Thank you for the quick response. I was able to switch to the head of the master branch and duplicate the issue as well, see below. The reason I added the USB group was due to the lines from the boot log: [ 0.195398] [usb_manager]: CONFIG_USB_SW_SUNXI_USB0_OTG [ 0.202738] WRN:L268(drivers/usb/sunxi_usb/manager/usb_manager.c):ERR: usbc0 port_type(-16777249) is unkown [ 0.211219] WRN:L426(drivers/usb/sunxi_usb/manager/usb_manager.c):ERR: check_usb_board_info failed [ 0.218891] WRN:L480(drivers/usb/sunxi_usb/manager/usb_manager.c):ERR: get_usb_cfg This seems to be where things go wrong. This error does not happen when the kernel is not configured with CAN. I assume you are correct that the USB code section is not causing this, and that the CAN module is corrupting the usb config before it loaded. ////////////////////////////////////////////////////////////////////////////////////////////// ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver <1>Unable to handle kernel paging request at virtual address f19f06dc [ 1.284082] Unable to handle kernel paging request at virtual address f19f06dc <1>pgd = c0004000 [ 1.292950] pgd = c0004000 <1>[f19f06dc] *pgd=00000000[ 1.298001] [f19f06dc] *pgd=00000000 <0>Internal error: Oops: 5 [#1] PREEMPT ARM [ 1.305676] Internal error: Oops: 5 [#1] PREEMPT ARM <d>Modules linked in:[ 1.312462] Modules linked in: CPU: 0 Not tainted (3.4.103+ #1) [ 1.319010] CPU: 0 Not tainted (3.4.103+ #1) PC is at sunxi_gpio_request_array.part.4+0xdc/0x4c4 [ 1.328234] PC is at sunxi_gpio_request_array.part.4+0xdc/0x4c4 LR is at sunxi_gpio_request_array.part.4+0x4c0/0x4c4 [ 1.338836] LR is at sunxi_gpio_request_array.part.4+0x4c0/0x4c4 pc : [<c0029cac>] lr : [<c002a090>] psr: 20000013 sp : df827ef0 ip : b1b08738 fp : b1b08740 [ 1.353684] pc : [<c0029cac>] lr : [<c002a090>] psr: 20000013 [ 1.353689] sp : df827ef0 ip : b1b08738 fp : b1b08740 r10: 71c20780 r9 : c07f0838 r8 : c0605fe0 [ 1.369066] r10: 71c20780 r9 : c07f0838 r8 : c0605fe0 r7 : c092900c r6 : 00000001 r5 : 00000058 r4 : c0879a08 [ 1.379493] r7 : c092900c r6 : 00000001 r5 : 00000058 r4 : c0879a08 r3 : 71c20794 r2 : b1b08748 r1 : 00000000 r0 : f19f0700 [ 1.391220] r3 : 71c20794 r2 : b1b08748 r1 : 00000000 r0 : f19f0700 Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [ 1.403729] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel Control: 10c5387d Table: 40004019 DAC: 00000015 [ 1.415458] Control: 10c5387d Table: 40004019 DAC: 00000015 ////////////////////////////////////////////////////////////////////////////////////////////// Thanks, Jesse -----Original Message----- From: Felipe Balbi [mailto:balbi@xxxxxx] Sent: Tuesday, May 26, 2015 12:26 PM To: Jesse James Cc: linux-can@xxxxxxxxxxxxxxx; linux-usb@xxxxxxxxxxxxxxx Subject: Re: PROBLEM: Attempt to Enable CAN Network with MCP251x SPI Interface Results in Kernel Panics at Boot On Tue, May 26, 2015 at 05:21:23PM +0000, Jesse James wrote: > Hello, > > I recently purchased a A10-OLinuXino-LIME from > https://www.olimex.com/. ; This board uses the Allwinner A10 Cortex-8 > chipset. Using the kernel from https://github.com/linux-sunxi and > commit e37d760b363888f3a65cd6455c99a75cac70a7b8, I was able to this commit is not upstream, you need to ask for support from whoever maintains linux-sunxi > successfully build and run kernel 3.4.90+ on the above mentioned yeah, this kernel is pretty old, you really need to contact linux-sunxi maintainers. > board. > > I attempted to enable the CAN Network with the MCP251x SPI interface > enabled, config file is attached, and now the kernel "panics" at boot. > The short hand looks like the following: (Full boot log is > attached) > > ////////////////////////////////////////////////////////////////////// > ///////////////////////// > <6>ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ > 1.272001] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver > <1>Unable to handle kernel paging request at virtual address 71c007b4 > [ 1.284403] Unable to handle kernel paging request at virtual > address 71c007b4 <1>pgd = c0004000 [ 1.293294] pgd = c0004000 > <1>[71c007b4] *pgd=00000000[ 1.298345] [71c007b4] *pgd=00000000 > > <0>Internal error: Oops: 5 [#1] PREEMPT ARM [ 1.306038] Internal > error: Oops: 5 [#1] PREEMPT ARM <d>Modules linked in:[ 1.312825] > Modules linked in: > > CPU: 0 Not tainted (3.4.90+ #8) > [ 1.319284] CPU: 0 Not tainted (3.4.90+ #8) PC is at > sunxi_gpio_request_array.part.4+0xdc/0x4c4 this isn't even a USB bug. Unless you can reproduce this problem with v4.0 or v4.1-rc5, then there's nothing this forum can do to help you out, sorry. -- balbi -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
