Comments (5)
pwaller
commented on May 7, 2024
Apologies, the original post missed out some details. I've edited it to add the command run and a description of the bug.
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pwaller
commented on May 7, 2024
More details that I neglected to mention.
I was trying to run novm as a user. I now think this error is likely happening because dnsmasq is failing and its stdin/stdout/stderr are set to PIPEs which are never used:
https://github.com/google/novm/blob/master/novm/net.py#L188-L190
It may be desirable to see if dnsmasq exits, and if so, show some sort of warning/error.
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pwaller
commented on May 7, 2024
Hm, I take it back. It happens even if I'm not using dnsmasq.
It always seems to be fd number 9 when it happens. Here's a strace -e open |& grep 9 without -f.
open("/usr/lib/python2.7/_weakrefset.pyc", O_RDONLY) = 9
open("/usr/lib/python2.7/lib-dynload/_ctypes.x86_64-linux-gnu.so", O_RDONLY|O_CLOEXEC) = 9
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 9
open("/usr/lib/x86_64-linux-gnu/libffi.so.6", O_RDONLY|O_CLOEXEC) = 9
open("/usr/lib/python2.7/ctypes/_endian.pyc", O_RDONLY) = 9
open("/usr/lib/python2.7/base64.pyc", O_RDONLY) = 9
open("/usr/lib/python2.7/httplib.pyc", O_RDONLY) = 9
open("/usr/lib/python2.7/socket.py", O_RDONLY) = 9
open("/usr/lib/python2.7/urlparse.py", O_RDONLY) = 9
open("/usr/lib/python2.7/mimetools.py", O_RDONLY) = 9
open("/usr/lib/python2.7/ssl.py", O_RDONLY) = 9
open("/usr/lib/python2.7/bisect.pyc", O_RDONLY) = 9
open("/usr/lib/python2.7/urllib.pyc", O_RDONLY) = 9
open("./novm/device.pyc", O_RDONLY) = 9
open("/usr/lib/python2.7/uuid.py", O_RDONLY) = 9
open("./novm/state.py", O_RDONLY) = 9
open("/dev/urandom", O_RDONLY|O_CLOEXEC) = 9
open("/home/pwaller/.novm/instances/2797.json", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 9
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 9
open("/lib/x86_64-linux-gnu/libpthread.so.0", O_RDONLY|O_CLOEXEC) = 9
open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 9
open("/proc/sys/net/core/somaxconn", O_RDONLY|O_CLOEXEC) = 9
open("/dev/kvm", O_RDWR|O_CLOEXEC) = 9
open("/home/pwaller/.novm/kernels/01d04baaba3797b15c4cfc90e1afee0ec7f472c4/setup", O_RDONLY|O_CLOEXEC) = 9
open("/home/pwaller/.novm/kernels/01d04baaba3797b15c4cfc90e1afee0ec7f472c4/vmlinux", O_RDONLY|O_CLOEXEC) = 9
open("/home/pwaller/.novm/kernels/01d04baaba3797b15c4cfc90e1afee0ec7f472c4/initrd", O_RDONLY|O_CLOEXEC) = 9
open("/home/pwaller/.novm/kernels/01d04baaba3797b15c4cfc90e1afee0ec7f472c4/sysmap", O_RDONLY|O_CLOEXEC) = 9
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pwaller
commented on May 7, 2024
(the strace was not taken on an occasion when the error actually occurred).
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pwaller
commented on May 7, 2024
Tidying up my personal issues list, so closing this. Please create a new issue if you're still interested in tracking it.
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Related Issues (20)
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