Re: [PATCH] x86: Clear DF before calling signal handler

From: H. Peter Anvin
Date: Wed Mar 05 2008 - 13:22:18 EST


Aurelien Jarno wrote:
The Linux kernel currently does not clear the direction flag before
calling a signal handler, whereas the x86/x86-64 ABI requires that.
This become a real problem with gcc version 4.3, which assumes that
the direction flag is correctly cleared at the entry of a function.

This patches changes the setup_frame() functions to clear the
direction before entering the signal handler.

Signed-off-by: Aurelien Jarno <aurelien@xxxxxxxxxxx>

Acked-by: H. Peter Anvin <hpa@xxxxxxxxx>

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