How to use fs.fanotify.watchdog_timeout to diagnose unresponsive fanotify permission event listeners
Issue
- How do I enable the fanotify watchdog for permission events?
- How do I use
fs.fanotify.watchdog_timeoutto diagnose unresponsive fanotify permission listeners? - Which process is responsible for answering fanotify permission events?
- What does the "
failed to respond to fanotify queue for more than <N> seconds" message mean?
Environment
- Red Hat Enterprise Linux 10.2
- kernel-6.12.0-211.7.1.el10_2 or later
- Red Hat Enterprise Linux 9.8
- kernel-5.14.0-687.5.1.el9_8 or later
- Red Hat Enterprise Linux 8.10.z
- kernel-4.18.0-553.83.1.el8_10 or later
- sysctl parameter (
fs.fanotify.watchdog_timeout)
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