Re: http-push: double free or corruption (!prev): 0x09fedb50

From: Daniel Stenberg <daniel@haxx.se>
Date: Feb 25, 2009, 08:18 UTC
Message-ID: <alpine.DEB.1.10.0902250912470.28808@yvahk2.pbagnpgbe.fr>
In-Reply-To: <94a0d4530902241545h6781aefbne275f8017d65c8ee@mail.gmail.com>

On Wed, 25 Feb 2009, Felipe Contreras wrote:

> I'm trying to push over https and I keep getting a crash. "curl -netrc 
> https://server/repo/HEAD" seems to work fine.

> I'm attaching the output of valgrind and this is the backtrace (not on
> the same run):

Show 6 quoted lines

> #6  0x064d5b37 in PR_Free (ptr=0x0) at
> ../../../mozilla/nsprpub/pr/src/malloc/prmem.c:490
> #7  0x00df72f8 in nss_ZRealloc (pointer=0x9fedb58, newSize=4096) at arena.c:1076
> #8  0x00de579b in pem_CreateObject (fwInstance=0x8109ba0,
> fwSession=0x810bac8, mdToken=0x8109cf8, pTemplate=0xbfffd6e4,
> ulAttributeCount=4, pError=0xbfffd608) at pobject.c:1080

[...]

> Any ideas?

You didn't mention what libcurl version you use, but clearly this is built to use NSS for the SSL layer so I guess you're using a Fedora-provided library.

There's already at least one NSS-libcurl-git related bug report[*] for Fedora submitted and I think you'll have a reason to follow that to see if you can help them or they can help you. To me this looks like at least one NSS bug.

In the mean time I suggest you attempt a work-around: build a new libcurl powered by another SSL library such as OpenSSL or GnuTLS. It's just a matter of running libcurl's configure with the proper command line

[*] = https://bugzilla.redhat.com/show_bug.cgi?id=483222

-- 
  / daniel.haxx.se