Date: Sat, 20 Apr 2002 09:23:52 -0700 (PDT) From: Jake Burkholder <jake@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/sparc64/sparc64 rwindow.c Message-ID: <200204201623.g3KGNqe09261@freefall.freebsd.org>
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jake 2002/04/20 09:23:52 PDT
Modified files:
sys/sparc64/sparc64 rwindow.c
Log:
Check the alignment of the stack pointer before copying in windows from the
user stack in response to a failed window fill, allowing the process to be
killed if its wrong. This caused user programs which misalign their stack
pointer to get stuck in an infinite loop at the kernel-userland boundary,
which is mostly harmless.
The same thing causes a fatal RED state exception on OpenBSD and probably
NetBSD.
Inspired by: art@openbsd.org
Revision Changes Path
1.6 +4 -0 src/sys/sparc64/sparc64/rwindow.c
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