Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 047/122] ibmvnic: check failover_pending in login response | Date | Mon, 20 Sep 2021 18:43:39 +0200 |
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From: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
commit 273c29e944bda9a20a30c26cfc34c9a3f363280b upstream.
If a failover occurs before a login response is received, the login response buffer maybe undefined. Check that there was no failover before accessing the login response buffer.
Fixes: 032c5e82847a ("Driver for IBM System i/p VNIC protocol") Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/ethernet/ibm/ibmvnic.c | 8 ++++++++ 1 file changed, 8 insertions(+)
--- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -4478,6 +4478,14 @@ static int handle_login_rsp(union ibmvni return 0; } + if (adapter->failover_pending) { + adapter->init_done_rc = -EAGAIN; + netdev_dbg(netdev, "Failover pending, ignoring login response\n"); + complete(&adapter->init_done); + /* login response buffer will be released on reset */ + return 0; + } + netdev->mtu = adapter->req_mtu - ETH_HLEN; netdev_dbg(adapter->netdev, "Login Response Buffer:\n");
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