On Sat, 4 Sep 2021 17:52:09 +0900 Florian Schaefer <list...@netego.de> said:
> On 9/4/21 4:55 PM, Carsten Haitzler wrote:
> > On Sat, 4 Sep 2021 11:47:20 +0900 Florian Schaefer <list...@netego.de> said:
> >
> >> Raster,
> >>
> >> Thanks for the quick reply and help!
> >>
> >> OK, so ibox seems to be the culprit. With the module unloaded I was not
> >> able to crash the system. That's quite interesting, on my personal
> >> machine I am using ibox ever since and never had any issues (just like
> >> your test yesterday). So this seems to be somehow specific to my new
> >> system here.
> >>
> >> Anyway, thanks for pointing me into the right direction. With this I now
> >> also finally understood how to identify which one of the many threads
> >> was the segfaulting one. ;-)
> >>
> >> Now for the backtrace. As it is quite short I will paste it below
> >>
> >> ========================================
> >> (gdb) bt
> >> #0 0x00007f23b417f872 in __libc_pause () at
> >> ../sysdeps/unix/sysv/linux/pause.c:29
> >> #1 0x0000564440d159f7 in e_alert_show () at ../src/bin/e_alert.c:43
> >> #2 0x0000564440cda47a in _e_crash () at ../src/bin/e_signals.c:81
> >> #3 0x0000564440cda4a9 in e_sigseg_act (x=<optimized out>,
> >> info=<optimized out>, data=<optimized out>) at ../src/bin/e_signals.c:91
> >> #4 0x00007f23b4180140 in <signal handler called> () at
> >> /lib/x86_64-linux-gnu/libpthread.so.0
> >> #5 0x00007f23a57df211 in _ibox_icon_fill (ic=0x5644419a2910) at
> >> ../src/modules/ibox/e_mod_main.c:636
> >> #6 0x00007f23a57df330 in _ibox_cb_icon_fill_timer (data=<optimized
> >> out>) at ../src/modules/ibox/e_mod_main.c:526
> >> #7 0x00007f23b4c25581 in _ecore_call_task_cb (data=<optimized out>,
> >> func=<optimized out>) at ../src/lib/ecore/ecore_private.h:456
> >> #8 _ecore_timer_legacy_tick (data=0x564441cbf230, event=0x7ffd43c61150)
> >> at ../src/lib/ecore/ecore_timer.c:172
> >> #9 0x00007f23b3b1c130 in _event_callback_call (obj_id=0x400000379067,
> >> pd=0x5644412371e0, desc=0x7f23b4c521e0
> >> <_EFL_LOOP_TIMER_EVENT_TIMER_TICK>, event_info=<optimized out>,
> >> legacy_compare=legacy_compare@entry=0 '\000') at
> >> ../src/lib/eo/eo_base_class.c:2114
> >> #10 0x00007f23b3b1c3ec in _efl_object_event_callback_call
> >> (obj_id=<optimized out>, pd=<optimized out>, desc=<optimized out>,
> >> event_info=<optimized out>) at ../src/lib/eo/eo_base_class.c:2186
> >> #11 0x00007f23b3b16620 in efl_event_callback_call (obj=<optimized out>,
> >> desc=desc@entry=0x7f23b4c521e0 <_EFL_LOOP_TIMER_EVENT_TIMER_TICK>,
> >> event_info=event_info@entry=0x0) at ../src/lib/eo/eo_base_class.c:2189
> >> #12 0x00007f23b4c26e15 in _efl_loop_timer_expired_call
> >> (obj=obj@entry=0x40000000012d, pd=pd@entry=0x5644411fd460,
> >> when=when@entry=436613.23437423998) at ../src/lib/ecore/ecore_timer.c:669
> >> #13 0x00007f23b4c26f43 in _efl_loop_timer_expired_timers_call
> >> (obj=obj@entry=0x40000000012d, pd=pd@entry=0x5644411fd460,
> >> when=436613.23437423998) at ../src/lib/ecore/ecore_timer.c:621
> >> #14 0x00007f23b4bf2fae in _ecore_main_loop_iterate_internal
> >> (obj=obj@entry=0x40000000012d, pd=pd@entry=0x5644411fd460,
> >> once_only=once_only@entry=0) at ../src/lib/ecore/ecore_main.c:2431
> >> #15 0x00007f23b4bf383f in _ecore_main_loop_begin
> >> (obj=obj@entry=0x40000000012d, pd=pd@entry=0x5644411fd460) at
> >> ../src/lib/ecore/ecore_main.c:1231
> >> #16 0x00007f23b4bf7e6d in _efl_loop_begin (obj=0x40000000012d,
> >> pd=0x5644411fd460) at ../src/lib/ecore/efl_loop.c:57
> >> #17 0x00007f23b4bf7233 in efl_loop_begin (obj=0x40000000012d) at
> >> src/lib/ecore/efl_loop.eo.c:28
> >> #18 0x00007f23b4bf390c in ecore_main_loop_begin () at
> >> ../src/lib/ecore/ecore_main.c:1316
> >> #19 0x0000564440cb8c50 in main (argc=<optimized out>, argv=<optimized
> >> out>) at ../src/bin/e_main.c:1121
> >>
> >> (gdb) fr 5
> >> #5 0x00007f23a57df211 in _ibox_icon_fill (ic=0x5644419a2910) at
> >> ../src/modules/ibox/e_mod_main.c:636
