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nvme: avoid double free special payload
If a discard request needs to be retried, and that retry may fail before a new special payload is added, a double free will result. Clear the RQF_SPECIAL_LOAD when the request is cleaned. Signed-off-by: Chunguang Xu <chunguang.xu@shopee.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com> Signed-off-by: Keith Busch <kbusch@kernel.org>
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@ -998,6 +998,7 @@ void nvme_cleanup_cmd(struct request *req)
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clear_bit_unlock(0, &ctrl->discard_page_busy);
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clear_bit_unlock(0, &ctrl->discard_page_busy);
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else
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else
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kfree(bvec_virt(&req->special_vec));
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kfree(bvec_virt(&req->special_vec));
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req->rq_flags &= ~RQF_SPECIAL_PAYLOAD;
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}
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}
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}
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}
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EXPORT_SYMBOL_GPL(nvme_cleanup_cmd);
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EXPORT_SYMBOL_GPL(nvme_cleanup_cmd);
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