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net/smc: set ini->smcrv2.ib_dev_v2 to NULL if SMC-Rv2 is unavailable

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[ Upstream commit b3b1a17538 ]

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: e49300a6bf ("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>
This commit is contained in:
liuyacan 2022-05-25 16:54:08 +08:00 committed by Greg Kroah-Hartman
parent 1808f7c9f2
commit 776fcaf860
1 changed files with 1 additions and 0 deletions
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1
net/smc/af_smc.c
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@ -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;
}