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

[Nigel Horne]

It's been fixed now, thanks.  There seems to be no way to close this
bug, but you can assume, now, that it is closed.

Thanks for your help in tracking it down and fixing it quickly.

** Changed in: qemu
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/671831

Title:
  Sparc guest assert error

Status in QEMU:
  Fix Released

Bug description:
  The latest version in git (d33ea50a958b2e050d2b28e5f17e3b55e91c6d74) crashes 
with an assert error when booting a Sparc/Linux guest.

The last time I tried it (about a week ago) it worked fine.  Yesterdai, I did a 
git pull, make clean, reran configure and compiled.

Host OS: Debian Linux/x86_64 5.0
C Compiler: 4.4.5
Guest OS: Linux/Sparc (2.4)
Command Line: qemu-system-sparc -hda ~njh/qemu/sparc/debian.img -nographic -m 
128
Build Configure: ./configure --enable-linux-aio --enable-io-thread --enable-kvm
GIT commit: d33ea50a958b2e050d2b28e5f17e3b55e91c6d74

Output:

Adding Swap: 122532k swap-space (priority -1)
.
Will now check root file system:fsck 1.40-WIP (14-Nov-2006)
[/sbin/fsck.ext3 (1) -- /] fsck.ext3 -a -C0 /dev/sda2 
qemu-system-sparc: /home/njh/src/qemu/hw/scsi-disk.c:201: scsi_read_data: 
Assertion `r->req.aiocb == ((void *)0)' failed.


It crashes in the same place every time.

(gdb) thread apply all bt:

Thread 3 (Thread 17643):
#0  0x00007f4db21bc8d3 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00000000004d02c4 in main_loop_wait (nonblocking=<value optimized out>)
    at /home/njh/src/qemu/vl.c:1246
#2  0x00000000004d0e57 in main_loop (argc=<value optimized out>, 
    argv=<value optimized out>, envp=<value optimized out>)
    at /home/njh/src/qemu/vl.c:1309
#3  main (argc=<value optimized out>, argv=<value optimized out>, 
    envp=<value optimized out>) at /home/njh/src/qemu/vl.c:2999

Thread 2 (Thread 17645):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:211
#1  0x000000000042450b in cond_timedwait (unused=<value optimized out>)
    at posix-aio-compat.c:104
#2  aio_thread (unused=<value optimized out>) at posix-aio-compat.c:325
#3  0x00007f4db3b818ba in start_thread (arg=<value optimized out>)
    at pthread_create.c:300
#4  0x00007f4db21c302d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()
Current language:  auto
The current source language is "auto; currently asm".

Thread 1 (Thread 17644):
#0  0x00007f4db2126165 in *__GI_raise (sig=<value optimized out>)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1  0x00007f4db2128f70 in *__GI_abort () at abort.c:92
#2  0x00007f4db211f2b1 in *__GI___assert_fail (
    assertion=0x52690a "r->req.aiocb == ((void *)0)", 
    file=<value optimized out>, line=201, function=0x527480 "scsi_read_data")
    at assert.c:81
#3  0x000000000044f363 in scsi_read_data (d=<value optimized out>, tag=0)
    at /home/njh/src/qemu/hw/scsi-disk.c:201
#4  0x00000000004ebd6c in esp_do_dma (s=0x20679d0)
    at /home/njh/src/qemu/hw/esp.c:377
#5  0x00000000004ec781 in handle_ti (opaque=0x20679d0, 
    addr=<value optimized out>, val=<value optimized out>)
    at /home/njh/src/qemu/hw/esp.c:443
#6  esp_mem_writeb (opaque=0x20679d0, addr=<value optimized out>, 
    val=<value optimized out>) at /home/njh/src/qemu/hw/esp.c:595
#7  0x0000000041b2d971 in ?? ()
#8  0xffffffffffffffff in ?? ()
#9  0x00000000031ad000 in ?? ()
#10 0x0000000301adfa20 in ?? ()
#11 0x0000100000000007 in ?? ()
#12 0x00007f4daf80e8a0 in ?? ()
#13 0x0000000000000001 in ?? ()
#14 0x0000000000000000 in ?? ()