qutebrowser crashing on Kubuntu 26.04

[grahamperrin]

grahamperrin@mowa219-gjp4 ~> qutebrowser https://www.freshports.org/lang/python311/
MESA-INTEL: warning: Haswell Vulkan support is incomplete
MESA-INTEL: warning: Haswell Vulkan support is incomplete
19:05:12 WARNING: GBM is not supported with the current configuration. Fallback to Vulkan rendering in Chromium.
MESA-INTEL: warning: Haswell Vulkan support is incomplete
MESA-INTEL: warning: Haswell Vulkan support is incomplete
fish: Job 1, 'qutebrowser https://www.freshpo…' terminated by signal SIGSEGV (Address boundary error)
grahamperrin@mowa219-gjp4 ~ [SIGSEGV]> qutebrowser https://www.freshports.org/lang/python311/
MESA-INTEL: warning: Haswell Vulkan support is incomplete
MESA-INTEL: warning: Haswell Vulkan support is incomplete
19:14:38 WARNING: GBM is not supported with the current configuration. Fallback to Vulkan rendering in Chromium.
MESA-INTEL: warning: Haswell Vulkan support is incomplete
MESA-INTEL: warning: Haswell Vulkan support is incomplete
[385847:385871:0626/191439.649684:ERROR:simple_file_enumerator.cc(58)] Could not get file info for /home/grahamperrin/.cache/qutebrowser/webengine/Cache/Cache_Data/todelete_3610484eb923023d_0_1
fish: Job 1, 'qutebrowser https://www.freshpo…' terminated by signal SIGSEGV (Address boundary error)
grahamperrin@mowa219-gjp4 ~ [SIGSEGV]> qutebrowser https://www.freshports.org/lang/python311/
MESA-INTEL: warning: Haswell Vulkan support is incomplete
MESA-INTEL: warning: Haswell Vulkan support is incomplete
19:15:05 WARNING: GBM is not supported with the current configuration. Fallback to Vulkan rendering in Chromium.
MESA-INTEL: warning: Haswell Vulkan support is incomplete
MESA-INTEL: warning: Haswell Vulkan support is incomplete
fish: Job 1, 'qutebrowser https://www.freshpo…' terminated by signal SIGSEGV (Address boundary error)
grahamperrin@mowa219-gjp4 ~ [SIGSEGV]> qutebrowser https://www.freshports.org/lang/python311/
MESA-INTEL: warning: Haswell Vulkan support is incomplete
MESA-INTEL: warning: Haswell Vulkan support is incomplete
19:15:17 WARNING: GBM is not supported with the current configuration. Fallback to Vulkan rendering in Chromium.
MESA-INTEL: warning: Haswell Vulkan support is incomplete
MESA-INTEL: warning: Haswell Vulkan support is incomplete
fish: Job 1, 'qutebrowser https://www.freshpo…' terminated by signal SIGSEGV (Address boundary error)
grahamperrin@mowa219-gjp4 ~ [SIGSEGV]> 

Much the same for the page for nano:

grahamperrin@mowa219-gjp4 ~> qutebrowser https://www.freshports.org/editors/nano/
MESA-INTEL: warning: Haswell Vulkan support is incomplete
MESA-INTEL: warning: Haswell Vulkan support is incomplete
19:24:56 WARNING: GBM is not supported with the current configuration. Fallback to Vulkan rendering in Chromium.
MESA-INTEL: warning: Haswell Vulkan support is incomplete
MESA-INTEL: warning: Haswell Vulkan support is incomplete
fish: Job 1, 'qutebrowser https://www.freshpo…' terminated by signal SIGSEGV (Address boundary error)
grahamperrin@mowa219-gjp4 ~ [SIGSEGV]> 

I toyed with qutebrowser only because https://www.freshports.org/lang/python311/ is currently quirky in one of my very heavily-extended Firefox profiles (not reproducible in a different profile, not reproducible in Tor Browser):

The effect is not long-lasting, normal appearance resumes after a few seconds.

[grahamperrin]

Side note: this post is not visible at https://mastodon.bsd.cafe/deck/@test-area@billboard.bsd.cafe, I guess that the test area is configured to not automatically post to Mastodon

[grahamperrin]

Not reproducible with qutebrowser latest on FreeBSD 15.1-RELEASE.

[grahamperrin]

From Getting the stack trace in Getting stacktraces on crashes | qutebrowser:

$ gdb -ex r --args $(readlink -f $(which python3)) -m qutebrowser --debug --temp-basedir

Result:

…
Thread 1 "python3.14" received signal SIGSEGV, Segmentation fault.
0x00007fffd5d4446c in ?? () from /usr/lib/x86_64-linux-gnu/libgallium-26.0.3-1ubuntu1.so
(gdb) bt
#0  0x00007fffd5d4446c in ?? () from /usr/lib/x86_64-linux-gnu/libgallium-26.0.3-1ubuntu1.so
#1  0x00007fffd4cb839d in ?? () from /usr/lib/x86_64-linux-gnu/libgallium-26.0.3-1ubuntu1.so
#2  0x00007fffd4ca3ea8 in ?? () from /usr/lib/x86_64-linux-gnu/libgallium-26.0.3-1ubuntu1.so
#3  0x00007fffd4f6a19f in ?? () from /usr/lib/x86_64-linux-gnu/libgallium-26.0.3-1ubuntu1.so
#4  0x00007fffd4f6b10f in ?? () from /usr/lib/x86_64-linux-gnu/libgallium-26.0.3-1ubuntu1.so
#5  0x00007fffe3409a90 in ?? () from /usr/lib/x86_64-linux-gnu/libQt6WebEngineCore.so.6
#6  0x0000000000000000 in ?? ()
(gdb) q
…

[grahamperrin]

I sought advice in Matrix, then ran a command:

ubuntu-bug qutebrowser

End result: Bug #2158488 “qutebrowser crashes when starting” : Bugs : qutebrowser package : Ubuntu