From: Dan Carpenter <dan.carpenter@oracle.com>
To: Jiri Pirko <jiri@resnulli.us>
Cc: "David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [PATCH net] rocker: fix a sleeping in atomic bug
Date: Thu, 6 Jan 2022 14:57:54 +0300 [thread overview]
Message-ID: <20220106115754.GB28590@kili> (raw)
This code is holding the &ofdpa->flow_tbl_lock spinlock so it is not
allowed to sleep. That means we have to pass the OFDPA_OP_FLAG_NOWAIT
flag to ofdpa_flow_tbl_del().
Fixes: 936bd486564a ("rocker: use FIB notifications instead of switchdev calls")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
From static analysis. Not tested.
drivers/net/ethernet/rocker/rocker_ofdpa.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/rocker/rocker_ofdpa.c b/drivers/net/ethernet/rocker/rocker_ofdpa.c
index 3e1ca7a8d029..bc70c6abd6a5 100644
--- a/drivers/net/ethernet/rocker/rocker_ofdpa.c
+++ b/drivers/net/ethernet/rocker/rocker_ofdpa.c
@@ -2783,7 +2783,8 @@ static void ofdpa_fib4_abort(struct rocker *rocker)
if (!ofdpa_port)
continue;
nh->fib_nh_flags &= ~RTNH_F_OFFLOAD;
- ofdpa_flow_tbl_del(ofdpa_port, OFDPA_OP_FLAG_REMOVE,
+ ofdpa_flow_tbl_del(ofdpa_port,
+ OFDPA_OP_FLAG_REMOVE | OFDPA_OP_FLAG_NOWAIT,
flow_entry);
}
spin_unlock_irqrestore(&ofdpa->flow_tbl_lock, flags);
--
2.20.1
next reply other threads:[~2022-01-06 11:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-06 11:57 Dan Carpenter [this message]
2022-01-06 13:50 ` [PATCH net] rocker: fix a sleeping in atomic bug patchwork-bot+netdevbpf
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