I’ve got a BeagleBone Black Rev C, with a canbus cape. It works great but occasionally the BeagleBone will freeze up during boot up and I’ve found that it’s when the can modules are being loaded. I have been able to capture some information within /var/log/messages, but it’s pretty much greek to me! Does anybody have any insight?
[541.268448] Modules linked in: can_raw can g_serial libcomposite c_can_platform c_can can_dev
[541.277469] [<c0013230>] (unwind_backtrace+0x0/0xe0) from [<c05f9ca0>] (__schedule_bug+0x48/0x5c)
[541.286737] [<c05f9ca0>] (__schedule_bug+0x48/0x5c) from [<c05ffecc>] (__schedule+0x64/0x6d8)
[541.295686] [<c05ffecc>] (__schedule+0x64/0x6d8) from [<c00651f4>] (__cond_resched+0x24/0x34)
[541.304592] [<c00651f4>] (__cond_resched+0x24/0x34) from [<c06005cc>] (_cond_resched+0x34/0x44)
[541.313674] [<c06005cc>] (_cond_resched+0x34/0x44) from [<c039fca4>] (__pm_runtime_resume+0x2c/0x80)
[541.323215] [<c039fca4>] (__pm_runtime_resume+0x2c/0x80) from [<bf007190>] (c_can_get_berr_counter+0x24/0x60 [c_can])
[541.334293] [<bf007190>] (c_can_get_berr_counter+0x24/0x60 [c_can]) from [<bf0073f0>] (c_can_handle_state_change+0x30/0x164 [c_can])
[541.346721] [<bf0073f0>] (c_can_handle_state_change+0x30/0x164 [c_can]) from [<bf007958>] (c_can_poll+0xd8/0x7fc [c_can])
[541.358155] [<bf007958>] (c_can_poll+0xd8/0x7fc [c_can]) from [<c051fc30>] (net_rx_action+0x60/0x1d4)
[541.367783] [<c051fc30>] (net_rx_action+0x60/0x1d4) from [<c0042698>] (__do_softirq+0x110/0x238)
[541.376952] [<c0042698>] (__do_softirq+0x110/0x238) from [<c0042a70>] (irq_exit+0x44/0x84)
[541.385582] [<c0042a70>] (irq_exit+0x44/0x84) from [<c000de5c>] (handle_IRQ+0x68/0x8c)
[541.393847] [<c000de5c>] (handle_IRQ+0x68/0x8c) from [<c0008754>] (omap3_intc_handle_irq+0x60/0x74)
[541.403287] [<c0008754>] (omap3_intc_handle_irq+0x60/0x74) from [<c0601680>] (__irq_svc+0x40/0x50)
[541.412627] Exception stack(0xdf779f18 to 0xdf779f60)
[541.417899] 9f00: df736040 00000458
[541.426426] 9f20: 00000000 00000000 00000010 df3560c8 00000002 de9d1060 00000000 00000000
[541.434956] 9f40: 00000000 00000000 0050a000 df779f60 c012934c c00f40ec 60000013 ffffffff
[541.443497] [<c0601680>] (__irq_svc+0x40/0x50) from [<c00f40ec>] (vfs_write+0x130/0x178)
[541.451943] [<c00f40ec>] (vfs_write+0x130/0x178) from [<c00f4344>] (sys_write+0x3c/0x60)
[541.460385] [<c00f4344>] (sys_write+0x3c/0x60) from [<c000d580>] (ret_fast_syscall+0x0/0x30)