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| author | Joerg Roedel <[email protected]> | 2021-03-03 14:17:16 +0000 |
|---|---|---|
| committer | Borislav Petkov <[email protected]> | 2021-03-09 11:37:54 +0000 |
| commit | bffe30dd9f1f3b2608a87ac909a224d6be472485 (patch) | |
| tree | c58ca5fed0bca563661eac21fa1d72c0c2f72c30 /drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | |
| parent | x86/sev-es: Correctly track IRQ states in runtime #VC handler (diff) | |
| download | kernel-bffe30dd9f1f3b2608a87ac909a224d6be472485.tar.gz kernel-bffe30dd9f1f3b2608a87ac909a224d6be472485.zip | |
x86/sev-es: Use __copy_from_user_inatomic()
The #VC handler must run in atomic context and cannot sleep. This is a
problem when it tries to fetch instruction bytes from user-space via
copy_from_user().
Introduce a insn_fetch_from_user_inatomic() helper which uses
__copy_from_user_inatomic() to safely copy the instruction bytes to
kernel memory in the #VC handler.
Fixes: 5e3427a7bc432 ("x86/sev-es: Handle instruction fetches from user-space")
Signed-off-by: Joerg Roedel <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Cc: [email protected] # v5.10+
Link: https://lkml.kernel.org/r/[email protected]
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
0 files changed, 0 insertions, 0 deletions