From this webpage screenshot, we can extract the following key information about the vulnerability: 1. Vulnerability Description: - Vulnerability Type: netfilter: flowtable_offload: fix using __this_cpu_add in preemptible - Issue Description: In preemptible mode, when is called from a workqueue, if BH (bottom half) is disabled, calling causes an error. 2. Error Message: - - 3. Fix: - The issue is resolved by replacing with in . 4. Patch Information: - Patch Source: Upstream commit a81047154e7ce4eb8769d5d21adcb9693542a79 - Patch Author: Xin Long - Patch Status: Signed-off-by 5. Patch Content: - Modified the statistics counter call in from to . 6. Patch Impact: - Patch File: net/netfilter/nf_flow_table_offload.c - Patch Type: Modified the statistics counter call in the file. With this information, we understand that the patch fixes an error caused by improper use of the statistics counter in preemptible mode.