Re: IB/ipoib: fix dangling pointer reference to ipoib_neigh and ipoib_path -when will it go upstream?

[Pradeep Satyanarayana <pradeeps-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>]

Pradeep Satyanarayana wrote:
> Roland Dreier wrote:
>>  > I guess I came to a premature conclusion. One set of tests ran fine and I made that
>>  > conclusion. Another set of tests caused the following crash:
>>
>> I don't really know how to interpret this.  Is this crash new, or is it
>> the same crash you were hoping this patch fixed?
> 
> This is a new crash.

I see other manifestations resulting in different crashes :

:mon> t
[c00000074603ba20] d0000000193527ac .ipoib_neigh_flush+0x6c/0x350 [ib_ipoib]
[c00000074603bb10] d000000019356dac .ipoib_mcast_free+0x74/0x2a0 [ib_ipoib]
[c00000074603bbe0] d000000019358558 .ipoib_mcast_restart_task+0x3d0/0x560 [ib_ipoib]
[c00000074603bd40] c0000000000c6fe4 .run_workqueue+0xf4/0x1e0
[c00000074603be00] c0000000000c7190 .worker_thread+0xc0/0x180
[c00000074603bed0] c0000000000ccf4c .kthread+0xb4/0xc0
[c00000074603bf90] c0000000000309fc .kernel_thread+0x54/0x70
9:mon> e
cpu 0x9: Vector: 300 (Data Access) at [c00000074603b720]
    pc: c0000000005ac390: ._spin_lock+0x20/0xc8
    lr: d0000000193527ac: .ipoib_neigh_flush+0x6c/0x350 [ib_ipoib]
    sp: c00000074603b9a0
   msr: 8000000000009032
   dar: 3a0
 dsisr: 40000000
  current = 0xc000000756ce8b00
  paca    = 0xc000000000f63800
    pid   = 18095, comm = ipoib
9:mon>

Thanks
Pradeep

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