netdev - Re: [-next Nov 25] eHEA driver failure during boot(bisected)

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Date:	Tue, 01 Dec 2009 10:31:03 +0530
From:	Sachin Sant <sachinp@...ibm.com>
To:	Jan-Bernd Themann <ossthema@...ibm.com>
CC:	netdev <netdev@...r.kernel.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, Jan-Bernd Themann <THEMANN@...ibm.com>,
	HERING2@...ibm.com, David Miller <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [-next Nov 25] eHEA driver failure during boot(bisected)

Jan-Bernd Themann wrote:
> Hi Sachin,
>
> thanks for the information. I tried to reproduce it on our machine, 
> but when I "insmod" the module, I don't hit this problem with the code 
> from latest -next git head.
> What compiler and which .config did you use? Any special options enabled?
Have attached the config used. I have been able to recreate this
problem on only one out of three POWER6 boxes.

gcc version is :
gcc version 4.3.2 [gcc-4_3-branch revision 141291] (SUSE Linux)

Thanks
-Sachin

>
> Thanks,
> Jan-Bernd
>
> Sachin Sant schrieb:
>> eHEA driver fails to initialize on a power6 box while booting
>> latest next. Following are the messages which gets
>> logged during failure (this is with 20091125 next(f3645ca..))
>>
>> Unable to handle kernel paging request for data at address 
>> 0x409d0148e8e40018
>> Faulting instruction address: 0xc00000000003c0cc
>> Oops: Kernel access of bad area, sig: 11 [#1]
>> SMP NR_CPUS=1024 NUMA pSeries
>> Modules linked in: fuse loop dm_mod sr_mod cdrom ehea sg sd_mod 
>> crc_t10dif ibmvscsic scsi_transport_srp scsi_tgt scsi_mod
>> NIP: c00000000003c0cc LR: c00000000003ce50 CTR: 0000000000091b94
>> REGS: c00000000cade820 TRAP: 0300   Not tainted  
>> (2.6.32-rc8-autotest-next-20091125)
>> MSR: 8000000000001032 <ME,IR,DR>  CR: 28020424  XER: 00000020
>> DAR: 409d0148e8e40018, DSISR: 0000000040000000
>> TASK = c00000000c818d60[1683] 'ip' THREAD: c00000000cadc000 CPU: 1
>> GPR00: 0000000000000010 c00000000cadeaa0 c000000000b28340 
>> 409d0148e8e40008
>> GPR04: d00008008000f040 c00000000cadeb20 0000000000001000 
>> 0000000000000000
>> GPR08: 000000000000001c c0000000018c0398 0000000000000000 
>> c000000000bc0000
>> GPR12: 8000000000009032 c000000000bc2880 00000000ffffffff 
>> ffffffffffffffff
>> GPR16: 00000000203c8fc0 c00000000cadf4a8 c00000000cadf450 
>> c00000000e4c0000
>> GPR20: 0000000000000300 0000000000000201 c000000000c68590 
>> c000000000bc0000
>> GPR24: 0000000000000000 0000000000e5f87e 0000000000000001 
>> c000000009920000
>> GPR28: 0000000000000000 d00008008000f040 0000000000000000 
>> c000000000a63328
>> NIP [c00000000003c0cc] .subpage_protection+0x48/0x8c
>> LR [c00000000003ce50] .hash_page+0x3e0/0x45c
>> Call Trace:
>> [c00000000cadeaa0] [00000000ffffffff] 0xffffffff (unreliable)
>> [c00000000cadeb90] [c0000000000055d0] .do_hash_page+0x50/0x6c
>> --- Exception: 301 at .ehea_create_cq+0x234/0x2bc [ehea]
>>   LR = .ehea_create_cq+0x1c0/0x2bc [ehea]
>> [c00000000cadef40] [d0000000015e46fc] .ehea_init_port_res+0xb4/0x47c 
>> [ehea]
>> [c00000000cadf000] [d0000000015e4bd8] .ehea_up+0x114/0x6bc [ehea]
>> [c00000000cadf110] [d0000000015e51e0] .ehea_open+0x60/0x114 [ehea]
>> [c00000000cadf1b0] [c000000000542e7c] .dev_open+0x11c/0x19c
>> [c00000000cadf240] [c000000000541e7c] .dev_change_flags+0x10c/0x214
>> [c00000000cadf2e0] [c00000000054e0f8] .do_setlink+0x304/0x41c
>> [c00000000cadf3c0] [c00000000054f324] .rtnl_newlink+0x388/0x600
>> [c00000000cadf5d0] [c00000000054ef50] .rtnetlink_rcv_msg+0x260/0x2ac
>> [c00000000cadf680] [c000000000568104] .netlink_rcv_skb+0x74/0x108
>> [c00000000cadf710] [c00000000054eccc] .rtnetlink_rcv+0x34/0x58
>> [c00000000cadf7a0] [c000000000567bfc] .netlink_unicast+0x32c/0x408
>> [c00000000cadf870] [c0000000005688d8] .netlink_sendmsg+0x2d0/0x310
>> [c00000000cadf950] [c000000000529c9c] .sock_sendmsg+0xe0/0x11c
>> [c00000000cadfb50] [c000000000529fc8] .SyS_sendmsg+0x1f4/0x288
>> [c00000000cadfd70] [c000000000527f88] .SyS_socketcall+0x214/0x280
>> [c00000000cadfe30] [c0000000000085b4] syscall_exit+0x0/0x40
>> Instruction dump:
>> 78000020 7fa40040 409d0020 7889aae0 39290072 79291f24 7d2b4a14 e8690010
>> 2fa30000 419e0048 788014e2 78001f24 <7c63002a> 2fa30000 419e0034 
>> 788084a2
>> ---[ end trace cacb4bbddb53f7bd ]---
>>


-- 

---------------------------------
Sachin Sant
IBM Linux Technology Center
India Systems and Technology Labs
Bangalore, India
---------------------------------


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