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Date: Thu, 28 Sep 2006 13:34:55 -0700
From: Bryce Harrington <bryce@osdl.org>
To: linux-kernel@vger.kernel.org
Subject: Re: [Eng] [OOPS] -git8, 9:  NULL pointer dereference in mptspi_dv_renegotiate_work
Message-ID: <20060928203455.GP12968@osdl.org>
References: <20060928202548.GO12968@osdl.org>
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Just checked against latest -git10, same oops:

   http://crucible.osdl.org/runs/2256/sysinfo/amd01.console

However, it is not occurring on our ita64, x86, or x86_64 systems
running the same kernels.

Bryce

On Thu, Sep 28, 2006 at 01:25:48PM -0700, Bryce Harrington wrote:
> Apologies if this has already been reported; I didn't spot it on the
> list.  We've noticed an Oops on AMD64 when running linux-2.6.18-git8 and
> -git9, but not -git7:
> 
>  mptbase: Initiating ioc0 recovery
>  Unable to handle kernel NULL pointer dereference at 0000000000000500 RIP: 
>   [<ffffffff80489aa2>] mptspi_dv_renegotiate_work+0xc/0x45
>  PGD 0 
>  Oops: 0000 [1] PREEMPT SMP 
>  CPU 0 
>  Modules linked in:
>  Pid: 8, comm: events/0 Not tainted 2.6.18-git8 #1
>  RIP: 0010:[<ffffffff80489aa2>]  [<ffffffff80489aa2>] mptspi_dv_renegotiate_work+0xc/0x45
>  RSP: 0000:ffff81003ec65e40  EFLAGS: 00010282
>  RAX: 0000000000000002 RBX: ffff81003e86f640 RCX: 000000000000001e
>  RDX: 0000000000000001 RSI: 0000000000000213 RDI: 000000000003e86f
>  RBP: 0000000000000500 R08: ffff81003ec64000 R09: ffff81003ed0cf40
>  R10: ffff81003e86f640 R11: ffff81003ed0cf40 R12: ffff81003ed0cf40
>  R13: 0000000000000213 R14: ffff81003e86f640 R15: ffffffff80489a96
>  FS:  0000000000000000(0000) GS:ffffffff80779000(0000) knlGS:0000000000000000
>  CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
>  CR2: 0000000000000500 CR3: 0000000000201000 CR4: 00000000000006e0
>  Process events/0 (pid: 8, threadinfo ffff81003ec64000, task ffff81007f180740)
>  Stack:  ffff81003ec65ef8 ffff81003e86f640 ffff81003e86f648 ffffffff8023f1bd
>   ffff81003ed0cf40 ffff81003ed0cf40 ffffffff8023f204 ffff8100016dfd70
>   00000000fffffffc ffffffff80593ffd 0000000000000000 ffffffff8023f300
>  Call Trace:
>   [<ffffffff8023f1bd>] run_workqueue+0x9a/0xe1
>   [<ffffffff8023f204>] worker_thread+0x0/0x12e
>   [<ffffffff8023f300>] worker_thread+0xfc/0x12e
>   [<ffffffff80229f62>] default_wake_function+0x0/0xe
>   [<ffffffff80229f62>] default_wake_function+0x0/0xe
>   [<ffffffff80242433>] kthread+0xc8/0xf1
>   [<ffffffff8020a3f8>] child_rip+0xa/0x12
>   [<ffffffff8024236b>] kthread+0x0/0xf1
>   [<ffffffff8020a3ee>] child_rip+0x0/0x12
>  
>  
>  Code: 48 8b 45 00 31 f6 48 8b b8 50 01 00 00 e8 5c 4d fe ff 48 85 
>  RIP  [<ffffffff80489aa2>] mptspi_dv_renegotiate_work+0xc/0x45
>   RSP <ffff81003ec65e40>
>  CR2: 0000000000000500
>   <6>mptbase: Initiating ioc0 recovery
> 
> Full console logs showing the above oops are here:
> -git7:   ok   http://crucible.osdl.org/runs/2223/sysinfo/amd01.console
> -git8:  Oops  http://crucible.osdl.org/runs/2233/sysinfo/amd01.console
> -git9:  Oops  http://crucible.osdl.org/runs/2241/sysinfo/amd01.console
> 
> Reference information about the machine this is run on:
>     http://crucible.osdl.org/runs/2223/sysinfo/amd01.1/
> 
> Config files:
> -git7:  http://crucible.osdl.org/runs/2223/sysinfo/amd01.config
> -git8:  http://crucible.osdl.org/runs/2233/sysinfo/amd01.config
> 
> Bryce
> _______________________________________________
> Eng mailing list
> Eng@lists.osdl.org
> https://lists.osdl.org/mailman/listinfo/eng
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