lkml.org 
[lkml]   [2011]   [Feb]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    SubjectRe: [BUG] 2.6.38-rc2: Circular Locking Dependency
    From
    From: Knut Petersen <Knut_Petersen@t-online.de>
    Date: Mon, 24 Jan 2011 10:25:55 +0100

    > As I was hunting something different I found the following (potential)
    > problem on an openSuSE 11.3 system with kernel 2.6.38-rc2.
    > The message is triggerd by smpppd starting a dsl connection.
    >
    > Knut
    >
    >
    > NET: Registered protocol family 24
    >
    > =======================================================
    > [ INFO: possible circular locking dependency detected ]
    > 2.6.38-rc2-kape #7
    > -------------------------------------------------------
    > pppd/2529 is trying to acquire lock:
    > (&(&pch->downl)->rlock){+.....}, at: [<f814a634>] ppp_push+0x59/0x4a8
    > [ppp_generic]
    >
    > but task is already holding lock:
    > (&(&ppp->wlock)->rlock){+.-...}, at: [<f814ae1b>]
    > ppp_xmit_process+0x19/0x451 [ppp_generic]
    >
    > which lock already depends on the new lock.

    I've stared over this trace several times and can't figure out what
    the problem is.

    Paul, any idea?


    \
     
     \ /
      Last update: 2011-02-07 08:31    [W:0.018 / U:152.744 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site