On Wed, Oct 09, 2013 at 06:28:01PM +0200, Ingo Molnar wrote: > > Hm, so I'm seeing boot crashes with the config attached: > > INIT: version 2.86 booting > BUG: unable to handle kernel BUG: unable to handle kernel paging > requestpaging request at eaf10f40 > at eaf10f40 > IP:IP: [<b103e0ef>] task_work_run+0x52/0x87 > [<b103e0ef>] task_work_run+0x52/0x87 > *pde = 3fbf9067 *pde = 3fbf9067 *pte = 3af10060 *pte = 3af10060 > > Oops: 0000 [#1] Oops: 0000 [#1] DEBUG_PAGEALLOCDEBUG_PAGEALLOC > > CPU: 0 PID: 171 Comm: hostname Tainted: G W > 3.12.0-rc4-01668-gfd71a04-dirty #229484 > CPU: 0 PID: 171 Comm: hostname Tainted: G W > 3.12.0-rc4-01668-gfd71a04-dirty #229484 > task: eaf157a0 ti: eacf2000 task.ti: eacf2000 > > Note that the config does not have NUMA_BALANCING enabled. With another > config I also had a failed bootup due to the OOM killer kicking in. That > didn't have NUMA_BALANCING enabled either. > > Yet this all started today, after merging the NUMA patches. > > Any ideas? > CONFIG_MGEODE_LX=y It looks like -march=geode generates similar borkage to the -march=winchip2 like we found earlier today. Must be randconfig luck to only hit it now. Very easy to see if you build kernel/task_work.s, the bitops jc label path fails to initialize the return value. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>