On Sun, Jun 30, 2024 at 12:52 PM Chris Adams <li...@cmadams.net> wrote: > > After some recent updates, I seem to get an illegal instruction the > first time or two I start Chrome/Chromium after boot. If I close it and > reopen it a time or two, it'll work like normal from that point on, > until I reboot again. It's the weirdest thing, I can't think of > anything I've ever seen act like this before. > > Not sure if this is a problem with Chrome/Chromium, some library > dependency, or even the kernel. It's happening for me on both Fedora 39 > and 40 (both x86_64). dmesg shows: > > [ 127.676343] traps: chromium-browse[3675] trap int3 ip:55bcd5b053c6 > sp:7fff6061e350 error:0 in chromium-browser[55bccfde1000+d8af000]
It's hard to say whether a problem exists based on the information provided. In the case of crypto libraries, a common strategy at startup is to perform cpu feature testing by trying an instruction in an ISA (like SSE4.2, SecureKey or AVX2), and trapping a potential cpu fault. If the fault is raised, the ISA is not available. Then the library sets up its function calls based on availability. Video drivers probably perform similar probes at startup. So to investigate further, we probably need to see a disassembly around the offending code, the name of the offending function, and the callstack. Jeff -- _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
