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Message-ID: <1365191567.3585.10.camel@thor.lan> Date: Fri, 05 Apr 2013 15:52:47 -0400 From: Peter Hurley <peter@...leysoftware.com> To: Vineet Gupta <Vineet.Gupta1@...opsys.com> Cc: lkml <linux-kernel@...r.kernel.org>, linux-serial@...r.kernel.org, Jiri Slaby <jslaby@...e.cz> Subject: Re: n_tty_write() going into schedule but NOT coming out [ --cc Ingo and Peter Z. as this is not scheduler-related] On Tue, 2013-04-02 at 18:56 +0530, Vineet Gupta wrote: > On 04/01/2013 08:40 PM, Peter Hurley wrote: > > On Mon, 2013-04-01 at 19:27 +0530, Vineet Gupta wrote: > >> Hi, > >> > >> Any thoughts: I observe the same issue even with CONFIG_PREEMPT and > >> CONFIG_PREEMPT_COUNT I'll see if I can reproduce this over the weekend on an old single-core laptop I still have. There were some race conditions in the N_TTY line discipline which I recently fixed. Those changes are in linux-next. Can you test if this is reproducible on linux-next? Assuming I don't reproduce this on the laptop, the only other explanation I can think of right now is that ARCLinux is not properly handling signal-driven i/o (assuming the BusyBox /bin/sh uses SIGIO). Do you know if there is anything special about the way ARCLinux handle signals? Regards, Peter Hurley -- 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/
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