linux/arch/um
Jeff Dike 14251809b1 [PATCH] uml: host VDSO fix
This fixes a problem seen by a number of people running UML on newer host
kernels.  init would hang with an infinite segfault loop.

It turns out that the host kernel was providing a AT_SYSINFO_EHDR of
0xffffe000, which faked UML into believing that the host VDSO page could be
reused.  However, AT_SYSINFO pointed into the middle of the address space, and
was unmapped as a result.  Because UML was providing AT_SYSINFO_EHDR and
AT_SYSINFO to its own processes, these would branch to nowhere when trying to
use the VDSO.

The fix is to also check the location of AT_SYSINFO when deciding whether to
use the host's VDSO.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-01 14:53:38 -08:00
..
drivers [PATCH] mark struct file_operations const 2 2007-02-12 09:48:44 -08:00
include [PATCH] Dynamic kernel command-line: fixups 2007-02-12 09:48:39 -08:00
kernel [PATCH] Dynamic kernel command-line: fixups 2007-02-12 09:48:39 -08:00
os-Linux [PATCH] uml: host VDSO fix 2007-03-01 14:53:38 -08:00
scripts kbuild: fix ia64 breakage after introducing make -rR 2006-07-01 09:58:02 +02:00
sys-i386 [PATCH] uml: fix host LDT lookup initialization locking, try 2 2007-03-01 14:53:38 -08:00
sys-ia64 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sys-ppc Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
sys-x86_64 [PATCH] uml: x86_64 ptrace fixes 2007-02-11 10:51:24 -08:00
Kconfig [PATCH] sort the devres mess out 2007-02-11 11:18:07 -08:00
Kconfig.char [PATCH] uml: enable RAW 2007-03-01 14:53:38 -08:00
Kconfig.debug [PATCH] uml: remove syscall debugging 2006-07-10 13:24:24 -07:00
Kconfig.i386 [PATCH] fix indentation-related breakage in Kconfig.i386 2007-01-30 08:39:21 -08:00
Kconfig.net [PATCH] uml: Rename Kconfig files to be like the other arches 2005-09-05 00:06:19 -07:00
Kconfig.scsi [PATCH] uml: Rename Kconfig files to be like the other arches 2005-09-05 00:06:19 -07:00
Kconfig.x86_64 [PATCH] um: fix undefined reference to hweight32 2006-03-26 08:57:09 -08:00
Makefile [PATCH] uml: fix compilation options for USER_OBJS 2006-10-30 12:08:41 -08:00
Makefile-i386 [PATCH] uml: fix compilation options for USER_OBJS 2006-10-30 12:08:41 -08:00
Makefile-ia64 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile-os-Linux Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile-ppc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile-skas [PATCH] uml makefiles sanitized 2005-09-29 08:46:26 -07:00
Makefile-tt Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile-x86_64 [PATCH] uml: fix compilation options for USER_OBJS 2006-10-30 12:08:41 -08:00
config.release Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
defconfig [PATCH] uml: remove syscall debugging 2006-07-10 13:24:24 -07:00