[Bug 209725] Fatal trap 12 panic: page fault on kern_reboot with wctdm24xxp.ko

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Tue May 24 02:46:53 UTC 2016


            Bug ID: 209725
           Summary: Fatal trap 12 panic: page fault on kern_reboot with
           Product: Base System
           Version: 10.3-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: paulo at nlink.com.br
                CC: freebsd-amd64 at FreeBSD.org
                CC: freebsd-amd64 at FreeBSD.org

On FreeBSD 10.3-RELEASE running with two digium cards and working fine:

wctdm24xxp0 at pci0:7:0:0: class=0x020000 card=0x2400d161 chip=0x2400d161 rev=0x11
te12xp0 at pci0:7:2:0:     class=0x020000 card=0x8001d161 chip=0x8001d161 rev=0x11

when we shuting down this system halts:

Stopping asterisk
wctdm24xxp0: <6>Freed a Wildcard
dahdi: disable_span: span 2

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address   = 0x28
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff80937699
stack pointer           = 0x28:0xfffffe00506817e0
frame pointer           = 0x28:0xfffffe0050681800
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 931 (kldunload)
trap number             = 12
panic: page fault
cpuid = 1
KDB: stack backtrace:
#0 0xffffffff8098e390 at kdb_backtrace+0x60
#1 0xffffffff80951066 at vpanic+0x126
#2 0xffffffff80950f33 at panic+0x43
#3 0xffffffff80d55f7b at trap_fatal+0x36b
#4 0xffffffff80d5627d at trap_pfault+0x2ed
#5 0xffffffff80d558fa at trap+0x47a
#6 0xffffffff80d3b8d2 at calltrap+0x8
#7 0xffffffff81c7cf61 at wctdm_back_out_gracefully+0x401
#8 0xffffffff81c7cb4d at wctdm_release+0xad
#9 0xffffffff81c7ca07 at wctdm_remove_one+0x2a7
#10 0xffffffff81c7c748 at wctdm_device_detach+0x38
#11 0xffffffff80983062 at device_detach+0x52
#12 0xffffffff809828bb at devclass_driver_deleted+0x6b
#13 0xffffffff809827df at devclass_delete_driver+0x7f
#14 0xffffffff80987413 at driver_module_handler+0x43
#15 0xffffffff80935c8e at module_unload+0x4e
#16 0xffffffff8092b2da at linker_file_unload+0x29a
#17 0xffffffff8092c393 at kern_kldunload+0xd3
Uptime: 7m58s

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