There is a new pull request by mmnmnnmnmm against master on the void-packages repository

https://github.com/mmnmnnmnmm/void-packages linux5.19-rcu
https://github.com/void-linux/void-packages/pull/39023

linux5.19: Set CONFIG_RCU_EXP_CPU_STALL_TIMEOUT to zero

Linux 5.19 causes an rcu stall error on boot.

Diffing the 5.19 and 5.15 config I found the addition of the new CONFIG_RCU_EXP_CPU_STALL_TIMEOUT,
which appears erroneously defined as 20, as the Void kernel config defines CONFIG_ANDROID ¹.

Setting CONFIG_RCU_EXP_CPU_STALL_TIMEOUT to zero, which should be the same behaviour as in previous kernels,
fixes the problem.

¹ https://www.kernel.org/doc/html/latest/RCU/stallwarn.html


This has been fixed in kernel v6.0: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1045a06724f322ed61f1ffb994427c7bdbe64647

Thread I found this fix and information from:
https://lkml.org/lkml/2022/6/28/1051
https://lore.kernel.org/all/1656357116.rhe0mufk6a.none@localhost/

dmesg when set to 20:

```
kern.err: [    2.424048] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-... } 21 jiffies s: 29 root: 0x1/.
kern.info: [    2.424059] fbcon: Taking over console
kern.err: [    2.424063] rcu: blocking rcu_node structures (internal RCU debug):
kern.info: [    2.424066] Task dump for CPU 0:
kern.info: [    2.424068] task:kworker/0:3     state:R  running task     stack:    0 pid:  324 ppid:     2 flags:0x00004008
kern.info: [    2.424073] Workqueue: events work_for_cpu_fn
kern.info: [    2.424078] Call Trace:
kern.info: [    2.424080]  <TASK>
kern.info: [    2.424082]  ? __slab_free+0xa0/0x2d0
kern.info: [    2.424087]  ? radeon_ttm_tt_create+0x36/0xa0 [radeon]
kern.info: [    2.424155]  ? put_cpu_partial+0x6d/0xb0
kern.info: [    2.424158]  ? ttm_resource_free+0x67/0x80 [ttm]
kern.info: [    2.424164]  ? kmem_cache_alloc_lru+0x1b4/0x3b0
kern.info: [    2.424167]  ? _raw_spin_unlock_irqrestore+0x20/0x40
kern.info: [    2.424170]  ? __wake_up_common_lock+0x8a/0xc0
kern.info: [    2.424173]  ? sysvec_apic_timer_interrupt+0xaf/0xd0
kern.info: [    2.424177]  ? sysvec_apic_timer_interrupt+0xaf/0xd0
kern.info: [    2.424179]  ? asm_sysvec_apic_timer_interrupt+0x16/0x20
kern.info: [    2.424183]  ? delay_tsc+0x4a/0xc0
kern.info: [    2.424187]  ? delay_tsc+0x42/0xc0
kern.info: [    2.424190]  ? rv770_set_uvd_clocks+0x27e/0x350 [radeon]
kern.info: [    2.424255]  ? uvd_v1_0_init+0x37/0x570 [radeon]
kern.info: [    2.424317]  ? rv770_startup+0xfce/0x1740 [radeon]
kern.info: [    2.424383]  ? rv770_init+0x259/0x2c0 [radeon]
kern.info: [    2.424448]  ? radeon_device_init+0x553/0xa10 [radeon]
kern.info: [    2.424502]  ? radeon_driver_load_kms+0xc8/0x260 [radeon]
kern.info: [    2.424556]  ? drm_dev_register+0xcc/0x1c0 [drm]
kern.info: [    2.424572]  ? radeon_pci_probe+0xc4/0x110 [radeon]
kern.info: [    2.424626]  ? local_pci_probe+0x45/0x80
kern.info: [    2.424628]  ? work_for_cpu_fn+0x16/0x20
kern.info: [    2.424631]  ? process_one_work+0x1e5/0x3b0
kern.info: [    2.424634]  ? worker_thread+0x1c4/0x3a0
kern.info: [    2.424636]  ? rescuer_thread+0x390/0x390
kern.info: [    2.424639]  ? kthread+0xe7/0x110
kern.info: [    2.424641]  ? kthread_complete_and_exit+0x20/0x20
kern.info: [    2.424644]  ? ret_from_fork+0x22/0x30
kern.info: [    2.424647]  </TASK>
```

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#### Local build testing
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[ci skip]


A patch file from https://github.com/void-linux/void-packages/pull/39023.patch is attached