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| author | Breno Leitao <leitao@debian.org> | 2025-03-06 16:16:18 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-03-08 06:57:33 +0300 |
| commit | 505ead7ab77f289f12d8a68ac83da068e4d4408b (patch) | |
| tree | 2adfcc0791444ce67dbd7288931a83e17ed8c960 /net/switchdev/switchdev.c | |
| parent | e6360f0dc52b93a723c748e281fb99b430297da4 (diff) | |
| download | linux-505ead7ab77f289f12d8a68ac83da068e4d4408b.tar.xz | |
netpoll: hold rcu read lock in __netpoll_send_skb()
The function __netpoll_send_skb() is being invoked without holding the
RCU read lock. This oversight triggers a warning message when
CONFIG_PROVE_RCU_LIST is enabled:
net/core/netpoll.c:330 suspicious rcu_dereference_check() usage!
netpoll_send_skb
netpoll_send_udp
write_ext_msg
console_flush_all
console_unlock
vprintk_emit
To prevent npinfo from disappearing unexpectedly, ensure that
__netpoll_send_skb() is protected with the RCU read lock.
Fixes: 2899656b494dcd1 ("netpoll: take rcu_read_lock_bh() in netpoll_send_skb_on_dev()")
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250306-netpoll_rcu_v2-v2-1-bc4f5c51742a@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/switchdev/switchdev.c')
0 files changed, 0 insertions, 0 deletions