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| author | Jamal Hadi Salim <jhs@mojatatu.com> | 2026-06-30 11:09:22 -0400 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2026-07-03 16:02:38 +0200 |
| commit | 6301f6a34ed86fe6f3b7b3211ea069f3677fc559 (patch) | |
| tree | e3dbba3ea0b07dda49f29a7751042efcb2904e20 /rust/zerocopy/src/pointer/git@git.tavy.me:linux-stable.git | |
| parent | d335dcc6f521571d57117b8deeebc940836e5450 (diff) | |
net/sched: sch_teql: move rcu_read_lock()/spin_lock() from _bh variants
This is a followup based on sashiko comments [1] on commit e5b811fe7931
("net/sched: sch_teql: Introduce slaves_lock to avoid race condition and UAF")
Use plain rcu_read_lock()/spin_lock() in teql_master_xmit() instead of the
_bh variants, since ndo_start_xmit is already invoked with BH disabled
by the core stack and the _bh primitives can warn in_hardirq() when xmit
is reached through netpoll or a softirq xmit path with hard IRQs disabled.
Moves rcu_read_lock() after restart: label + adds rcu_read_unlock() before
goto restart (fixes the unbounded RCU hold across retries)
[1] https://sashiko.dev/#/patchset/20260628111229.669751-1-jhs%40mojatatu.com
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Fixes: e5b811fe7931 ("net/sched: sch_teql: Introduce slaves_lock to avoid race condition and UAF")
Link: https://patch.msgid.link/20260630150922.238714-1-jhs@mojatatu.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'rust/zerocopy/src/pointer/git@git.tavy.me:linux-stable.git')
0 files changed, 0 insertions, 0 deletions