Files
linux-stable-mirror/include/linux
Breno Leitao d425e975c1 netpoll: Use rcu_access_pointer() in netpoll_poll_lock
[ Upstream commit a57d5a72f8 ]

The ndev->npinfo pointer in netpoll_poll_lock() is RCU-protected but is
being accessed directly for a NULL check. While no RCU read lock is held
in this context, we should still use proper RCU primitives for
consistency and correctness.

Replace the direct NULL check with rcu_access_pointer(), which is the
appropriate primitive when only checking for NULL without dereferencing
the pointer. This function provides the necessary ordering guarantees
without requiring RCU read-side protection.

Fixes: bea3348eef ("[NET]: Make NAPI polling independent of struct net_device objects.")
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Michal Kubiak <michal.kubiak@intel.com>
Link: https://patch.msgid.link/20241118-netpoll_rcu-v1-2-a1888dcb4a02@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-12-14 19:50:59 +01:00
..
2024-01-25 14:52:51 -08:00
2024-07-05 09:14:50 +02:00
2023-12-20 15:17:37 +01:00
2024-04-10 16:19:07 +02:00
2024-04-10 16:18:55 +02:00
2023-11-20 11:08:16 +01:00
2024-04-10 16:19:00 +02:00
2023-08-26 14:23:39 +02:00
2024-01-25 14:52:33 -08:00
2024-06-16 13:39:27 +02:00
2023-11-28 16:56:21 +00:00
2023-10-19 23:05:33 +02:00
2023-10-19 23:05:33 +02:00
2023-12-13 18:36:35 +01:00
2024-10-17 15:11:06 +02:00