netdev - Re: [PATCH] ibmvnic: driver initialization for kdump/kexec

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20170616.152138.1813416619974791339.davem@davemloft.net>
Date:   Fri, 16 Jun 2017 15:21:38 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     nfont@...ux.vnet.ibm.com
Cc:     netdev@...r.kernel.org, jallen@...ux.vnet.ibm.com,
        tlfalcon@...ux.vnet.ibm.com
Subject: Re: [PATCH] ibmvnic: driver initialization for kdump/kexec

From: Nathan Fontenot <nfont@...ux.vnet.ibm.com>
Date: Thu, 15 Jun 2017 14:48:09 -0400

> When booting into the kdump/kexec kernel, pHyp and vios
> are not prepared for the initialization crq request and
> a failover transport event is generated. This is not
> handled correctly.
> 
> At this point in initialization the driver is still in
> the 'probing' state and cannot handle a full reset of the
> driver as is normally done for a failover transport event.
> 
> To correct this we catch driver resets while still in the
> 'probing' state and return EAGAIN. This results in the
> driver tearing down the main crq and calling ibmvnic_init()
> again.
> 
> Signed-off-by: Nathan Fontenot <nfont@...ux.vnet.ibm.com>

Applied to net-next.