Bug 2164711

Summary:	Connecting with the command switch -N works fine, with "-o SessionType none" I cannot kill the process anymore
Product:	[Fedora] Fedora	Reporter:	Kees de Jong <keesdejong+dev>
Component:	openssh	Assignee:	Dmitry Belyavskiy <dbelyavs>
Status:	CLOSED WORKSFORME	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	low	Docs Contact:
Priority:	unspecified
Version:	37	CC:	crypto-team, dbelyavs, dwalsh, jjelen, lkundrak, mattias.ellert, tm
Target Milestone:	---	Keywords:	Triaged
Target Release:	---
Hardware:	x86_64
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Last Closed:	2023-06-02 13:56:54 UTC	Type:	Bug
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Description Kees de Jong 2023-01-26 08:53:02 UTC

Description of problem:
When using `ssh localhost -o "SessionType none"` I can connect just fine but cannot kill the process with ctrl+c. However, when using `ssh localhost -N`, I can use ctrl+c to kill the process.


Version-Release number of selected component (if applicable):
openssh-8.8p1-7.fc37.x86_64

Additional info:
Someone else tested it on Ubuntu using version 8.9, he couldn't reproduce it. So maybe an update of OpenSSH to 8.9 or newer works.

Comment 1 Dmitry Belyavskiy 2023-02-07 12:16:34 UTC

Could you please try packages from rawhide (OpenSSH 9.0+)?

Comment 2 Kees de Jong 2023-02-08 08:13:39 UTC

I've done the following.

* dnf in fedora-repos-rawhide
* sudo dnf --disablerepo=* --enablerepo=rawhide --releasever=38 update openssh
* systemctl restart sshd
* ssh localhost -o "SessionType none"

And now I can properly kill the SSH session. That version also fixes it.

* After that I rolled back with `dnf history undo last`