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| author | Sebastian Ott <[email protected]> | 2025-05-05 17:31:48 +0000 |
|---|---|---|
| committer | Oliver Upton <[email protected]> | 2025-05-05 19:12:27 +0000 |
| commit | 157dbc4a321f5bb6f8b6c724d12ba720a90f1a7c (patch) | |
| tree | eec83e760417c9711a719ac8fa42a7e3924746be /drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | |
| parent | Linux 6.15-rc4 (diff) | |
| download | kernel-157dbc4a321f5bb6f8b6c724d12ba720a90f1a7c.tar.gz kernel-157dbc4a321f5bb6f8b6c724d12ba720a90f1a7c.zip | |
KVM: arm64: Fix uninitialized memcache pointer in user_mem_abort()
Commit fce886a60207 ("KVM: arm64: Plumb the pKVM MMU in KVM") made the
initialization of the local memcache variable in user_mem_abort()
conditional, leaving a codepath where it is used uninitialized via
kvm_pgtable_stage2_map().
This can fail on any path that requires a stage-2 allocation
without transition via a permission fault or dirty logging.
Fix this by making sure that memcache is always valid.
Fixes: fce886a60207 ("KVM: arm64: Plumb the pKVM MMU in KVM")
Signed-off-by: Sebastian Ott <[email protected]>
Reviewed-by: Marc Zyngier <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/kvmarm/[email protected]/
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Oliver Upton <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c')
0 files changed, 0 insertions, 0 deletions