Bug#1033644: libwebkit2gtk-4.1-0: WebKitWebProcess constantly segfaulting

[Karo Gyoker]

Package: libwebkit2gtk-4.1-0
Version: 2.40.0-3
Severity: important
X-Debbugs-Cc: karogyoker2+debbug at gmail.com

Dear Maintainer,

If I try to open any page in epiphany-browser, nothing happens. The CPU is at 100%.
I can see it in dmesg that WebKitWebProcess is constantly segfaulting.

[14886.202609] WebKitWebProces[26945]: segfault at 48 ip b59e2128 sp bff5b889 error 6 in libwebkit2gtk-4.1.so.0.8.1[b3681000+2e85000] likely on CPU 0 (core 0, socket 0)
[14886.202671] Code: 00 00 00 c7 46 20 00 00 00 00 c7 46 24 00 00 00 00 c7 46 28 00 00 00 00 c7 46 2c 00 00 00 00 c4 46 34 00 d9 5e 44 d9 e8 d9 e0 <d9> 56 48 d9 5e 4c 8b 17 89 56 50 52 e8 37 9b 08 00 8b 57 04 89 56

It is happening since I have ran a dist-upgrade on bookworm.
If I recall correctly, after soft freeze and before hard feeze, it worked fine. I don't remember which version was that.

I cannot attach gdb as the pid is changing in every second.

cat /proc/cpuinfo
processor	: 0
vendor_id	: AuthenticAMD
cpu family	: 6
model		: 10
model name	: AMD Athlon(tm)
stepping	: 0
cpu MHz		: 1143.879
cache size	: 512 KB
physical id	: 0
siblings	: 1
core id		: 0
cpu cores	: 1
apicid		: 0
initial apicid	: 0
fdiv_bug	: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 1
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow cpuid 3dnowprefetch vmmcall
bugs		: fxsave_leak sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass
bogomips	: 2287.75
clflush size	: 32
cache_alignment	: 32
address sizes	: 34 bits physical, 32 bits virtual
power management: ts


-- System Information:
Debian Release: 12.0
  APT prefers testing-security
  APT policy: (500, 'testing-security'), (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 6.1.0-6-686-pae (SMP w/1 CPU thread; PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages libwebkit2gtk-4.1-0 depends on:
ii  bubblewrap                      0.8.0-2
ii  gstreamer1.0-plugins-base       1.22.0-3
ii  gstreamer1.0-plugins-good       1.22.0-5
ii  libatk1.0-0                     2.46.0-5
ii  libavif15                       0.11.1-1
ii  libc6                           2.36-8
ii  libcairo2                       1.16.0-7
ii  libdrm2                         2.4.114-1+b1
ii  libenchant-2-2                  2.3.3-2
ii  libepoxy0                       1.5.10-1
ii  libfontconfig1                  2.14.1-4
ii  libfreetype6                    2.12.1+dfsg-4
ii  libgbm1                         22.3.6-1+deb12u1
ii  libgcc-s1                       12.2.0-14
ii  libgcrypt20                     1.10.1-3
ii  libgdk-pixbuf-2.0-0             2.42.10+dfsg-1+b1
ii  libglib2.0-0                    2.74.6-1
ii  libgstreamer-gl1.0-0            1.22.0-3
ii  libgstreamer-plugins-bad1.0-0   1.22.0-4
ii  libgstreamer-plugins-base1.0-0  1.22.0-3
ii  libgstreamer1.0-0               1.22.0-2
ii  libgtk-3-0                      3.24.37-2
ii  libharfbuzz-icu0                6.0.0+dfsg-3
ii  libharfbuzz0b                   6.0.0+dfsg-3
ii  libhyphen0                      2.8.8-7
ii  libicu72                        72.1-3
ii  libjavascriptcoregtk-4.1-0      2.40.0-3
ii  libjpeg62-turbo                 1:2.1.5-2
ii  liblcms2-2                      2.14-2
ii  libmanette-0.2-0                0.2.6-3+b1
ii  libopenjp2-7                    2.5.0-1+b1
ii  libpango-1.0-0                  1.50.12+ds-1
ii  libpng16-16                     1.6.39-2
ii  libseccomp2                     2.5.4-1+b3
ii  libsecret-1-0                   0.20.5-3
ii  libsoup-3.0-0                   3.2.2-2
ii  libsqlite3-0                    3.40.1-2
ii  libstdc++6                      12.2.0-14
ii  libsystemd0                     252.6-1
ii  libtasn1-6                      4.19.0-2
ii  libwayland-client0              1.21.0-1
ii  libwayland-egl1                 1.21.0-1
ii  libwayland-server0              1.21.0-1
ii  libwebp7                        1.2.4-0.1
ii  libwebpdemux2                   1.2.4-0.1
ii  libwoff1                        1.0.2-2
ii  libwpe-1.0-1                    1.14.0-1
ii  libwpebackend-fdo-1.0-1         1.14.0-1
ii  libx11-6                        2:1.8.4-2
ii  libxcomposite1                  1:0.4.5-1
ii  libxdamage1                     1:1.1.6-1
ii  libxml2                         2.9.14+dfsg-1.1+b3
ii  libxslt1.1                      1.1.35-1
ii  xdg-dbus-proxy                  0.1.4-3
ii  zlib1g                          1:1.2.13.dfsg-1

Versions of packages libwebkit2gtk-4.1-0 recommends:
ii  gstreamer1.0-gl           1.22.0-3
ii  gstreamer1.0-libav        1.22.0-2
ii  gstreamer1.0-plugins-bad  1.22.0-4
ii  libgl1-mesa-dri           22.3.6-1+deb12u1
ii  xdg-desktop-portal-gtk    1.14.1-1

Versions of packages libwebkit2gtk-4.1-0 suggests:
pn  gstreamer1.0-alsa  <none>

-- no debconf information