Re: [uml-devel] [PATCH] um: fix FPU register double-restore after sigreturn
From: Richard Weinberger <richard@nod.at>
Date: 2016-03-17 22:21:54
From: Richard Weinberger <richard@nod.at>
Date: 2016-03-17 22:21:54
Eli, Am 16.03.2016 um 02:25 schrieb Eli Cooper:
This patch prevents userspace() from incorrectly restoring FPU registers after a sigreturn or rt_sigreturn system call, which has already restored FPU registers to the state prior to the signal handler was invoked. Fixes FPU state corruption after invoking the signal handler.
First of all, thanks a lot for hunting down these nasty issues! Where exactly are the FPU regs restored in the sigregturn case? Not sure if I fully understand the error scenario. Thanks, //richard ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785231&iu=/4140 _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel