From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux@arm.linux.org.uk (Russell King - ARM Linux) Date: Wed, 5 Aug 2015 11:07:01 +0100 Subject: arm kernel oops in highmem.c with 4.2 In-Reply-To: References: Message-ID: <20150805100701.GV7557@n2100.arm.linux.org.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Aug 05, 2015 at 11:01:01AM +0100, Peter Robinson wrote: > Hi All, > > On Fedora 23 with recent 4.2 kernels we're seeing a crash (below) in > highmem.c on a fairly regular occurrence across a number of different > SoCs, I've seen it with at least AllWinner A20, i.MX6Q, Tegra2 and 124 > with both a LPAE and non LPAE kernel, seen it happen when doing a > number of different things but regenerating a initrd, applying updates > (dnf/yum) and starting X are all pretty good triggers. I've yet to see any problems with mainline 4.2-rc5 kernels on any of my iMX6 platforms, which includes initramfs regeneration, apt-get updates and X. > [71751.658105] ------------[ cut here ]------------ > [71751.658153] kernel BUG at arch/arm/mm/highmem.c:114! Well, in mainline kernels, the BUG is on line 113, not line 114. So at least this file is modified from mainline kernels. Maybe the problem is caused by patches applied to Fedora kernels? -- FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up according to speedtest.net.