lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Thu, 8 Apr 2021 13:11:17 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     David Miller <davem@...emloft.net>,
        Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Networking <netdev@...r.kernel.org>
Cc:     Cong Wang <cong.wang@...edance.com>,
        John Fastabend <john.fastabend@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: manual merge of the net-next tree with the bpf tree

Hi all,

Today's linux-next merge of the net-next tree got a conflict in:

  net/core/skmsg.c

between commit:

  144748eb0c44 ("bpf, sockmap: Fix incorrect fwd_alloc accounting")

from the bpf tree and commit:

  e3526bb92a20 ("skmsg: Move sk_redir from TCP_SKB_CB to skb")

from the net-next tree.

I fixed it up (I think - see below) and can carry the fix as
necessary. This is now fixed as far as linux-next is concerned, but any
non trivial conflicts should be mentioned to your upstream maintainer
when your tree is submitted for merging.  You may also want to consider
cooperating with the maintainer of the conflicting tree to minimise any
particularly complex conflicts.

-- 
Cheers,
Stephen Rothwell

diff --cc net/core/skmsg.c
index 5def3a2e85be,92a83c02562a..000000000000
--- a/net/core/skmsg.c
+++ b/net/core/skmsg.c
@@@ -806,12 -900,17 +900,13 @@@ int sk_psock_tls_strp_read(struct sk_ps
  	int ret = __SK_PASS;
  
  	rcu_read_lock();
- 	prog = READ_ONCE(psock->progs.skb_verdict);
+ 	prog = READ_ONCE(psock->progs.stream_verdict);
  	if (likely(prog)) {
 -		/* We skip full set_owner_r here because if we do a SK_PASS
 -		 * or SK_DROP we can skip skb memory accounting and use the
 -		 * TLS context.
 -		 */
  		skb->sk = psock->sk;
- 		tcp_skb_bpf_redirect_clear(skb);
- 		ret = sk_psock_bpf_run(psock, prog, skb);
- 		ret = sk_psock_map_verd(ret, tcp_skb_bpf_redirect_fetch(skb));
+ 		skb_dst_drop(skb);
+ 		skb_bpf_redirect_clear(skb);
+ 		ret = bpf_prog_run_pin_on_cpu(prog, skb);
+ 		ret = sk_psock_map_verd(ret, skb_bpf_redirect_fetch(skb));
  		skb->sk = NULL;
  	}
  	sk_psock_tls_verdict_apply(skb, psock->sk, ret);
@@@ -876,13 -995,13 +991,14 @@@ static void sk_psock_strp_read(struct s
  		kfree_skb(skb);
  		goto out;
  	}
- 	prog = READ_ONCE(psock->progs.skb_verdict);
 -	skb_set_owner_r(skb, sk);
+ 	prog = READ_ONCE(psock->progs.stream_verdict);
  	if (likely(prog)) {
 +		skb->sk = sk;
- 		tcp_skb_bpf_redirect_clear(skb);
- 		ret = sk_psock_bpf_run(psock, prog, skb);
- 		ret = sk_psock_map_verd(ret, tcp_skb_bpf_redirect_fetch(skb));
+ 		skb_dst_drop(skb);
+ 		skb_bpf_redirect_clear(skb);
+ 		ret = bpf_prog_run_pin_on_cpu(prog, skb);
+ 		ret = sk_psock_map_verd(ret, skb_bpf_redirect_fetch(skb));
 +		skb->sk = NULL;
  	}
  	sk_psock_verdict_apply(psock, skb, ret);
  out:
@@@ -953,13 -1115,15 +1112,16 @@@ static int sk_psock_verdict_recv(read_d
  		kfree_skb(skb);
  		goto out;
  	}
- 	prog = READ_ONCE(psock->progs.skb_verdict);
 -	skb_set_owner_r(skb, sk);
+ 	prog = READ_ONCE(psock->progs.stream_verdict);
+ 	if (!prog)
+ 		prog = READ_ONCE(psock->progs.skb_verdict);
  	if (likely(prog)) {
 +		skb->sk = sk;
- 		tcp_skb_bpf_redirect_clear(skb);
- 		ret = sk_psock_bpf_run(psock, prog, skb);
- 		ret = sk_psock_map_verd(ret, tcp_skb_bpf_redirect_fetch(skb));
+ 		skb_dst_drop(skb);
+ 		skb_bpf_redirect_clear(skb);
+ 		ret = bpf_prog_run_pin_on_cpu(prog, skb);
+ 		ret = sk_psock_map_verd(ret, skb_bpf_redirect_fetch(skb));
 +		skb->sk = NULL;
  	}
  	sk_psock_verdict_apply(psock, skb, ret);
  out:

Content of type "application/pgp-signature" skipped

Powered by blists - more mailing lists