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firmware: arm_ffa: Fix memory leak by freeing notifier callback node

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Commit e0573444ed ("firmware: arm_ffa: Add interfaces to request
notification callbacks") adds support for notifier callbacks by allocating
and inserting a callback node into a hashtable during registration of
notifiers. However, during unregistration, the code only removes the
node from the hashtable without freeing the associated memory, resulting
in a memory leak.

Resolve the memory leak issue by ensuring the allocated notifier callback
node is properly freed after it is removed from the hashtable entry.

Fixes: e0573444ed ("firmware: arm_ffa: Add interfaces to request notification callbacks")
Message-Id: <20250528-ffa_notif_fix-v1-1-5ed7bc7f8437@arm.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Sudeep Holla 2025-05-28 09:49:41 +01:00
parent 19272b37aa
commit a833d31ad8
1 changed files with 1 additions and 0 deletions
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1
drivers/firmware/arm_ffa/driver.c
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@ -1284,6 +1284,7 @@ update_notifier_cb(struct ffa_device *dev, int notify_id, void *cb,
hash_add(drv_info->notifier_hash, &cb_info->hnode, notify_id);
} else {
hash_del(&cb_info->hnode);
kfree(cb_info);
}
return 0;