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| author | Oliver Upton <[email protected]> | 2024-04-24 17:39:58 +0000 |
|---|---|---|
| committer | Oliver Upton <[email protected]> | 2024-04-24 19:09:35 +0000 |
| commit | 6ddb4f372fc63210034b903d96ebbeb3c7195adb (patch) | |
| tree | d550248eb3b7515c4cb149802bbf2b45d56cfcc9 /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py | |
| parent | fec50db7033ea478773b159e0e2efb135270e3b7 (diff) | |
KVM: arm64: vgic-v2: Check for non-NULL vCPU in vgic_v2_parse_attr()
vgic_v2_parse_attr() is responsible for finding the vCPU that matches
the user-provided CPUID, which (of course) may not be valid. If the ID
is invalid, kvm_get_vcpu_by_id() returns NULL, which isn't handled
gracefully.
Similar to the GICv3 uaccess flow, check that kvm_get_vcpu_by_id()
actually returns something and fail the ioctl if not.
Cc: [email protected]
Fixes: 7d450e282171 ("KVM: arm/arm64: vgic-new: Add userland access to VGIC dist registers")
Reported-by: Alexander Potapenko <[email protected]>
Tested-by: Alexander Potapenko <[email protected]>
Reviewed-by: Alexander Potapenko <[email protected]>
Reviewed-by: Marc Zyngier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Oliver Upton <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py')
0 files changed, 0 insertions, 0 deletions