Messages in this thread | | | From | Roland Dreier <> | Subject | CPA warning when running dmidecode on 2.6.29-rc1 | Date | Wed, 14 Jan 2009 10:42:36 -0800 |
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I just got the following when trying to dmidecode on a system running 2.6.29-rc1-git... STRICT_DEVMEM isn't set. Let me know if any further info would be helpful...
[72673.717016] ------------[ cut here ]------------ [72673.721697] WARNING: at /scratch/Ksrc/linux-git/arch/x86/mm/pageattr.c:560 __change_page_attr_set_clr+0xe2/0x867() [72673.732061] Hardware name: PowerEdge SC1435 [72673.736260] CPA: called for zero pte. vaddr = ffff8800dffbc000 cpa->vaddr = ffff8800dffbc000 [72673.744710] Modules linked in: tun nfs lockd nfs_acl auth_rpcgss sunrpc ipv6 bridge stp llc dm_snapshot dm_mirror dm_region_hash dm_log dm_mod kvm_amd kvm loop evdev ib_mthca thermal serio_raw psmouse pcspkr ib_mad ib_core ohci_hcd ehci_hcd tg3 libphy processor dcdbas [72673.769213] Pid: 2622, comm: dmidecode Not tainted 2.6.29-rc1 #38 [72673.775329] Call Trace: [72673.777802] [<ffffffff80233cc5>] warn_slowpath+0xd8/0x112 [72673.783310] [<ffffffff8026f178>] __alloc_pages_internal+0xd2/0x40e [72673.789596] [<ffffffff80310f15>] do_get_write_access+0x3c6/0x408 [72673.795705] [<ffffffff80278b18>] zone_statistics+0x3c/0x5f [72673.801292] [<ffffffff80222e64>] __change_page_attr_set_clr+0xe2/0x867 [72673.807916] [<ffffffff802855ae>] __purge_vmap_area_lazy+0x146/0x155 [72673.814274] [<ffffffff802869b7>] vm_unmap_aliases+0x16f/0x180 [72673.820107] [<ffffffff80223734>] change_page_attr_set_clr+0x14b/0x2fa [72673.826643] [<ffffffff802239eb>] _set_memory_wb+0x1d/0x20 [72673.832136] [<ffffffff80224c71>] reserve_pfn_range+0x1a2/0x233 [72673.838066] [<ffffffff8027d966>] remap_pfn_range+0x8f/0x342 [72673.843732] [<ffffffff80224795>] reserve_memtype+0x193/0x4cd [72673.849480] [<ffffffff8022509e>] phys_mem_access_prot_allowed+0xb4/0x1aa [72673.856275] [<ffffffff803c79d8>] mmap_mem+0x6c/0x91 [72673.861249] [<ffffffff8028205c>] mmap_region+0x2e0/0x57d [72673.866657] [<ffffffff80282585>] do_mmap_pgoff+0x28c/0x2f3 [72673.872240] [<ffffffff8020fa7f>] sys_mmap+0x8c/0xc5 [72673.877212] [<ffffffff8020bedb>] system_call_fastpath+0x16/0x1b [72673.883227] ---[ end trace 592fdf59445922ef ]--- [72673.887864] dmidecode:2622 reserve_pfn_range ioremap_change_attr failed write-back for dffbc000-dffbd000 [72673.897346] dmidecode:2622 freeing invalid memtype dffbc000-dffbd000
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