Bug 1859

Summary:

sshd does not forward break request to process as SIGINT

Product:

Portable OpenSSH

Reporter:

David Choweller <david.choweller>

Component:

sshd

Assignee:

Assigned to nobody <unassigned-bugs>

Status:

CLOSED FIXED

Severity:

normal

CC:

djm

Priority:

Version:

5.2p1

Hardware:

All

OS:

All

Bug Depends on:

Bug Blocks:

1930

Attachments:

Description	Flags
send break to correct fd	none

Description David Choweller 2011-02-17 05:01:17 AEDT

Older implementations of sshd forwarded a break request to the connected process as a SIGINT.  This was fixed (see bug 888), but seems to have re-appeared again.

We see the following in the syslog:


Feb 15 12:51:24 jerom sshd[14392]: debug1: server_input_channel_req: channel 0 request break reply 0
Feb 15 12:51:24 jerom sshd[14392]: debug1: session_by_channel: session 0 channel 0
Feb 15 12:51:24 jerom sshd[14392]: debug1: session_input_channel_req: session 0 req break


However, the connected process is not getting a SIGINT.

Comment 1 David Choweller 2011-02-17 05:10:50 AEDT

Changed version

Comment 2 Damien Miller 2011-04-13 15:01:56 AEST

Created attachment 2027 [details]
send break to correct fd

Break delivery in sshd was indeed broken. This patch should fix it, but I don't personally see any change in behaviour after applying it. Does it help your case?

Comment 3 Damien Miller 2011-11-04 11:39:39 AEDT

This fix is committed

Comment 4 Damien Miller 2015-08-11 23:05:19 AEST

Set all RESOLVED bugs to CLOSED with release of OpenSSH 7.1