[Bug 75145] [SNB Regression]igt/kms_flip/flip-vs-modeset-vs-hang doesn't exit testing

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Mar 3 07:41:08 PST 2014


https://bugs.freedesktop.org/show_bug.cgi?id=75145

--- Comment #3 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
This is probably just the same old default context ban issue. There's a kernel
patch on the list to prevent the ban, but I'm not sure if we can apply it since
Mika tells me it's got something to do with dmesg spam handling in piglit.
There's another way to work around the problem by adding ~10second sleep
between the iterations of these subtests. That will prevent the context ban,
but it will slow down the test significantly.

The reason the test actually gets stuck while trying to terminate is that it
does something signal-unsafe (printf is the likely culprit) from the signal
hadler, and then gets stuck in some glic malloc futex.

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