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Diffstat (limited to 'results/scraper/launchpad-without-comments/1819108')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1819108 | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1819108 b/results/scraper/launchpad-without-comments/1819108 new file mode 100644 index 000000000..a14e6255f --- /dev/null +++ b/results/scraper/launchpad-without-comments/1819108 @@ -0,0 +1,30 @@ +qemu-bridge-helper failure but qemu not exit + +When qemu-bridge-helper run failed, its parent process qemu is still alive. +This is my command line: + +qemu-system-x86_64 -curses -enable-kvm -cpu host -smp 4 -m 4096 \ + -vnc :1 \ + -kernel /data/xugang_vms/boot/vmlinuz \ + -initrd /data/xugang_vms/boot/initram \ + -append 'module_blacklist=drm,evbug net.ifnames=0 biosdevname=0 ROOTDEV=rootfs' \ + -drive file=/data/xugang_vms/instances/vn7/rootfs.img,format=qcow2,if=virtio \ + -monitor unix:/data/xugang_vms/var/monitor/vn7.sock,server,nowait \ + -netdev bridge,br=vmbr99,helper="/root/bridgehelper --ns=kvm_1 ",id=n1 -device virtio-net,netdev=n1,mac=92:99:98:76:01:07 + +"/root/bridgehelper" is self defined helper binary by me. But after bridge-helper exited with failure(not send fd to qemu process yet), the linux vm's console will be messed up. I checked the qemu source code(at net/tap.c) and found following snip: + +===> +do { + fd = recv_fd(sv[0]); + } while (fd == -1 && errno == EINTR); + saved_errno = errno; + + close(sv[0]); + + while (waitpid(pid, &status, 0) != pid) { + /* loop */ + } +<========= + +why recv_fd will infinitely wait for recv? Maybe it shall waitpid and then recv_fd ? \ No newline at end of file |