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[Qemu-devel] Bug in mips user-linux
From: |
Torbjörn Granlund |
Subject: |
[Qemu-devel] Bug in mips user-linux |
Date: |
Mon, 10 Oct 2016 03:01:09 +0200 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.3 (berkeley-unix) |
This is a long-standing issue; I've reproduced it in 2.5.0, 2.6.2, and
2.7.0.
Command used: qemu-mipsn32 ./reuse
The binary file 'reuse' is attached.
Funnily enough, it does not fail every time. (I would expect user-level
emulation to be pretty deterministic, but alas, this is not.)
When it fails, it either says,
qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Segmentation fault
or unfrequently,
mipsn: /var/tmp/build.2567/qemu-2.6.2/translate-all.c:1884: page_set_flags:
Assertion `start < end' failed.
qemu: uncaught target signal 6 (Aborted) - core dumped
while the same binary runs fine on hardware as well as
emulated systems running under qemu-system-mips64.
The failures only happen for the n32 ABI (not o32 or 64).
This test case comes from GMP (default gcc compile of
gmp/tests/mpz/reuse.c).
(Host and guest systems all run Debian 8.)
reuse.xz
Description: Binary data
--
Torbjörn
Please encrypt, key id 0xC8601622
- [Qemu-devel] Bug in mips user-linux,
Torbjörn Granlund <=