Bug 1888159
| Summary: | ssh x11 connection is not closed when exiting gnome-terminal | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Yuki Okada <yuokada> |
| Component: | dbus | Assignee: | David King <dking> |
| Status: | CLOSED WONTFIX | QA Contact: | Desktop QE <desktop-qa-list> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.9 | CC: | sbarcomb, ykhutale |
| Target Milestone: | rc | Keywords: | Reopened |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2022-04-25 12:28:08 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Description of problem: - ssh x11 connection hangs (Terminal prompt does NOT return) if launching and exiting gnome-terminal via ssh x11 forwarding. - The prompt returns only after pressing Ctrl+C. - Last part of ssh -vvv debug log is like below. It appears some open connections remain undeleted. debug3: channel 4: status: The following connections are open: #2 x11 (t4 r4 i0/0 o0/0 fd 8/8 cc -1) #3 x11 (t4 r5 i0/0 o0/0 fd 9/9 cc -1) #4 x11 (t4 r6 i3/0 o3/0 fd 10/10 cc -1) #5 x11 (t4 r7 i0/0 o0/0 fd 11/11 cc -1) debug2: channel 5: rcvd adjust 33464 debug3: send packet: type 1 debug1: channel 2: free: x11, nchannels 3 debug3: channel 2: status: The following connections are open: #2 x11 (t4 r4 i0/0 o0/0 fd 8/8 cc -1) #3 x11 (t4 r5 i0/0 o0/0 fd 9/9 cc -1) #5 x11 (t4 r7 i0/0 o0/0 fd 11/11 cc -1) debug1: channel 3: free: x11, nchannels 2 debug3: channel 3: status: The following connections are open: #3 x11 (t4 r5 i0/0 o0/0 fd 9/9 cc -1) #5 x11 (t4 r7 i0/0 o0/0 fd 11/11 cc -1) debug1: channel 5: free: x11, nchannels 1 debug3: channel 5: status: The following connections are open: #5 x11 (t4 r7 i0/0 o0/0 fd 11/11 cc -1) debug1: fd 2 clearing O_NONBLOCK Killed by signal 2. Version-Release number of selected component (if applicable): dbus-1.10.24-15.el7 openssh-7.4p1-21.el7 gnome-terminal-3.28.2-3.el7 How reproducible: 100% Steps to Reproduce: 1. Run "ssh -X <remote hostname/ipaddress> gnome-terminal" in gnome-terminal 2. Run "exit" in gnome-terminal launched by ssh x11 forwarding 3. ssh connection hangs (The prompt does not return) Actual results: ssh connection hangs (prompt does NOT return) Expected results: ssh connection does not hang (prompt returns immediately) Additional info: - Similar issue was reported in BZ#1112339, and fixed in dbus-1.10.24-1.el7. But our issue occurs in dbus-1.10.24-15.el7. - The issue is not reproduced (Prompt returns immediately) when using xterm instead of gnome-terminal like below. $ ssh -X <remote hostname/ipaddress> xterm - When running "ssh -X <hostname/ip> gnome-terminal" between 2 RHEL8 servers, gnome-terminal is displayed in "remote" server (not in the "local" server where ssh -X is run). If you run the following, gnome-terminal is displayed in "local" server, and the issue is also reproducible (prompt does not return). $ ssh -X <remote hostname/ipaddress> 'dbus-launch --exit-with-session gnome-terminal'