lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:	Sun, 02 Nov 2008 23:42:29 -0800
From:	Larry Finger <Larry.Finger@...inger.net>
To:	Alan <alan@...rguk.ukuu.org.uk>
CC:	LKML <linux-kernel@...r.kernel.org>
Subject: System hang from holding left shift key

While absentmindedly holding down the left shift key as I was thinking about my
next input, I froze the keyboard. After 3 seconds, the system sounded a high
beep, and then a low beep after another 3 seconds. At that point, no key entry
had any effect. From the beeps, one might conclude that the input buffer is
full, but a CTRL/U did not clear it. Fortunately, a short press on the power
button shut down the machine cleanly.

I don't know if this is a regression. I found it in v2.6.28-rc2, but the oldest
kernel that I could test (v2.6.24) already has the problem.

When the beeps occur, a stack dump is as follows:

Pid: 2989, comm: Xorg Not tainted 2.6.28-rc2-Linus-00473-g67d1128-dirty #2
Call Trace:
  [<ffffffff803957ce>] kd_mksound+0x69/0xa9
  [<ffffffff8039196c>] vt_ioctl+0x3c4/0x1744
  [<ffffffff8038b097>] tty_ioctl+0x793/0x7fa
  [<ffffffff8025c6c0>] ? trace_hardirqs_off+0xd/0xf
  [<ffffffff8044f94a>] ? _spin_unlock_irqrestore+0x3d/0x4c
  [<ffffffff802bf102>] vfs_ioctl+0x2f/0x7d
  [<ffffffff802bf4fe>] do_vfs_ioctl+0x3ae/0x3e0
  [<ffffffff8020c07c>] ? sysret_check+0x27/0x62
  [<ffffffff802bf577>] sys_ioctl+0x47/0x6a
  [<ffffffff8020c04b>] system_call_fastpath+0x16/0x1b

Thanks,

Larry


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists