Bodo Stroesser 81efcd3300 [PATCH] uml: more carefully test whether we are in a system call ... For security reasons, UML in is_syscall() needs to have access to code in vsyscall-page. The current implementation grants this access by explicitly allowing access to vsyscall in access_ok_skas(). With this change, copy_from_user() may be used to read the code. Ptrace access to vsyscall-page for debugging already was implemented in get_user_pages() by mainline. In i386, copy_from_user can't access vsyscall-page, but returns EFAULT. To make UML behave as i386 does, I changed is_syscall to use access_process_vm(current) to read the code from vsyscall-page. This doesn't hurt security, but simplifies the code and prepares implementation of stub-vmas. Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2006-03-27 08:44:38 -08:00
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alpha	[PATCH] bitops: alpha: use generic bitops	2006-03-26 08:57:11 -08:00
arm	[PATCH] bitops: arm: use generic bitops	2006-03-26 08:57:12 -08:00
arm26	[PATCH] bitops: arm26: use generic bitops	2006-03-26 08:57:12 -08:00
cris	[PATCH] bitops: cris: use generic bitops	2006-03-26 08:57:12 -08:00
frv	[PATCH] bitops: frv: use generic bitops	2006-03-26 08:57:12 -08:00
h8300	[PATCH] bitops: h8300: use generic bitops	2006-03-26 08:57:12 -08:00
i386	[PATCH] PM-Timer: don't use workaround if chipset is not buggy	2006-03-27 08:44:37 -08:00
ia64	[PATCH] bitops: ia64: make partial_page.bitmap an unsigned long	2006-03-26 08:57:15 -08:00
m32r	[PATCH] bitops: m32r: use generic bitops	2006-03-26 08:57:12 -08:00
m68k	[PATCH] bitops: m68k: use generic bitops	2006-03-26 08:57:12 -08:00
m68knommu	[PATCH] bitops: m68knommu: use generic bitops	2006-03-26 08:57:13 -08:00
mips	[PATCH] bitops: mips: use generic bitops	2006-03-26 08:57:13 -08:00
parisc	[PATCH] bitops: parisc: use generic bitops	2006-03-26 08:57:14 -08:00
powerpc	[PATCH] bitops: powerpc: use generic bitops	2006-03-26 08:57:14 -08:00
ppc	[PATCH] ppc: fix undefined reference to hweight32	2006-03-26 08:57:13 -08:00
s390	[PATCH] bitops: s390: use generic bitops	2006-03-26 08:57:14 -08:00
sh	[PATCH] bitops: sh: use generic bitops	2006-03-26 08:57:14 -08:00
sh64	[PATCH] bitops: sh64: use generic bitops	2006-03-26 08:57:14 -08:00
sparc	[PATCH] bitops: sparc: use generic bitops	2006-03-26 08:57:14 -08:00
sparc64	[SPARC64]: Kill duplicate exports of string library functions.	2006-03-26 15:30:29 -08:00
um	[PATCH] uml: more carefully test whether we are in a system call	2006-03-27 08:44:38 -08:00
v850	[PATCH] bitops: v850: use generic bitops	2006-03-26 08:57:14 -08:00
x86_64	[PATCH] bitops: x86_64: use generic bitops	2006-03-26 08:57:14 -08:00
xtensa	[PATCH] bitops: xtensa: use generic bitops	2006-03-26 08:57:15 -08:00