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From: | Max Reitz |
Subject: | Re: [Qemu-devel] [PATCH 0/3] iotests: Fix test 039 |
Date: | Tue, 25 Nov 2014 14:50:11 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 |
On 2014-11-25 at 14:48, Markus Armbruster wrote:
Max Reitz <address@hidden> writes:On 2014-11-25 at 14:20, Markus Armbruster wrote:Max Reitz <address@hidden> writes:On 2014-11-25 at 13:21, Markus Armbruster wrote:Max Reitz <address@hidden> writes:Test 039 used to failI'm confused: "used to" suggests it doesn't anymore, but you sending a patches strongly suggests something's broken.Well, it used to fail before this series. :-P You're right, this sounds bad. Currently, 039 does fail, at least on any system with a /proc/sys/kernel/core_pattern passing the dump to another program. After this series, it does no longer.because qemu-io -c abort may generate core dumps even with ulimit -c 0 (and the output then contains "(core dumped)").How?See the patches[1][2] by Mao Chuan Li. If /proc/sys/kernel/core_pattern passes the dump to another program, ulimit -c 0 does not matter. [1] http://lists.nongnu.org/archive/html/qemu-devel/2014-11/msg02092.html [2] http://lists.nongnu.org/archive/html/qemu-devel/2014-11/msg02093.html The problem with those patches is that they require access to /proc/sys/kernel/core_pattern. I don't like having to run the iotests as root.To me, this sounds like a case of "doctor, it hurts when I do this".What do you mean? That I don't want the iotests to run as root? Or that I don't want to go the alternative of filtering out the "(core dumped)" message?I mean: Doctor, it hurts when I write weird stuff to /proc/sys/kernel/core_pattern. Don't do that then. If you want to be a nicer doc than me, go right ahead.
I don't write weird stuff there. My default system configuration does (and mine is not the only one):
$ uname -r 3.17.3-200.fc20.x86_64 $ cat /proc/sys/kernel/core_pattern|/usr/sbin/chroot /proc/%P/root /usr/libexec/abrt-hook-ccpp %s %c %p %u %g %t e
Max
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