[Qemu-devel] [Bug 824650] Re: Latest GIT assert error in arp_table.c

[Bjoern Bornemann]

Hey Guys,

I have the same problem.
Installing the VM was pretty fine, no problems at all but when I try to start 
this VM, which is supposed to run a Mikrotik "RouterOS" it fails with the known 
error message. So far this error can only be reproduced by installing this 
special OS. All other OS like Windows XP and several Linux distributions etc 
work fine.

I also checked the "tcp_input.c" file in the qemu source directory for
the given line, which is supposed to be the patch. And it  was of course
allready within that file.

okay now to my specs:

Host:
     CPU: Intel Core2Duo
     RAM: 4GB
     Lenovo ThinkPad T61

     OS: Slackware 13.1
     kernel: 3.0
     qemu: 1.0

the pcap file is attached to this note. Allthough it is no very big 24
byte only


** Attachment added: "qemu-vlan0.pcap"
   
https://bugs.launchpad.net/qemu/+bug/824650/+attachment/2722230/+files/qemu-vlan0.pcap

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https://bugs.launchpad.net/bugs/824650

Title:
  Latest GIT assert error in arp_table.c

Status in QEMU:
  New

Bug description:
  The latest git version of qemu (commit
  8cc7c3952d4d0a681d8d4c3ac89a206a5bfd7f00) crashes after a few minutes.
  All was fine up to a few days ago.  This is wth both x86 and sparc
  emulation, on an x86_64 host.

  e.g. qemu-system-sparc -drive
  file=netbsd5.0.2-sparc,index=0,media=disk,cache=unsafe -m 256 -boot c
  -nographic -redir tcp:2232::22:

   qemu-system-sparc: slirp/arp_table.c:75: arp_table_search: Assertion
  `(ip_addr & (__extension__ ({ register unsigned int __v, __x = (~(0xf
  << 28)); if (__builtin_constant_p (__x)) __v = ((((__x) & 0xff000000)
  >> 24) | (((__x) & 0x00ff0000) >> 8) | (((__x) & 0x0000ff00) << 8) |
  (((__x) & 0x000000ff) << 24)); else __asm__ ("bswap %0" : "=r" (__v) :
  "0" (__x)); __v; }))) != 0' failed.

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