On 12/03/15 13:11, Stas Sergeev wrote: > 12.03.2015 16:04, Russell King - ARM Linux пишет: >> On Thu, Mar 12, 2015 at 03:47:35PM +0300, Stas Sergeev wrote: >>> 12.03.2015 15:33, Peter Hurley пишет: >>>> On 03/11/2015 10:24 AM, Stas Sergeev wrote: >>>>> However, while testing, I've suddenly got another crash happened >>>>> a bit earlier than the previous one used to happen: (OOM? How??) >>>>> --- >>>>> [ 0.000000] Booting Linux on physical CPU 0x0 >>>>> [ 0.000000] Linux version 4.0.0-rc2-00137-gb672c98-dirty >>>>> (root@host-010-117) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) >>>>> #2 SMP 5 >>>>> [ 0.000000] CPU: ARMv7 Processor [562f5842] revision 2 (ARMv7), >>>>> cr=10c5387d >>>>> [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction >>>>> cache >>>>> [ 0.000000] Machine model: Marvell Armada XP Development Board >>>>> DB-MV784MP-GP >>>>> [ 0.000000] Ignoring memory block 0x100000000 - 0x200000000 >>>> Once you patch your bootloader, you'll want to configure your kernel >>>> for CONFIG_ARM_LPAE=y to enable the high 4GB of memory you have, as >>>> it's being ignored in this config right now (as shown above and in >>>> the oom message below). >>> Hi Peter, thanks for this hint. >>> I actually already tried with lpae, and, except for the missing >>> 256Mb, everything works properly. :) >> How reproducable is the OOM? Have you tested LPAE as much as you did >> without LPAE? > Hi Russel, OOM is reproduceable quite fine only on old uboot > and non-lpae mode. > With lpae mode and old uboot OOM doesn't happen, but the board is not > very reliable. > With old uboot and mem=3G OOM is not reproduceable! > With new uboot and whatever lpae more, OOM does not happen. > So, after all, it still seems to be related to the problematic memory > region. Let me know if you still suspect a bug and need more testing. >
Hi Stas, Recently, I've done some work on memtest kernel feature [1]. It helped to track down an issue with memory corruption on arm64 platform. I wonder if it is able to catch your case? [1] http://comments.gmane.org/gmane.linux.kernel.mm/129669 Thanks Vladimir > _______________________________________________ > linux-arm-kernel mailing list > [email protected] > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
