From: bugzilla@dpdk.org
To: dev@dpdk.org
Subject: [Bug 1215] Hotplug sigbus handler is using signal unsafe calls
Date: Thu, 13 Apr 2023 02:34:36 +0000 [thread overview]
Message-ID: <bug-1215-3@http.bugs.dpdk.org/> (raw)
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https://bugs.dpdk.org/show_bug.cgi?id=1215
Bug ID: 1215
Summary: Hotplug sigbus handler is using signal unsafe calls
Product: DPDK
Version: unspecified
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: minor
Priority: Normal
Component: core
Assignee: dev@dpdk.org
Reporter: stephen@networkplumber.org
Target Milestone: ---
The sigbus_handler() in lib/eal/linux/eal_dev.c is using many direct library
calls and DPDK API's that are not safe to be used in a signal handler.
Unsafe routines include RTE_LOG() uses sprintf and syslog. etc..
It is also possible that failure_handle_lock could deadlock if called during a
change of state by other thread.
The safer way would be to use signalfd() and a monitoring thread.
Handling signals in Linux and BSD is hard.
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reply other threads:[~2023-04-13 2:34 UTC|newest]
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