Mailinglist Archive: opensuse-bugs (16603 mails)

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https://bugzilla.novell.com/show_bug.cgi?id=443459

User sndirsch@xxxxxxxxxx added comment
https://bugzilla.novell.com/show_bug.cgi?id=443459#c5


Stefan Dirsch <sndirsch@xxxxxxxxxx> changed:

           What    |Removed                                         |Added
----------------------------------------------------------------------------
             Status|REOPENED                                        |ASSIGNED




--- Comment #5 from Stefan Dirsch <sndirsch@xxxxxxxxxx>  2008-11-10 19:11:07 
MST ---
> [mi] EQ overflowing. The server is probably stuck in an infinite loop.
> [mi] mieqEnequeue: out-of-order valuator event; dropping.

This reminds me to the following commit for xorg-server 1.5 branch (included in
xorg-server 1.5.3, but we're shipping 1.5.2):

commit 483fb847b4363d09ff3347f61ad51bba1dd00602
Author: Adam Jackson <ajax@xxxxxxxxxx>
Date:   Fri Oct 10 16:33:24 2008 -0400

    mieq: Backtrace when the queue overflows.

    Since we're probably stuck down in a driver somewhere, let's at least
    try to point out where.  This will need to be rethought when the input
    thread work lands though.
    (cherry picked from commit b736f477f5324f79af30fc0f941ba0714a34ccda)

diff --git a/mi/mieq.c b/mi/mieq.c
index aaa247d..8037247 100644
--- a/mi/mieq.c
+++ b/mi/mieq.c
@@ -145,6 +145,7 @@ mieqEnqueue(DeviceIntPtr pDev, xEvent *e)
        oldtail = (oldtail - 1) % QUEUE_SIZE;
     }
     else {
+       static int stuck = 0;
        newtail = (oldtail + 1) % QUEUE_SIZE;
        /* Toss events which come in late.  Usually this means your server's
          * stuck in an infinite loop somewhere, but SIGIO is still getting
@@ -152,8 +153,13 @@ mieqEnqueue(DeviceIntPtr pDev, xEvent *e)
        if (newtail == miEventQueue.head) {
             ErrorF("[mi] EQ overflowing. The server is probably stuck "
                    "in an infinite loop.\n");
+           if (!stuck) {
+               xorg_backtrace();
+               stuck = 1;
+           }
            return;
         }
+       stuck = 0;
        miEventQueue.tail = newtail;
     }


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