Linux F2FS f2fs_fsync_node_pages Race Condition Deadlock Analysis

Vulnerability Summary Vulnerability Overview Vulnerability Type: Potential deadlock caused by a race condition Affected File: Issue Description: In the function, a deadlock occurs if consistently returns false after has set the flag to true. Impact Scope Affected Component: function in the F2FS filesystem Trigger Condition: Under a race condition, where returns false and has set the flag to true Remediation Fix Method: Set only for Fix Commit: commit POC/Exploit Code ```c // Post-fix code snippet f2fs_debug(1, "f2fs_fsync_node_pages: - f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs truncate blocks f2fs t

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Linux F2FS f2fs_fsync_node_pages Race Condition Deadlock Analysis