Hi,
I'm running kernel 4.11-rc1 on VMWare Workstation 12 Pro (Host : windows 10, Guest : Fedora 25). I got kernel warning with latest kernel. According to git bisect, first bad commit is [3bb434cdcc6af3d4e70ba041e6f596e465d11e14] vmw_vmci: switch to pci_irq_alloc_vectors. Reverting the commit removes the warning I see. Here is the kernel warning ; [ 2.255007] vmw_vmci 0000:00:07.7: Found VMCI PCI device at 0x11080, irq 16 [ 2.255042] vmw_vmci 0000:00:07.7: Using capabilities 0xc [ 2.255076] ------------[ cut here ]------------ [ 2.255083] WARNING: CPU: 6 PID: 1 at drivers/pci/msi.c:966 __pci_enable_msix+0x475/0x4d0 [ 2.255084] Modules linked in: [ 2.255087] CPU: 6 PID: 1 Comm: swapper/0 Not tainted 4.11.0-rc1+ #227 [ 2.255088] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015 [ 2.255089] Call Trace: [ 2.255094] dump_stack+0x58/0x73 [ 2.255097] __warn+0xea/0x110 [ 2.255100] ? __pci_enable_msix+0x475/0x4d0 [ 2.255103] warn_slowpath_null+0x2a/0x30 [ 2.255105] __pci_enable_msix+0x475/0x4d0 [ 2.255109] pci_alloc_irq_vectors_affinity+0xcc/0x170 [ 2.255112] vmci_guest_probe_device+0x4e8/0x7a0 [ 2.255115] ? refcount_inc+0xb/0x40 [ 2.255118] pci_device_probe+0x83/0x100 [ 2.255120] ? devices_kset_move_last+0x57/0xc0 [ 2.255122] ? sysfs_create_link+0x25/0x50 [ 2.255125] driver_probe_device+0x291/0x470 [ 2.255127] ? pci_match_device+0xde/0x100 [ 2.255129] __driver_attach+0xe9/0xf0 [ 2.255130] ? refcount_dec_and_test+0xf/0x20 [ 2.255133] ? klist_next+0x63/0xd0 [ 2.255135] ? driver_probe_device+0x470/0x470 [ 2.255138] bus_for_each_dev+0x57/0xa0 [ 2.255140] driver_attach+0x1e/0x20 [ 2.255141] ? driver_probe_device+0x470/0x470 [ 2.255143] bus_add_driver+0x17f/0x270 [ 2.255145] driver_register+0x5d/0xf0 [ 2.255148] ? vmballoon_init+0x151/0x151 [ 2.255150] __pci_register_driver+0x33/0x40 [ 2.255152] vmci_guest_init+0x14/0x16 [ 2.255154] vmci_drv_init+0x31/0xbf [ 2.255155] do_one_initcall+0x46/0x1a0 [ 2.255157] ? repair_env_string+0x12/0x54 [ 2.255160] ? parse_args+0x2c1/0x580 [ 2.255162] kernel_init_freeable+0x143/0x1c1 [ 2.255164] ? rest_init+0x70/0x70 [ 2.255166] kernel_init+0x10/0x100 [ 2.255167] ? schedule_tail+0x11/0x50 [ 2.255169] ? rest_init+0x70/0x70 [ 2.255172] ret_from_fork+0x21/0x2c [ 2.255177] ---[ end trace a1a119af829507de ]--- [ 2.255211] ------------[ cut here ]------------ [ 2.255216] WARNING: CPU: 6 PID: 1 at drivers/pci/msi.c:966 __pci_enable_msix+0x475/0x4d0 [ 2.255217] Modules linked in: [ 2.255219] CPU: 6 PID: 1 Comm: swapper/0 Tainted: G W 4.11.0-rc1+ #227 [ 2.255221] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015 [ 2.255221] Call Trace: [ 2.255224] dump_stack+0x58/0x73 [ 2.255226] __warn+0xea/0x110 [ 2.255228] ? __pci_enable_msix+0x475/0x4d0 [ 2.255229] warn_slowpath_null+0x2a/0x30 [ 2.255231] __pci_enable_msix+0x475/0x4d0 [ 2.255234] pci_alloc_irq_vectors_affinity+0xcc/0x170 [ 2.255237] vmci_guest_probe_device+0x4e8/0x7a0 [ 2.255238] ? refcount_inc+0xb/0x40 [ 2.255241] pci_device_probe+0x83/0x100 [ 2.255243] ? devices_kset_move_last+0x57/0xc0 [ 2.255244] ? sysfs_create_link+0x25/0x50 [ 2.255247] driver_probe_device+0x291/0x470 [ 2.255249] ? pci_match_device+0xde/0x100 [ 2.255251] __driver_attach+0xe9/0xf0 [ 2.255252] ? refcount_dec_and_test+0xf/0x20 [ 2.255254] ? klist_next+0x63/0xd0 [ 2.255256] ? driver_probe_device+0x470/0x470 [ 2.255258] bus_for_each_dev+0x57/0xa0 [ 2.255259] driver_attach+0x1e/0x20 [ 2.255261] ? driver_probe_device+0x470/0x470 [ 2.255263] bus_add_driver+0x17f/0x270 [ 2.255266] driver_register+0x5d/0xf0 [ 2.255268] ? vmballoon_init+0x151/0x151 [ 2.255271] __pci_register_driver+0x33/0x40 [ 2.255273] vmci_guest_init+0x14/0x16 [ 2.255275] vmci_drv_init+0x31/0xbf [ 2.255277] do_one_initcall+0x46/0x1a0 [ 2.255279] ? repair_env_string+0x12/0x54 [ 2.255281] ? parse_args+0x2c1/0x580 [ 2.255283] kernel_init_freeable+0x143/0x1c1 [ 2.255285] ? rest_init+0x70/0x70 [ 2.255287] kernel_init+0x10/0x100 [ 2.255288] ? schedule_tail+0x11/0x50 [ 2.255290] ? rest_init+0x70/0x70 [ 2.255291] ret_from_fork+0x21/0x2c [ 2.255293] ---[ end trace a1a119af829507df ]--- [ 2.255327] vmw_vmci 0000:00:07.7: Driver probe function unexpectedly returned 2 [ 2.255348] Guest personality initialized and is inactive [ 2.255399] VMCI host device registered (name=vmci, major=10, minor=61) [ 2.255400] Initialized host personality
