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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-02 00:41:04 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-02 00:41:04 +0300
commit5db6db0d400edd8bec274e34960cfa22838e1df5 (patch)
tree3d7934f2eb27a2b72b87eae3c2918cf2e635d814 /security
parent5fab10041b4389b61de7e7a49893190bae686241 (diff)
parent2fefc97b2180518bac923fba3f79fdca1f41dc15 (diff)
downloadlinux-5db6db0d400edd8bec274e34960cfa22838e1df5.tar.xz
Merge branch 'work.uaccess' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull uaccess unification updates from Al Viro: "This is the uaccess unification pile. It's _not_ the end of uaccess work, but the next batch of that will go into the next cycle. This one mostly takes copy_from_user() and friends out of arch/* and gets the zero-padding behaviour in sync for all architectures. Dealing with the nocache/writethrough mess is for the next cycle; fortunately, that's x86-only. Same for cleanups in iov_iter.c (I am sold on access_ok() in there, BTW; just not in this pile), same for reducing __copy_... callsites, strn*... stuff, etc. - there will be a pile about as large as this one in the next merge window. This one sat in -next for weeks. -3KLoC" * 'work.uaccess' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (96 commits) HAVE_ARCH_HARDENED_USERCOPY is unconditional now CONFIG_ARCH_HAS_RAW_COPY_USER is unconditional now m32r: switch to RAW_COPY_USER hexagon: switch to RAW_COPY_USER microblaze: switch to RAW_COPY_USER get rid of padding, switch to RAW_COPY_USER ia64: get rid of copy_in_user() ia64: sanitize __access_ok() ia64: get rid of 'segment' argument of __do_{get,put}_user() ia64: get rid of 'segment' argument of __{get,put}_user_check() ia64: add extable.h powerpc: get rid of zeroing, switch to RAW_COPY_USER esas2r: don't open-code memdup_user() alpha: fix stack smashing in old_adjtimex(2) don't open-code kernel_setsockopt() mips: switch to RAW_COPY_USER mips: get rid of tail-zeroing in primitives mips: make copy_from_user() zero tail explicitly mips: clean and reorder the forest of macros... mips: consolidate __invoke_... wrappers ...
Diffstat (limited to 'security')
-rw-r--r--security/Kconfig9
-rw-r--r--security/tomoyo/network.c2
2 files changed, 1 insertions, 10 deletions
diff --git a/security/Kconfig b/security/Kconfig
index d900f47eaa68..213df4d4f2c1 100644
--- a/security/Kconfig
+++ b/security/Kconfig
@@ -125,17 +125,8 @@ config HAVE_HARDENED_USERCOPY_ALLOCATOR
validating memory ranges against heap object sizes in
support of CONFIG_HARDENED_USERCOPY.
-config HAVE_ARCH_HARDENED_USERCOPY
- bool
- help
- The architecture supports CONFIG_HARDENED_USERCOPY by
- calling check_object_size() just before performing the
- userspace copies in the low level implementation of
- copy_to_user() and copy_from_user().
-
config HARDENED_USERCOPY
bool "Harden memory copies between kernel and userspace"
- depends on HAVE_ARCH_HARDENED_USERCOPY
depends on HAVE_HARDENED_USERCOPY_ALLOCATOR
select BUG
help
diff --git a/security/tomoyo/network.c b/security/tomoyo/network.c
index 97527710a72a..6c02ac478247 100644
--- a/security/tomoyo/network.c
+++ b/security/tomoyo/network.c
@@ -608,7 +608,7 @@ static int tomoyo_check_unix_address(struct sockaddr *addr,
static bool tomoyo_kernel_service(void)
{
/* Nothing to do if I am a kernel service. */
- return segment_eq(get_fs(), KERNEL_DS);
+ return uaccess_kernel();
}
/**