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Re: sshd crashing
I can confirm the issue. It's occurring after upgrade to 1.7.16 and seems to
be limited to VMWare guests in my case. Any write attempt within the /etc
directory causes sshd to crash. Other directories are fine.
uname -a before upgrade (sshd doens't crash):
CYGWIN_NT-6.0-WOW64 dbs6 1.7.15(0.260/5/3) 2012-05-09 10:25 i686 Cygwin
and after upgrade (sshd crashes):
CyGWIN_NT-6.0-WOW64 dbs6 1.7.16(0.262/5/3) 2012-07-20 22:55 i686 Cygwin
cygrunsrv -S sshd
$ touch /etc/x
Connection to localhost closed by remote host.
Connection to localhost closed.
A familiar message appears in the event log:
service sshd failed: signal 11 raised
The /etc/x file gets created in the example above. If running vim /etc/x
instead, the .x.swp file gets also created and a vim-nox.exe process keeps
on living, taking all CPU resources till it's killed.
I have reproduced this on over ten machines running MS Server 2003 and 2008,
all VMware guests.
> I have a fresh installation of cygwin on xp and win7 (both run 1.17.16-1).
> I have run ssh-host-config followed by rebaseall. The CYGWIN variable
> for sshd is not set.
> I have tried with and without priv. separation.
> It is started with cygrunsrv -S sshd
> I can connect with ssh localhost. Things are ok until I do vi
> /etc/profile. At this moment it crashes.
> Now if I try the version without priv separation to start by hand:
> /usr/sbin/sshd -D -d -e things go well and it does not crashes when in
> ssh session /etc/profile is edited.
> Am I missing something in config?
> Info from Event Viewer:
> The description for Event ID 0 from source sshd cannot be found.
> Either the component that raises this event is not installed on your
> local computer or the installation is corrupted. You can install or
> repair the component on the local computer.
> If the event originated on another computer, the display information
> had to be saved with the event.
> The following information was included with the event:
> sshd: PID 484: service `sshd' failed: signal 11 raised
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