[Qemu-devel] sparc32: kernel crash while writing to disk

[Qemu-devel] sparc32: kernel crash while writing to disk

[Aurelien Jarno]

Hi,

I have successfully installed a Debian instable on an emulated
SparcStation 5 by QEMU. Globally it works correctly, but I have
experienced a few kernel crashes, due to a problem with the ESP
controller. It seems to occur while writing a high volume of data to
disk, although that not always crash the kernel. Note that I am using
the CVS version of QEMU.

You will find the kernel log below. Does somebody have an idea? I don't
know how to debug such a thing, but I can make some tests if needed.

Thanks,
Aurelien


esp0: !BSERV after data, probably to msgout
esp0: !BSERV after data, probably to msgout
esp0: Aborting command
esp0: dumping state
esp0: dma -- cond_reg<a4000211> addr<f077d000>
esp0: SW [sreg<00> sstep<04> ireg<18>]
esp0: HW reread [sreg<83> sstep<00> ireg<10>]
esp0: current command [tgt<00> lun<00> pphase<DATAOUT> cphase<DATAOUT>]
esp0: disconnected 
esp0: Aborting command
esp0: dumping state
esp0: dma -- cond_reg<a4000210> addr<f077d000>
esp0: SW [sreg<00> sstep<04> ireg<18>]
esp0: HW reread [sreg<03> sstep<00> ireg<10>]
esp0: current command [tgt<00> lun<00> pphase<UNISSUED> cphase<UNISSUED>]
esp0: disconnected 
esp0: Resetting scsi bus
esp0: SCSI bus reset interrupt
Unable to handle kernel NULL pointer dereference
tsk->{mm,active_mm}->context = 00000023
tsk->{mm,active_mm}->pgd = fc019400
              \|/ ____ \|/
              "@'/ ,. \`@"
              /_| \__/ |_\
                 \__U_/
klogd(2895): Oops [#1]
PSR: 04400fc7 PC: fe61f618 NPC: fe61f61c Y: 00000000    Not tainted
PC: <esp_do_data_finale+0x36c/0x3b8 [esp]>
%G: 00000000 ffffffff  00000014 fd01a000  00000000 00000040  f1a82000 00000001
%O: fe620c00 00000000  00000000 00000000  00000000 fff00000  f1a83b38 fe61f300
RPC: <esp_do_data_finale+0x54/0x3b8 [esp]>
%L: f38f98a0 00000000  00000000 f01f7500  00000000 00000000  f390c000 0000000c
%I: f3904a84 000c0000  00000001 00000000  00000000 0eebb3c0  f1a83ba0 fe61ee28
Caller[fe61ee28]: esp_work_bus+0x5c/0x6c [esp]
Caller[fe61fd3c]: esp_intr+0x1d8/0x310 [esp]
Caller[f0013154]: handler_irq+0x8c/0xd4
Caller[f0010bd0]: patch_handler_irq+0x0/0x24
Caller[f0190eb4]: here+0x10/0x90
Caller[f002fc08]: do_syslog+0x110/0x3e8
Caller[f0069900]: vfs_read+0xa0/0x15c
Caller[f0069e28]: sys_read+0x30/0x64
Caller[f001162c]: syscall_is_too_hard+0x34/0x40
Caller[000119b0]: 0x119b0
Instruction DUMP: c2242118  8400a014  c4242114 <c200a010> c2242110  c200a00c  c224210c  c20e203a  82086007 
Kernel panic - not syncing: Aiee, killing interrupt handler!
 <0>Press Stop-A (L1-A) to return to the boot prom

-- 
  .''`.  Aurelien Jarno	            | GPG: 1024D/F1BCDB73
 : :' :  Debian developer           | Electrical Engineer
 `. `'   aurel32@debian.org         | aurelien@aurel32.net
   `-    people.debian.org/~aurel32 | www.aurel32.net