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| author | Guoqing Jiang <guoqing.jiang@linux.dev> | 2023-08-21 16:32:53 +0300 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2023-08-22 17:05:12 +0300 |
| commit | b056327bee09e6b86683d3f709a438ccd6031d72 (patch) | |
| tree | f2f8fbf0a95943753827865c90d42d83314be1ad /drivers/infiniband | |
| parent | dfe261107c080709459c32695847eec96238852b (diff) | |
| download | linux-b056327bee09e6b86683d3f709a438ccd6031d72.tar.xz | |
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.c | 1 |
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); |