gregkh@ wrote: > > The patch below does not apply to the 5.4-stable tree. > If someone wants it applied there, or to any other stable or longterm > tree, then please email the backport, including the original git commit > id to <stable@xxxxxxxxxxxxxxx>. > > thanks, > > greg k-h Hi Greg, We should get it backported its a fairly rare event, but then we get bug reports when it happens. I'll prepare patches, let them run in our test env for a bit and then send them out. Thanks! John > > ------------------ original commit in Linus's tree ------------------ > > From 476d98018f32e68e7c5d4e8456940cf2b6d66f10 Mon Sep 17 00:00:00 2001 > From: John Fastabend <john.fastabend@xxxxxxxxx> > Date: Tue, 27 Jul 2021 09:04:59 -0700 > Subject: [PATCH] bpf, sockmap: On cleanup we additionally need to remove > cached skb > > Its possible if a socket is closed and the receive thread is under memory > pressure it may have cached a skb. We need to ensure these skbs are > free'd along with the normal ingress_skb queue. > [...]