On Mon, 9 May 2011 10:59:41 +0200, Christian Brunner <chb@xxxxxx> wrote: > Hi, > > after upgrading to qemu with josh's librbd patches I'm triggering the > following assertion, when I'm running "yum upgrade" inside a guest. > > I suspect there is a race condition somewhere, but I don't have a clue > at the moment. This is similar to a race condition Stefan encountered (http://marc.info/?l=kvm&m=130225223223016&w=2), although this crash was during a write whereas his test was just reading the image. > > Regards, > Christian > > common/Mutex.h: In function 'void Mutex::Lock(bool)', in thread > '0x7fea16b36700' > common/Mutex.h: 118: FAILED assert(r == 0) Usually this assert fails due to a use-after-free. If you've got a core file, could you print the lock that hit this assert and the data structure containing it? Thanks! Josh -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
