From: bugzilla@dpdk.org
To: dev@dpdk.org
Subject: [dpdk-dev] [Bug 662] Pthread_mutex usage is not safe between primar/secondary process
Date: Mon, 15 Mar 2021 19:22:28 +0000 [thread overview]
Message-ID: <bug-662-3@http.bugs.dpdk.org/> (raw)
https://bugs.dpdk.org/show_bug.cgi?id=662
Bug ID: 662
Summary: Pthread_mutex usage is not safe between
primar/secondary process
Product: DPDK
Version: 18.11
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: major
Priority: Normal
Component: core
Assignee: dev@dpdk.org
Reporter: stephen@networkplumber.org
Target Milestone: ---
Posix mutex's are by default private to the process creating them. Several
places in DPDK use pthread_mutex to protect resources in a manner that is not
safe when used with primary/secondary processes.
This problem was reported against failsafe driver, but it seems to be a wider
problem (assumptions in DPDK). Initial report was on 18.11, but these bugs go
back to original code in many cases.
Mutexes that are protecting data structures from multi-process model must call
pthread_setpshared().
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