Hello, I'm getting this warning with linux-3.4.0. My laptop is a DELL E5420. Please tell me if you need further testing/debug. Cheers, [ 1.054279] WARNING: at drivers/pci/search.c:44 pci_find_upstream_pcie_bridge+0x5e/0x70() [ 1.054385] Hardware name: Latitude E5420 [ 1.054457] Modules linked in: [ 1.054568] Pid: 1, comm: swapper/0 Not tainted 3.4.0ordex+ #3 [ 1.054643] Call Trace: [ 1.054716] [<ffffffff81033d4a>] warn_slowpath_common+0x7a/0xb0 [ 1.054793] [<ffffffff81033d95>] warn_slowpath_null+0x15/0x20 [ 1.054869] [<ffffffff8123899e>] pci_find_upstream_pcie_bridge+0x5e/0x70 [ 1.054949] [<ffffffff813babe7>] intel_iommu_device_group+0x77/0x100 [ 1.055027] [<ffffffff813b52d5>] add_iommu_group+0x35/0x60 [ 1.055113] [<ffffffff813b52a0>] ? bus_set_iommu+0x50/0x50 [ 1.055191] [<ffffffff8132c586>] bus_for_each_dev+0x56/0x90 [ 1.055267] [<ffffffff813b528b>] bus_set_iommu+0x3b/0x50 [ 1.055344] [<ffffffff818c4920>] intel_iommu_init+0xab0/0xb3f [ 1.055421] [<ffffffff81120b26>] ? sys_mkdirat+0x76/0xd0 [ 1.055499] [<ffffffff8189b0db>] ? memblock_find_dma_reserve+0x13d/0x13d [ 1.055578] [<ffffffff8189b0ee>] pci_iommu_init+0x13/0x3e [ 1.055655] [<ffffffff810001ca>] do_one_initcall+0x3a/0x170 [ 1.055732] [<ffffffff81897c35>] kernel_init+0x148/0x1cc [ 1.055807] [<ffffffff81897588>] ? do_early_param+0x86/0x86 [ 1.055884] [<ffffffff814fc914>] kernel_thread_helper+0x4/0x10 [ 1.055963] [<ffffffff8105de60>] ? finish_task_switch+0x80/0x110 [ 1.056040] [<ffffffff814fafdd>] ? retint_restore_args+0xe/0xe [ 1.056126] [<ffffffff81897aed>] ? start_kernel+0x30b/0x30b [ 1.056203] [<ffffffff814fc910>] ? gs_change+0xb/0xb -- Antonio Quartulli ..each of us alone is worth nothing.. Ernesto "Che" Guevara
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