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authorLuiz Augusto von Dentz <luiz.von.dentz@intel.com>2024-12-04 11:40:59 -0500
committerLuiz Augusto von Dentz <luiz.von.dentz@intel.com>2024-12-12 09:23:49 -0500
commit581dd2dc168fe0ed2a7a5534a724f0d3751c93ae (patch)
tree074ddd939c6dae6e1aba5a2f599fdfab1272ed72 /tools/perf/scripts/python/parallel-perf.py
parent4d94f05558271654670d18c26c912da0c1c15549 (diff)
Bluetooth: hci_event: Fix using rcu_read_(un)lock while iterating
The usage of rcu_read_(un)lock while inside list_for_each_entry_rcu is not safe since for the most part entries fetched this way shall be treated as rcu_dereference: Note that the value returned by rcu_dereference() is valid only within the enclosing RCU read-side critical section [1]_. For example, the following is **not** legal:: rcu_read_lock(); p = rcu_dereference(head.next); rcu_read_unlock(); x = p->address; /* BUG!!! */ rcu_read_lock(); y = p->data; /* BUG!!! */ rcu_read_unlock(); Fixes: a0bfde167b50 ("Bluetooth: ISO: Add support for connecting multiple BISes") Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
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