From mboxrd@z Thu Jan 1 00:00:00 1970 From: w@1wt.eu (Willy Tarreau) Date: Tue, 31 Dec 2013 11:45:11 +0100 Subject: v3.13-rc6+ regression (ARM board) In-Reply-To: References: Message-ID: <20131231104511.GA9688@1wt.eu> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Dec 31, 2013 at 11:37:21AM +0100, Krzysztof Ha??asa wrote: > Hi, > > There seems to be a regression in v3.13-rc6+ (up to current tip = > 71ce176ee6ed1735b9a1160a5704a915d13849b1). > > Board is Gateworks Cambria, CPU Intel IXP435 ARM big endian, gcc 4.7.3. > The board boots correctly and works (shell mostly, and SSHD) for about > 50 seconds. After 52-54 seconds, it frozes dead without any console > (UART) output. > > Bisecting shows 5e30025a319910695f5010dc0fb53a23299da14d as the first > bad commit. Interestingly it's a merge: > > Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip > > Pull core locking changes from Ingo Molnar: > "The biggest changes: > > - add lockdep support for seqcount/seqlocks structures, this > unearthed both bugs and required extra annotation. > > - move the various kernel locking primitives to the new > kernel/locking/ directory" > > Both parents of this merge consistently show no such problem. The merge > is basically automatic, I don't see any suspect there. > > Any ideas? No, but FWIW it works fine here on an armada370 (armv7). That doesn't mean there's no bug, just that I'm not hitting it :-) Willy