On Mon, 21 Nov 2022 18:05:21 +0800 xiangxia.m.yue@xxxxxxxxx wrote:
> From: Tonghao Zhang <xiangxia.m.yue@xxxxxxxxx>
>
> The commit 20b6cc34ea74 ("bpf: Avoid hashtab deadlock with map_locked"),
> try to fix deadlock, but in some case, the deadlock occurs:
>
> * CPUn in task context with K1, and taking lock.
> * CPUn interrupted by NMI context, with K2.
> * They are using the same bucket, but different map_locked.
You should really put bpf@ in the CC line for bpf patches.
