Hello All, I work in Cisco Virtualization team and I found this email list from libvirt.org We are hitting a random libvirtd crash with a traceback during guest shutdown - #3 0x00007f4a34a2d4ad in malloc_printerr (action=2, str=0x7f4a34acb682 "corrupted double-linked list", ptr=<value optimized out>) at malloc.c:5949 #4 0x00007f4a34a2d58c in malloc_consolidate (av=<value optimized out>) at malloc.c:4852 #5 0x00007f4a34a2f83c in _int_malloc (av=0x7f4a34cffa20, bytes=262320) at malloc.c:4184 #6 0x00007f4a34a310dc in __libc_calloc (n=<value optimized out>, elem_size=<value optimized out>) at malloc.c:3901 #7 0x00007f4a3620469f in virAlloc () from /auto/mcp-project97/mcp_dev/BLD-BLD_MCP_DEV_LATEST_20130609_000113/linkfarm/x86_64/usr/lib64/libvirt.so.0 #8 0x00007f4a3626e93c in prepareCall () from /auto/mcp-project97/mcp_dev/BLD-BLD_MCP_DEV_LATEST_20130609_000113/linkfarm/x86_64/usr/lib64/libvirt.so.0 #9 0x00007f4a36271463 in call () from /auto/mcp-project97/mcp_dev/BLD-BLD_MCP_DEV_LATEST_20130609_000113/linkfarm/x86_64/usr/lib64/libvirt.so.0 #10 0x00007f4a362624d2 in remoteDomainLookupByName () from /auto/mcp-project97/mcp_dev/BLD-BLD_MCP_DEV_LATEST_20130609_000113/linkfarm/x86_64/usr/lib64/libvirt.so.0 #11 0x00007f4a3624d09f in virDomainLookupByName () from /auto/mcp-project97/mcp_dev/BLD-BLD_MCP_DEV_LATEST_20130609_000113/linkfarm/x86_64/usr/lib64/libvirt.so.0 I believe this TB is quite similar to the one reported by various Redhat bugs mentioned in the subject. We are running libvirt version 0.8.4. I understand this issue has been fixed in the later versions of libvirt but due to business reasons, we are not able to upgrade it yet. Hence I was trying to look for a patch that might have fixed the issue. I found this link that supposedly describes the patch but it is not accessible to people outside red hat network (I think!) https://bugzilla.redhat.com/show_bug.cgi?id=915353 It would be really helpful if you could point me out a patch if it exists! Thank you in advance. Udayan Bapat Cisco – Foundation Engineering Virtualization Research Triangle Park, NC