f8d51 ("null_blk: guarantee device
>         restart in all irq modes")

Added for 4.4, thanks.

--
Jens Axboe

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