On Wed, May 29, 2024 at 8:53 AM Amery Hung <ameryhung@xxxxxxxxx> wrote: > > Hello, > > We are developing a tool to perform static analysis on the bpf > subsystem to detect locking violations. Our tool reported the > spin_lock_irqsave() in trie_delete_elem() and trie_update_elem() that > could be called from an NMI. If a bpf program holding the lock is > interrupted by the same program in NMI, a deadlock can happen. The > report was generated for kernel version 6.6-rc4, however, we believe > this should still exist in the latest kernel. Fix it similar to https://lore.kernel.org/all/20230911132815.717240-1-toke@xxxxxxxxxx/ ?
