rising3월 18일· 2 sources
A tale about fixing eBPF spinlock issues in the Linux kernel
Linux 커널의 eBPF spinlock 문제를 해결한 이야기
Why it matters
The Superluminal CPU profiler team encountered periodic full system freezes on Linux during captures. Debugging revealed that the NMI handler (perf_event_nmi_handler) was taking 250+ ms, pointing to spinlock issues deep in the Linux kernel's eBPF subsystem. The investigation led to finding and fixing multiple kernel-level bugs.
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ebpflinux kernelnmi handlerpatchspinlocksuperluminal오픈소스 기여