[Fwd: Re: [openib-general] kernel oops]

[Viswanath Krishnamurthy]

The patch failed to fix the panic..

subnetmgr5 login: ib_at: ib_dev_ats_op: dev (c0449800) ib0 already has 
pending op 2
Unable to handle kernel NULL pointer dereference at virtual address 00000068
printing eip:
c02fee65
*pde = 365a7001
Oops: 0000 [#1]
SMP
Modules linked in: nfsd exportfs lockd autofs4 sunrpc uhci_hcd ehci_hcd 
hw_random e1000 ext3 jbd sd_mod
CPU: 0
EIP: 0060:[<c02fee65>] Not tainted VLI
EFLAGS: 00010086 (2.6.13)
EIP is at _spin_lock_irqsave+0xa/0x51
eax: 00000064 ebx: 00000286 ecx: f665de6c edx: c037bcd0
esi: 00000064 edi: 00000064 ebp: 00000000 esp: f665de00
ds: 007b es: 007b ss: 0068
Process lt-ucmpost (pid: 3749, threadinfo=f665c000 task=f6478020)
Stack: c01410ed 00000001 00000000 c037bcd0 c0272f87 00000000 000000d0 
f665deac
f67abe80 c027f14c c035ef80 c17f8ec0 f665de6c 0c300000 00000064 f665deac
f67abe80 c0284cfa 00000000 0c300000 00000064 000000d0 c02847b8 f67abe80
Call Trace:
[<c01410ed>] __alloc_pages+0x324/0x3f1
[<c0272f87>] ib_get_client_data+0x14/0x54
[<c027f14c>] ib_sa_path_rec_get+0x1b/0x138
[<c0284cfa>] resolve_path+0x8c/0x15b
[<c02847b8>] path_req_complete+0x0/0xf7
[<c02b510e>] rtnetlink_dump_all+0x0/0x9e
[<c02b525e>] rtnetlink_done+0x0/0x3
[<c02851b1>] ib_at_paths_by_route+0xf5/0x10f
[<c02842b3>] same_path_req+0x0/0x95
[<c0285cdd>] ib_uat_paths_by_route+0xef/0x1c4
[<c02b510e>] rtnetlink_dump_all+0x0/0x9e






> 
> 
> 
> ---------- Forwarded message ----------
> From: Sean Hefty <mshefty at ichips.intel.com>
> To: Hal Rosenstock <halr at voltaire.com>
> Date: Thu, 01 Sep 2005 09:04:37 -0700
> Subject: Re: [openib-general] kernel oops
> Hal Rosenstock wrote:
> > Here's a patch for this. Let me know if it works. [I tried it out and it
> > works for me.] If it does, the next question is how does the pointer get
> > trashed.
> 
> I don't think that the pointer is getting trashed. The SA was not running, 
> so I
> don't think that any route was returned.
> 
> - Sean
> 
> 
>
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