After upgrade to 4.5.0-rc3 I've got following stack trace, never seen that before: ================================================================================ Feb 08 22:58:56 x kernel: UBSAN: Undefined behaviour in drivers/usb/host/ehci-hub.c:873:47 Feb 08 22:58:56 x kernel: index -1 is out of range for type 'u32 [1]' Feb 08 22:58:56 x kernel: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.5.0-rc3 #98 Feb 08 22:58:56 x kernel: Hardware name: LENOVO 20BSCTO1WW/20BSCTO1WW, BIOS N14ET32W (1.10 ) 08/13/2015 Feb 08 22:58:56 x kernel: 0000000000000000 0000000084b750fa ffff880224deb358 ffffffff81832ca4 Feb 08 22:58:56 x kernel: ffffffffffffffff 0000000084b750fa ffff880224deb380 ffffffffffffffff Feb 08 22:58:56 x kernel: ffff880224deb370 ffffffff818a6360 ffffffff833ea920 ffff880224deb3c8 Feb 08 22:58:56 x kernel: Call Trace: Feb 08 22:58:56 x kernel: [<ffffffff81832ca4>] dump_stack+0xaf/0x10c Feb 08 22:58:56 x kernel: [<ffffffff818a6360>] ubsan_epilogue+0x14/0x56 Feb 08 22:58:56 x kernel: [<ffffffff818a6c47>] __ubsan_handle_out_of_bounds+0x86/0xb3 Feb 08 22:58:56 x kernel: [<ffffffff81e65a88>] ehci_hub_control+0xcf/0x141e Feb 08 22:58:56 x kernel: [<ffffffff81e35a24>] rh_call_control+0xaa6/0xcf1 Feb 08 22:58:56 x kernel: [<ffffffff81180000>] ? hib_wait_io+0x64/0x132 Feb 08 22:58:56 x kernel: [<ffffffff81d0207d>] ? dev_vprintk_emit+0x391/0x3be Feb 08 22:58:56 x kernel: [<ffffffff81e3701b>] usb_hcd_submit_urb+0x318/0x592 Feb 08 22:58:56 x kernel: [<ffffffff81e3a0fc>] usb_submit_urb+0xc26/0xc50 Feb 08 22:58:56 x kernel: [<ffffffff81e3c134>] usb_start_wait_urb+0xb1/0x198 Feb 08 22:58:56 x kernel: [<ffffffff81e390f2>] ? usb_alloc_urb+0x21/0x6a Feb 08 22:58:56 x kernel: [<ffffffff81e3c714>] usb_control_msg+0x1c5/0x21d Feb 08 22:58:56 x kernel: [<ffffffff81e2f635>] hub_probe+0x8ed/0x18cb Feb 08 22:58:56 x kernel: [<ffffffff81129fbb>] ? get_parent_ip+0x14/0x6d Feb 08 22:58:56 x kernel: [<ffffffff81e43d0d>] usb_probe_interface+0x362/0x48e Feb 08 22:58:56 x kernel: [<ffffffff81d0aa47>] driver_probe_device+0x392/0x719 Feb 08 22:58:56 x kernel: [<ffffffff81d0b546>] __device_attach_driver+0x1bd/0x1cf Feb 08 22:58:56 x kernel: [<ffffffff81d0b389>] ? device_release_driver+0x4c/0x4c Feb 08 22:58:56 x kernel: [<ffffffff81d06721>] bus_for_each_drv+0x136/0x165 Feb 08 22:58:56 x kernel: [<ffffffff81d0a56b>] __device_attach+0x148/0x23a Feb 08 22:58:56 x kernel: [<ffffffff81d0b572>] device_initial_probe+0x1a/0x23 Feb 08 22:58:56 x kernel: [<ffffffff81d089e2>] bus_probe_device+0x98/0x1bc Feb 08 22:58:56 x kernel: [<ffffffff81d03f8e>] device_add+0x914/0xc99 Feb 08 22:58:56 x kernel: [<ffffffff81e3eca0>] usb_set_configuration+0xee2/0xfc8 Feb 08 22:58:56 x kernel: [<ffffffff81e55e40>] generic_probe+0x83/0xcf