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Message-Id: <20210524144620.2497249-11-sashal@kernel.org>
Date: Mon, 24 May 2021 10:45:28 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Anirudh Rayabharam <mail@...rudhrb.com>,
Ursula Braun <ubraun@...ux.ibm.com>,
"David S . Miller" <davem@...emloft.net>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Sasha Levin <sashal@...nel.org>, linux-s390@...r.kernel.org,
netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 5.12 11/63] net/smc: properly handle workqueue allocation failure
From: Anirudh Rayabharam <mail@...rudhrb.com>
[ Upstream commit bbeb18f27a44ce6adb00d2316968bc59dc640b9b ]
In smcd_alloc_dev(), if alloc_ordered_workqueue() fails, properly catch
it, clean up and return NULL to let the caller know there was a failure.
Move the call to alloc_ordered_workqueue higher in the function in order
to abort earlier without needing to unwind the call to device_initialize().
Cc: Ursula Braun <ubraun@...ux.ibm.com>
Cc: David S. Miller <davem@...emloft.net>
Signed-off-by: Anirudh Rayabharam <mail@...rudhrb.com>
Link: https://lore.kernel.org/r/20210503115736.2104747-18-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
net/smc/smc_ism.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c
index 6558cf7643a7..94b31f2551bc 100644
--- a/net/smc/smc_ism.c
+++ b/net/smc/smc_ism.c
@@ -402,6 +402,14 @@ struct smcd_dev *smcd_alloc_dev(struct device *parent, const char *name,
return NULL;
}
+ smcd->event_wq = alloc_ordered_workqueue("ism_evt_wq-%s)",
+ WQ_MEM_RECLAIM, name);
+ if (!smcd->event_wq) {
+ kfree(smcd->conn);
+ kfree(smcd);
+ return NULL;
+ }
+
smcd->dev.parent = parent;
smcd->dev.release = smcd_release;
device_initialize(&smcd->dev);
@@ -415,8 +423,6 @@ struct smcd_dev *smcd_alloc_dev(struct device *parent, const char *name,
INIT_LIST_HEAD(&smcd->vlan);
INIT_LIST_HEAD(&smcd->lgr_list);
init_waitqueue_head(&smcd->lgrs_deleted);
- smcd->event_wq = alloc_ordered_workqueue("ism_evt_wq-%s)",
- WQ_MEM_RECLAIM, name);
return smcd;
}
EXPORT_SYMBOL_GPL(smcd_alloc_dev);
--
2.30.2
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