perf/x86/uncore: Fix potential NULL pointer in uncore_get_alias_name

mainline inclusion
from mainline-v6.3-rc1
commit 3af548f2
category: bugfix
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I7H29Y
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3af548f2361077cd53762c88d62343d4e8ea1efb



Intel-SIG: commit 3af548f2 perf/x86/uncore: Fix potential NULL pointer in uncore_get_alias_name
Backport SPR MCC UPI uncore discovery warning fixes to OLK-5.10.

-------------------------------------

The current code assumes that the discovery table provides valid
box_ids for the normal units. It's not the case anymore since some units
in the discovery table are broken on some SPR variants.

Factor out uncore_get_box_id(). Check the existence of the type->box_ids
before using it. If it's not available, use pmu_idx.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Michael Petlan <mpetlan@redhat.com>
Link: https://lore.kernel.org/r/20230112200105.733466-3-kan.liang@linux.intel.com


Signed-off-by: Yunying Sun <yunying.sun@intel.com>