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Old 10-10-2010, 07:50 PM
Michał Piotrowski
 
Default e4defrag repetable segfault ( e4defrag support?)

2010/10/6 Eric Sandeen <sandeen@redhat.com>:
> Frank Murphy wrote:
>> On 06/10/10 16:31, Eric Sandeen wrote:
>>>
>>> Maybe I'm being a bit too paranoid but it is your data after all
>>>
>>
>> I just use Rawhide for testing,
>> so a little reinstall keeps you in practice
>>
>
> OK gang, it's in e2fsprogs-1.41.12-6.fc15
>
> you have to invoke it with "-test" options to make it go
>
> Word of warning, it's not had a lot of attention, and the whole
> design could change in the future, but it's something to play with
>
> -Eric

It's my e2fsbuild build

e4defrag[23597]: segfault at 20 ip 000000000040232c sp
00007fff5bb0cd20 error 4 in e4defrag[400000+5000]
e4defrag[29272]: segfault at 20 ip 000000000040232c sp
00007fff7383d540 error 4 in e4defrag[400000+5000]
e4defrag[13291]: segfault at 20 ip 000000000040232c sp
00007fff32ede890 error 4 in e4defrag[400000+5000]
e4defrag[13682]: segfault at 20 ip 000000000040232c sp
00007fff44f5c970 error 4 in e4defrag[400000+5000]
e4defrag[13990]: segfault at 20 ip 000000000040232c sp
00007fff8a7b7300 error 4 in e4defrag[400000+5000]
e4defrag[14961]: segfault at 20 ip 000000000040232c sp
00007fff05e724f0 error 4 in e4defrag[400000+5000]
e4defrag[15501]: segfault at 20 ip 000000000040232c sp
00007fff1e406530 error 4 in e4defrag[400000+5000]

How to repeat?

create an ext4 image and mount it in /mnt/tmp/test
run
canto_della_terra.sh /mnt/tmp/test/ /mnt/tmp/reply.sh 30

Regards,
Michal
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Old 10-10-2010, 09:10 PM
Michał Piotrowski
 
Default e4defrag repetable segfault ( e4defrag support?)

> e4defrag[23597]: segfault at 20 ip 000000000040232c sp
> 00007fff5bb0cd20 error 4 in e4defrag[400000+5000]

This is caused by the race between rm and e4defrag

repeatable with attached
canto_della_terra2.sh /mnt/tmp/test/ /mnt/tmp/reply.sh 50

Regards,
Michal
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Old 10-11-2010, 02:31 PM
Eric Sandeen
 
Default e4defrag repetable segfault ( e4defrag support?)

Michał Piotrowski wrote:
>> e4defrag[23597]: segfault at 20 ip 000000000040232c sp
>> 00007fff5bb0cd20 error 4 in e4defrag[400000+5000]
>
> This is caused by the race between rm and e4defrag
>
> repeatable with attached
> canto_della_terra2.sh /mnt/tmp/test/ /mnt/tmp/reply.sh 50
>
> Regards,
> Michal
>

File a bug please? Also, what is reply.sh?

Thanks,
-Eric
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Old 10-11-2010, 02:47 PM
Michał Piotrowski
 
Default e4defrag repetable segfault ( e4defrag support?)

2010/10/11 Eric Sandeen <sandeen@redhat.com>:
> Michał Piotrowski wrote:
>>> e4defrag[23597]: segfault at 20 ip 000000000040232c sp
>>> 00007fff5bb0cd20 error 4 in e4defrag[400000+5000]
>>
>> This is caused by the race between rm and e4defrag
>>
>> repeatable with attached
>> canto_della_terra2.sh /mnt/tmp/test/ /mnt/tmp/reply.sh 50
>>
>> Regards,
>> Michal
>>
>
> File a bug please?

https://bugzilla.redhat.com/show_bug.cgi?id=641926

> *Also, what is reply.sh?

It's file where cdt scripts stores it's actions - you can try to reply
them (although it is difficult because of the racing nature of cdt
script)

>
> Thanks,
> -Eric

Regards,
Michal
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