> >> 636 if ((ic->ibox->inst->ci->show_preview) &&
> >> (edje_object_part_exists(ic->o_holder, "e.swallow.preview")))
> >>
> >> (gdb) list
> >> 631 }
> >> 632
> >> 633 static void
> >> 634 _ibox_icon_fill(IBox_Icon *ic)
> >> 635 {
> >> 636 if ((ic->ibox->inst->ci->show_preview) &&
> >> (edje_object_part_exists(ic->o_holder, "e.swallow.preview")))
> >> 637 _ibox_icon_fill_preview(ic, EINA_FALSE);
> >> 638 else
> >> 639 _ibox_icon_fill_icon(ic);
> >> 640
> >>
> >> (gdb) print ic
> >> $1 = (IBox_Icon *) 0x5644419a2910
> >>
> >> (gdb) print *ic
> >> $2 = {ibox = 0x564441cc3fe0, o_holder = 0x0, o_icon = 0x0, o_holder2 =
> >> 0x0, o_icon2 = 0x0, client = 0x0, drag = {start = 0 '\000', dnd = 0
> >> '\000', x = 0, y = 0, dx = 0, dy = 128}}
> >>
> >> (gdb) print *(ic->ibox)
> >> $3 = {inst = 0x40, o_box = 0xe1, o_drop = 0x564441a499b0, o_drop_over =
> >> 0x7f23b4165cb0 <main_arena+304>, o_empty = 0x7474756200726162,
> >> ic_drop_before = 0x81646c3698761235, drop_before = 1103904792, icons =
> >> 0x0, zone = 0x698761254, dnd_x = 0, dnd_y = 1769170290}
> >>
> >> (gdb) print *(ic->ibox->inst)
> >> Cannot access memory at address 0x40
> >> ========================================
> >>
> >> So somehow we've got some garbage pointer in ic->ibox->inst.
> >
> > actualluy.. ic->ibox is junk. iut happens to point to some memory we can
> > access but it's full of ... garbage. like dnd_y is and unrealistic coord.
> > zone does not look like a proper pointer (o_drop does) and o_box is nothing
> > like what a pointer should look like. drop_before seems junky too. so ...
> > what happened to ic->ibox? or ... for that matter what happened to ic?
> > maybe ic has been freed and now the ibox ptr has been overwritten to point
> > to some junk as i cant imagine the ibox struct being freed as that struct
> > is still there for the ibox gadget. so ...
>
> Ah I see. It certainly makes debugging easier if you know what a pointer
> is supposed to look like. :-)
>
> > well turning on ASAN (search enlightenment.org for asan and how to enable
> > it) in efl and e would probably instantly point out the problem. you can
> > try that as an exercise in being able to divine better debug info from efl
> > + e. it's pretty easy now with meson.... :) unlike valgrind it's not
> > prohibitively slow either. it's usable day to day on a fast enough machine.
>
> Interesting. Thanks for the pointer to new debugging tools. (And yes,
> valgrind is really slow.) I found the documentation you mentioned. I
> think I will give it a try before applying your patch, just to see what
> happens and to be able to play around with it for a bit.
>
> > and i can see the problem:
> >
> > ecore_timer_add(0.1, _ibox_cb_icon_fill_timer, ic);
> >
> > a timer is created to fill the icon in 0.1 sec... but ... imagine the icon
> > (ic) has been freed/deleted BEFORE the timer fires... in 0.1sec from
> > now. ... someone added a timer without remembering to delete it when the
> > icon the timer is for is deleted! a bit sloppy...
>
> Bad boy. ;-)
>
> This means that on my old laptop I never ran into any issues because it
> is just too slow for this race condition to occur?
>
> > d12acf0d01e628d71548adbb77670c7e40aef043 commit in git now fixes that.
> > problem is in e ... not efl :)
>
> Great. Thanks! As said before, I will try to tackle this with ASAN first
> for training and then see how your solution is holding up. That will
> hopefully be tomorrow.
>
> Now to the second point of my first mail from yesterday: Is there any
> way for me to disable/silence the error popup on startup that no ACPI
> daemon is running?
oh yes. install acpid and have it run. :)
> Cheers,
> Florian
>
> >> I tried to poke into the preceding frames (#6 and #7) but only hit
> >> optimized out variables. This is efl territory, right? This morning I
> >> recompiled enlightenment with "-O0 -g" but I guess I should also have
> >> done the same to efl. Well, I can do this the next time I'm in office if
> >> helpful.
