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[Qemu-devel] [Bug 1591611] Re: chroot using qemu-x86_64-static fails on
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [Bug 1591611] Re: chroot using qemu-x86_64-static fails on ppc64el |
Date: |
Sun, 12 Jun 2016 22:05:02 -0000 |
We don't have an implementation of the target-specific signal handling
code for the x86-64 guest. Anything that cares about signals therefore
won't work with this target.
In general the x86-64 guest support for linux-user isn't very good; ARM
or AArch64 guest should behave rather better.
--
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https://bugs.launchpad.net/bugs/1591611
Title:
chroot using qemu-x86_64-static fails on ppc64el
Status in QEMU:
New
Bug description:
When attempting to use qemu-x86_64-static from qemu 2.5.0 on a ppc64el
host to chroot into an amd64 environment, all commands fail with an
assertion error. /usr/bin/qemu-x86_64-static from the host was copied
into the chroot /usr/bin, and the host has multiformat support in the
kernel.
Sample output illustrating the problem, as well as bash builtins
working:
# chroot /virtualbox/scratchdisks_local_001/amd64_chroot qemu-x86_64-static
/bin/bash
# ls
bash: ../sysdeps/nptl/fork.c:136: __libc_fork: Assertion `({ __typeof
(self->tid) __value; if (sizeof (__value) == 1) asm volatile ("movb
%%fs:%P2,%b0" : "=q" (__value) : "0" (0), "i" (__builtin_offsetof (struct
pthread, tid))); else if (sizeof (__value) == 4) asm volatile ("movl
%%fs:%P1,%0" : "=r" (__value) : "i" (__builtin_offsetof (struct pthread,
tid))); else { if (sizeof (__value) != 8) abort (); asm volatile ("movq
%%fs:%P1,%q0" : "=r" (__value) : "i" (__builtin_offsetof (struct pthread,
tid))); } __value; }) != ppid' failed.
setup_frame: not implemented
setup_frame: not implemented
qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Segmentation fault
setup_frame: not implemented
setup_frame: not implemented
# echo TEST
TEST
# cat test
bash: ../sysdeps/nptl/fork.c:136: __libc_fork: Assertion `({ __typeof
(self->tid) __value; if (sizeof (__value) == 1) asm volatile ("movb
%%fs:%P2,%b0" : "=q" (__value) : "0" (0), "i" (__builtin_offsetof (struct
pthread, tid))); else if (sizeof (__value) == 4) asm volatile ("movl
%%fs:%P1,%0" : "=r" (__value) : "i" (__builtin_offsetof (struct pthread,
tid))); else { if (sizeof (__value) != 8) abort (); asm volatile ("movq
%%fs:%P1,%q0" : "=r" (__value) : "i" (__builtin_offsetof (struct pthread,
tid))); } __value; }) != ppid' failed.
qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Segmentation fault
It is currently unknown if other host architectures (e.g. aarch64) are
also affected.
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- [Qemu-devel] [Bug 1591611] [NEW] chroot using qemu-x86_64-static fails on ppc64el, Timothy Pearson, 2016/06/12
- [Qemu-devel] [Bug 1591611] Re: chroot using qemu-x86_64-static fails on ppc64el,
Peter Maydell <=
- [Qemu-devel] [Bug 1591611] Re: chroot using qemu-x86_64-static fails on ppc64el, Timothy Pearson, 2016/06/12
- [Qemu-devel] [Bug 1591611] Re: chroot using qemu-x86_64-static fails on ppc64el, Peter Maydell, 2016/06/13
- [Qemu-devel] [Bug 1591611] Re: chroot using qemu-x86_64-static fails on ppc64el, Timothy Pearson, 2016/06/13
- [Qemu-devel] [Bug 1591611] Re: chroot using qemu-x86_64-static fails on ppc64el, Peter Maydell, 2016/06/13
- [Qemu-devel] [Bug 1591611] Re: chroot using qemu-x86_64-static fails on ppc64el, Timothy Pearson, 2016/06/16
- [Qemu-devel] [Bug 1591611] Re: chroot using qemu-x86_64-static fails on ppc64el, Peter Maydell, 2016/06/16
- [Qemu-devel] [Bug 1591611] Re: chroot using qemu-x86_64-static fails on ppc64el, Timothy Pearson, 2016/06/16
- [Qemu-devel] [Bug 1591611] Re: chroot using qemu-x86_64-static fails on ppc64el, Peter Maydell, 2016/06/16
- [Qemu-devel] [Bug 1591611] Re: chroot using qemu-x86_64-static fails on ppc64el, Timothy Pearson, 2016/06/16
- [Qemu-devel] [Bug 1591611] Re: chroot using qemu-x86_64-static fails on ppc64el, Timothy Pearson, 2016/06/16