Hi,
> Multiple Fedora 25 users running 1.19-rc1 are reporting a backtrace
> related to an InitFonts -> SendErrorToClient -> FlushAllOutput
> call chain.
>
> Since there is no trivial reproducer this is somewhat hard to debug,
> hence this mail. Anyone have a clue / hint ? See:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1382444
Actually, I think we cannot really trust the symbols from Xorg's own generated
backtrace, however, looking at the addresses, the sequence makes some more
sense:
FlushAllOutput() in /usr/src/debug/xorg-server-20160929/os/io.c:612
Dispatch() in /usr/src/debug/xorg-server-20160929/dix/dispatch.c:3491
dix_main() in /usr/src/debug/xorg-server-20160929/dix/main.c:296
with /usr/src/debug/xorg-server-20160929/os/io.c:612
612 xorg_list_for_each_entry_safe(client, tmp, &output_pending_clients,
output_pending) {
613 if (client->clientGone)
614 continue;
615 if (!client_is_ready(client)) {
616 oc = (OsCommPtr) client->osPrivate;
617 (void) FlushClient(client, oc, (char *) NULL, 0);
618 } else
619 NewOutputPending = TRUE;
620 }
So it could be that output_pending_clients list got corrupted somehow.
Not sure I can go much further than that with so little data, but if that rings
a bell with someone else...
Cheers,
Olivier
_______________________________________________
[email protected]: X.Org development
Archives: http://lists.x.org/archives/xorg-devel
Info: https://lists.x.org/mailman/listinfo/xorg-devel
