Package: libwebkit2gtk-4.1-0 Followup-For: Bug #1012548 X-Debbugs-Cc: [email protected]
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
