Hi all, I was contacted by Chris who had the same problem. Since I didn't follow up on my problem he asked me if it was solved and indeed it was solved by Søren and the fix has been committed to CURRENT: http://lists.freebsd.org/pipermail/cvs-all/2006-September/188353.html
I'm hoping this gets MFC'ed in time for 6.2 My conversation with Søren is bellow: ---------- Forwarded message ---------- From: Joao Barros <[EMAIL PROTECTED]> Date: Sep 14, 2006 8:04 PM Subject: Re: Fwd: panic: integer divide fault on 6.1 To: Søren Schmidt <[EMAIL PROTECTED]> On 9/13/06, Joao Barros <[EMAIL PROTECTED]> wrote:
On 9/13/06, Søren Schmidt <[EMAIL PROTECTED]> wrote: > Joao Barros wrote: > > ---------- Forwarded message ---------- > > From: Sam Leffler <[EMAIL PROTECTED]> > > Date: Sep 10, 2006 5:16 PM > > Subject: Re: panic: integer divide fault on 6.1 > > To: Joao Barros <[EMAIL PROTECTED]> > > Cc: freebsd-current@freebsd.org, freebsd-stable@freebsd.org, Kris > > Kennaway <[EMAIL PROTECTED]> > > > > > > Joao Barros wrote: > >> On 9/9/06, Kris Kennaway <[EMAIL PROTECTED]> wrote: > >>> On Sat, Sep 09, 2006 at 09:02:35PM +0100, Joao Barros wrote: > >>> > On 9/9/06, Max Laier <[EMAIL PROTECTED]> wrote: > >>> > > > >>> > >Can you try to get a dump, trace, or at least figure out which > >>> function > >>> > >the IP is refering to? > >>> > > > >>> > > >>> > Well, the problem only occurs when I boot from the disk and the > >>> > installed kernel doesn't have debug support. > >>> > Does 'set dumpdev=' work from the boot loader? I tried some > >>> > combinations with no success. > >>> > >>> No. > >>> > >>> > I can try and install a 6-STABLE snapshot if there's no way of > >>> getting > >>> > the info needed. > >>> > >>> You can either try to install a new kernel with DDB support, or follow > >>> the "instruction pointer" method in the developers handbook chapter on > >>> kernel debugging. > >> > >> I copied a CURRENT kernel from a 200608 snapshot and the problem also > >> occurs thus I'm adding [EMAIL PROTECTED] > >> My current laptop doesn't have a serial port so I'm copying this by > >> hand: > >> > >> Fatal trap 18: integer divide fault while in kernel mode > >> cpuid = 0; apic id = 00 > >> instruction pointer = 0x20:0xc08a1fb7 > >> stack pointer = 0x28:0xc0c20b14 > >> frame pointer = 0x28:0xc0c20b9c > >> code segment = base 0x0, limit 0xfffff, type 0x1b > >> = DPL 0, pres 1, def32 1, gran 1 > >> processor eflags = interrupt enabled, resume, IOPL = 0 > >> current process = 0 (swapper) > >> [thread pid 0 tid 0 ] > >> Stopped at __qdivrem+0x3b: divl %ecx,%eax > >> > >> db> bt > >> Tracing pid 0 tid0 td 0xc0a0c818 > >> __qdivrem(37fdfa0,0,0,0,0,...) at __qdivrem+0x3b > >> __udivdi3(37fdfa0,0,0,0) at __udivdi3+0x16 > >> ata_raid_promise_read_meta(c37a5000,c09f4a80,1,8086,c37a5000,...) at > >> ata_raid_promise_read_meta+0x9b > >> ata_raid_read_metadata(c37a5000,c37a5000,c0c20c70,c06b58a4,c37a5000,...) > >> at ata_raid_metadata+0x2be > >> ata_raid_subdisk_attach(c37a5000) at ata_raid_subdisk_attach+0x33 > >> device_attach(c37a5000,c37a5180,c37a5000,c36885c0,0,...) at > >> device_attach+0x58 > >> device_probe_and_attach(c37a5200,c37a5200,c08ec9a9,0,c37a5180,...) at > >> bus_generic_attach+0x16 > >> ad_attach(c37a5200) at ad_attach+0x2c8 > >> device_attach(c37a5200,c095f2d0,c37a5200,0,c368d800,...) at > >> device_attach+0x58 > >> device_probe_and_attach(c37a5200) at device_probe_and_atach+0xe0 > >> bus_generic_attach(c3659080,c3659080,ffffffff,0,c37a5200,...) at > >> bus_generic_attach+0x16 > >> ata_identify(c3659080) at ata_identify+0x1c8 > >> ata_boot_attach(0xc0a11d80,0,c09212e7,47,...) at ata_boot_attach+0x3e > >> run_interrupt_drive_config_hooks(0,c1ec00,c1e000,0,c0451065,...) at > >> run_interrupt_drive_config_hooks+0x43 > >> mi_startup() at mi_startup+0x96 > >> begin() at begin+0x2c > >> > >> This board has a Promise SATA raid controller and it is disabled in > >> the BIOS. I even tried disabling it through a jumper but it still > >> stops. > >> > > > > In sys/dev/ata/ata-raid.h the PROMISE_LBA macro does an unchecked > > calculation that apparently can divide by zero. Soren would likely > > understand the root cause of this problem but until then you can patch > > the driver to workaround the problem. > > > > Sam > > > > > > Hi Søren, > > > > I don't know if you bumped into this thread but this should definitely > > be fixed. > > Do you want me to open a PR? > > > Hmm, the problem seems to be that the geometry thats gotten from the > disk has (all) zero's in it, which we cannot handle. > Its most likely because your BIOS put invalid or no current geometry > info in the disks parameters page. > > If you are up to a little debugging, you could try this patch: > > diff -u -r1.189.2.4 ata-disk.c > --- ata-disk.c 4 Apr 2006 16:07:42 -0000 1.189.2.4 > +++ ata-disk.c 13 Sep 2006 06:18:59 -0000 > @@ -97,7 +97,8 @@ > } > device_set_ivars(dev, adp); > > - if (atadev->param.atavalid & ATA_FLAG_54_58) { > + if ((atadev->param.atavalid & ATA_FLAG_54_58) && > + atadev->param.current_heads && atadev->param.current_sectors) { > adp->heads = atadev->param.current_heads; > adp->sectors = atadev->param.current_sectors; > adp->total_secs = (u_int32_t)atadev->param.current_size_1 | > > > -Søren > Sure, I'll test it when I get home later today and start building a kernel on another machine that's currently off. I'll give you feedback tomorrow. Thanks, -- Joao Barros
I'm happy to report that your patch did the trick. The machine happily boot a today's CURRENT+patch :) Tell me if you need to test something more. Thanks! -- Joao Barros _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"