Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.17 079/298] net/smc: set ini->smcrv2.ib_dev_v2 to NULL if SMC-Rv2 is unavailable | Date | Mon, 13 Jun 2022 12:09:33 +0200 |
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From: liuyacan <liuyacan@corp.netease.com>
[ Upstream commit b3b1a17538d3ef6a9667b2271216fd16d7678ab5 ]
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@corp.netease.com> Reviewed-by: Karsten Graul <kgraul@linux.ibm.com> Link: https://lore.kernel.org/r/20220525085408.812273-1-liuyacan@corp.netease.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- 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 b9fe31834354..4bc6b16669f3 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -1973,6 +1973,7 @@ 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; } -- 2.35.1
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