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Test your applicationsUpgrade github.com/rclone/rclone/vfs/vfscache/downloaders
to version 1.54.0 or higher.
github.com/rclone/rclone/vfs/vfscache/downloaders is a rsync for cloud storage.
Affected versions of this package are vulnerable to Deadlock. The downloaders.Close()
call acquires the downloaders' mutex before calling the wait group wait
and the main downloaders' thread has a periodical (5 seconds interval) call to kick its waiters, and the waiter dispatch function tries to get the mutex. A deadlock can occur if the Close()
call starts and gets the mutex, while the main downloader thread already got the timer's tick and proceeded to call kickWaiters
. The deadlock happens when the Close
call gets the mutex between the timer's kick and when the main downloaders' thread gets the mutex first.