From this webpage screenshot, the following key information about the vulnerability can be obtained: 1. Vulnerability Description: - Issue: When using DAX (Direct Access), if the written block size exceeds the inode size, it may cause to fail. - Cause: The function performs two operations in each iteration: mapping the written block and copying user data to the block. If the process is interrupted by a user signal during writing, the copied data is returned and added to the inode size, potentially causing the written block size to exceed the inode size. 2. Mitigation Measures: - Solution: Check during writing whether the written length is less than the expected inode size; if so, truncate the block. - Code Changes: - A new function was added to clean up the inode after DAX write operations. - The function was modified to ensure that is called after write operations. 3. Patch Details: - Patch Location: In the file . - Patch Content: Added new function calls and conditional checks to ensure proper inode handling after write operations. 4. Patch Status: - Status: Submitted to the kernel code repository. - Author: Zhihao Cheng. - Reviewers: Jan Kara, Zhihao Cheng, Theodore Ts'o, and Greg Kroah-Hartman. 5. Related Links: - Bugzilla Link: Link to track and discuss the issue in Bugzilla. - Code Links: Links to the original and modified code. This information indicates that the vulnerability is related to DAX write operations. By checking and handling inode size during writing, failures can be prevented.