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libertas: don't exit from lbs_ibss_join_existing() with RCU read lock…
… held [ Upstream commit c7bf1fb7ddca331780b9a733ae308737b39f1ad4 ] Commit e5e884b42639 ("libertas: Fix two buffer overflows at parsing bss descriptor") introduced a bounds check on the number of supplied rates to lbs_ibss_join_existing(). Unfortunately, it introduced a return path from within a RCU read side critical section without a corresponding rcu_read_unlock(). Fix this. Fixes: e5e884b42639 ("libertas: Fix two buffer overflows at parsing bss descriptor") Signed-off-by: Nicolai Stange <nstange@suse.de> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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