linux-kernel - [PATCH] staging: lustre: Fix avoid intensive reconnecting for ko2iblnd patch

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Message-ID: <9FC73D3DBECE0941BD2ED069D26863425CE75F26@irsmsx110.ger.corp.intel.com>
Date:   Tue, 16 Jan 2018 15:01:49 +0000
From:   "Eremin, Dmitry" <dmitry.eremin@...el.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "Drokin, Oleg" <oleg.drokin@...el.com>,
        "Dilger, Andreas" <andreas.dilger@...el.com>,
        James Simmons <jsimmons@...radead.org>,
        Dan Carpenter <dan.carpenter@...cle.com>
CC:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "Lustre Development List" <lustre-devel@...ts.lustre.org>
Subject: [PATCH] staging: lustre: Fix avoid intensive reconnecting for
 ko2iblnd patch

In the original commit 4d99b2581effe115376402e710fbcb1c3c073769
was missed one hunk. Added it now to avoid issue with use after free.

Signed-off-by: Dmitry Eremin <Dmitry.Eremin@...el.com>
---
 drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
index 2ebc484..a15a625 100644
--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
@@ -890,7 +890,8 @@ void kiblnd_destroy_conn(struct kib_conn *conn, bool free_conn)
 		atomic_dec(&net->ibn_nconns);
 	}
 
-	kfree(conn);
+	if (free_conn)
+		kfree(conn);
 }
 
 int kiblnd_close_peer_conns_locked(struct kib_peer *peer, int why)
-- 
1.8.3.1


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