diff options
| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-05-29 16:34:39 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2024-06-28 20:38:30 +0300 |
| commit | 2488444274c70038eb6b686cba5f1ce48ebb9cdd (patch) | |
| tree | bf492dcc7e6d47487b4bb6f29e14a9380d6af0ca /scripts/clang-tools/gen_compile_commands.py | |
| parent | 8d34b6f17b9ac93faa2791eb037dcb08bdf755de (diff) | |
| download | linux-2488444274c70038eb6b686cba5f1ce48ebb9cdd.tar.xz | |
arm64: acpi: Harden get_cpu_for_acpi_id() against missing CPU entry
In a review discussion of the changes to support vCPU hotplug where
a check was added on the GICC being enabled if was online, it was
noted that there is need to map back to the cpu and use that to index
into a cpumask. As such, a valid ID is needed.
If an MPIDR check fails in acpi_map_gic_cpu_interface() it is possible
for the entry in cpu_madt_gicc[cpu] == NULL. This function would
then cause a NULL pointer dereference. Whilst a path to trigger
this has not been established, harden this caller against the
possibility.
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20240529133446.28446-13-Jonathan.Cameron@huawei.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'scripts/clang-tools/gen_compile_commands.py')
0 files changed, 0 insertions, 0 deletions