bpf.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Jules Irenge <jbi.octave@gmail.com>
To: Eric Dumazet <edumazet@google.com>
Cc: Jules Irenge <jbi.octave@gmail.com>,
	boqun.feng@gmail.com, LKML <linux-kernel@vger.kernel.org>,
	bpf <bpf@vger.kernel.org>, netdev <netdev@vger.kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
	Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
	Jakub Kicinski <kuba@kernel.org>
Subject: Re: [PATCH 3/8] tcp: Add missing annotation for tcp_child_process()
Date: Wed, 11 Mar 2020 01:28:49 +0000 (GMT)	[thread overview]
Message-ID: <alpine.LFD.2.21.2003110127440.25519@ninjahub.org> (raw)
In-Reply-To: <CANn89iJc9e5fQEWerHgDM1g2vp_1EEj0EntbCvccCzAyusHtdg@mail.gmail.com>

Thanks for the feedbacks. Good to know I have not used lockdep but I will 
try it.

On Tue, 10 Mar 2020, Eric Dumazet wrote:

> On Tue, Mar 10, 2020 at 6:09 PM Jules Irenge <jbi.octave@gmail.com> wrote:
> >
> > Sparse reports warning at tcp_child_process()
> > warning: context imbalance in tcp_child_process() - unexpected unlock
> > The root cause is the missing annotation at tcp_child_process()
> >
> > Add the missing __releases(&((child)->sk_lock.slock)) annotation
> >
> > Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
> > ---
> >  net/ipv4/tcp_minisocks.c | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
> > index ad3b56d9fa71..0e8a5b6e477c 100644
> > --- a/net/ipv4/tcp_minisocks.c
> > +++ b/net/ipv4/tcp_minisocks.c
> > @@ -817,6 +817,7 @@ EXPORT_SYMBOL(tcp_check_req);
> >
> >  int tcp_child_process(struct sock *parent, struct sock *child,
> >                       struct sk_buff *skb)
> > +       __releases(&((child)->sk_lock.slock))
> >  {
> >         int ret = 0;
> >         int state = child->sk_state;
> 
> 
> Yeah, although we prefer to use lockdep these days ;)
> 
> Reviewed-by: Eric Dumazet <edumazet@google.com>
> 

  reply	other threads:[~2020-03-11  1:29 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <0/8>
2020-03-11  1:09 ` [PATCH 0/8] Lock warning cleanups Jules Irenge
2020-03-11  1:09   ` [PATCH 1/8] bpf: Add missing annotations for __bpf_prog_enter() and __bpf_prog_exit() Jules Irenge
2020-03-13 19:49     ` Daniel Borkmann
2020-03-11  1:09   ` [PATCH 2/8] raw: Add missing annotations to raw_seq_start() and raw_seq_stop() Jules Irenge
2020-03-11  1:15     ` Eric Dumazet
2020-03-11  1:40       ` Jules Irenge
2020-03-12  6:20     ` David Miller
2020-03-11  1:09   ` [PATCH 3/8] tcp: Add missing annotation for tcp_child_process() Jules Irenge
2020-03-11  1:14     ` Eric Dumazet
2020-03-11  1:28       ` Jules Irenge [this message]
2020-03-12  6:20     ` David Miller
2020-03-11  1:09   ` [PATCH 4/8] netfilter: Add missing annotation for ctnetlink_parse_nat_setup() Jules Irenge
2020-03-27 17:22     ` Pablo Neira Ayuso
2020-03-11  1:09   ` [PATCH 5/8] netfilter: conntrack: Add missing annotations for nf_conntrack_all_lock() and nf_conntrack_all_unlock() Jules Irenge
2020-03-27 17:22     ` Pablo Neira Ayuso
2020-03-11  1:09   ` [PATCH 6/8] net: Add missing annotation for *netlink_seq_start() Jules Irenge
2020-03-12  6:20     ` David Miller
2020-03-11  1:09   ` [PATCH 7/8] ALSA: firewire-tascam: Add missing annotation for tscm_hwdep_read_queue() Jules Irenge
2020-03-11  3:19     ` Takashi Sakamoto
2020-03-11  6:56     ` Takashi Iwai
2020-03-11  1:09   ` [PATCH 8/8] ALSA: firewire-tascam: Add missing annotation for tscm_hwdep_read_locked() Jules Irenge
2020-03-11  3:18     ` Takashi Sakamoto
2020-03-11  6:56     ` Takashi Iwai

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=alpine.LFD.2.21.2003110127440.25519@ninjahub.org \
    --to=jbi.octave@gmail.com \
    --cc=boqun.feng@gmail.com \
    --cc=bpf@vger.kernel.org \
    --cc=davem@davemloft.net \
    --cc=edumazet@google.com \
    --cc=kuba@kernel.org \
    --cc=kuznet@ms2.inr.ac.ru \
    --cc=linux-kernel@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=yoshfuji@linux-ipv6.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).