Date: Wed, 30 Aug 2023 09:15:37 -0400 From: Mark Johnston <markj@freebsd.org> To: Cy Schubert <Cy.Schubert@cschubert.com> Cc: freebsd-current@freebsd.org Subject: Re: ZFS Page Derefrence Message-ID: <ZO9A-QbUEpW2Sf49@nuc> In-Reply-To: <20230830020835.A901AA9@slippy.cwsent.com> References: <20230830020835.A901AA9@slippy.cwsent.com>
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On Tue, Aug 29, 2023 at 07:08:35PM -0700, Cy Schubert wrote:
> Hi
>
> Just got the following panic on an and64 machine running poudriere building
> i386 packages.
>
> panic: vm_page_dequeue_deferred: page 0xfffffe000b222808 has unexpected
> queue state^M
> [...]
>
> uname reports,
>
> FreeBSD bob 15.0-CURRENT FreeBSD 15.0-CURRENT amd64 1500000 #1
> komquats-n265075-2e8edbc285cf: Tue Aug 29 03:51:59 PDT 2023
> root@cwsys:/export/obj/opt/src/git-src/amd64.amd64/sys/BREAK2 amd64
>
> My BREAK2 kernel removes devices I don't use and enables keystrokes to
> interrupt the system from the conosle (conserver). Local patches affect
> ipfilter only.
>
> Head of core.txt:
>
> __curthread () at /opt/src/git-src/sys/amd64/include/pcpu_aux.h:57
> 57 __asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (offsetof(struct
> pcpu
> ,
> (kgdb) #0 __curthread () at /opt/src/git-src/sys/amd64/include/pcpu_aux.h:5
> 7
> #1 doadump (textdump=textdump@entry=1)
> at /opt/src/git-src/sys/kern/kern_shutdown.c:405
> #2 0xffffffff806c1b30 in kern_reboot (howto=260)
> at /opt/src/git-src/sys/kern/kern_shutdown.c:526
> #3 0xffffffff806c202f in vpanic (
> fmt=0xffffffff80b5da55 "%s: page %p has unexpected queue state",
> ap=ap@entry=0xfffffe00bf55d770)
> at /opt/src/git-src/sys/kern/kern_shutdown.c:970
> #4 0xffffffff806c1dd3 in panic (fmt=<unavailable>)
> at /opt/src/git-src/sys/kern/kern_shutdown.c:894
> #5 0xffffffff809daab2 in vm_page_dequeue_deferred (m=<unavailable>,
> m@entry=0xfffffe000b222808) at /opt/src/git-src/sys/vm/vm_page.c:3790
> #6 0xffffffff809ddfeb in vm_page_free_prep (m=m@entry=0xfffffe000b222808)
> at /opt/src/git-src/sys/vm/vm_page.c:3928
Could you please print/x *m from this frame?
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