Chronological Thread 

< Chronological >      < Thread >

---

Dear all,

we want to let you know that the SEGFAULT problem was caused
by wrong library usage and not by the sctplib implementation itself.

In the sctp_receive call the user MUST provide the memory space for
the packet and passes a pointer to that user allocated memory to the
library. Please look into the examples.

Best regards
Michael

Michael Tüxen wrote:
>
> Dear Lode,
>
> did you call sctp_receive only once in data_arrive?
>
> If yes and you can not find the problem, plese send me the
> (Michael.Tuexen AT micmac.franken.de)
> a complete tarball so that
> we can reproduce the bug.
>
> Best regards
> Michael
>
> Coene Lode wrote:
> >
> > > -----Original Message-----
> > > From: Michael Tüxen
> > > [mailto:Michael.Tuexen AT micmac.franken.de]
> > > Sent: woensdag 25 april 2001 16:13
> > > To:
> > > discussion AT sctp.de
> > > Subject: Re: [SCTP-Discussion] sctp_receive produces segfaults
> > >
> > >
> > > Dear Lode,
> > >
> > > are you calling sctp_receive in the data_arrive primitve?
> >
> > yes, I do
> >
> > >
> > > The associd handling has changed and it is OK that you get 1,
> > > 2, and so
> > > on.
> >
> > No problem with that, just checking.
> >
> > >
> > > Best regards
> > > Michael
> > >
> >
> > Happy SCTP'ing in the sun...
> >
> > Thanks,
> > Lode
> >
> > > Coene Lode wrote:
> > > >
> > > > Well folks,
> > > >
> > > > Upgrading to SCTPlib-1.0.0-Pre9, I got accross the follwing
> > > problem which
> > > > did not occur in the pre6(the one I was previously using).
> > > > Every time I call sctp_receive, a segfault is signalled at
> > > > DLL_DeleteCurrentRecord line 900(module DLL_main.c) when readin
> > > > list->current->info. it seems it is reading into the middle
> > > of nowhere(thus
> > > > generating the segmentation fault.
> > > > There may something wrong in my software because a older
> > > version does the
> > > > SCTP_receive without segfault, but produces a goblygook
> > > bytestring, which
> > > > was not the bytestring that was send(however the length is
> > > correct, so there
> > > > must be something there) Was checked via ethereal: DATA
> > > send , SACK went
> > > > back
> > > > My conclusion: sctp_receive copies data from the "middle of
> > > nowhere" to me.
> > > > Reason: I don't know.
> > > >
> > > > As a aside note: in the previous version pre6, the
> > > association id was always
> > > > a big number 8596726(example) and always different from the
> > > previous one.
> > > > Now in the pre9 version I always get 1 which is the same as
> > > the previous
> > > > one.(Which is weird to say the least) Maybe this has
> > > something to do with my
> > > > troubles.
> > > >
> > > > In order to check this out again I am going to put in pre6
> > > and test it
> > > > again.
> > > >
> > > > yours sincerly,
> > > > Lode
> > > >
> > > > PS: note to myself: if it works, don't upgrade
> > > >
> > > > Siemens Atea ICN D CS D
> > > > Software Development
> > > > Atealaan 34
> > > > B-2200 Herentals Belgium
> > > > Tel +32-14-25-2081 / Fax +32-14-25-3212
> > > > E-mail:
> > > > lode.coene AT siemens.atea.be
> > > >
> > > > _______________________________________________
> > > > discussion mailing list
> > > > discussion AT sctp.de
> > > > http://www.sctp.de/mailman/listinfo/discussion
> > > _______________________________________________
> > > discussion mailing list
> > > discussion AT sctp.de
> > > http://www.sctp.de/mailman/listinfo/discussion
> > >
> > _______________________________________________
> > discussion mailing list
> > discussion AT sctp.de
> > http://www.sctp.de/mailman/listinfo/discussion
> _______________________________________________
> discussion mailing list
> discussion AT sctp.de
> http://www.sctp.de/mailman/listinfo/discussion

---

• [SCTP-Discussion] sctp_receive produces segfaults, Coene Lode, 04/25/2001
  • Re: [SCTP-Discussion] sctp_receive produces segfaults, Michael Tüxen, 04/25/2001
  • <Possible follow-up(s)>
  • RE: [SCTP-Discussion] sctp_receive produces segfaults, Coene Lode, 04/25/2001
    • Re: [SCTP-Discussion] sctp_receive produces segfaults, Michael Tüxen, 04/25/2001
      • Re: [SCTP-Discussion] sctp_receive produces segfaults, Michael Tüxen, 04/26/2001
  • RE: [SCTP-Discussion] sctp_receive produces segfaults, Coene Lode, 04/25/2001
    • [SCTP-Discussion] SCTP code in solaris, prashant kerur, 04/26/2001
      • Re: [SCTP-Discussion] SCTP code in solaris, Tomas Kukosa, 04/26/2001
  • RE: [SCTP-Discussion] sctp_receive produces segfaults, Coene Lode, 04/26/2001

---

Archive powered by MHonArc 2.6.19+.