ACK: [SRU][J:linux-bluefield][PATCH 0/1] net/sched: flower: Add lock protection when remove filter handle

[Bartlomiej Zolnierkiewicz]

[ reply to 0/1 email this time ]

Acked-by: Bartlomiej Zolnierkiewicz <bartlomiej.zolnierkiewicz at canonical.com>

On Tue, Feb 27, 2024 at 12:04 AM William Tu <witu at nvidia.com> wrote:
>
> BugLink: https://bugs.launchpad.net/bugs/2055052
>
> * intro
> As IDR can't protect itself from the concurrent modification, place
> idr_remove() under the protection of tp->lock.
>
> * how to fix
> need to backport the patch from Jianbo
> "net/sched: flower: Add lock protection when remove filter handle"
> https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=1fde0ca3a0de7e9f917668941156959dd5e9108b
>
> * reproduce and verification
> It's hard to reproduce because it is a race condition we found in k8s+ovn deployment.
>
>
> Jianbo Liu (1):
>   net/sched: flower: Add lock protection when remove filter handle
>
>  net/sched/cls_flower.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
>