Date: Sun, 12 Jan 2025 16:25:13 -0800 From: bob prohaska <fbsd@www.zefox.net> To: Kyle Evans <kevans@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: [Bug 273566] stray characters contaminate serial console Message-ID: <Z4RdaRJp50814Ltr@www.zefox.net> In-Reply-To: <5e6620f9-ac6c-4a2d-8b9e-2cc1cafc17a4@FreeBSD.org> References: <Z4P67shxS9JxcrXB@www.zefox.net> <5e6620f9-ac6c-4a2d-8b9e-2cc1cafc17a4@FreeBSD.org>
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On Sun, Jan 12, 2025 at 02:04:24PM -0600, Kyle Evans wrote: > On 1/12/25 11:25, bob prohaska wrote: > > > > Just for fun I installed a GENERIC-KASAN kernel on a Pi4 running -current, > > but far as I can tell the problem doesn't exist on aarch64 or I don't know > > how to see it. The Pi4 is providing terminal service to a Pi2 running armv7, > > which since the KASAN kernel went on the Pi4 hasn't suffered a boot > > stoppage. Neither have I seen any console messages on the Pi4 suggesting > > something amiss. I'm guessing kasan simply generates warnings, but if so > > I've not recognized any. I'll keep watching, it would really help to know > > what sort of behavior I'm looking for. > > > > I tried to build a kasan kernel on a pi2 running armv7 but buildworld > > stopped with an unrecognized symbol. It's now building world/kernel with > > GENERIC as a sanity check, but the kasan man page suggests armv7 is > > unsupported. > > > > If in fact armv7 does support kasan then I'll keep trying. Unfortunately > > I have only one kasan-supporting host presently but have couple spare > > Pi2 v1.1 boxes that can run armv7 if it's relevant. > > > > arm64 and amd64 only today OK, so armv7 can't help. If arm64 GENERIC-KASAN does find something amiss will it show up on the serial console or /var/log/messages? Thanks for writing! bob prohaskahome | help
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