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| author | Yu-cheng Yu <yu-cheng.yu@intel.com> | 2016-07-11 18:18:54 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-07-11 16:43:59 +0200 |
| commit | 1fc2b67b43d5001b92b3a002b988884ad0137e99 (patch) | |
| tree | 1e396558f22e3671c9e9d3f4de85903f4eaaa69c /virt | |
| parent | x86/fpu/xstate: Fix xstate_offsets, xstate_sizes for non-extended xstates (diff) | |
| download | linux-1fc2b67b43d5001b92b3a002b988884ad0137e99.tar.xz linux-1fc2b67b43d5001b92b3a002b988884ad0137e99.zip | |
x86/fpu/xstate: Fix __fpu_restore_sig() for XSAVES
When the kernel is using XSAVES compacted format, we cannot do
__copy_from_user() from a signal frame, which has standard-format data.
Fix it by using copyin_to_xsaves(), which converts between formats and
filters out all supervisor states that we do not allow userspace to
write.
Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Dave Hansen <dave.hansen@intel.com>
Cc: H. Peter Anvin <h.peter.anvin@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi V Shankar <ravi.v.shankar@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1468253937-40008-2-git-send-email-fenghua.yu@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions