Messages in this thread | | | Date | Fri, 26 Nov 2010 16:31:06 +0100 | From | Tejun Heo <> | Subject | Possible FPU context corruption w/ CONFIG_PREEMPT |
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Hello, guys.
Heinz-Bernd Eggenstein reports a possible FPU context corruption w/ CONFIG_PREEMPT. Please take a look at the following forum post.
http://einstein.phys.uwm.edu/forum_thread.php?id=8516
openSUSE 11.3 desktop kernel which has CONFIG_PREEMPT set is triggering SIGFPE while the default kernel w/o preemption works fine. He also notes that a similar bug was fixed in 2008 by commit 06c38d5e (x86-64: fix FPU corruption with signals and preemption) from Suresh. Does it ring anyone's bell?
Heinz, is there a simple procedure to reproduce the problem, or would it be possible to lure you into bisection?
Thanks.
-- tejun
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