On 4/8/25 21:37, Jakub Kicinski wrote:
On Tue, 8 Apr 2025 11:28:54 +0200 Paolo Abeni wrote:
When napi_disable is called on an already disabled napi, it will sleep
in napi_disable_locked while still holding the netdev_lock. As a result,
later napi_enable gets stuck too as it cannot acquire the ne
On 4/9/25 13:44, Bui Quang Minh wrote:
On 4/8/25 14:34, Jason Wang wrote:
On Mon, Apr 7, 2025 at 10:27 AM Bui Quang Minh
wrote:
On 4/7/25 08:03, Xuan Zhuo wrote:
On Fri, 4 Apr 2025 16:39:03 +0700, Bui Quang Minh
wrote:
When pausing rx (e.g. set up xdp, xsk pool, rx resize), we call
napi_di
On 4/8/25 14:34, Jason Wang wrote:
On Mon, Apr 7, 2025 at 10:27 AM Bui Quang Minh wrote:
On 4/7/25 08:03, Xuan Zhuo wrote:
On Fri, 4 Apr 2025 16:39:03 +0700, Bui Quang Minh
wrote:
When pausing rx (e.g. set up xdp, xsk pool, rx resize), we call
napi_disable() on the receive queue's napi. In
On Tue, 8 Apr 2025 11:28:54 +0200 Paolo Abeni wrote:
> >> When napi_disable is called on an already disabled napi, it will sleep
> >> in napi_disable_locked while still holding the netdev_lock. As a result,
> >> later napi_enable gets stuck too as it cannot acquire the netdev_lock.
> >> This leads
On 4/8/25 9:34 AM, Jason Wang wrote:
> On Mon, Apr 7, 2025 at 10:27 AM Bui Quang Minh
> wrote:
>> On 4/7/25 08:03, Xuan Zhuo wrote:
>>> On Fri, 4 Apr 2025 16:39:03 +0700, Bui Quang Minh
>>> wrote:
When pausing rx (e.g. set up xdp, xsk pool, rx resize), we call
napi_disable() on the r
On Mon, Apr 7, 2025 at 10:27 AM Bui Quang Minh wrote:
>
> On 4/7/25 08:03, Xuan Zhuo wrote:
> > On Fri, 4 Apr 2025 16:39:03 +0700, Bui Quang Minh
> > wrote:
> >> When pausing rx (e.g. set up xdp, xsk pool, rx resize), we call
> >> napi_disable() on the receive queue's napi. In delayed refill_wo
On 4/7/25 08:03, Xuan Zhuo wrote:
On Fri, 4 Apr 2025 16:39:03 +0700, Bui Quang Minh
wrote:
When pausing rx (e.g. set up xdp, xsk pool, rx resize), we call
napi_disable() on the receive queue's napi. In delayed refill_work, it
also calls napi_disable() on the receive queue's napi. This can lea
On Fri, 4 Apr 2025 16:39:03 +0700, Bui Quang Minh
wrote:
> When pausing rx (e.g. set up xdp, xsk pool, rx resize), we call
> napi_disable() on the receive queue's napi. In delayed refill_work, it
> also calls napi_disable() on the receive queue's napi. This can leads to
> deadlock when napi_disa
When pausing rx (e.g. set up xdp, xsk pool, rx resize), we call
napi_disable() on the receive queue's napi. In delayed refill_work, it
also calls napi_disable() on the receive queue's napi. This can leads to
deadlock when napi_disable() is called on an already disabled napi. This
scenario can be re
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