[Linux-kernel-mentees] [PATCH] bpf: devmap: Pass lockdep expression to RCU lists

Daniel Borkmann daniel at iogearbox.net
Thu Jan 23 22:04:31 UTC 2020


On 1/23/20 6:18 PM, Amol Grover wrote:
> On Thu, Jan 23, 2020 at 05:34:38PM +0530, Amol Grover wrote:
>> head is traversed using hlist_for_each_entry_rcu outside an
>> RCU read-side critical section but under the protection
>> of dtab->index_lock.
>>
>> Hence, add corresponding lockdep expression to silence false-positive
>> lockdep warnings, and harden RCU lists.
>>
> Fixes: 6f9d451ab1a3 ("xdp: Add devmap_hash map type for looking up devices by hashed index")
>> Signed-off-by: Amol Grover <frextrite at gmail.com>

Applied, thanks!


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