Re: 8.0RC1 - Kernel panic when loading a ndisgen-generated module (rtl8180_sys)

On 9/22/09, Raphael Kubo da Costa <kubito_at_gmail.com> wrote:
> 2009/9/22 Paul B. Mahol <onemda_at_gmail.com>:
>> On 9/22/09, Raphael Kubo da Costa <kubito_at_gmail.com> wrote:
>>> Hi there,
>>>
>>> I'm not sure this is the proper place to send this, so please tell me
>>> if I should send this mail to another mailing list or file a PR about
>>> this.
>>>
>>> I used freebsd-update to upgrade from 7.2-RELEASE-p3 to 8.0-RC1.
>>> Everything went fine, but I had to regenerate my wireless card
>>> (Realtek RTL8180L) module with ndisgen. However, when I load the
>>> generated module with kldload I get a kernel panic and the system
>>> reboots. I also have a 67mb vmcore; I can try to make it available if
>>> needed.
>>
>> You are saying that it worked without problems on 7.2?
> Yes, until this upgrade everything worked fine.
>
>> There were very little changes with sys/compat/ndis between that two
>> versions
>> so if problem really exist it must be somewhere in if_ndis module.
>> Are you sure that complete world and kernel are in sync?
> I think so; I've followed
> http://www.daemonology.net/blog/2009-07-11-freebsd-update-to-8.0-beta1.html
> and ran "freebsd-update -r 8.0-RC1 upgrade", "freebsd-update install",
> rebooted, reran "freebsd-update install", rebooted and ran ndisgen.

Once more, ndisgen(ndiscvt) requires correct kernel sources to make
working kernel module.

For example you _must_ have 8.0-RC1 in /src and not some other version.

