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[Bug 1883560] Re: mips linux-user builds occasionly crash randomly only
From: |
Alex Bennée |
Subject: |
[Bug 1883560] Re: mips linux-user builds occasionly crash randomly only to be fixed by a full clean re-build |
Date: |
Tue, 16 Jun 2020 16:49:50 -0000 |
OK the syscall_nr failure is a red hearing - that was affected by a
stray generated file in my source tree (maybe I accidentally ran make in
the top directory?).
However I've just run into the mips64le-linux-user crash again which
didn't go away until I deleted all mips* directories and rebuilt.
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https://bugs.launchpad.net/bugs/1883560
Title:
mips linux-user builds occasionly crash randomly only to be fixed by a
full clean re-build
Status in QEMU:
New
Bug description:
From time to time I find check-tcg crashes with a one of the MIPS
binaries. The last time it crashed was running the test:
./mips64el-linux-user/qemu-mips64el ./tests/tcg/mips64el-linux-
user/threadcount
Inevitably after some time noodling around wondering what could be
causing this weird behaviour I wonder if it is a build issue. I wipe
all the mips* build directories, re-run configure and re-build and
voila problem goes away.
It seems there must be some sort of build artefact which isn't being
properly re-generated on a build update which causes weird problems.
Additional data point if I:
rm -rf mips64el-linux-user
../../configure
make
then I see failures in mip32 builds - eg:
GEN mipsn32el-linux-user/config-target.h
In file included from /home/alex/lsrc/qemu.git/linux-user/syscall_defs.h:10,
from /home/alex/lsrc/qemu.git/linux-user/qemu.h:16,
from /home/alex/lsrc/qemu.git/linux-user/linuxload.c:5:
/home/alex/lsrc/qemu.git/linux-user/mips64/syscall_nr.h:1: error:
unterminated #ifndef
#ifndef LINUX_USER_MIPS64_SYSCALL_NR_H
make[1]: *** [/home/alex/lsrc/qemu.git/rules.mak:69:
linux-user/linuxload.o] Error 1
make[1]: *** Waiting for unfinished jobs....
which implies there is a cross dependency between different targets
somewhere. If I executed:
rm -rf mips*
before re-configuring and re-building then everything works again.
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