Date: Sat, 09 Jan 2016 11:30:46 -0800 From: John Baldwin <jhb@freebsd.org> To: freebsd-current@freebsd.org, Cy Schubert <Cy.Schubert@komquats.com> Cc: Jeremie Le Hen <jlh@freebsd.org>, Adrian Chadd <adrian.chadd@gmail.com>, Ryan Stone <rysto32@gmail.com>, =?ISO-8859-1?Q?Jean=2DS=E9bastien_P=E9dron?= <dumbbell@freebsd.org>, "?Alan L. Cox" <alc@freebsd.org> Subject: Re: Panic from vesa_configure() Message-ID: <6763716.RJFa7H2OmF@ralph.baldwin.cx> In-Reply-To: <201601070947.u079lWFk066644@slippy.cwsent.com> References: <201601070947.u079lWFk066644@slippy.cwsent.com>
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On Thursday, January 07, 2016 01:47:32 AM Cy Schubert wrote: > In message <CAGSa5y0QiKV9SgJYJ_mz3SnJGNjieHSvYP8nLjt9eWXo4RU6ww@mail.gmail.c > om> > , Jeremie Le Hen writes: > > On Mon, Dec 21, 2015 at 12:57 AM, Adrian Chadd <adrian.chadd@gmail.com> wrote > > : > > > can you copy/paste the file:line that each of those stackframes represents? > > > > > > I may have an idea or two.. > > > > Sure here we go: > > > > (kgdb) list *vesa_configure+0x270 > > 0xffffffff80b25cd0 is in vesa_configure (/usr/src-svn/sys/dev/fb/vesa.c:827). > > > > (kgdb) list *vga_init+0x65 > > 0xffffffff80b286e5 is in vga_init (/usr/src-svn/sys/dev/fb/vga.c:1402). > > > > (kgdb) list *isavga_attach+0x92 > > 0xffffffff80b9afd2 is in isavga_attach (/usr/src-svn/sys/isa/vga_isa.c:224). > > Here is what I see. Only happens on real hardware (not VirtualBox VMs). > > uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0 > uart0: console (9600,n,8,1) > acpi_alloc_wakeup_handler: can't alloc wake memory This is probably related to the same cause. Both this and the x86 BIOS stuff need "low" memory (memory below 1MB). x86bios_alloc() uses contigmalloc() as does acpi_alloc_wakeup_handler(). Perhaps the recent changes to contigmalloc() affect this? In particular, try reverting r292469 to see if that fixes the issue. -- John Baldwin
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