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ionic: catch failure from devlink_alloc

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[ Upstream commit 4a54903ff6 ]

Add a check for NULL on the alloc return.  If devlink_alloc() fails and
we try to use devlink_priv() on the NULL return, the kernel gets very
unhappy and panics. With this fix, the driver load will still fail,
but at least it won't panic the kernel.

Fixes: df69ba4321 ("ionic: Add basic framework for IONIC Network device driver")
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Shannon Nelson 2023-05-02 11:35:36 -07:00 committed by Greg Kroah-Hartman
parent 6456d80045
commit 5325f50de5
1 changed files with 2 additions and 0 deletions
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2
drivers/net/ethernet/pensando/ionic/ionic_devlink.c
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@ -61,6 +61,8 @@ struct ionic *ionic_devlink_alloc(struct device *dev)
struct devlink *dl;
dl = devlink_alloc(&ionic_dl_ops, sizeof(struct ionic), dev);
if (!dl)
return NULL;
return devlink_priv(dl);
}