From: bugzilla@dpdk.org
To: dev@dpdk.org
Subject: [dpdk-dev] [Bug 18] mmap with MAP_ANONYMOUS should have fd == -1
Date: Sun, 01 Apr 2018 12:21:54 +0000 [thread overview]
Message-ID: <bug-18-3@http.dpdk.org/tracker/> (raw)
https://dpdk.org/tracker/show_bug.cgi?id=18
Bug ID: 18
Summary: mmap with MAP_ANONYMOUS should have fd == -1
Product: DPDK
Version: unspecified
Hardware: All
OS: Linux
Status: CONFIRMED
Severity: minor
Priority: Normal
Component: core
Assignee: dev@dpdk.org
Reporter: solal.pirelli@gmail.com
Target Milestone: ---
In the Linux version of eal_memory.c, if hugepages are disabled, a memory-map
is performed with the MAP_ANONYMOUS flag
(http://dpdk.org/browse/dpdk/tree/lib/librte_eal/linuxapp/eal/eal_memory.c?h=v18.02#n1013).
According to the man page for mmap
(http://man7.org/linux/man-pages/man2/mmap.2.html), the fd argument should be
set to -1 if MAP_ANONYMOUS is used, and not 0 as it currently is.
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