> >>
> >> Any ideas?
> >>
> >> For now I gave ibar a try. Not exactly a replacement for me. I don't
> >> need a launcher (using everything and favorites menu instead) or a
> >> tracker of running windows (I know what windows I have open). I only
> >> need something to show my minimized windows so that I can open them
> >> again (I know, they appear with Alt+Tab...) and this seems to be the
> >> only scenario that cannot be reproduced by ibar. -- I guess I never
> >> bought into the MacOS style launcher bar. ;-)
> >
> > ibar will show both running and minimized icons for windows .. but ok -
> > yeah - it doesnt "show only minimized"... :)
> >
> >> Cheers
> >> Florian
> >>
> >> On 9/4/21 1:25 AM, Carsten Haitzler wrote:
> >>> On Fri, 3 Sep 2021 21:04:35 +0900 Florian Schaefer <list...@netego.de>
> >>> said:
> >>>
> >>> quick - if you unload the ibox module ... does the problem stop? that
> >>> crash is inside ibox code - memory it's accessing is bad/wrong - why i
> >>> don't know. not more information. like 363 in ibox is:
> >>>
> >>> if ((ic->ibox->inst->ci->show_preview) &&
> >>> (edje_object_part_exists(ic->o_holder, "e.swallow.preview")))
> >>>
> >>> so what is ic? whats is ic->ibox, ic->ibox->inst, ic->ibox->inst->ci ?
> >>>
> >>> if you attach gdb when e crashes and dump these values - i'd know more.
> >>> maybe. I actually stopped using ibox a while ago since ibar does both
> >>> effectively these days. perhaps it is an ibox bug and i havent seen it as
> >>> i dont use it. so try the above, if it goes away - attach gdb
> >>>
> >>> i can say that i dont see the problem here with ibox enabled and on amd +
> >>> e (git).
> >>>
> >>>> Dear everyone,
> >>>>
> >>>> so I got a new desktop PC at work and the first thing I did, of course,
> >>>> was to install Debian sid and enlightenment-git. ;-)
> >>>>
> >>>> The machine has a Nvidia T600 card and this is where troubles probably
> >>>> begin. As I kind of need the graphics performance for CAD I went with
> >>>> the drivers from Nvidia (the stock open source drivers were terribly
> >>>> slow).
> >>>>
> >>>> Now what happens is that enlightenment crashes often. Like kind of
> >>>> constantly. I got the impression it happens mostly when several windows
> >>>> are going through their appearance fade-in transition at the same time.
> >>>> Then the "red screen of death" appears and I need to press F1 to
> >>>> continue. With some applications this happens always (Eagle anyone?)
> >>>> with others only sometimes. After the forced restart many windows (e.g.
> >>>> terminology always, firefox sometimes) need to be minimized and
> >>>> uncovered again for their content to display again. Some dialog windows
> >>>> won't even show their content from the beginning and instead just some
> >>>> different portion of the screen. Needless to say that for a machine at
> >>>> work this is not an optimal situation.
> >>>>
> >>>> The most pressing issue are of course the crashes. I recompiled
> >>>> everything with debugging symbols and optimization disabled (or at least
> >>>> I thought so, some things seem still to be optimized away) to get some
> >>>> meaningful dumps. One of which I uploaded to pastebin
> >>>> (https://pastebin.com/YWSarC10) hoping that it makes sense to someone.
> >>>>
> >>>> I am sure that it is not E that is "at fault" but Nvidia, but for now I
> >>>> need to find a way around this so that I can work without having to
> >>>> reset everything every five minutes. Any ideas?
> >>>>
> >>>> Oh, I also tried to disable OpenGL in the compositor settings and
> >>>> choosing the software option. And it still crashes!
> >>>>
> >>>> For starters I was hoping that I can just switch off all the window
> >>>> transition-fading eye-candy but I did not understand whether this is
> >>>> possible. Is it?
> >>>>
> >>>> Finally, being a desktop system (my first in like 10 years or so) it
> >>>> does not run an acpi daemon. I don't really see any reason to do so.
> >>>> Therefore E also complains on every startup that no acpi daemon can be
> >>>> found. I did not find any compile time or runtime options to disable
> >>>> acpi. Is there a way to silence this error/warning?
> >>>>
> >>>> Cheers,
> >>>> Florian
> >>>>
> >>>>
> >>>> _______________________________________________
> >>>> enlightenment-users mailing list
> >>>> enlightenment-users@lists.sourceforge.net
> >>>> https://lists.sourceforge.net/lists/listinfo/enlightenment-users
> >>>>
> >>>
> >>>
> >>
> >>
> >> _______________________________________________
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> >> enlightenment-users@lists.sourceforge.net
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> >>
> >
> >
>
>
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--
------------- Codito, ergo sum - "I code, therefore I am" --------------
Carsten Haitzler - ras...@rasterman.com
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