Date: Sun, 24 Dec 2017 09:40:41 -0700 From: Warner Losh <imp@bsdimp.com> To: Dimitry Andric <dimitry@andric.com> Cc: David Wolfskill <david@catwhisker.org>, current <current@freebsd.org> Subject: Re: Panic @ orm_identify+0x308 (kernel probes) after r327103 -> r327140 Message-ID: <CANCZdfoUeTtiM%2BvTHFiE%2BMY1OZQS11=052SxRgJdg3BRTHBO2g@mail.gmail.com> In-Reply-To: <FC1A3E5C-2B7E-42EF-BAE1-09DC96179F4B@andric.com> References: <20171224132710.GN1555@albert.catwhisker.org> <FC1A3E5C-2B7E-42EF-BAE1-09DC96179F4B@andric.com>
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On Sun, Dec 24, 2017 at 7:16 AM, Dimitry Andric <dimitry@andric.com> wrote: > On 24 Dec 2017, at 14:27, David Wolfskill <david@catwhisker.org> wrote: > > > > Had this on the laptop; fotunately, also got it on the build machine (as > > it's a lot easier to work with the serial console of the latter for > > this -- and it runs a GENERIC kernel): > ... > > Fatal trap 9: general protection fault while in kernel mode > > cpuid = 2; apic id = 02 > > instruction pointer = 0x20:0xffffffff81066968 > > stack pointer = 0x28:0xffffffff82286a90 > > frame pointer = 0x28:0xffffffff82286ad0 > > code segment = base 0x0, limit 0xfffff, type 0x1b > > = DPL 0, pres 1, long 1, def32 0, gran 1 > > processor eflags = interrupt enabled, resume, IOPL = 0 > > current process = 0 (swapper) > > [ thread pid 0 tid 100000 ] > > Stopped at orm_identify+0x308: movq (%r14),%rax > > db> bt > > Tracing pid 0 tid 100000 td 0xffffffff81e94340 > > orm_identify() at orm_identify+0x308/frame 0xffffffff82286ad0 > > bus_generic_probe() at bus_generic_probe+0x74/frame 0xffffffff82286b00 > > isa_probe_children() at isa_probe_children+0x19/frame 0xffffffff82286b50 > > mi_startup() at mi_startup+0x9c/frame 0xffffffff82286b70 > > btext() at btext+0x2c > > Since there is "isa" in the backtrace, I would consider r327120 ("Warn > when nonPNP ISA devices are attached in GENERIC that they are being > removed from GENERIC in 12") by Warner suspect... > > Specifically, this change: > https://svnweb.freebsd.org/base/head/sys/x86/isa/orm.c? > r1=327120&r2=327119&pathrev=327120 Yea, I just partially reverted it. It worked when I test booted it, but there must be something different in David's machine than mine that I hand't considered. Warner
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