linux/arch/um
Paolo 'Blaisorblade' Giarrusso 5d48545e5e [PATCH] uml: make execvp safe for our usage
Reimplement execvp for our purposes - after we call fork() it is fundamentally
unsafe to use the kernel allocator - current is not valid there.  So we simply
pass to our modified execvp() a preallocated buffer.  This fixes a real bug
and works very well in testing (I've seen indirectly warning messages from the
forked thread - they went on the pipe connected to its stdout and where read
as a number by UML, when calling read_output().  I verified the obtained
number corresponded to "BUG:").

The added use of __cant_sleep() is not a new bug since __cant_sleep() is
already used in the same function - passing an atomicity parameter would be
better but it would require huge change, stating that this function must not
be called in atomic context and can sleep is a better idea (will make sure of
this gradually).

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-25 13:28:34 -08:00
..
drivers [PATCH] uml ubd driver: various little changes 2006-10-31 08:07:00 -08:00
include [PATCH] uml: make execvp safe for our usage 2006-11-25 13:28:34 -08:00
kernel [PATCH] uml: add _text definition to linker scripts 2006-10-31 08:07:00 -08:00
os-Linux [PATCH] uml: make execvp safe for our usage 2006-11-25 13:28:34 -08:00
scripts kbuild: fix ia64 breakage after introducing make -rR 2006-07-01 09:58:02 +02:00
sys-i386 [PATCH] Fix "Remove the use of _syscallX macros in UML" 2006-10-30 12:08:41 -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] Fix "Remove the use of _syscallX macros in UML" 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
Kconfig [PATCH] uml: use DEFCONFIG_LIST to avoid reading host's config 2006-10-20 10:26:36 -07:00
Kconfig.char [PATCH] uml: kconfig - silence warning 2006-10-20 10:26:36 -07:00
Kconfig.debug [PATCH] uml: remove syscall debugging 2006-07-10 13:24:24 -07:00
Kconfig.i386 [PATCH] uml: allow finer tuning for host VMSPLIT setting 2006-10-11 11:14:21 -07:00
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