Re: [PATCH net 0/5] pull request: fixes for ovpn 2026-05-14

[Paolo Abeni <pabeni@redhat.com>]

On 5/15/26 1:15 AM, Antonio Quartulli wrote:
> Hello netdev team,
> 
> This batch includes a few fixes for net. Specifically:
> 
> Patch 1 fixes the remaining of the selftests in order to avoid
> TCP failures on slow kernels, where pings cannot be always
> delivered on time.
> 
> Patch 2 fixes a RCU deref outside of the RCU read critical area.
> 
> Patch 3 fixes a potential UAF in case of a TCP peer that fails
> to be added to the hash table, while being fully initialized.
> In this scenario, potentially ongoing TCP socket syscalls would
> attempt accessing a free'd peer.
> 
> Patch 4 fixes a race condition betwen interface teardown and a
> new peer being added via netlink. The race condition would lead
> to the "ghost peer" endlessly holding the netdev while the core
> is waiting for it to be released.
> 
> Patch 5 fixes dev dstats updates by ensuring they are always
> performed with BH disabled, to avoid concurrent updates on the
> same CPU.
> 
> Please pull or let me know of any issue.

LGTM, but sashiko idendified a number of pre-existing issue that could
deserve some follow-up:

https://sashiko.dev/#/patchset/20260514231544.795993-1-antonio%40openvpn.net

/P