In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: read txq->read_ptr under lock If we read txq->read_ptr without lock, we can read the same value twice, then obtain the lock, and reclaim from there to two different places, but crucially reclaim the same entry twice, resulting in the WARN_ONCE() a little later. Fix that by reading txq->read_ptr under lock.
https://git.kernel.org/stable/c/f30e8af109818c9db08cbcc46eb9713fe4b530ba
https://git.kernel.org/stable/c/c2ace6300600c634553657785dfe5ea0ed688ac2
https://git.kernel.org/stable/c/b83db8e756dec68a950ed2f056248b1704b3deaa
https://git.kernel.org/stable/c/aab7b39fcac5f6165f6434bcbb56bb7865d4ad2b
https://git.kernel.org/stable/c/43d07103df670484cdd26f9588eabef80f69db89