On Tue, Jan 28, 2025 at 04:41:26AM +0100, Sebastian Reichel wrote: > Package: firefox > Version: 134.0.2-2 > Severity: important > X-Debbugs-Cc: Mike Hommey <gland...@debian.org>, Sebastian Reichel > <s...@debian.org> > > Hi, > > I see a lot of tab crashes with Debian's firefox binary on arm64 based > T14s Gen6 Snapdragon. Usually when starting firefox or opening a new tab > I am greeted with the tab crash reporter. After a few tries a page is > actually rendered, so its not 100% broken. But with 80% crashes it is > more or less unusable. The same setup on amd64 runs fine and the crashes > also happen in safe mode / without a profile. > > Apparently there is no firefox arm64 version in flathub, but I tried the > librewolf 134.0.2 fork from there and I haven't seen a single crash with > that. This suggests the crashes are somehow specific to the Debian > version. > > I used minidump-stackwalk as suggested by the firefox project to get > a stacktrace for a few of the dmp files generated by firefox and it > always seems to be due to SIGILL originating from locked_profiler_start > as in the following output from minidump-stackwalk.
The SIGILL is actually happening in libgcc_s.so.1, and the faulting instructions is autia1716. I'm not sure how much Firefox is at fault here. The "good" news, at least, is that I can reproduce in a VM on a mac. Mike
