[Qemu-devel] SPARC kernel oops with logging

[Gabriel Southern]

Hi,

When I run qemu-system-sparc with -d in_asm,out_asm the Linux kernel
crashes when it tries to initialize the hard drive.  The same hard
drive image boots perfectly if I do not include the logging options.
The error messages that I receive are shown below.  I'm wondering if
the logging is causing some type of acknowledgment to be delayed and
this is causing a SCSI operation to timeout.  I've also attached log
of the complete console output in case anyone would find it useful.
If anyone has ideas about the cause or a possible solution please let
me know.

Thanks,

Gabriel

--------------------------------
Begin: Loading essential drivers... ...
SCSI subsystem initialized
esp0: IRQ 36 SCSI ID 7 Clk 40MHz CCYC=25000 CCF=8 TOut 167 NCR53C9XF(espfast)
scsi0 : Sparc ESP100A-FAST
Unable to handle kernel paging request at virtual address fe62f000
tsk->{mm,active_mm}->context = 0000007f
tsk->{mm,active_mm}->pgd = fc014400
              \|/ ____ \|/
              "@'/ ,. \`@"
              /_| \__/ |_\
                 \__U_/
modprobe(771): Oops [#1]
PSR: 04000fc7 PC: fe62f000 NPC: fe62f004 Y: fffffffc    Not tainted
PC: <__scsi_device_lookup_by_target+0x8/0x40 [scsi_mod]>
%G: ffffffff 04000fe0  00000000 044000e0  f0115c18 49ff53a9  f3274000 00000000
%O: f3249400 00000000  f3275a20 f3249484  f3249484 0000000c  f3275980 fe62f204
RPC: <scsi_device_lookup_by_target+0x44/0x74 [scsi_mod]>
%L: 040000e0 fe6362e8  fe6363cc 00000004  00000008 00000000  00000000 0000000a
%I: f3249400 00000000  00000000 00000000  00000000 f9828000  f32759e8 fe635528
Caller[fe635528]: scsi_probe_and_add_lun+0x40/0x9f4 [scsi_mod]
Caller[fe63641c]: __scsi_scan_target+0xa8/0x5a8 [scsi_mod]
Caller[fe63696c]: scsi_scan_channel+0x50/0x74 [scsi_mod]
Caller[fe636a1c]: scsi_scan_host_selected+0x8c/0xd8 [scsi_mod]
Caller[fe61ec80]: esp_sbus_probe+0x9f4/0xae8 [esp]
Caller[f001ba48]: of_device_probe+0x58/0x74
Caller[f01176b4]: driver_probe_device+0x60/0xb8
Caller[f0117814]: __driver_attach+0x70/0xc4
Caller[f0116f9c]: bus_for_each_dev+0x40/0x74
Caller[f0116bec]: bus_add_driver+0x6c/0x134
Caller[f004c86c]: sys_init_module+0x1610/0x1778
Caller[f0011634]: syscall_is_too_hard+0x3c/0x40
Caller[000133b4]: 0x133bc

sparc_qemu_crash.log
Description: Binary data