Re: [Qemu-devel] [PATCH 0/3] iotests: Fix test 039

[Markus Armbruster]

Max Reitz <address@hidden> writes:

> On 2014-11-25 at 13:21, Markus Armbruster wrote:
>> Max Reitz <address@hidden> writes:
>>
>>> Test 039 used to fail
>> I'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".