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Date: Wed, 25 May 2022 11:10:52 +0200 From: Karsten Graul <kgraul@...ux.ibm.com> To: liuyacan@...p.netease.com, davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com Cc: linux-s390@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, ubraun@...ux.ibm.com Subject: Re: [PATCH net] net/smc: set ini->smcrv2.ib_dev_v2 to NULL if SMC-Rv2 is unavailable On 25/05/2022 10:54, liuyacan@...p.netease.com wrote: > From: liuyacan <liuyacan@...p.netease.com> > > In the process of checking whether RDMAv2 is available, the current > implementation first sets ini->smcrv2.ib_dev_v2, and then allocates > smc buf desc and register rmb, but the latter may fail. In this case, > the pointer should be reset. > > Fixes: e49300a6bf62 ("net/smc: add listen processing for SMC-Rv2") > Signed-off-by: liuyacan <liuyacan@...p.netease.com> > --- > net/smc/af_smc.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c > index 45a24d242..540b32d86 100644 > --- a/net/smc/af_smc.c > +++ b/net/smc/af_smc.c > @@ -2136,6 +2136,7 @@ static void smc_find_rdma_v2_device_serv(struct smc_sock *new_smc, > > not_found: > ini->smcr_version &= ~SMC_V2; > + ini->smcrv2.ib_dev_v2 = NULL; > ini->check_smcrv2 = false; > } > Thank you! Reviewed-by: Karsten Graul <kgraul@...ux.ibm.com>
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