Date: Fri, 9 Feb 2024 17:31:18 -0500 From: Mark Johnston <markj@freebsd.org> To: "Matthew L. Dailey" <Matthew.L.Dailey@dartmouth.edu> Cc: "freebsd-current@freebsd.org" <freebsd-current@freebsd.org> Subject: Re: FreeBSD panics possibly caused by nfs clients Message-ID: <ZcanttlCzNFvMM7S@nuc> In-Reply-To: <3ea6d241-b9cc-4294-aef8-ae1c6d9d8161@dartmouth.edu> References: <c5d44484-8660-4b8b-a379-79423cb208f6@dartmouth.edu> <ZcZNDtN1nNJmo8cS@nuc> <c9eca81a-9eff-4b17-9928-bee2c79cef8f@dartmouth.edu> <b3243928-4d66-4c5e-9745-254d57f1cc5e@dartmouth.edu> <ZcaWkUwMlBCZCUhg@nuc> <3ea6d241-b9cc-4294-aef8-ae1c6d9d8161@dartmouth.edu>
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On Fri, Feb 09, 2024 at 10:11:14PM +0000, Matthew L. Dailey wrote: > On 2/9/24 4:18 PM, Mark Johnston wrote: > > [You don't often get email from markj@freebsd.org. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] > > > > On Fri, Feb 09, 2024 at 06:23:08PM +0000, Matthew L. Dailey wrote: > >> I had my first kernel panic with a KASAN kernel after only 01:27. This > >> first panic was a "double fault," which isn't anything we've seen > >> previously - usually we've seen trap 9 or trap 12, but sometimes others. > >> Based on the backtrace, it definitely looks like KASAN caught something, > >> but I don't have the expertise to know if this points to anything > >> specific. From the backtrace, it looks like this might have originated > >> in ipfw code. > > > > A double fault is rather unexpected. I presume you're running > > releng/14.0? Is it at all possible to test with FreeBSD-CURRENT? > > This is just 14.0-RELEASE, updated to p4. Haven't played with CURRENT > before, but I'll give it a shot. > > > > > Did you add INVARIANTS etc. to the kernel configuration used here, or > > just KASAN? > > > > This just had KASAN. Are you suggesting that I only add INVARIANTS > (along with KASAN), or all the various debug bits: > options DDB > options INVARIANT_SUPPORT > options INVARIANTS > options QUEUE_MACRO_DEBUG_TRASH > options WITNESS > options WITNESS_SKIPSPIN Please try adding all of them.
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