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Tasklist

FS#70952 - urxvt will not open and uses 100% cpu after update to 9.26-1

Attached to Project: Community Packages
Opened by John Henderson (jwhendy) - Wednesday, 19 May 2021, 22:27 GMT
Last edited by Andreas Radke (AndyRTR) - Saturday, 22 May 2021, 20:20 GMT
Task Type Bug Report
Category Packages
Status Closed
Assigned To Levente Polyak (anthraxx)
Architecture All
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description: I updated with pacman -Syu before my last shutdown. Upon boot, rxvt-unicode (urxvt) would not start for me. Using top showed 95-100% cpu utilization, requiring me to kill it. Downgrading to 9.22-10 works fine.


Additional info:
* package version(s): 9.22-10 works, 9.26-1 does not

* config and/or log files etc.

I exited i3 to a new tty and tried starting urxvt and got no output. My journalctl just has lines like so:

$ journalctl -b | grep rxvt

May 19 14:33:20 voltaur systemd-coredump[6825]: Process 4199 (urxvt) of user 1000 dumped core.
May 19 14:33:53 voltaur systemd-coredump[7543]: Process 6765 (urxvt) of user 1000 dumped core.

$ sudo journalctl | grep -i error
May 19 14:33:15 voltaur kernel: urxvt[4199]: segfault at 7ffc1231fe78 ip 00007f862da3f481 sp 00007ffc1231fe20 error 6 in libX11.so.6.4.0[7f862da15000+8a000]
May 19 14:33:48 voltaur kernel: urxvt[6765]: segfault at 7ffde2d86ff8 ip 00007fe1a5dd8a99 sp 00007ffde2d86fb0 error 6 in libc-2.33.so[7fe1a5d75000+14c000]
May 19 14:34:11 voltaur kernel: urxvt[6806]: segfault at 7ffd9c83efb8 ip 00007f61e75cd481 sp 00007ffd9c83ef60 error 6 in libX11.so.6.4.0[7f61e75a3000+8a000]
May 19 14:34:46 voltaur kernel: urxvt[7550]: segfault at 7ffc27b70eb8 ip 00007f231a162481 sp 00007ffc27b70e60 error 6 in libX11.so.6.4.0[7f231a138000+8a000]
May 19 15:47:07 voltaur kernel: urxvt[9855]: segfault at 7fffb4e55e68 ip 00007f8adbebe481 sp 00007fffb4e55e10 error 6 in libX11.so.6.4.0[7f8adbe94000+8a000]
May 19 15:47:44 voltaur kernel: urxvt[9911]: segfault at 7ffe96945ff8 ip 00007f8190041d96 sp 00007ffe96945ff0 error 6 in libc-2.33.so[7f818ffde000+14c000]
May 19 15:47:47 voltaur kernel: urxvt[9919]: segfault at 7fff5537bff0 ip 00007f44f76eaa75 sp 00007fff5537bf90 error 6 in libc-2.33.so[7f44f7687000+14c000]
May 19 15:54:29 voltaur kernel: urxvt[9938]: segfault at 7ffd93cf4ff8 ip 00007f81139da6b5 sp 00007ffd93cf5000 error 6 in libX11.so.6.4.0[7f8113967000+8a000]


* misc info

$ uname -a
Linux voltaur 5.12.3-arch1-1 #1 SMP PREEMPT Wed, 12 May 2021 17:54:18 +0000 x86_64 GNU/Linux

As mentioned, running i3 (i3-gaps 4.19.1-1). If relevant, using nvidia dedicated graphics on nvidia-465.27-6.

If relevant to the X11 errors:
$ pacman -Q | grep xorg
xorg-fonts-encodings 1.0.5-2
xorg-mkfontscale 1.2.1-2
xorg-server 1.20.11-1
xorg-server-common 1.20.11-1
xorg-setxkbmap 1.3.2-2
xorg-xauth 1.1-2
xorg-xbacklight 1.2.3-2
xorg-xinit 1.4.1-3
xorg-xinput 1.6.3-2
xorg-xkbcomp 1.4.5-1
xorg-xkill 1.0.5-2
xorg-xmodmap 1.0.10-2
xorg-xprop 1.2.5-1
xorg-xrandr 1.5.1-2
xorg-xrdb 1.2.0-2
xorg-xset 1.2.4-2
xorgproto 2021.4-1

* steps to reproduce:

- update rxvt-unicode from 9.22-1 to 9.26-10
- try to run rxvt-unicode

Given the segfaults, this is potentially look like a urxvt and xorg interaction issue? I don't see anything other than misc mouse/keyboard lag errors from libinput in my Xorg.0.log, but if that's relevant (or any other information), kindly let me know and I can post whatever is helpful.
This task depends upon

Closed by  Andreas Radke (AndyRTR)
Saturday, 22 May 2021, 20:20 GMT
Reason for closing:  None
Additional comments about closing:  user comment: This appears due to my .Xdefaults config and should either go upstream to Xorg or urxvt (or is expected, in which case... lesson learned on my end and I appreciate the replication attempt).
Comment by Antonio Rojas (arojas) - Friday, 21 May 2021, 16:33 GMT
Works fine here, please report upstream (ideally with a full backtrace)
Comment by John Henderson (jwhendy) - Saturday, 22 May 2021, 01:24 GMT
Thanks for trying to reproduce, Antonio. While urxvt was acting up I tried to fallback on xterm and got some odd output:
```
$ xterm
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 1 (X_CreateWindow)
Serial number of failed request: 40
Current serial number in output stream: 48
```

I found that by removing .Xdefaults, things were working. Hmmm. I still have not figured out what, exactly, was going on. I did make this a while ago and it looks like i wasn't clear on * vs. . for the options. I noticed some wonky things upon inspection like `*.color1: foo` where I'd used both, for example. I *thought* I'd narrowed it down to depth: 32, but after my walk through it's working and I no longer get errors in urxvt (freeze/high cpu) or xterm. I posted the original (.Xdefaults) and the modified/working (.Xresources now per arch wiki) for reference.

If you know urxvt/X well... could you coach on continuing to post upstream? It might be X related, but in either case... I'm leaning toward thinking that a config file shouldn't break a system so easily! Thoughts?

I'll request closure here, but if you have a leaning on what might be up, I'm happy to take upstream. Otherwise... if this is an obvious goof on my part and such behavior is expected as a result, well, wouldn't be the first time :)
   .Xresources (1.5 KiB)
Comment by Frederic Van Assche (fredericva) - Saturday, 22 May 2021, 19:44 GMT
In case anyone else runs into this issue, here's how I solved it on my end:

If you have any of the following in your .Xresources or .Xdefaults:

URxvt*tab-bg
URxvt*tab-fg
URxvt*tabbar-bg
URxvt*tabbar-fg

you will need to add in the 'tabbedex' prefix like so:

URxvt*tabbedex.tab-bg

I'd still count this as a bug, as with the wrong resources urxvt just hangs and needs a kill -9, instead of either ignoring the malformed resources or printing a warning.

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