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Date: Mon, 26 Dec 2022 12:11:26 -0700 From: Jens Axboe <axboe@...nel.dk> To: paolo.valente@...aro.org, jack@...e.cz, Yu Kuai <yukuai1@...weicloud.com> Cc: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org, yukuai3@...wei.com, yi.zhang@...wei.com Subject: Re: [PATCH] block, bfq: fix uaf for bfqq in bfq_exit_icq_bfqq On Mon, 26 Dec 2022 11:06:05 +0800, Yu Kuai wrote: > Commit 64dc8c732f5c ("block, bfq: fix possible uaf for 'bfqq->bic'") > will access 'bic->bfqq' in bic_set_bfqq(), however, bfq_exit_icq_bfqq() > can free bfqq first, and then call bic_set_bfqq(), which will cause uaf. > > Fix the problem by moving bfq_exit_bfqq() behind bic_set_bfqq(). > > > [...] Applied, thanks! [1/1] block, bfq: fix uaf for bfqq in bfq_exit_icq_bfqq commit: 246cf66e300b76099b5dbd3fdd39e9a5dbc53f02 Best regards, -- Jens Axboe
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