Date: Fri, 5 Aug 2016 11:15:09 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Rudy <crapsh@monkeybrains.net> Cc: freebsd-jail@freebsd.org Subject: Re: spontaneously exiting Jail -- jexec or ssh -- FreeBSD 10.3 Message-ID: <20160805081509.GB83214@kib.kiev.ua> In-Reply-To: <57A3A508.2020400@monkeybrains.net> References: <57A3A508.2020400@monkeybrains.net>
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On Thu, Aug 04, 2016 at 01:26:48PM -0700, Rudy wrote:
>
> I have an odd issue, and I'm writing to see if anyone has seen the same
> issue.
>
> If I use "jexec 4 tcsh" or ssh into the jail, some sequences on the
> command line kick me out (spontaneously exit) everytime.
>
> For example, I run a couple of commands, then go to the /usr/local
> folder, hit mv TAB (file name completion) realize I am in the wrong
> folder, hit ^C, and the jail boots me. I've set the 'prompt' to be HOST
> and GUEST for the main install and jail.
>
> HOST%jexec 4 tcsh
> GUEST%date
> Thu Aug 4 13:21:13 PDT 2016
> GUEST%ls
> .cshrc etc-lavash
> .profile home
> .rnd lib
> COPYRIGHT libexec
> Dec31.2012 media
> Dec31.2013 mnt
> Dec31.2014 proc
> Dec31.2015 rescue
> INSTALL-NOTES-MONKEYBRAINS root
> basejail sbin
> bin sys
> boot tmp
> data usr
> dev var
> etc www
> etc-injera
> GUEST%cd /usr/local/
> GUEST%mv [hit TAB for completion]
> bin/ libdata/
> dcc/ libexec/
> etc-BACKUP/ man/
> etc-dist/ openssl/
> etc-injera/ sbin/
> etc-lavash/ share/
> etc/ tests/
> include/ var/
> info/ www/
> lib/ x86_64-portbld-freebsd10.1/
> GUEST%mv {^C}HOST%
>
>
> Here is a TRUSS on the last command:
>
> truss jexec 4 tcsh
> GUEST%mv write(17,"GUEST%mv ",9) = 9 (0x9)
> read(16,0x7fffffffe0d2,1) ERR#4 'Interrupted system call'
> SIGNAL 2 (SIGINT)
> sigprocmask(SIG_SETMASK,{ SIGINT },0x0) = 0 (0x0)
> process exit, rval = 1
>
> Oddly, if I don't do a couple of seemingly arbitrary commands first (ls
> and date in the example above), but go straight to the cd and then mv
> command, the jail does exit with the ERR#4.
Jails has no concept of 'exiting with error code'.
Is your shell exits, instead ?
What is the version of the jailed userspace ? Do you use nss ?
This smells like the issue fixed by r296416/r297673.
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