>
>> And you really did loaded regenerated module?
> Yes, I ran ndisgen and used kldload to load the generated module and
> besides I copied the module to /boot/modules and tried loading it
> after the kernel panics.
>
>>>
>>> I'll paste some sections from core.txt; I can attach the whole file if
>>> you
>>> want.
>>>
>>> -----------
>>>
>>> Unread portion of the kernel message buffer:
>>>
>>>
>>> Fatal trap 12: page fault while in kernel mode
>>> cpuid = 0; apic id = 00
>>> fault virtual address = 0xc4ea831a
>>> fault code            = supervisor read, page not present
>>> instruction pointer   = 0x20:0xc4df96b3
>>> stack pointer         = 0x28:0xe3744a44
>>> frame pointer         = 0x28:0xe3744aac
>>> code segment          = base 0x0, limit 0xfffff, type 0x1b
>>>                       = DPL 0, pres 1, def32 1, gran 1
>>> processor eflags      = interrupt enabled, resume, IOPL = 0
>>> current process               = 1110 (ifconfig)
>>> trap number           = 12
>>> panic: page fault
>>> cpuid = 0
>>> Uptime: 36s
>>> Physical memory: 883 MB
>>> Dumping 67 MB: 52 36 20 4
>>>
>>> Reading symbols from /boot/kernel/snd_hda.ko...Reading symbols from
>>> /boot/kernel/snd_hda.ko.symbols...done.
>>> done.
>>> Loaded symbols for /boot/kernel/snd_hda.ko
>>> Reading symbols from /boot/kernel/sound.ko...Reading symbols from
>>> /boot/kernel/sound.ko.symbols...done.
>>> done.
>>> Loaded symbols for /boot/kernel/sound.ko
>>> Reading symbols from /boot/kernel/linprocfs.ko...Reading symbols from
>>> /boot/kernel/linprocfs.ko.symbols...done.
>>> done.
>>> Loaded symbols for /boot/kernel/linprocfs.ko
>>> Reading symbols from /boot/kernel/linux.ko...Reading symbols from
>>> /boot/kernel/linux.ko.symbols...done.
>>> done.
>>> Loaded symbols for /boot/kernel/linux.ko
>>> Reading symbols from /boot/kernel/reiserfs.ko...Reading symbols from
>>> /boot/kernel/reiserfs.ko.symbols...done.
>>> done.
>>> Loaded symbols for /boot/kernel/reiserfs.ko
>>> Reading symbols from /boot/kernel/logo_saver.ko...Reading symbols from
>>> /boot/kernel/logo_saver.ko.symbols...done.
>>> done.
>>> Loaded symbols for /boot/kernel/logo_saver.ko
>>> Reading symbols from /boot/modules/rtl8180_sys.ko...done.
>>> Loaded symbols for /boot/modules/rtl8180_sys.ko
>>> Reading symbols from /boot/kernel/if_ndis.ko...Reading symbols from
>>> /boot/kernel/if_ndis.ko.symbols...done.
>>> done.
>>> Loaded symbols for /boot/kernel/if_ndis.ko
>>> Reading symbols from /boot/kernel/ndis.ko...Reading symbols from
>>> /boot/kernel/ndis.ko.symbols...done.
>>> done.
>>> Loaded symbols for /boot/kernel/ndis.ko
>>> #0  doadump () at pcpu.h:246
>>> 246   pcpu.h: No such file or directory.
>>>       in pcpu.h
>>> (kgdb) #0  doadump () at pcpu.h:246
>>> #1  0xc08823c7 in boot (howto=260) at
>>> /usr/src/sys/kern/kern_shutdown.c:416
>>> #2  0xc08826b9 in panic (fmt=Variable "fmt" is not available.
>>> ) at /usr/src/sys/kern/kern_shutdown.c:579
>>> #3  0xc0bb346c in trap_fatal (frame=0xe3744a04, eva=3303703322)
>>>     at /usr/src/sys/i386/i386/trap.c:933
>>> #4  0xc0bb36f0 in trap_pfault (frame=0xe3744a04, usermode=0,
>>> eva=3303703322)
>>>     at /usr/src/sys/i386/i386/trap.c:846
>>> #5  0xc0bb40d5 in trap (frame=0xe3744a04) at
>>> /usr/src/sys/i386/i386/trap.c:528
>>> #6  0xc0b96a4b in calltrap () at /usr/src/sys/i386/i386/exception.s:165
>>> #7  0xc4df96b3 in ndis_rtl8180_sys_drv_data_start ()
>>>    from /boot/modules/rtl8180_sys.ko
>>> Previous frame inner to this frame (corrupt stack?)
>>> (kgdb)
>>>
>>>
>>> ------ Last lines from dmesg --------
>>> Tue Sep 22 01:02:49 BRT 2009
>>> Sep 22 01:02:55 borges login: ROOT LOGIN (root) ON ttyv0
>>> warning: KLD '/boot/modules/rtl8180_sys.ko' is newer than the
>>> linker.hints
>>> file
>>> ndis0: <Realtek RTL8180 Wireless LAN (Mini-)PCI NIC> port
>>> 0xe800-0xe8ff mem 0xdffffc00-0xdffffcff irq 16 at device 6.0 on pci1
>>> ndis0: [ITHREAD]
>>> ndis0: NDIS API version: 5.1
>>> ifa_add_loopback_route: insertion failed
>>
>> Try to enable debug.ndis sysctl.
> And then paste the same sections here?

You can post newly introduced messages.(aka diff)
>>>
>>> Fatal trap 12: page fault while in kernel mode
>>> cpuid = 0; apic id = 00
>>> fault virtual address = 0xc4ea831a
>>> fault code            = supervisor read, page not present
>>> instruction pointer   = 0x20:0xc4df96b3
>>> stack pointer         = 0x28:0xe3744a44
>>> frame pointer         = 0x28:0xe3744aac
>>> code segment          = base 0x0, limit 0xfffff, type 0x1b
>>>                       = DPL 0, pres 1, def32 1, gran 1
>>> processor eflags      = interrupt enabled, resume, IOPL = 0
>>> current process               = 1110 (ifconfig)
>>
>> What commands are to reproduce this?
> # kldload rtl8180_sys

But up there is ifconfig mentioned so I need exact way to reproduce
it because backtrace is misleading.

-- 
Paul