From mboxrd@z Thu Jan 1 00:00:00 1970 From: bvantiel@gmail.com (Bas van Tiel) Date: Mon, 9 Jan 2017 19:06:19 +0100 Subject: Unhandled level 2 translation fault (11) at 0x000000b8, esr 0x92000046, rpi3 (aarch64) In-Reply-To: <20170109151354.GC7593@e104818-lin.cambridge.arm.com> References: <20161230151323.583b7ac5@xhacker> <20170109151354.GC7593@e104818-lin.cambridge.arm.com> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org > I defined STACKSIZE to the kernel's SIGSTKSZ (16384) and it seems to run > fine, though I'll leave it longer/overnight (on a Juno board). With the > 4K signal stack it was crashing shortly after start. I tried the STACKSIZE of 16384 for both the RPI3 and the PINEA64 board and still see the same behaviour of crashing. Sometimes the process is also blocked for a long time before it crashes. Setting the interval to 200 usec [5 Khz] will help to crash it faster. To further isolate the issue I will create a kernel module (based on a hrtimer) that will sent a periodic signal to the registered process and execute the same sighandler logic to check if the problem is still there. regards Bas