Feb 08 22:58:56 x kernel: [<ffffffff81e43edd>] usb_probe_device+0xa4/0xb0 Feb 08 22:58:56 x kernel: [<ffffffff81d0aa47>] driver_probe_device+0x392/0x719 Feb 08 22:58:56 x kernel: [<ffffffff81d0b546>] __device_attach_driver+0x1bd/0x1cf Feb 08 22:58:56 x kernel: [<ffffffff81d0b389>] ? device_release_driver+0x4c/0x4c Feb 08 22:58:56 x kernel: [<ffffffff81d06721>] bus_for_each_drv+0x136/0x165 Feb 08 22:58:56 x kernel: [<ffffffff81d0a56b>] __device_attach+0x148/0x23a Feb 08 22:58:56 x kernel: [<ffffffff81d0b572>] device_initial_probe+0x1a/0x23 Feb 08 22:58:56 x kernel: [<ffffffff81d089e2>] bus_probe_device+0x98/0x1bc Feb 08 22:58:56 x kernel: [<ffffffff81d03f8e>] device_add+0x914/0xc99 Feb 08 22:58:56 x kernel: [<ffffffff81a885f4>] ? add_device_randomness+0x206/0x244 Feb 08 22:58:56 x kernel: [<ffffffff81e2b27f>] usb_new_device+0xb8c/0xe1e Feb 08 22:58:56 x kernel: [<ffffffff81e34ad0>] usb_add_hcd+0xb2d/0xfbd Feb 08 22:58:56 x kernel: [<ffffffff81e5af29>] usb_hcd_pci_probe+0x754/0xab9 Feb 08 22:58:56 x kernel: [<ffffffff823497a6>] ? _raw_spin_unlock_irqrestore+0x7d/0xbd Feb 08 22:58:56 x kernel: [<ffffffff81e744ef>] ehci_pci_probe+0x4e/0x5a Feb 08 22:58:56 x kernel: [<ffffffff818c9edf>] pci_device_probe+0x1a7/0x290 Feb 08 22:58:56 x kernel: [<ffffffff81d0a9e1>] driver_probe_device+0x32c/0x719 Feb 08 22:58:56 x kernel: [<ffffffff81d0af06>] __driver_attach+0x138/0x192 Feb 08 22:58:56 x kernel: [<ffffffff81d0adce>] ? driver_probe_device+0x719/0x719 Feb 08 22:58:56 x kernel: [<ffffffff81d06cf2>] bus_for_each_dev+0xf4/0x11e Feb 08 22:58:56 x kernel: [<ffffffff81d09482>] driver_attach+0x4a/0x54 Feb 08 22:58:56 x kernel: [<ffffffff81d0907f>] bus_add_driver+0x23c/0x45f Feb 08 22:58:56 x kernel: [<ffffffff81d0ca3f>] driver_register+0x1f6/0x278 Feb 08 22:58:56 x kernel: [<ffffffff818c655a>] __pci_register_driver+0x115/0x139 Feb 08 22:58:56 x kernel: [<ffffffff83825961>] ? ehci_hcd_init+0x9f/0x9f Feb 08 22:58:56 x kernel: [<ffffffff838259e9>] ehci_pci_init+0x88/0x91 Feb 08 22:58:56 x kernel: [<ffffffff81000563>] do_one_initcall+0x217/0x2ee Feb 08 22:58:56 x kernel: [<ffffffff837a5f00>] ? do_early_param+0xb1/0x124 Feb 08 22:58:56 x kernel: [<ffffffff837a7443>] kernel_init_freeable+0x4b2/0x5e2 Feb 08 22:58:56 x kernel: [<ffffffff82339df4>] ? rest_init+0xdb/0xdb Feb 08 22:58:56 x kernel: [<ffffffff82339e09>] kernel_init+0x15/0x16b Feb 08 22:58:56 x kernel: [<ffffffff8234a19f>] ret_from_fork+0x3f/0x70 Feb 08 22:58:56 x kernel: [<ffffffff82339df4>] ? rest_init+0xdb/0xdb Feb 08 22:58:56 x kernel: ================================================================================ Please let me know if you need any other information information
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