Fw: [Bug 102861] New: soft lockup with "inet: fix races with reqsk timers"

Fw: [Bug 102861] New: soft lockup with "inet: fix races with reqsk timers"

[Stephen Hemminger]

Begin forwarded message:

Date: Fri, 14 Aug 2015 14:32:56 +0000
From: "bugzilla-daemon@bugzilla.kernel.org" <bugzilla-daemon@bugzilla.kernel.org>
To: "shemminger@linux-foundation.org" <shemminger@linux-foundation.org>
Subject: [Bug 102861] New: soft lockup with "inet: fix races with reqsk timers"


https://bugzilla.kernel.org/show_bug.cgi?id=102861

            Bug ID: 102861
           Summary: soft lockup with "inet: fix races with reqsk timers"
           Product: Networking
           Version: 2.5
    Kernel Version: net-next d52736e2
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: IPV4
          Assignee: shemminger@linux-foundation.org
          Reporter: andreas.reis@gmail.com
        Regression: No

Created attachment 184921
  --> https://bugzilla.kernel.org/attachment.cgi?id=184921&action=edit
dmesg picture

Happens withing 10min while eg. torrenting. net-next from a few days ago was
fine.

Picture as ssh hangs and dmesg to disk lands in nirvana instead.

Checked via reverting this commit, which allowed me to merrily torrent without
lockup again. This does not 100% prove that it was actually the cause, ofc.

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Re: Fw: [Bug 102861] New: soft lockup with "inet: fix races with reqsk timers"

[Eric Dumazet]

On Fri, 2015-08-14 at 08:57 -0700, Stephen Hemminger wrote:
> 
> Begin forwarded message:
> 
> Date: Fri, 14 Aug 2015 14:32:56 +0000
> From: "bugzilla-daemon@bugzilla.kernel.org" <bugzilla-daemon@bugzilla.kernel.org>
> To: "shemminger@linux-foundation.org" <shemminger@linux-foundation.org>
> Subject: [Bug 102861] New: soft lockup with "inet: fix races with reqsk timers"
> 
> 
> https://bugzilla.kernel.org/show_bug.cgi?id=102861
> 
>             Bug ID: 102861
>            Summary: soft lockup with "inet: fix races with reqsk timers"
>            Product: Networking
>            Version: 2.5
>     Kernel Version: net-next d52736e2
>           Hardware: All
>                 OS: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: IPV4
>           Assignee: shemminger@linux-foundation.org
>           Reporter: andreas.reis@gmail.com
>         Regression: No
> 
> Created attachment 184921
>   --> https://bugzilla.kernel.org/attachment.cgi?id=184921&action=edit
> dmesg picture
> 
> Happens withing 10min while eg. torrenting. net-next from a few days ago was
> fine.
> 
> Picture as ssh hangs and dmesg to disk lands in nirvana instead.
> 
> Checked via reverting this commit, which allowed me to merrily torrent without
> lockup again. This does not 100% prove that it was actually the cause, ofc.
> 

Fixed with :
http://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=83fccfc3940c4a2db90fd7e7079f5b465cd8c6af