Package: libwebkit2gtk-4.1-0 Followup-For: Bug #1012548 X-Debbugs-Cc: karogyoker2+deb...@gmail.com
Dear Maintainer, Based on the stack trace I've found the problematic line on GitHub. It is calling ldmxcsr in an inline asm block. It does something with Web Audio API. I checked the history for the file (wasn't much) and everything seemed fine. I tried a sample code from MDN[1][2]. It caused the same segfault. On the Win10 ISO download page Web Audio API is being used for browser fingerprinting, I guess. I wrote a little C++[3] program to test my mxcsr register. On my other PC it ran fine. On the Athlon XP it segfaulted for some values only. I found that the 7th bit and bits 17-32 are not working. Reading via stmxcsr works and gives back the default value 1 1111 1000 0000 (0x1f80). This CPU has been downclocked in BIOS to the lowest possible FSB, otherwise has been restarting occasionally. That's why its clockspeed is ~1150MHz instead of ~1950MHz. Next year it celebrates its 20th birthday. Case can be closed as hardware failure. Thank you for your kind help and support. [1]: https://developer.mozilla.org/en- US/docs/Web/API/Web_Audio_API/Using_Web_Audio_API [2]: https://codepen.io/Rumyra/pen/qyMzqN/ [3]: #include <cstdio> int main() { int shiftby = 0; // segfaults: 6, [16-31] int temp = 1 << shiftby; printf("%i", temp); for (int i = 0; i < 1000000; i++) { asm volatile("ldmxcsr %0" : : "m" (temp)); } int result; asm volatile("stmxcsr %0" : "=m" (result)); printf("%i", result); return 0; } -- System Information: Debian Release: bookworm/sid APT prefers testing-debug APT policy: (500, 'testing-debug'), (500, 'testing') Architecture: i386 (i686) Kernel: Linux 5.17.0-1-686-pae (SMP w/1 CPU thread; PREEMPT) Kernel taint flags: TAINT_WARN Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en 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 0.6.2-1 ii gstreamer1.0-plugins-base 1.20.2-2 ii gstreamer1.0-plugins-good 1.20.2-1 ii libatk1.0-0 2.38.0-1 ii libc6 2.33-7 ii libcairo2 1.16.0-5 ii libegl1 1.4.0-1 ii libenchant-2-2 2.3.2-1 ii libfontconfig1 2.13.1-4.4 ii libfreetype6 2.12.1+dfsg-2 ii libgcc-s1 12.1.0-2 ii libgcrypt20 1.10.1-2 ii libgdk-pixbuf-2.0-0 2.42.8+dfsg-1 ii libglib2.0-0 2.72.1-1 ii libglx0 1.4.0-1 ii libgstreamer-gl1.0-0 1.20.2-2 ii libgstreamer-plugins-base1.0-0 1.20.2-2 ii libgstreamer1.0-0 1.20.2-1 ii libgtk-3-0 3.24.34-1 ii libharfbuzz-icu0 2.7.4-1+b1 ii libharfbuzz0b 2.7.4-1+b1 ii libhyphen0 2.8.8-7 ii libicu71 71.1-3 ii libjavascriptcoregtk-4.1-0 2.36.3-1 ii libjpeg62-turbo 1:2.1.2-1 ii liblcms2-2 2.12~rc1-2 ii libmanette-0.2-0 0.2.6-3 ii libnotify4 0.7.12-1 ii libopengl0 1.4.0-1 ii libopenjp2-7 2.4.0-6 ii libpango-1.0-0 1.50.7+ds-1 ii libpng16-16 1.6.37-5 ii libseccomp2 2.5.4-1 ii libsecret-1-0 0.20.5-2 ii libsoup-3.0-0 3.0.6-1 ii libsqlite3-0 3.38.5-1 ii libstdc++6 12.1.0-2 ii libsystemd0 250.4-1 ii libtasn1-6 4.18.0-4 ii libwayland-client0 1.20.0-1 ii libwayland-egl1 1.20.0-1 ii libwayland-server0 1.20.0-1 ii libwebp7 1.2.2-2+b1 ii libwebpdemux2 1.2.2-2+b1 ii libwoff1 1.0.2-1+b1 ii libwpe-1.0-1 1.12.0-1 ii libwpebackend-fdo-1.0-1 1.12.0-1 ii libx11-6 2:1.7.5-1 ii libxcomposite1 1:0.4.5-1 ii libxdamage1 1:1.1.5-2 ii libxml2 2.9.14+dfsg-1 ii libxslt1.1 1.1.34-4 ii xdg-dbus-proxy 0.1.4-1 ii zlib1g 1:1.2.11.dfsg-4 Versions of packages libwebkit2gtk-4.1-0 recommends: ii gstreamer1.0-gl 1.20.2-2 ii gstreamer1.0-libav 1.20.2-1 ii gstreamer1.0-plugins-bad 1.20.2-1 ii libgl1-mesa-dri 22.0.5-1 ii xdg-desktop-portal-gtk 1.14.0-1 Versions of packages libwebkit2gtk-4.1-0 suggests: ii gstreamer1.0-alsa 1.20.2-2 -- no debconf information
