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authorGuoqing Jiang <guoqing.jiang@linux.dev>2023-08-21 21:32:53 +0800
committerLeon Romanovsky <leon@kernel.org>2023-08-22 17:05:12 +0300
commitb056327bee09e6b86683d3f709a438ccd6031d72 (patch)
treef2f8fbf0a95943753827865c90d42d83314be1ad /drivers/infiniband
parentdfe261107c080709459c32695847eec96238852b (diff)
RDMA/siw: Balance the reference of cep->kref in the error path
The siw_connect can go to err in below after cep is allocated successfully: 1. If siw_cm_alloc_work returns failure. In this case socket is not assoicated with cep so siw_cep_put can't be called by siw_socket_disassoc. We need to call siw_cep_put twice since cep->kref is increased once after it was initialized. 2. If siw_cm_queue_work can't find a work, which means siw_cep_get is not called in siw_cm_queue_work, so cep->kref is increased twice by siw_cep_get and when associate socket with cep after it was initialized. So we need to call siw_cep_put three times (one in siw_socket_disassoc). 3. siw_send_mpareqrep returns error, this scenario is similar as 2. So we need to remove one siw_cep_put in the error path. Fixes: 6c52fdc244b5 ("rdma/siw: connection management") Signed-off-by: Guoqing Jiang <guoqing.jiang@linux.dev> Link: https://lore.kernel.org/r/20230821133255.31111-2-guoqing.jiang@linux.dev Acked-by: Bernard Metzler <bmt@zurich.ibm.com> Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/sw/siw/siw_cm.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/infiniband/sw/siw/siw_cm.c b/drivers/infiniband/sw/siw/siw_cm.c
index da530c0404da..a2605178f4ed 100644
--- a/drivers/infiniband/sw/siw/siw_cm.c
+++ b/drivers/infiniband/sw/siw/siw_cm.c
@@ -1501,7 +1501,6 @@ error:
cep->cm_id = NULL;
id->rem_ref(id);
- siw_cep_put(cep);
qp->cep = NULL;
siw_cep_put(cep);