sudo hangs after some time

vn flag

sudo hangs in my Archlinux (running under Hyper-V) after some time (usually a day).

Since this hangs my system, I have kept a root window open to do strace whenever this happens. strace sudo ls shows a sendto syscall to a socket called /dev/log:

connect(7, {sa_family=AF_UNIX, sun_path="/dev/log"}, 110) = 0
sendto(7, "<37>Jan 25 20:04:39 sudo:     ro"..., 107, MSG_NOSIGNAL, NULL, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)

I can also see some messages in journalctl -b that looks like this:

Jan 25 18:36:04 archlinux systemd-journald[354638]: Missed 848 kernel messages
Jan 25 18:36:04 archlinux kernel: hv_balloon: Unhandled message: type: 53216

Not sure if it is connected to the problem though. Does anyone know what is happening? LTS kernel helped for sometime; but after recent upgrade, even that is not an option.

Nishant avatar
vn flag
This issue has not recurred after turning off **dynamic memory** in Hyper-V. Someone suggested that this might be causing `/dev/log` socket to get killed.

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