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authorXie Yongji <xieyongji@bytedance.com>2021-08-13 23:13:30 +0800
committerJens Axboe <axboe@kernel.dk>2021-08-13 09:46:48 -0600
commitcddce01160582a5f52ada3da9626c052d852ec42 (patch)
treee7615b6f592123a288f26ad9e64dd7381bafaf30 /block
parent454bb6775202d94f0f489c4632efecdb62d3c904 (diff)
nbd: Aovid double completion of a request
There is a race between iterating over requests in nbd_clear_que() and completing requests in recv_work(), which can lead to double completion of a request. To fix it, flush the recv worker before iterating over the requests and don't abort the completed request while iterating. Fixes: 96d97e17828f ("nbd: clear_sock on netlink disconnect") Reported-by: Jiang Yadong <jiangyadong@bytedance.com> Signed-off-by: Xie Yongji <xieyongji@bytedance.com> Reviewed-by: Josef Bacik <josef@toxicpanda.com> Link: https://lore.kernel.org/r/20210813151330.96-1-xieyongji@bytedance.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
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