On Wed, 28 Nov 2007 16:19:59 -0500 Lee Schermerhorn <Lee.Schermerhorn@xxxxxx> wrote: > As soon as this loop hits the first non-existent node on my platform, I > get a NULL pointer deref down in __alloc_pages. Stack trace below. > > Perhaps N_POSSIBLE should be N_HIGH_MEMORY? That would require handling > of memory/node hotplug for each memory control group, right? But, I'm > going to try N_HIGH_MEMORY as a work around. > Hmm, ok. (>_< > Call Trace: > [<a000000100014de0>] show_stack+0x80/0xa0 > sp=a0000001008e39c0 bsp=a0000001008dd1b0 > [<a000000100015a70>] show_regs+0x870/0x8a0 > sp=a0000001008e3b90 bsp=a0000001008dd158 > [<a00000010003d130>] die+0x190/0x300 > sp=a0000001008e3b90 bsp=a0000001008dd110 > [<a000000100071b80>] ia64_do_page_fault+0x8e0/0xa20 > sp=a0000001008e3b90 bsp=a0000001008dd0b8 > [<a00000010000b5c0>] ia64_leave_kernel+0x0/0x270 > sp=a0000001008e3c20 bsp=a0000001008dd0b8 > [<a000000100132e10>] __alloc_pages+0x30/0x6e0 > sp=a0000001008e3df0 bsp=a0000001008dcfe0 > [<a000000100187370>] new_slab+0x610/0x6c0 > sp=a0000001008e3e00 bsp=a0000001008dcf80 > [<a000000100187470>] get_new_slab+0x50/0x200 > sp=a0000001008e3e00 bsp=a0000001008dcf48 > [<a000000100187900>] __slab_alloc+0x2e0/0x4e0 > sp=a0000001008e3e00 bsp=a0000001008dcf00 > [<a000000100187c80>] kmem_cache_alloc_node+0x180/0x200 > sp=a0000001008e3e10 bsp=a0000001008dcec0 > [<a0000001001945a0>] mem_cgroup_create+0x160/0x400 > sp=a0000001008e3e10 bsp=a0000001008dce78 > [<a0000001000f0940>] cgroup_init_subsys+0xa0/0x400 > sp=a0000001008e3e20 bsp=a0000001008dce28 > [<a0000001008521f0>] cgroup_init+0x90/0x160 > sp=a0000001008e3e20 bsp=a0000001008dce00 > [<a000000100831960>] start_kernel+0x700/0x820 > sp=a0000001008e3e20 bsp=a0000001008dcd80 > Maybe zonelists of NODE_DATA() is not initialized. you are right. I think N_HIGH_MEMORY will be suitable here...(I'll consider node-hotplug case later.) Thank you for test! Regards, -Kame _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers