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block: add NULL checks for bic in bfq_bfqq_save_state function #803

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block: add NULL checks for bic in bfq_bfqq_save_state function #803

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3 changes: 2 additions & 1 deletion block/bfq-iosched.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3036,7 +3036,7 @@ static void bfq_bfqq_save_state(struct bfq_queue *bfqq)
{
struct bfq_io_cq *bic = bfqq->bic;
unsigned int a_idx = bfqq->actuator_idx;
struct bfq_iocq_bfqq_data *bfqq_data = &bic->bfqq_data[a_idx];
struct bfq_iocq_bfqq_data *bfqq_data = NULL;

/*
* If !bfqq->bic, the queue is already shared or its requests
Expand All @@ -3046,6 +3046,7 @@ static void bfq_bfqq_save_state(struct bfq_queue *bfqq)
if (!bic)
return;

bfqq_data = &bic->bfqq_data[a_idx];
bfqq_data->saved_last_serv_time_ns = bfqq->last_serv_time_ns;
bfqq_data->saved_inject_limit = bfqq->inject_limit;
bfqq_data->saved_decrease_time_jif = bfqq->decrease_time_jif;
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