Hello, The patch for this later bug has been proposed. I'm not sure why it's not merged.
http://patchwork.ozlabs.org/patch/316785/ Cheers, Cam On Thu, May 1, 2014 at 10:53 AM, Gene Snider <g...@cvtt.net> wrote: > When I tried the same thing with git master (latest) I get a different > error: > qemu_chr_fe_claim_no_fail: error chardev "(null)" already used > > ** Also affects: qemu-kvm (Ubuntu) > Importance: Undecided > Status: New > > -- > You received this bug notification because you are a member of qemu- > devel-ml, which is subscribed to QEMU. > https://bugs.launchpad.net/bugs/1314857 > > Title: > seg fault in ivshmem when using ioeventfd=on > > Status in QEMU: > New > Status in “qemu-kvm” package in Ubuntu: > New > > Bug description: > When launching qemu with the ivshmem device and the nahanni guest > server there is segmentation fault in the setup_ioeventfds function of > ivshmem.c. If the ioeventfd=on flag is set the pci_ivshmem_init will > call setup_ioeventfds at line 668. This function relies on the 'peers' > member of the server info which is not allocated until line 669. > > To reproduce you will need the nahanni guest server code. The driver > code is not needed. You will also need a qcow2 or other bootable image > to use for launching qemu. The error occurs before the actual image > launch. > > Start the nahanni ivshmem server with a small global memory space ( > although the bug is not allocation specific ) > ivshmem -m 1 -n 2 -p /tmp/ivshmem_socket > > Next launch qemu with initialization for the ivshmem device. > qemu-system-x86_64 -hda test_iso.qcow2 -localtime -boot c -chardev > socket,path="/tmp/ivshmem_socket",id=ivshmem_socket -device > ivshmem,chardev=ivshmem_socket,size=1,ioeventfd=on > > If gdb is used the following error is recorded: > Program received signal SIGSEGV, Segmentation fault. > 0x000055555579dd52 in setup_ioeventfds (s=0x555556619580) > at /home/genes/work/ubuntu/qemu-kvm-1.0+noroms/hw/ivshmem.c:367 > 367 for (j = 0; j < s->peers[i].nb_eventfds; j++) { > (gdb) print s->peers > $2 = (Peer *) 0x0 > > To manage notifications about this bug go to: > https://bugs.launchpad.net/qemu/+bug/1314857/+subscriptions > > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1314857 Title: seg fault in ivshmem when using ioeventfd=on To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1314857/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
