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authorUrsula Braun <ubraun@linux.ibm.com>2020-09-17 22:46:02 +0200
committerDavid S. Miller <davem@davemloft.net>2020-09-17 18:03:56 -0700
commitac679364b98edb4ba46a482c7ab52e2ccb82b8de (patch)
tree7fd9fa611ca18c7bddb2ef56af8aae7c1a23c803 /net/smc
parent86d009f1cb046d826ac0222df8b5e25967af369c (diff)
net/smc: fix double kfree in smc_listen_work()
If smc_listen_rmda_finish() returns with an error, the storage addressed by 'buf' is freed a second time. Consolidate freeing under a common label and jump to that label. Fixes: 6bb14e48ee8d ("net/smc: dynamic allocation of CLC proposal buffer") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc')
-rw-r--r--net/smc/af_smc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index f5bececfedaa..ed8f97166be9 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -1371,7 +1371,6 @@ static void smc_listen_work(struct work_struct *work)
}
/* finish worker */
- kfree(buf);
if (!ism_supported) {
rc = smc_listen_rdma_finish(new_smc, &cclc,
ini.first_contact_local);
@@ -1381,12 +1380,13 @@ static void smc_listen_work(struct work_struct *work)
}
smc_conn_save_peer_info(new_smc, &cclc);
smc_listen_out_connected(new_smc);
- return;
+ goto out_free;
out_unlock:
mutex_unlock(&smc_server_lgr_pending);
out_decl:
smc_listen_decline(new_smc, rc, ini.first_contact_local);
+out_free:
kfree(buf);
}