[ofa-general] Trouble with IPoIB stack ?

[Bart Van Assche]

> On Tue, 2008-06-10 at 15:32 +0200, Bart Van Assche wrote:
>> While running a stress test of Linux' iSCSI initiator I noticed that
>> the test ran fine over an Ethernet network but that strange memory
>> allocation problems were reported after I switched from Ethernet to
>> IPoIB. A few minutes later the whole system froze. Anyone any hints on
>> how I can pinpoint the cause of this issue ?
>>
>> >From the kernel messages:
>>
>> ...
>> [  552.238283] scsi_wq_25: page allocation failure. order:0, mode:0x20
>> [  551.878249] scsi_wq_39: page allocation failure. order:0, mode:0x20
>> ...
>> [  553.369853] Call Trace:
>> [  551.878264] Pid: 7860, comm: scsi_wq_39 Not tainted 2.6.25.6 #3
>> [  552.958273] Pid: 7761, comm: scsi_wq_36 Not tainted 2.6.25.6 #3
>> [  553.369866]  [__alloc_pages+0x2e8/0x3d0] __alloc_pages+0x2e8/0x3d0
>> [  552.418332]  [__alloc_pages+0x2e8/0x3d0] __alloc_pages+0x2e8/0x3d0
>> [  553.369875]  [ib_ipoib:dev_queue_xmit+0xed/0xb410] dev_queue_xmit+0xed/0x380
>> [  552.418343]  [new_slab+0x22d/0x2b0] new_slab+0x22d/0x2b0
>> [  552.418349]  [__slab_alloc+0x1f5/0x4c0] __slab_alloc+0x1f5/0x4c0
>> [  553.369894]  [new_slab+0x22d/0x2b0] new_slab+0x22d/0x2b0
>> [  552.778357] Pid: 7306, comm: scsi_wq_23 Not tainted 2.6.25.6 #3
>> ...
>>
>> See also http://bugzilla.kernel.org/show_bug.cgi?id=10890.

On Tue, Jun 10, 2008 at 4:57 PM, Eli Cohen <eli at dev.mellanox.co.il> wrote:
> Does your system respond to ping (over the Eth interface)?
>
> It appears like you have a memory leak. Can you send more output and
> also send more details how to reproduce this?

Hello Eli,

I will repeat the test such that I can test whether the system still
responds to ping on the Ethernet interface.

Regarding the kernel logs and how to reproduce this issue: this
information is present as attachments in
http://bugzilla.kernel.org/show_bug.cgi?id=10890.

Please let me know if you need more information.

Bart.