Bug 1051

Summary: l2fwd-event: signal unsafe usage
Product: DPDK Reporter: Stephen Hemminger (stephen)
Component: examplesAssignee: dev
Status: UNCONFIRMED ---    
Severity: minor    
Priority: Normal    
Version: 21.11   
Target Milestone: ---   
Hardware: All   
OS: All   

Description Stephen Hemminger 2022-07-11 20:00:08 CEST 
The signal_handler in l2fwd-event uses several functions that are not async-signal-safe.

The call to rte_mempool_lookup() in signal_handler could deadlock if interrupted during another lookup.

Also updating variable in signal handler should use __atomic_store

This is not a bug found by inspection. In practice the code is safe.
But examples are used by users to build applications, should be following best practices.