Re: [Qemu-devel] [Bug 739785] Re: qemu-i386 user mode can't fork (bash: fork: Invalid argument)

[Justin Shafer <739785@bugs.launchpad.net>]

../qemu-0.14.0/i386-linux-user/qemu-i386 -L ./gnemul/qemu-i386 i386/ls -l
dummyfile

0.14.0??? I tried the latest qemu and it worked.. I forget the version..
1.XX something? I was able to run wine. It could also be your ld.so in
gnemul?


On Wed, Jun 15, 2016 at 7:41 AM, T. Huth <739785@bugs.launchpad.net>
wrote:

> ** Changed in: qemu
>        Status: Fix Committed => Fix Released
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/739785
>
> Title:
>   qemu-i386 user mode can't fork (bash: fork: Invalid argument)
>
> Status in QEMU:
>   Fix Released
> Status in qemu package in Debian:
>   Fix Released
>
> Bug description:
>   Good time of day everybody,
>
>   I have been trying to make usermode qemu on ARM with plugapps
>   (archlinux) with archlinux i386 chroot to work.
>
>   1. I installed arch linux in a virtuabox and created a chroot for it
> with mkarchroot. Transferred it to my pogo plug into /i386/
>   2. I comiled qemu-i386 static and put it into /i386/usr/bin/
>   ./configure --static --disable-blobs --disable-system
> --target-list=i386-linux-user
>   make
>
>   3. I also compiled linux kernel 2.6.38 with CONFIG_BINFMT_MISC=y and
> installed it.
>   uname -a
>   Linux Plugbox 2.6.38 #4 PREEMPT Fri Mar 18 22:19:10 CDT 2011 armv5tel
> Feroceon 88FR131 rev 1 (v5l) Marvell SheevaPlug Reference Board GNU/Linux
>
>   4. Added the following options into /etc/rc.local
>   /sbin/modprobe binfmt_misc
>   /bin/mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc
>   echo
> ':qemu-i386:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x03\x00:\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfb\xff\xff\xff:/usr/bin/qemu-i386:'
> >/proc/sys/fs/binfmt_misc/register
>
>   5. Also copied ld-linux.so.3 (actually ld-2.13.so because ld-
>   linux.so.3 is a link to that file) from /lib/ to /i386/lib/
>
>   6.Now i chroot into /i386 and I get this:
>   [root@Plugbox i386]# chroot .
>   [II aI hnve ao n@P /]# pacman -Suy
>   bash: fork: Invalid argument
>
>   7.I also downloaded linux-user-test-0.3 from qemu website and ran the
> test:
>   [root@Plugbox linux-user-test-0.3]# make
>   ./qemu-linux-user.sh
>   [qemu-i386]
>   ../qemu-0.14.0/i386-linux-user/qemu-i386 -L ./gnemul/qemu-i386 i386/ls
> -l dummyfile
>   BUG IN DYNAMIC LINKER ld.so: dl-version.c: 210: _dl_check_map_versions:
> Assertion `needed != ((void *)0)' failed!
>   make: *** [test] Error 127
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/qemu/+bug/739785/+subscriptions
>


-- 
Justin Shafer
Onsite Dental Systems
7704 Sagebrush Ct. S.
North Richland Hills, TX. 76182
(817) 909-4222

-- 
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https://bugs.launchpad.net/bugs/739785

Title:
  qemu-i386 user mode can't fork (bash: fork: Invalid argument)

Status in QEMU:
  Fix Released
Status in qemu package in Debian:
  Fix Released

Bug description:
  Good time of day everybody,

  I have been trying to make usermode qemu on ARM with plugapps
  (archlinux) with archlinux i386 chroot to work.

  1. I installed arch linux in a virtuabox and created a chroot for it with mkarchroot. Transferred it to my pogo plug into /i386/
  2. I comiled qemu-i386 static and put it into /i386/usr/bin/
  ./configure --static --disable-blobs --disable-system --target-list=i386-linux-user
  make

  3. I also compiled linux kernel 2.6.38 with CONFIG_BINFMT_MISC=y and installed it.
  uname -a
  Linux Plugbox 2.6.38 #4 PREEMPT Fri Mar 18 22:19:10 CDT 2011 armv5tel Feroceon 88FR131 rev 1 (v5l) Marvell SheevaPlug Reference Board GNU/Linux

  4. Added the following options into /etc/rc.local
  /sbin/modprobe binfmt_misc
  /bin/mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc
  echo ':qemu-i386:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x03\x00:\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfb\xff\xff\xff:/usr/bin/qemu-i386:' >/proc/sys/fs/binfmt_misc/register

  5. Also copied ld-linux.so.3 (actually ld-2.13.so because ld-
  linux.so.3 is a link to that file) from /lib/ to /i386/lib/

  6.Now i chroot into /i386 and I get this:
  [root@Plugbox i386]# chroot .
  [II aI hnve ao n@P /]# pacman -Suy
  bash: fork: Invalid argument

  7.I also downloaded linux-user-test-0.3 from qemu website and ran the test:
  [root@Plugbox linux-user-test-0.3]# make
  ./qemu-linux-user.sh
  [qemu-i386]
  ../qemu-0.14.0/i386-linux-user/qemu-i386 -L ./gnemul/qemu-i386 i386/ls -l dummyfile
  BUG IN DYNAMIC LINKER ld.so: dl-version.c: 210: _dl_check_map_versions: Assertion `needed != ((void *)0)' failed!
  make: *** [test] Error 127

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