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authorSuraj Jitindar Singh <sjitindarsingh@gmail.com>2019-03-06 12:10:38 +1100
committerMichael Ellerman <mpe@ellerman.id.au>2019-07-03 15:19:36 +1000
commit6fbcdd59094ade30db63f32316e9502425d7b256 (patch)
treeb8bb4bd4a9c755717f4513f876547040eabaa78f /tools/testing/selftests/powerpc
parentKVM: PPC: Book3S HV: Fix CR0 setting in TM emulation (diff)
downloadlinux-dev-6fbcdd59094ade30db63f32316e9502425d7b256.tar.xz
linux-dev-6fbcdd59094ade30db63f32316e9502425d7b256.zip
powerpc: Add barrier_nospec to raw_copy_in_user()
Commit ddf35cf3764b ("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: ddf35cf3764b ("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>
Diffstat (limited to 'tools/testing/selftests/powerpc')
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