Key Information Issue Description: - Calling within leads to refcount underflow and double-free issues when processing TFO (TCP Fast Open) sockets. Root Cause: - If the listening socket is closed while is handling a TFO socket, does not set , and proceeds to call , which in turn calls for the TFO socket. - In the referenced commit, invokes , which calls while is NULL. - Subsequent calls to decrement and trigger the label, leading to the freeing of , which causes refcount underflow and double-free of the listening socket. Solution: - Remove the call to from . Logs and Warnings: - Syzbot reported errors and warnings occurring within . - Reported issues include , , and associated warning logs. - Provided detailed information such as CPU, PID, .parents, Hardware, and call stack. Related Code: - Includes stack traces and other code details related to the error, aiding in locating and resolving the issue. (Specific code details are not shown in the screenshot but can be found in the full logs or source code.)