*   reflector_watches_total
    * While this is a backwards-incompatible change, it would have been impossible to setup reliable monitoring around these metrics since the labels were not stable. 
* Fix keymutex issues which may crash in some platforms. ([#74386](https://github.com/kubernetes/kubernetes/pull/74386), [@danielqsj](https://github.com/danielqsj))



# v1.12.6

[Documentation](https://docs.k8s.io)

## Downloads for v1.12.6

- Kube-apiserver: fixes a potential crash serving CustomResourceDefinitions that combine an invalid schema and CEL validation rules. ([#126167](https://github.com/kubernetes/kubernetes/pull/126167), [@cici37](https://github.com/cici37)) [SIG API Machinery and Testing]

- Fix memory leak on kube-scheduler preemption ([#111803](https://github.com/kubernetes/kubernetes/pull/111803), [@amewayne](https://github.com/amewayne)) [SIG Scheduling]
- Fixed potential scheduler crash when scheduling with unsatisfied nodes in PodTopologySpread. ([#111511](https://github.com/kubernetes/kubernetes/pull/111511), [@kerthcet](https://github.com/kerthcet)) [SIG Scheduling]

* remove retry operation on attach/detach  azure disk ([#70568](https://github.com/kubernetes/kubernetes/pull/70568), [@andyzhangx](https://github.com/andyzhangx))
* Fix cloud-controller-manager crash when using OpenStack provider and PersistentVolume initializing controller   ([#70459](https://github.com/kubernetes/kubernetes/pull/70459), [@mvladev](https://github.com/mvladev))

- Fixed potential scheduler crash when scheduling with unsatisfied nodes in PodTopologySpread. ([#110853](https://github.com/kubernetes/kubernetes/pull/110853), [@kerthcet](https://github.com/kerthcet)) [SIG Scheduling]

- Fixes problem where invalid selector on `PodDisruptionBudget` leads to a nil pointer dereference that causes the Controller manager to crash loop. ([#98750](https://github.com/kubernetes/kubernetes/pull/98750), [@mortent](https://github.com/mortent))

- Fixed a 1.25.12 regression where kube-controller-manager can crash when StatefulSet with Parallel policy and PVC labels is scaled up. ([#121187](https://github.com/kubernetes/kubernetes/pull/121187), [@aleksandra-malinowska](https://github.com/aleksandra-malinowska)) [SIG Apps]

`kubectl debug` provides support for common debugging workflows directly from kubectl. Troubleshooting scenarios supported in this release of `kubectl` include:
Troubleshoot workloads that crash on startup by creating a copy of the pod that uses a different container image or command.

cnt+104(FP), R12 LMG (R12), R2, R3 // Check that the src size is less than or equal to the buffer size. MOVD buf_len+88(FP), R4 CMP R0, R4 BGT crash // Check that the src size is a multiple of 16-bytes. MOVD R0, R4 AND $0xf, R4 BLT crash // non-zero // Check that the src size is less than or equal to the dst size. MOVD dst_len+40(FP), R4 CMP R0, R4 BGT crash MOVD R2, R4 MOVD R2, R6 MOVD R2, R8 MOVD R3, R5 MOVD R3, R7 MOVD R3, R9 ADDW $1, R5 ADDW $2, R7 ADDW $3, R9 incr: CMP R0, $64 BLT tail STMG R2,...

2F7F          ; mapped                 ; 8033          # 3.0  KANGXI RADICAL EAR
2F80          ; mapped                 ; 807F          # 3.0  KANGXI RADICAL BRUSH
2F81          ; mapped                 ; 8089          # 3.0  KANGXI RADICAL MEAT
2F82          ; mapped                 ; 81E3          # 3.0  KANGXI RADICAL MINISTER