On 2/4/19 4:22 PM, Jeff Moyer wrote: > Hi, Jens, > > Jens Axboe <axboe@xxxxxxxxx> writes: > >> +static void io_ring_ctx_free(struct io_ring_ctx *ctx) >> +{ >> + destroy_workqueue(ctx->sqo_wq); > > You need to make sure sqo_wq is non-null before calling > destroy_workqueue. Fixed, thanks. -- Jens Axboe