On Mon, Apr 16, 2012 at 06:15:32PM +0200, Rainer Hurling wrote: > On 16.04.2012 16:55 (UTC+1), Konstantin Belousov wrote: > >On Mon, Apr 16, 2012 at 07:35:23AM -0700, matt wrote: > >>On 04/16/12 01:57, O. Hartmann wrote: > >>>On 04/15/12 12:30, Conrad J. Sabatier wrote: > >>>>Today I'm suddenly unable to boot a newly built kernel without crashing > >>>>right near the end of the device probes, just before the system is > >>>>about to actually come up: > >>>> > >>>>Fatal trap 18: integer divide fault while in kernel mode > >>>> > >>>>Stopped at 0xffffffff803b2646 = g_label_ufs_taste_common+0x36 > >>>>divl 0x50(%rcx),%eax > >>>> > >>>>Backtrace lists this chain of calls: > >>>>g_label_ufs_taste_common > >>>>g_label_taste > >>>>g_new_provider_event > >>>>g_run_events > >>>>g_event_procbody > >>>>fork_exit > >>>>fork_trampoline > >>>> > >>>>Whether built with clang or gcc, CUSTOM config or GENERIC, same results > >>>>on rebooting. No idea why this suddenly started happening, haven't > >>>>changed anything at all in my setup. > >>>My recent kernel does the same on two "FreeBSD 10.0-CURRENT #1 r234309: > >>>Sun Apr 15 14:14:11 CEST 2012" boxes. Both boxes in common is they are > >>>attached to a Dell UltraSharp U2711 screen which does have a built-in > >>>USB/MMC hub. I realized that it was possible to log into my lab's box > >>>from remote when I'm not in the lab and that is usually coincidentally > >>>with a switched off screen. > >>>This morning I loged in from home, loged out and got to the office, > >>>switched on the screen - and reboot! I wasn't able to get the system > >>>running again, it always got stuck in a > >>> > >>>Fatal trap 18: integer divide fault while in kernel mode > >>> > >>>Unplugging the screen's USB hub makes the system booting again! > >>> > >>>Following is one of the last logged messages from the kernel, I don not > >>>know whether this is usefull looking for the problem. > >>> > >>>Regards, > >>>Oliver > >>> > >>>Apr 12 15:32:33 telesto kernel: hwpmc: > >>>SOFT/16/64/0x67<INT,USR,SYS,REA,WRI> TSC/1/64/0x20<REA> > >>>IAP/4/48/0x3ff<INT,USR,SYS,EDG,THR,REA,WRI,INV,QUA,PRC> > >>>IAF/3/48/0x61<INT,REA,WRI> UCP/8/48/0x3f8<EDG,THR,REA,WRI,INV,QUA,PRC> > >>>UCF/1/48/0x60<REA,WRI> > >>>Apr 12 15:32:33 telesto kernel: uhub1: 4 ports with 4 removable, self > >>>powered > >>>Apr 12 15:32:33 telesto kernel: uhub2: 4 ports with 4 removable, self > >>>powered > >>>Apr 12 15:32:33 telesto kernel: uhub3: 2 ports with 2 removable, self > >>>powered > >>>Apr 12 15:32:33 telesto kernel: uhub0: 2 ports with 2 removable, self > >>>powered > >>>Apr 12 15:32:33 telesto kernel: ugen3.2:<vendor 0x8087> at usbus3 > >>>Apr 12 15:32:33 telesto kernel: uhub4:<vendor 0x8087 product 0x0024, > >>>class 9/0, rev 2.00/0.00, addr 2> on usbus3 > >>>Apr 12 15:32:33 telesto kernel: ugen0.2:<vendor 0x8087> at usbus0 > >>>Apr 12 15:32:33 telesto kernel: uhub5:<vendor 0x8087 product 0x0024, > >>>class 9/0, rev 2.00/0.00, addr 2> on usbus0 > >>>Apr 12 15:32:33 telesto kernel: Root mount waiting for: usbus3 usbus0 > >>>Apr 12 15:32:33 telesto kernel: uhub5: 6 ports with 6 removable, self > >>>powered > >>>Apr 12 15:32:33 telesto kernel: uhub4: 8 ports with 8 removable, self > >>>powered > >>>Apr 12 15:32:33 telesto kernel: ugen3.3:<Cherry GmbH> at usbus3 > >>>Apr 12 15:32:33 telesto kernel: ukbd0:<Cherry GmbH wired keyboard, > >>>class 0/0, rev 2.00/1.11, addr 3> on usbus3 > >>>Apr 12 15:32:33 telesto kernel: kbd2 at ukbd0 > >>>Apr 12 15:32:33 telesto kernel: uhid0:<Cherry GmbH wired keyboard, > >>>class 0/0, rev 2.00/1.11, addr 3> on usbus3 > >>>Apr 12 