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Date: Fri, 7 Apr 2017 10:08:23 +0530 From: Sachin Sant <sachinp@...ux.vnet.ibm.com> To: Tyrel Datwyler <tyreld@...ux.vnet.ibm.com> Cc: linuxppc-dev@...abs.org, "nfont >> Nathan Fontenot" <nfont@...ux.vnet.ibm.com>, LKML <linux-kernel@...r.kernel.org> Subject: Re: WARN @lib/refcount.c:128 during hot unplug of I/O adapter. > On 07-Apr-2017, at 2:14 AM, Tyrel Datwyler <tyreld@...ux.vnet.ibm.com> wrote: > > On 04/06/2017 03:27 AM, Sachin Sant wrote: >> On a POWER8 LPAR running 4.11.0-rc5, a hot unplug operation on >> any I/O adapter results in the following warning > > I remember you mentioning this when the issue was brought up for CPUs. I > assume the case is the same here where the issue is only seen with > adapters that were hot-added after boot (ie. hot-remove of adapter > present at boot doesn't trip the warning)? > Correct, can be recreated only with adapters that were hot-added after boot. > -Tyrel > >> >> Thanks >> -Sachin >> >> >
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