https://bugzilla.mindrot.org/show_bug.cgi?id=3850
Bug ID: 3850
Summary: concurrent runs of ssh corrupts the known_hosts file
Product: Portable OpenSSH
Version: 10.0p2
Hardware: amd64
OS: Linux
Status: NEW
Severity: minor
Priority: P5
Component: ssh
Assignee: [email protected]
Reporter: [email protected]
If I run few (about 16) ssh commands in parallel as seen in [1], then
from time to time the known_hosts files gets being corrupted. In that
case I have to delete those lines where 2 parallel ssh commands wrote
into the same line.
I do wonder whether ssh allows concurrent runs at the same machine (for
new systems where the ssh host key is not yet known) or not?
[1]
https://github.com/toralf/tor-relays/blob/main/bin/trust-host-ssh-key.sh#L16
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