diff options
| author | Huang, Ying <ying.huang@intel.com> | 2022-03-22 08:39:22 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2022-03-22 08:49:22 +0100 |
| commit | ab31c7fd2d37bc3580d9d712d5f2dfb69901fca9 (patch) | |
| tree | e924fd304530194eaab0b4b30361f6170206bdee /kernel/rcu/tree_plugin.h | |
| parent | 3387ce4d8a5f2956fab827edf499fe6780e83faa (diff) | |
sched/numa: Fix boot crash on arm64 systems
Qian Cai reported a boot crash on arm64 systems, caused by:
0fb3978b0aac ("sched/numa: Fix NUMA topology for systems with CPU-less nodes")
The bug is that node_state() must be supplied a valid node_states[] array index,
but in task_numa_placement() the max_nid search can fail with NUMA_NO_NODE,
which is not a valid index.
Fix it by checking that max_nid is a valid index.
[ mingo: Added changelog. ]
Fixes: 0fb3978b0aac ("sched/numa: Fix NUMA topology for systems with CPU-less nodes")
Reported-by: Qian Cai <quic_qiancai@quicinc.com>
Tested-by: Qian Cai <quic_qiancai@quicinc.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/rcu/tree_plugin.h')
0 files changed, 0 insertions, 0 deletions