Re: [Qemu-devel] [Bug 671831] Re: Sparc guest assert error

[Stefan Hajnoczi <stefanha@gmail.com>]

Thanks for providing the kernel and initrd.  Unfortunately I wasn't
able to get them far enough to trigger the assert.  More on that at
the bottom of this message but in the meantime I looked over the
relevant commits and spotted an issue with the assert.

Please try this branch:
http://repo.or.cz/w/qemu/stefanha.git/shortlog/refs/heads/scsi_assert_moved

That branch contains a small code change that moves the assert later
into the read code because we're doing the assert too early.
Hopefully this fixes the issue for you.

Regarding the kernel and initrd, I'm unable to get it far enough to
fsck, which is where you hit
the assertion.  Either kernel parameters need to be set or the image depends on
a root filesystem (which I don't have).

$ sparc-softmmu/qemu-system-sparc -m 128 -hda test.raw -kernel
~/sparc-images/nigel/vmlinuz -initrd ~/sparc-images/nigel/initrd.img
-nographic

Configuration device id QEMU version 1 machine id 32
CPUs: 1 x FMI,MB86904
UUID: 00000000-0000-0000-0000-000000000000
Welcome to OpenBIOS v1.0 built on Aug 26 2010 17:52
  Type 'help' for detailed information
[sparc] Kernel already loaded
switching to new context:
PROMLIB: obio_ranges 1
bootmem_init: Scan sp_banks,  init_bootmem(spfn[20b],bpfn[20b],mlpfn[7f18])
free_bootmem: base[0] size[7f18000]
reserve_bootmem: base[800000] size[244000]
reserve_bootmem: base[0] size[20b000]
reserve_bootmem: base[20b000] size[fe4]
Booting Linux...
mem_init: Calling free_all_bootmem().
PROMLIB: Sun Boot Prom Version 3 Revision 2
Linux version 2.4.27-4-sparc32 (pbuilder@sparc) (gcc version 3.3.5
(Debian 1:3.3.5-13)) #1 Tue Mar 4 08:22:06 UTC 2008
ARCH: SUN4M
TYPE: SPARCstation 5
Ethernet address: 52:54:0:12:34:56
Boot time fixup v1.6. 4/Mar/98 Jakub Jelinek (jj@ultra.linux.cz).
Patching kernel for srmmu[Fujitsu TurboSparc]/iommu
On node 0 totalpages: 31432
zone(0): 32536 pages.
zone(1): 0 pages.
zone(2): 0 pages.
Found CPU 0 <node=ffd73e14,mid=0>
Found 1 CPU prom device tree node(s).
Power off control detected.
Kernel command line:
Calibrating delay loop... 222.82 BogoMIPS
Memory: 122120k available (1436k kernel code, 220k data, 128k init, 0k
highmem) [f0000000,07f18000]
Dentry cache hash table entries: 16384 (order: 5, 131072 bytes)
Inode cache hash table entries: 8192 (order: 4, 65536 bytes)
Mount cache hash table entries: 512 (order: 0, 4096 bytes)
Buffer cache hash table entries: 4096 (order: 2, 16384 bytes)
Page-cache hash table entries: 32768 (order: 5, 131072 bytes)
POSIX conformance testing by UNIFIX
IOMMU: impl 0 vers 5 page table at f05c0000 of size 262144 bytes
sbus0: Clock 21.1250 MHz
dma0: Revision 2
dma1: Revision 2
Sparc Zilog8530 serial driver version 1.68.2.2
Sun Mouse-Systems mouse driver version 1.00
tty00 at 0xffeab004 (irq = 44) is a Zilog8530
tty01 at 0xffeab000 (irq = 44) is a Zilog8530
tty02 at 0xffeac004 (irq = 44) is a Zilog8530
tty03 at 0xffeac000 (irq = 44) is a Zilog8530
keyboard: not present
Console: ttyS0 (Zilog8530)
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
ioremap: done with statics, switching to malloc
apc: power management initialized
Starting kswapd
VFS: Disk quotas vdquot_6.5.1
devfs: v1.12c (20020818) Richard Gooch (rgooch@atnf.csiro.au)
devfs: boot_options: 0x0
pty: 256 Unix98 ptys configured
Floppy drive(s): fd0 is 1.44M
reset set in interrupt, calling f00d3fb8
floppy0: no floppy controllers found
RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
Initializing Cryptographic API
NET4: Linux TCP/IP 1.0 for NET4.0
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 8192 bind 16384)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
RAMDISK: cramfs filesystem found at block 0
RAMDISK: Loading 2320 blocks [1 disk] into ram disk... done.
Freeing initrd memory: 2320k freed
VFS: Mounted root (cramfs filesystem).
mount[8]: Unimplemented SPARC system call 188
cat[9]: Unimplemented SPARC system call 188
mount[10]: Unimplemented SPARC system call 188
linuxrc[7]: Unimplemented SPARC system call 188
Freeing unused kernel memory: 128k freed
initrd-tools: 0.1.84.2
umount[11]: Unimplemented SPARC system call 188
cat[12]: Unimplemented SPARC system call 188
SCSI subsystem driver Revision: 1.00
esp0: IRQ 36 SCSI ID 7 Clk 40MHz CCYC=25000 CCF=8 TOut 167 NCR53C9XF(espfast)
ESP: Total of 1 ESP hosts found, 1 actually in use.
scsi0 : Sparc ESP100A-FAST
  Vendor: QEMU      Model: QEMU HARDDISK     Rev: 0.13
  Type:   Direct-Access                      ANSI SCSI revision: 05
  Vendor: QEMU      Model: QEMU CD-ROM       Rev: 0.13
  Type:   CD-ROM                             ANSI SCSI revision: 05
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
SCSI device sda: 20971520 512-byte hdwr sectors (10737 MB)
Partition check:
 /dev/scsi/host0/bus0/target0/lun0: p1 p3
Journalled Block Device driver loaded
pivot_root: No such file or directory
/sbin/init: 432: cannot open dev/console: No such file
Kernel panic: Attempted to kill init!
 Press L1-A to return to the boot prom

Stefan