From this webpage screenshot, we can extract the following key information about the vulnerability: 1. Vulnerability Description: - Issue Description: In the function, directly calling may cause sleeping during an RCU read-critical section. - Cause: The function directly calls within an RCU read-critical section, which may lead to sleeping. 2. Solution: - Use Workqueue: Avoid direct invocation of within RCU critical sections by using a workqueue. - Avoid Direct Call: When calling within an RCU critical section, there is no need to worry about VIF deletion, as will remove the VIF if the work has not started or has already completed. 3. Test Environment: - Test Device: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICON_LITE-3.6510.30 4. Patch Information: - Patch Location: , , - Patch Content: The patch code demonstrates how to use a workqueue to avoid direct calls to . 5. Patch Testing: - Test Device: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICON_LITE-3.6510.30 6. Vulnerability Fixed by Patch: - Vulnerability ID: 3a415daa3e8b - Vulnerability Description: In the function, directly calling may cause sleeping during an RCU read-critical section. 7. Patch Author: - Author: Kang Yang 8. Patch Status: - Status: Fixed This information helps us understand the vulnerability's background, the proposed solution, and the testing and remediation status of the patch.