Hu Tao, We hit this issue every time when we build the kernel on the board. Are you running some stress testing program on the board? Thanks, -Bryan On Wed, Nov 24, 2010 at 12:34 PM, TAO HU <tghk48@xxxxxxxxxxxx> wrote: > Hi, Bryan > > Thanks. > > Unfortunately, it is not easy to reproduce the problem in our HW. > We only observed 2~3 times so far. > > But we do enable HIGHMEM, SMP and L2 cache in our config. > That's why I'd like to know the root cause. > > On Wed, Nov 24, 2010 at 12:21 PM, Bryan Wu <bryan.wu@xxxxxxxxxxxxx> wrote: >> Tao Hu, >> >> Did you try the similar solution in our Ubuntu kernel? We suspect it >> related to HIGHMEM, SMP and cache control code. >> And how about your test case? >> >> Thanks a lot, >> -Bryan >> >> On Wed, Nov 24, 2010 at 11:11 AM, TAO HU <tghk48@xxxxxxxxxxxx> wrote: >>> Hi, All >>> >>> We got following errors on OMAP ES2.0 board. >>> >>> And noticed a similar case was reported at below link >>> http://www.opensubscriber.com/message/kernel-team@xxxxxxxxxxxxxxxx/14591440.html >>> >>> Is any conclusion/fix available? >>> >>> <1>[ 348.873840] Unhandled fault: imprecise external abort (0x1406) at >>> 0x462d301c >>> <1>[ 348.885040] Unhandled fault: imprecise external abort (0x1406) at >>> 0xbe8fec78 >>> <1>[ 348.897247] Unhandled fault: imprecise external abort (0x1406) at >>> 0xbe8fec78 >>> <1>[ 348.954772] Unhandled fault: imprecise external abort (0x1406) at >>> 0xb000c454 >>> <1>[ 348.967590] Unhandled fault: imprecise external abort (0x1406) at >>> 0xb000c454 >>> <1>[ 348.989471] Unhandled fault: imprecise external abort (0x1406) at >>> 0xbeb02fb8 >>> <4>[ 349.006683] Process 2664(coredump) has RLIMIT_CORE set to 1 >>> <4>[ 349.012481] Aborting core >>> <1>[ 349.023040] Unhandled fault: imprecise external abort (0x1406) at >>> 0xbeb02fb8 >>> <1>[ 349.041625] Unhandled fault: imprecise external abort (0x1406) at >>> 0xbed6cfbc >>> <4>[ 349.061370] Process 2665(kkkkkkkkkkkkkkk) has RLIMIT_CORE set to 1 >>> <4>[ 349.067810] Aborting core >>> <0>[ 349.077362] Kernel panic - not syncing: Attempted to kill init! >>> >>> -- >>> Best Regards >>> Hu Tao >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-omap" in >>> the body of a message to majordomo@xxxxxxxxxxxxxxx >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>> >> > > > > -- > Best Regards > Hu Tao > -- Bryan Wu <bryan.wu@xxxxxxxxxxxxx> Kernel Developer +86.138-1617-6545 Mobile Ubuntu Kernel Team Canonical Ltd. www.canonical.com Ubuntu - Linux for human beings | www.ubuntu.com -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
