From: bugzilla@dpdk.org
To: dev@dpdk.org
Subject: [Bug 1051] l2fwd-event: signal unsafe usage
Date: Mon, 11 Jul 2022 18:00:08 +0000 [thread overview]
Message-ID: <bug-1051-3@http.bugs.dpdk.org/> (raw)
https://bugs.dpdk.org/show_bug.cgi?id=1051
Bug ID: 1051
Summary: l2fwd-event: signal unsafe usage
Product: DPDK
Version: 21.11
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: minor
Priority: Normal
Component: examples
Assignee: dev@dpdk.org
Reporter: stephen@networkplumber.org
Target Milestone: ---
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.
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