Date: Sun, 20 Apr 2014 16:37:36 -0700 From: Tim Kientzle <kientzle@freebsd.org> To: FreeBSD ARM <freebsd-arm@freebsd.org> Subject: Curious BeagleBone console hang... Message-ID: <723E6F77-A274-4115-8D37-C12353494EA1@freebsd.org>
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Here's an odd one:
$ stty 72
consistently hangs the serial console on a BeagleBone
running FreeBSD-CURRENT r264208. (I found this out
by accidentally omitting 'rows' when I typed the command.)
Doesn't seem to affect an SSH session, only the serial console.
After doing this, nothing seems to be running; the console
is just completely non responsive: even echo is dead.
I can recover by logging in through SSH and killing the
console login.
Trying to puzzle it out:
$ truss stty 72
...
ioctl(0,TIOCGETA,0xbffffcb0) = 0 (0x0)
ioctl(0,TIOCGETD,0xbffffc9c) = 0 (0x0)
ioctl(0,TIOCGWINSZ,0xbffffcdc) = 0 (0x0)
ioctl(1,TIOCGETA,0xbffffb60) = 0 (0x0)
ioctl(2,TIOCGETA,0xbffffb60) = 0 (0x0)
fstat(1,{ mode=crw------- ,inode=32,size=0,blksize=4096 }) = 0 (0x0)
fstat(2,{ mode=crw------- ,inode=32,size=0,blksize=4096 }) = 0 (0x0
Does this make sense to anyone?
Tim
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