On 11/10/2015 06:15 PM, Peter Hurley wrote: > On 11/10/2015 05:43 PM, Andi Kleen wrote: >> On Tue, Nov 10, 2015 at 11:39:57PM +0100, Andi Kleen wrote: >>>> I've just tried to reproduce this without success on my current >>>> tree which has some additional patches I just posted this am. They weren't >>>> intended to fix crashes but they directly impact the area of concern. Could >>>> you try these three? >>>> >>>> [PATCH v2 2/4] n_tty: Ignore all read data when closing >>>> [PATCH v2 3/4] tty: Abstract and encapsulate tty->closing behavior >>>> [PATCH v2 4/4] tty: Remove drivers' extra tty_ldisc_flush() >>>> >>> Applying the three patches fixes the crash. >>> I haven't tried to figure out which one did the trick. >> >> Actually I was wrong sorry. It still crashes, but now it doesn't >> hang the system anymore. > > Argghh. > Can you run the patch below and send me full dmesg (privately if you prefer)? Nevermind. I see how it's happening now; it's being initiated by hangup, not close. FWIW, it's been like that nearly forever; your user-space/tool is triggering this because ECHO is on. Regards, Peter Hurley -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
