From mboxrd@z Thu Jan 1 00:00:00 1970 From: u.kleine-koenig@pengutronix.de (Uwe =?iso-8859-1?Q?Kleine-K=F6nig?=) Date: Wed, 12 Jan 2011 13:03:49 +0100 Subject: BUG: spinlock recursion (sys_chdir, user_path_at, do_path_lookup ...) In-Reply-To: References: <20110111110539.GP24920@pengutronix.de> <20110112075229.GZ24920@pengutronix.de> Message-ID: <20110112120349.GH24920@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Jan 12, 2011 at 11:57:50AM +0100, Thomas Gleixner wrote: > On Wed, 12 Jan 2011, Uwe Kleine-K?nig wrote: > > > [ 75.280000] r5:be961ee4 r4:00063015 > > > > > > I started to bisect, but already the first test case showed a different > > > error (my getty dying every few seconds). > > I bisected this one now, the first bad commit is > > > > 9c0729d (x86: Eliminate bp argument from the stack tracing routines) > > > > . It made a x86 specific change to include/linux/stacktrace.h. > > As I said on IRC already, that's complete nonsense. The commit changes > a function prototype which is only relevant for x86. So how should > that affect ARM ? hmm, the conversion that you probably mean is: 22:26 < ukleinek> hmm, 9c0729dc8062bed96189bd14ac6d4920f3958743 is the first bad commit 22:26 < tglx> lol 22:26 * ukleinek goes to bed 22:27 < ukleinek> then it can only be about include/linux/stacktrace.h 22:27 * ukleinek goes to bed anyhow 22:28 < rostedt> ukleinek: btw, you could do the bisect automated with ktest.pl :-) 22:30 < tglx> ukleinek: right, a change to include/linux/stacktrace.h which is x86 specific 22:33 < tglx> makes arm explode 22:33 < tglx> rotfl I admit I didn't look what was changed there and I understood your statement as "the change to include/linux/stacktrace.h was x86 specific and so broke ARM". I will look into it again after lunch. > > According to tglx the lockup above "is related to nicks scalability > > stuff". I havn't researched yet the offending commit. Is that > > necessary? > > Only if you are interested that the problem gets fixed. OK, will do. Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-K?nig | Industrial Linux Solutions | http://www.pengutronix.de/ |