twx-linux

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Suraj Jitindar Singh d9e8b4ba03 powerpc: Add barrier_nospec to raw_copy_in_user()

commit 6fbcdd5909 upstream.

Commit ddf35cf376 ("powerpc: Use barrier_nospec in copy_from_user()")
Added barrier_nospec before loading from user-controlled pointers. The
intention was to order the load from the potentially user-controlled
pointer vs a previous branch based on an access_ok() check or similar.

In order to achieve the same result, add a barrier_nospec to the
raw_copy_in_user() function before loading from such a user-controlled
pointer.

Fixes: ddf35cf376 ("powerpc: Use barrier_nospec in copy_from_user()")
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-09-19 09:09:35 +02:00

alpha

…

arc

ARC: mm: SIGSEGV userspace trying to access kernel virtual memory

2019-09-16 08:22:14 +02:00

arm

ARM: dts: gemini: Set DIR-685 SPI CS as active low

2019-09-16 08:22:19 +02:00

arm64

arm64: dts: stratix10: add the sysmgr-syscon property from the gmac's

2019-09-16 08:22:09 +02:00