15:32:33 telesto kernel: Root mount waiting for: usbus3 > >>>Apr 12 15:32:33 telesto kernel: ugen3.4:<vendor 0x0424> at usbus3 > >>>Apr 12 15:32:33 telesto kernel: uhub6:<vendor 0x0424 product 0x2514, > >>>class 9/0, rev 2.00/0.00, addr 4> on usbus3 > >>>Apr 12 15:32:33 telesto kernel: Root mount waiting for: usbus3 > >>>Apr 12 15:32:33 telesto kernel: uhub6: 3 ports with 2 removable, self > >>>powered > >>>Apr 12 15:32:33 telesto kernel: ugen3.5:<vendor 0x0424> at usbus3 > >>>Apr 12 15:32:33 telesto kernel: uhub7:<vendor 0x0424 product 0x2640, > >>>class 9/0, rev 2.00/0.00, addr 5> on usbus3 > >>>Apr 12 15:32:33 telesto kernel: Root mount waiting for: usbus3 > >>>Apr 12 15:32:33 telesto kernel: uhub7: 3 ports with 2 removable, self > >>>powered > >>>Apr 12 15:32:33 telesto kernel: Root mount waiting for: usbus3 > >>>Apr 12 15:32:33 telesto kernel: ugen3.6:<Generic> at usbus3 > >>>Apr 12 15:32:33 telesto kernel: umass0:<Generic Ultra Fast Media > >>>Reader, class 0/0, rev 2.00/1.91, addr 6> on usbus3 > >>>Apr 12 15:32:33 telesto kernel: Root mount waiting for: usbus3 > >>>Apr 12 15:32:33 telesto kernel: (probe0:umass-sim0:0:0:0): TEST UNIT > >>>READY. CDB: 0 0 0 0 0 0 > >>>Apr 12 15:32:33 telesto kernel: (probe0:umass-sim0:0:0:0): CAM status: > >>>SCSI Status Error > >>>Apr 12 15:32:33 telesto kernel: (probe0:umass-sim0:0:0:0): SCSI status: > >>>Check Condition > >>>Apr 12 15:32:33 telesto kernel: (probe0:umass-sim0:0:0:0): SCSI sense: > >>>NOT READY asc:3a,0 (Medium not present) > >>>Apr 12 15:32:33 telesto kernel: da0 at umass-sim0 bus 0 scbus14 target 0 > >>>lun 0 > >>>Apr 12 15:32:33 telesto kernel: da0:<Generic Ultra HS-SD/MMC 1.91> > >>>Removable Direct Access SCSI-0 device > >>>Apr 12 15:32:33 telesto kernel: da0: 40.000MB/s transfers > >>>Apr 12 15:32:33 telesto kernel: da0: Attempt to query device size > >>>failed: NOT READY, Medium not present > >>>Apr 12 15:32:33 telesto kernel: ugen3.7:<Logitech> at usbus3 > >>>Apr 12 15:32:33 telesto kernel: ums0:<Logitech USB Laser Mouse, class > >>>0/0, rev 2.00/56.01, addr 7> on usbus3 > >>>Apr 12 15:32:33 telesto kernel: ums0: 8 buttons and [XYZT] coordinates > >>>ID=0 > >>>Apr 12 15:32:33 telesto kernel: Trying to mount root from > >>>ufs:/dev/gpt/root [rw]... > >>>Apr 12 15:32:33 telesto kernel: nvidia0:<GeForce GTX 570> on vgapci0 > >>>Apr 12 15:32:33 telesto kernel: vgapci0: child nvidia0 requested > >>>pci_enable_io > >>>Apr 12 15:32:33 telesto kernel: vgapci0: child nvidia0 requested > >>>pci_enable_io > >>>Apr 12 15:32:33 telesto kernel: vboxdrv: fAsync=0 offMin=0x2d8 > >>>offMax=0x603c > >>>Apr 12 15:32:33 telesto kernel: module_register: module ng_ether already > >>>exists! > >>>Apr 12 15:32:33 telesto kernel: Module ng_ether failed to register: 17 > >>> > >>Disconnect "Generic Ultra HS-SD/MMC" device which is presenting > >>da0...same problem here. System will boot if da0 is either not present > >>or has media (I think). In my case it was a different card reader that > >>had no cards in it, which seem to be similar to your case. > >> > >>My guess is that this problem is related to recent changes in da, but I > >>couldn't pinpoint in the diff what's going wrong in a quick look. > > > >So did you tried to revert r234177 and/or r233963 ? > > I just updated my system to r234342, only downgraded > /usr/src/sys/cam/scsi/scsi_da.c to r233746, and now the system is > booting again. So obviously there is something wrong with the newest > patch to scsi_da.c. It is too broad, try to revert exactly one patch and see whether it works.
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