labwc (wayland) crashes on exit

[robertoj]

I have been trying to set up labwc as a replacement for openbox (X11) in my project.

 

I can install it very simply by building a minimal image Trixie (Bookworm does not include labwc), then

* sudo apt install labwc seatd foot

* at the screen with usb keyboard (not from SSH) start: labwc -d -s foot

 

Then I am in labwc, with a terminal emulator on my HDMI screen

 

When I right click on the desktop and choose "Exit", I get a kernel oops:

Spoiler

Armbian-unofficial 25.08.0-trunk Trixie ttyS0

orangepizero3 login: Internal error: Oops - BUG: 00000000f2000800 [#1]  SMP
Modules linked in: rfcomm bnep hci_uart btqca btrtl btintel btbcm bluetooth ecdh_generic ecc sprdwl_ng sunxi_addr zram snd_soc_hdmi_codec sun50i_h6_prcm_ppu snd_soc_sunxi_machine snd_soc_sunxi_ahub panel_mipi_dbi dw_hdmi_i2s_audio dw_hdmi_cec cmdlinepart drm_mipi_dbi snd_soc_sunxi_ahub_dam spi_nor sun8i_ce backlight cfg80211 crypto_engine display_connector binfmt_misc uio_pdrv_genirq uio sprdbt_tty uwe5622_bsp_sdio rfkill configfs sunxi musb_hdrc phy_generic
CPU: 2 UID: 1000 PID: 5465 Comm: labwc Tainted: G        W           6.15.4-edge-sunxi64 #1 NONE
Tainted: [W]=WARN
Hardware name: OrangePi Zero3 (DT)
pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : dma_buf_release+0x8c/0x98
lr : __dentry_kill+0xb4/0x238
sp : ffff80008779bd40
x29: ffff80008779bd40 x28: ffff0000073d6180 x27: 0000000000000000
x26: 0000000000000000 x25: 0000000000000000 x24: ffff8000820932e8
x23: ffff000007d76220 x22: ffff000002486da0 x21: ffff000023b0c440
x20: ffff000023b0c440 x19: ffff00000746e800 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000 x15: ffff80008779bd10
x14: 0000000000000004 x13: ffff00000890f850 x12: 0000000000000000
x11: ffff000026d434d0 x10: ffff000026d43478 x9 : 0000000000000000
x8 : ffff80008779bb60 x7 : 0000000000000000 x6 : 00000000000009a3
x5 : 0000000000000000 x4 : 0000000000002771 x3 : 0000000000000000
x2 : ffffffffffffffff x1 : ffff800080a6b2d8 x0 : 0000000000000001
Call trace:
 dma_buf_release+0x8c/0x98 (P)
 __dentry_kill+0xb4/0x238
 dput+0xdc/0x224
 __fput+0x10c/0x2d4
 ____fput+0x10/0x18
 task_work_run+0x88/0x110
 do_notify_resume+0x11c/0x138
 el0_svc+0x110/0x120
 el0t_64_sync_handler+0x104/0x130
 el0t_64_sync+0x170/0x174
Code: d65f03c0 d4210000 94001345 17fffff1 (d4210000)
---[ end trace 0000000000000000 ]---
note: labwc[5465] exited with irqs disabled
------------[ cut here ]------------
WARNING: CPU: 2 PID: 0 at kernel/context_tracking.c:127 ct_kernel_exit.constprop.0+0x8c/0x94
Modules linked in: rfcomm bnep hci_uart btqca btrtl btintel btbcm bluetooth ecdh_generic ecc sprdwl_ng sunxi_addr zram snd_soc_hdmi_codec sun50i_h6_prcm_ppu snd_soc_sunxi_machine snd_soc_sunxi_ahub panel_mipi_dbi dw_hdmi_i2s_audio dw_hdmi_cec cmdlinepart drm_mipi_dbi snd_soc_sunxi_ahub_dam spi_nor sun8i_ce backlight cfg80211 crypto_engine display_connector binfmt_misc uio_pdrv_genirq uio sprdbt_tty uwe5622_bsp_sdio rfkill configfs sunxi musb_hdrc phy_generic
CPU: 2 UID: 0 PID: 0 Comm: swapper/2 Tainted: G      D W           6.15.4-edge-sunxi64 #1 NONE
Tainted: [D]=DIE, [W]=WARN
Hardware name: OrangePi Zero3 (DT)
pstate: 200003c5 (nzCv DAIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ct_kernel_exit.constprop.0+0x8c/0x94
lr : ct_idle_enter+0xc/0x14
sp : ffff800082213dd0
x29: ffff800082213dd0 x28: 0000000000000000 x27: 0000000000000000
x26: 0000000000000000 x25: ffff000002535140 x24: 0000000000000000
x23: 0000000000000000 x22: ffff800081f0ab98 x21: ffff000002535140
x20: ffff800081f0ab38 x19: ffff00003fd8b0f8 x18: 0000000000000001
x17: 3030303030303030 x16: 3030303030303020 x15: 0000016d01e397a2
x14: 0000016dfc674a7c x13: 000000000000005b x12: 0000000000000000
x11: ffff7fffbe127000 x10: 00000000000009e0 x9 : ffff800082213d50
x8 : ffff000002535b80 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 4000000000000002 x4 : ffff7fffbe13f000 x3 : ffff800082213dd0
x2 : 4000000000000000 x1 : ffff800081c4c0f8 x0 : ffff800081c4c0f8
Call trace:
 ct_kernel_exit.constprop.0+0x8c/0x94 (P)
 ct_idle_enter+0xc/0x14
 default_idle_call+0x18/0x34
 do_idle+0x1c0/0x20c
 cpu_startup_entry+0x30/0x38
 secondary_start_kernel+0x110/0x130
 __secondary_switched+0x74/0x78
---[ end trace 0000000000000000 ]---

roberto@orangepizero3:~$ ps ax|grep labwc
   1304 tty1     Zl+    0:01 [labwc] <defunct>
   1574 ttyS0    S+     0:00 grep labwc

 

 

And the labwc process shows "defunct"

 

Has anybody experienced this?

 

Maybe my kernel is too new? I used 6.15.4 (edge). My labwc is 0.8.3

 

The error in the terminal that started labwc (the HDMI screen) is:

...wlr_drm_lease_v1.c:103] Destroying wlr_drm_lease_device_v1 for /dev/dri/cardiationsodifier LINEAR (0x0000.....)

XT_EGL_image_storage_compression GL_EXT_texture_storage_compression GL_MESA_bgra im...

 

Same error message here:

https://github.com/labwc/labwc/issues/1424

 

Source of wlroots, mentioned in the error:

https://github.com/swaywm/wlroots/blob/master/types/wlr_drm_lease_v1.c

 

A developer in the labwc group suggest this might be GPU driver related

https://github.com/labwc/labwc/discussions/2923

 

Can someone with an SBC other than H618 try running labwc and exiting? What about xfce in wayland mode... does it crash?

Is anyone aware of a H618 or sunxi running wayland successfully?

Edited 16 hours ago by robertoj