On Mon, 03 Aug 2020 11:30:05 -0600, jim.cro...@gmail.com said: > I notice this excludes USB keyboard. > > does this mean it doesnt work early enough to be useful for early panics etc?
Very early panics and hangs are always a royal pain to deal with. There's no really good way to deal with it, because let's face it - if the operating system hasn't gotten its act together yet, it's going to have a hard time talking to you unless you can run it in a virtual machine or similar that has the tooling to allow you to usefully explore the memory entrails. > what does it mean for a panic right after starting 2nd CPUs ? > [ 0.416908] kthreadd invoked oom-killer: > gfp_mask=0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GF > gfp_mask=0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), order=0, > oom_score_adj=0 > [ 0.417551] CPU: 0 PID: 2 Comm: kthreadd Not tainted > 5.8.0-rc7-00023-gede6954dc460-dirty #101 > [ 0.418541] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS > 1.13.0-2.fc32 04/01/2014 Hitting the OOM killer on PID 2 in QEMU sounds suspiciously like you started QEMU and specified an insanely small memory space for the image.
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