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| author |   Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2024-12-04 11:40:59 -0500 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2024-12-12 09:23:49 -0500 |
| commit | 581dd2dc168fe0ed2a7a5534a724f0d3751c93ae (patch) | |
| tree | 074ddd939c6dae6e1aba5a2f599fdfab1272ed72 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | Bluetooth: hci_core: Fix sleeping function called from invalid context (diff) | |
| download | wireguard-linux-581dd2dc168fe0ed2a7a5534a724f0d3751c93ae.tar.xz wireguard-linux-581dd2dc168fe0ed2a7a5534a724f0d3751c93ae.zip | |
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>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions