Re: [LTP] tpci test trigger RHEL6.4GA crash!

[Wanlong Gao <gaowanlong@cn.fujitsu.com>]

On 10/29/2013 04:53 PM, alexey.kodanev@oracle.com wrote:
> Hi!
> On 10/28/2013 12:44 PM, Zeng Linggang wrote:
>> Hi,
>>
>> When we execute the test of tpci in RHEL6.4GA, the system will crash:
>>    - filesystem is broken
>>    - network is off
>> Some logs are as follows:
>>
>> [root@RHEL6U4GA-Intel64 ltp]# ata1.00: exception Emask 0x52 SAct 0x1 SErr 0xffffffff action 0xe frozen
>> ata1: SError: { RecovData RecovCommon UnrecovData Persist Proto HostInt PHYInt CommWake 10B8B Display
>> Seq TrStaTrns UnrecFIS DevExch }
>> ata1.00: failed command: WRITE FPDMA QUEUED
>> ata1.00: cmd 61/08:00:c8:fb:f3/00:00:39:00:00/40 tag 0 ncq 4096 out
>>           res 40/00:18:48:eb:33/00:00:38:00:00/40 Emask 0x56 (ATA bus error)
>> ata1.00: stauts: { DRDY }
>> ata1.00 failed to resume link (SControl FFFFFFFF)
>> ata1.00 failed to resume link (SControl FFFFFFFF)
>> ata1.00 failed to resume link (SControl FFFFFFFF)
>> Buffer I/O error on device sda13, logical block 4752991
>> sd 0:0:0:0: rejecting I/O to offline device
>> sd 0:0:0:0: rejecting I/O to offline device
>> ...
>> EXT4-fs error (device sda13): ext4_find_entry: reading directory #524297 offset 0
>> EXT4-fs error (device sda13): ext4_find_entry: reading directory #524297 offset 0
>> ...
>>
> Could you please find out which particular test case does it? it can be 
> done manually the following way:
> insmod ltp_pci.ko
> 
> Get your ata bus and pci slot number, then write it to the file (the 
> number is 16bit unsigned integer, the first 8 bits is a device number, 
> the last is a bus number):
> 
> echo "number" > /sys/devices/ltp_tcpi/bus_slot
> 
> Then try test-cases one by one:
> echo 1 > /sys/devices/ltp_tcpi/tcase
> ...
> echo 17 > /sys/devices/ltp_tcpi/tcase
> 
> You can check the result of each test case by reading 
> /sys/devices/ltp_tcpi/result file. 0 - PASS, 1 - FAIL.

PCI_RESOURCES, will cause kernel crash, could you please
check it?

Thanks,
Wanlong Gao

> 
> Thanks,
> Alexey
> 
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paper to learn more about secure code signing practices that can help keep
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