Hello Joel.
On 10.03.23 02:31, Joel Fernandes (Google) wrote:
The k[v]free_rcu() macro's single-argument form is deprecated.
Therefore switch to the new k[v]free_rcu_mightsleep() variant. The goal
is to avoid accidental use of the single-argument forms, which can
introduce functionality bugs in atomic contexts and latency bugs in
non-atomic contexts.
The callers are holding a mutex so the context allows blocking. Hence
using the API with a single argument will be fine, but use its new name.
There is no functionality change with this patch.
Fixes: 57588c71177f ("mac802154: Handle passive scanning")
Signed-off-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>
---
Please Ack the patch but we can carry it through the RCU tree as well if
needed, as it is not a bug per-se and we are not dropping the old API before
the next release.
The "but we can carry it" part throws me off here. Not sure if you want
this through the RCU tree (I suppose). In that case see my ack below.
If you want me to take it through my wpan tree instead let me know.
net/mac802154/scan.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/mac802154/scan.c b/net/mac802154/scan.c
index 9b0933a185eb..5c191bedd72c 100644
--- a/net/mac802154/scan.c
+++ b/net/mac802154/scan.c
@@ -52,7 +52,7 @@ static int mac802154_scan_cleanup_locked(struct ieee802154_local *local,
request = rcu_replace_pointer(local->scan_req, NULL, 1);
if (!request)
return 0;
- kfree_rcu(request);
+ kvfree_rcu_mightsleep(request);
/* Advertize first, while we know the devices cannot be removed */
if (aborted)
@@ -403,7 +403,7 @@ int mac802154_stop_beacons_locked(struct ieee802154_local *local,
request = rcu_replace_pointer(local->beacon_req, NULL, 1);
if (!request)
return 0;
- kfree_rcu(request);
+ kvfree_rcu_mightsleep(request);
nl802154_beaconing_done(wpan_dev);
Acked-by: Stefan Schmidt <stefan@xxxxxxxxxxxxxxxxxx>
regards
Stefan Schmidt
