From: Thomas Monjalon <thomas@monjalon.net>
To: David Marchand <david.marchand@redhat.com>
Cc: dev@dpdk.org, bruce.richardson@intel.com, solal.pirelli@gmail.com
Subject: Re: [dpdk-dev] [PATCH] eal: fix out of bound access when no cpu is available
Date: Thu, 17 Jan 2019 17:34:01 +0100 [thread overview]
Message-ID: <3463567.oezzxnnWpT@xps> (raw)
In-Reply-To: <1547730777-20405-1-git-send-email-david.marchand@redhat.com>
17/01/2019 14:12, David Marchand:
> In the unlikely case when the dpdk application is started with no cpu
> available in the [0, RTE_MAX_LCORE - 1] range, the master_lcore is
> automatically chosen as RTE_MAX_LCORE which triggers an out of bound
> access.
>
> Either you have a crash then, or the initialisation fails later when
> trying to pin the master thread on it.
> In my test, with RTE_MAX_LCORE == 2:
>
> $ taskset -c 2 ./master/app/testpmd --no-huge -m 512 --log-level *:debug
> [...]
> EAL: pthread_setaffinity_np failed
> PANIC in eal_thread_init_master():
> cannot set affinity
> 7: [./master/app/testpmd() [0x47f629]]
>
> Bugzilla ID: 19
> Signed-off-by: David Marchand <david.marchand@redhat.com>
We should backport this fix.
When this bug has been introduced?
next prev parent reply other threads:[~2019-01-17 16:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-17 13:12 David Marchand
2019-01-17 16:34 ` Thomas Monjalon [this message]
2019-01-17 17:17 ` David Marchand
2019-01-17 17:38 ` Thomas Monjalon
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