netdev - [PATCH net] dev: Defer free of skbs in flush

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Message-Id: <1595525508-1675-1-git-send-email-subashab@codeaurora.org>
Date:   Thu, 23 Jul 2020 11:31:48 -0600
From:   Subash Abhinov Kasiviswanathan <subashab@...eaurora.org>
To:     pabeni@...hat.com, davem@...emloft.net, stranche@...eaurora.org,
        netdev@...r.kernel.org
Cc:     Subash Abhinov Kasiviswanathan <subashab@...eaurora.org>
Subject: [PATCH net] dev: Defer free of skbs in flush_backlog

IRQs are disabled when freeing skbs in input queue.
Use the IRQ safe variant to free skbs here.

Fixes: 145dd5f9c88f ("net: flush the softnet backlog in process context")
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@...eaurora.org>
---
 net/core/dev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index 90b59fc..7a774eb 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5601,7 +5601,7 @@ static void flush_backlog(struct work_struct *work)
 	skb_queue_walk_safe(&sd->input_pkt_queue, skb, tmp) {
 		if (skb->dev->reg_state == NETREG_UNREGISTERING) {
 			__skb_unlink(skb, &sd->input_pkt_queue);
-			kfree_skb(skb);
+			dev_kfree_skb_irq(skb);
 			input_queue_head_incr(sd);
 		}
 	}
-- 
2.7.4