Created attachment 249950 [details] VirtualBox_FBSD-CUR_13_04_2024_19_24_39.png Sudden kernel panic Fatal double fault at world compilation.
Created attachment 249951 [details] VirtualBox_FBSD-CUR_13_04_2024_19_26_12.png
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Created attachment 249957 [details] VirtualBox_FBSD-CUR_13_04_2024_19_30_54.png
The stack pointer is very close to a page boundary, so this looks a bit like a stack overflow. There is not a lot of other useful detail. Is it reproducible? If so, I wonder if reverting commit 7a79d066976149349ecb90240d02eed0c4268737 fixes the problem.
(In reply to Mark Johnston from comment #8) Thank you for reply. It is not reproduceable fast and I don't have enough time for thorough continuous heavy, overloading testing (like compiling world). But on FBSD side, using fast servers, it is possible to run such burning, automated extended stress-test of example before release, including VMM just RAM and RAM + Swap configuration, paying precise attention to large scale testing like 128GB of RAM & 256GB of Swap, and 64 threads (-j 64) for 32 threads CPU, which easily could be achieved by compiling LLVM source code (and simultaneously in multiple jails), for e.g. I'll be waiting for new kernel commits in up-coming weeks.
> It is not reproduceable fast Is it reproducible at all? I am asking if you saw it more than once.
(In reply to Mark Johnston from comment #10) No, just once.
Any more occurrences of this panic?
(In reply to Gleb Smirnoff from comment #12) No.