panic while loading usb.ko on 4.11-PRE

[Erwin Lansing]

Bad news everyone!

Let me just explain by pasting from cli, logs and gdb.

First error:

bamse# kldload uplcom
kldload: can't load uplcom: Exec format error

Dec 22 14:23:22 bamse /kernel: link_elf: symbol usbd_abort_pipe
undefined

However:
bamse# kldload usb
bamse# kldload uplcom

ucom0: Prolific Technology PL2303 Serial adapter (ATEN/IOGEAR UC232A),
rev 1.10/ 2.02, addr 2

bamse# cu -l ucom0
Connected.


Second, a panic during 'kldload usb':

uhci0: <Intel 82801EB (ICH5) USB controller USB-A> port 0x1440-0x145f
irq 2 at device 29.0 on pci0
usb0: <Intel 82801EB (ICH5) USB controller USB-A> on uhci0
usb0: USB revision 1.0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1: <Intel 82801EB (ICH5) USB controller USB-B> port 0x1460-0x147f
irq 5 at device 29.1 on pci0
usb1: <Intel 82801EB (ICH5) USB controller USB-B> on uhci1
usb1: USB revision 1.0
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2: <Intel 82801EB (ICH5) USB controller USB-C> port 0x1480-0x149f
irq 10 at device 29.2 on pci0


Fatal trap 12: page fault while in kernel mode
mp_lock = 00000003; cpuid = 0; lapic.id = 00000000
fault virtual address   = 0x4
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc220e4ba
stack pointer           = 0x10:0xd703dc30
frame pointer           = 0x10:0xd703dc34
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 3
current process         = 634 (kldload)
interrupt mask          = bio  <- SMP: XXX
trap number             = 12
panic: page fault
mp_lock = 00000003; cpuid = 0; lapic.id = 00000000
boot() called on cpu#0


Backtrace at: http://people.freebsd.org/~erwin/usb-panic.txt

Unfortunately, I'll be leaving for Christmas holidays tomorrow and won't
have physical access to this machine until the 29th, but I'll be able to
log in the meantime.

-erwin



-- 
                    _._     _,-'""`-._
Erwin Lansing      (,-.`._,'(       |\`-/|    erwin at lansing.dk
http://droso.org       `-.-' \ )-`( , o o)    erwin at FreeBSD.org
                    -bf-      `-    \`_`"'-
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