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[Qemu-devel] [Bug 955379] Re: cmake hangs with qemu-arm-static
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [Bug 955379] Re: cmake hangs with qemu-arm-static |
Date: |
Fri, 30 Nov 2012 16:38:27 -0000 |
I'll take the bigger usecase, please. It's pretty hard to debug race
conditions that don't manifest often enough to let you do useful
logging.
>From the time or two I caught it hanging, it looks like qemu is sleeping in
>poll, and there's a zombie child process. I wonder if what's happening is that
>the SIGCHLD is coming in just before syscall.c executes the poll syscall, so
>that qemu queues the signal for delivery to the guest (but never actually
>delivers it) and then enters a poll syscall that won't return (because the
>SIGCHLD has already arrived). If so, fixing this would require the significant
>redesign sketched out here:
http://lists.gnu.org/archive/html/qemu-devel/2011-12/msg00384.html
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https://bugs.launchpad.net/bugs/955379
Title:
cmake hangs with qemu-arm-static
Status in QEMU:
New
Status in Linaro QEMU:
New
Status in “qemu-linaro” package in Ubuntu:
Confirmed
Bug description:
I'm using git commit 3e7ecd976b06f... configured with --target-list
=arm-linux-user --static in a chroot environment to compile some
things. I ran into this problem with both pcl and opencv-2.3.1. cmake
consistently freezes at some point during its execution, though in a
different spot each time, usually during a step when it's searching
for some libraries. For instance, pcl most commonly stops after:
[snip]
-- Boost version: 1.46.1
-- Found the following Boost libraries:
-- system
-- filesystem
-- thread
-- date_time
-- checking for module 'eigen3'
-- found eigen3, version 3.0.1
which is perplexing because it freezes after finding what it wants,
not during the search. When it does get past that point, it does so
almost immediately but freezes somewhere else.
I'm using 64-bit Ubuntu 11.10 with kernel release 3.0.0-16-generic
with an Intel i5.
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- [Qemu-devel] [Bug 955379] Re: cmake hangs with qemu-arm-static, (continued)
- [Qemu-devel] [Bug 955379] Re: cmake hangs with qemu-arm-static, Ricardo Salveti, 2012/11/22
- [Qemu-devel] [Bug 955379] Re: cmake hangs with qemu-arm-static, Launchpad Bug Tracker, 2012/11/23
- [Qemu-devel] [Bug 955379] Re: cmake hangs with qemu-arm-static, Tim Penhey, 2012/11/25
- [Qemu-devel] [Bug 955379] Re: cmake hangs with qemu-arm-static, Janne Karhunen, 2012/11/28
- [Qemu-devel] [Bug 955379] Re: cmake hangs with qemu-arm-static, Janne Karhunen, 2012/11/29
- [Qemu-devel] [Bug 955379] Re: cmake hangs with qemu-arm-static, Janne Karhunen, 2012/11/29
- [Qemu-devel] [Bug 955379] Re: cmake hangs with qemu-arm-static, Peter Maydell, 2012/11/30
- [Qemu-devel] [Bug 955379] Re: cmake hangs with qemu-arm-static, Janne Karhunen, 2012/11/30
- [Qemu-devel] [Bug 955379] Re: cmake hangs with qemu-arm-static,
Peter Maydell <=
- [Qemu-devel] [Bug 955379] Re: cmake hangs with qemu-arm-static, Peter Maydell, 2012/11/30