[Mageia-dev] urpmi segfaults on the build system (was Re: Our BS is about to eat packages?)

Colin Guthrie mageia at colin.guthr.ie
Thu Aug 23 22:54:51 CEST 2012


'Twas brillig, and Olivier Blin at 11/08/12 11:33 did gyre and gimble:
> nicolas vigier <boklm at mars-attacks.org> writes:
> 
>> On Mon, 29 Aug 2011, Michael Scherer wrote:
> 
> [...]
> 
>>>> After looking at the problem, I suspect it could be linked to texmf.
>>>> Each time iurt install it, the process stop.  
>>>
>>> Boklm found the problem, it was urpmi segfaulting.
>>>
>>> We remove the chroot, and thing seems to be ok now again.
>>
>> But we probably still have the problem, as segfaults seems to be
>> happenning not all the time.
>>
>> After succesfully reproducing the error using the old chroot and running
>> urpmi several times, the backtrace :
>>
>> #0  0xf7405b29 in _int_malloc () from /lib/i686/libc.so.6
>> #1  0xf7408177 in malloc () from /lib/i686/libc.so.6
>> #2  0xf6eadfa8 in __os_malloc (env=0xb442db8, size=4149199776, storep=0xffbbf5cc) at ../os/os_alloc.c:253
>> #3  0xf6eac47c in __memp_sync_int (env=0xb442db8, dbmfp=0xb893130, trickle_max=0, flags=8, wrote_totalp=0x0, interruptedp=0x0)
>>     at ../mp/mp_sync.c:294
>> #4  0xf6eacfaf in __memp_fsync (dbmfp=0xb893130) at ../mp/mp_sync.c:202
>> #5  0xf6e3cdf9 in __db_sync (dbp=0xb8963e8) at ../db/db_am.c:706
>> #6  0xf6e3aa68 in __db_refresh (dbp=0xb8963e8, txn=0x0, flags=0, deferred_closep=0xffbbf6fc, reuse=0) at ../db/db.c:819
>> #7  0xf6e3adc5 in __db_close (dbp=0xb8963e8, txn=0x0, flags=0) at ../db/db.c:695
>> #8  0xf6e52a38 in __db_close_pp (dbp=0xb8963e8, flags=0) at ../db/db_iface.c:253
>> #9  0xf72fec45 in db3close (dbi=0xb893030, flags=0) at backend/db3.c:494
>> #10 0xf73071c6 in dbiClose (db=0xb2b6950) at ../lib/rpmdb_internal.h:453
>> #11 rpmdbClose (db=0xb2b6950) at rpmdb.c:852
>> #12 0xf73379d6 in rpmtsCloseDB (ts=0xb231b20) at rpmts.c:64
>> #13 0xf7337a48 in rpmtsFree (ts=0xb231b20) at rpmts.c:567
>> #14 0xf736c7a1 in XS_URPM__DB_DESTROY (my_perl=0x8d42008, cv=0x8e2d420) at URPM.xs:2794
> 
> [...]
> 
> Hello,
> 
> After hitting the issue yesterday with the "git" package, we had a look
> at the issue together with pterjan.
> I had to merge some patches in valgrind to support the new compressed
> debug info first, but then valgrind spotted some interesting issues.
> 
> pterjan fixed some of them, fixes are now in perl-URPM 4.12.
> It should help preventing "build loops" in the BS.
> 
> Attached is the valgrind log with remaining issues, maybe insightful for
> Titi.


jonund was seeing plenty urpmi segv's today...


Col


-- 

Colin Guthrie
colin(at)mageia.org
http://colin.guthr.ie/

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