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| author | Breno Leitao <[email protected]> | 2024-11-18 11:15:18 +0000 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2024-11-19 03:01:39 +0000 |
| commit | a57d5a72f8dec7db8a79d0016fb0a3bdecc82b56 (patch) | |
| tree | 8689e499621e0d7e495ef6ee3edb36dba7de1726 /tools/testing/selftests/bpf/prog_tests/sockmap_basic.c | |
| parent | netpoll: Use rcu_access_pointer() in __netpoll_setup (diff) | |
| download | kernel-a57d5a72f8dec7db8a79d0016fb0a3bdecc82b56.tar.gz kernel-a57d5a72f8dec7db8a79d0016fb0a3bdecc82b56.zip | |
netpoll: Use rcu_access_pointer() in netpoll_poll_lock
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: bea3348eef27 ("[NET]: Make NAPI polling independent of struct net_device objects.")
Signed-off-by: Breno Leitao <[email protected]>
Reviewed-by: Michal Kubiak <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/sockmap_basic.c')
0 files changed, 0 insertions, 0 deletions