Hey, Is it easy for you to replicate this problem and if so would it be possible to run with a patch that spits out some extra debugging info?
It is easy for me to replicate with the Oracle linux kernel, but when I add debugging it seems to move around or become difficult to hit. On 06/27/2013 04:54 AM, Alex Lyakas wrote: > Hello Mike, > thank you for responding to my bug report. > Here is the information you asked for: > > This issue happened within a virtual machine. The network interface, > that is used for iscsi within the VM is a SR-IOV Virtual Function. The > VM runs a stock ixgbevf driver from 3.8.13 mainline kernel. On the > physical machine, the Virtual Function is spawned out of Intel 82599EB > card. The ixgbe driver for the Intel card on the physical machine is > 3.11.33. The physical machine runs stock Ubuntu Precise kernel > "3.2.0-29-generic #46-Ubuntu", while the VM runs mainline 3.8.13 kernel. > From within the VM, we connect to targets that live both on the same > physical machine and on other physical machines. > > I am attaching a .config file for the VM kernel. We did not build the > kernel ourselves, this is a mainline build done by Ubunti here: > http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8.13-raring/ > I am also attaching the full kernel log with the information about the > crash, it has more stack traces. > > The iscsiadm commands that we use (from another application via > fork()/exec()) are: > iscsiadm --mode node --portal <portal> --targetname <name> --op new > iscsiadm --mode node --portal <portal> --targetname <name> --login > iscsiadm --mode node --portal <portal> --targetname <name> --logout > iscsiadm --mode node [--print <level>] > iscsiadm --mode session [--print <level>] > iscsiadm --mode host [--print <level>] > > Occasionally we also read sysfs attributes, with a script that collects > all system's sysfs entries for further analysis. > > We use version 2.0-871 of open-iscsi, we install them via apt-get: > dpkg -l: > ii open-iscsi 2.0.871-0ubuntu9.12.04.1 > High performance, transport independent iSCSI implementation > ii open-iscsi-utils 2.0.871-0ubuntu9.12.04.1 > iSCSI initiatior administrative utility > > We open one session to each target, but we connect to multiple targets. > > Please let me know if any other info is needed. > > Thanks for your help, > Alex. > > > -----Original Message----- From: Mike Christie > Sent: 27 June, 2013 10:13 AM > To: [email protected] > Cc: Alex Lyakas > Subject: Re: NULL pointer deref in iscsi_sw_tcp_host_get_param > > On 06/26/2013 07:50 PM, Mike Christie wrote: >> On 06/26/2013 05:27 PM, Mike Christie wrote: >>> We have not seen it before. I am not seeing it here. >> >> Oh wait, I can hit it when using bnx2i and the OEL kernel >> 2.6.39-400.17.1.el6uek.x86_64 kernel. I do not hit it with iscsi_tcp >> though. Have not tried other upstream kernels with offload yet. >> > > Huh. I tried upstream 2.6.39 to 3.8 and also 3.8.10 and could not hit > the problem. I only hit it with that OEL kernel when using bnx2x. Also I > hit the oops in a slightly different place. > -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/open-iscsi. For more options, visit https://groups.google.com/groups/opt_out.
