All of lore.kernel.org
 help / color / mirror / Atom feed
From: Daniele Fucini <dfucini@gmail.com>
To: netdev@vger.kernel.org
Cc: jhs@mojatatu.com, davem@davemloft.net, spender@grsecurity.net,
	pageexec@freemail.hu, re.emese@gmail.com
Subject: size overflow in function qdisc_tree_decrease_qlen net/sched/sch_api.c
Date: Tue, 1 Dec 2015 02:00:05 +0100	[thread overview]
Message-ID: <20151201010005.GA23175@Fux-PC> (raw)

[-- Attachment #1: Type: text/plain, Size: 618 bytes --]

Hello,

I'm using a Grsecurity patched kernel (version 4.2.6-201511282239) and
I'm getting system freezes due to PaX detecting a size overflow in
function qdisc_tree_decrease_qlen net/sched/sch_api.c:769 whenever I use
Transmission BitTorrent client.

On the Grsecurity forum I was told it's probably an unintended integer
underflow that I should report upstream.

Here's the relevant log:
https://gist.github.com/cf54ccbb12ea65e146d4

And here's the thread on Grsecurity forum:
https://forums.grsecurity.net/viewtopic.php?f=3&t=4327

Let me know if there's any other information you need to help debug
this.

Daniele

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 473 bytes --]

             reply	other threads:[~2015-12-01  1:00 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-01  1:00 Daniele Fucini [this message]
2015-12-01  4:50 ` size overflow in function qdisc_tree_decrease_qlen net/sched/sch_api.c Cong Wang
2015-12-01 11:19   ` Daniele Fucini
2015-12-01 14:06     ` Eric Dumazet
2015-12-01 14:10       ` Eric Dumazet
2015-12-01 16:13         ` PaX Team
2015-12-01 16:34           ` Eric Dumazet
2015-12-01 18:43             ` Cong Wang
2015-12-01 19:09               ` Eric Dumazet
2015-12-01 19:17                 ` Cong Wang
2015-12-01 20:06                   ` Eric Dumazet
2015-12-01 22:33                     ` Eric Dumazet
2015-12-01 22:47                       ` Cong Wang
2015-12-01 23:10                         ` Eric Dumazet
2015-12-02  4:08                           ` [PATCH net] net_sched: fix qdisc_tree_decrease_qlen() races Eric Dumazet
2015-12-03 19:59                             ` David Miller
2015-12-01 22:40                     ` size overflow in function qdisc_tree_decrease_qlen net/sched/sch_api.c Cong Wang
2015-12-01 14:15       ` Eric Dumazet
2015-12-01 19:13         ` Daniele Fucini

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=20151201010005.GA23175@Fux-PC \
    --to=dfucini@gmail.com \
    --cc=davem@davemloft.net \
    --cc=jhs@mojatatu.com \
    --cc=netdev@vger.kernel.org \
    --cc=pageexec@freemail.hu \
    --cc=re.emese@gmail.com \
    --cc=spender@grsecurity.net \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.