https://www.kernel.org/doc/html/latest/RCU/stallwarn.html# #OlimexA20OlinuxinoMicro After 20 days uptime, driver st_gmac is still working but:
```
sudo dmesg -H -x | grep ':err .* INFO: rcu_sched self-detected stall on CPU' | wc -l # 59
stmmac_get_stats64 [stmmac] from dev_get_stats+0x44/0x13c
Linux version 6.1.0-44-armmp-lpae ([email protected]) (gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40) #1 SMP Debian 6.1.164-1 (2026-03-09)
```














