Random Kernel Panic on Dreamplug (FS related)
Ronald Klop
ronald-lists at klop.ws
Sun Sep 28 12:41:23 UTC 2014
On Sun, 28 Sep 2014 11:55:37 +0200, Mattia Rossi
<mattia.rossi.mate at gmail.com> wrote:
> On 27/09/14 10:57, Ronald Klop wrote:
>> On Fri, 26 Sep 2014 14:19:08 +0200, Mattia Rossi
>> <mattia.rossi.mailinglists at gmail.com> wrote:
>>
>>> This might be part of the weird FFS issues the Dreamplug has and
>>> no-one knows why they're happening.
>>
>> I don't know if it is related, but my Sheevaplug also has issues with
>> ffs while running 11-CURRENT. The fs gets corrupted or something. Which
>> is not fixed by fsck. Every run of fsck finds more unlinked files and
>> removes them. Also files which are stable on the fs since installation
>> like /lib/*.
> I've had a discussion with Ian Lepore about this, and he actually found
> out that fsck is broken.
>> This ffs corruption + panic mostly happened while installing ports on
>> the first day of operation.
>>
>> But, the day before yesterday I compiled with gcc again instead of
>> clang and it seems to run stable for 2 days now.
> This is interesting though.. How do I switch to gcc as compiler for
> world? I'd like to test that, and to see if it's really a clang problem.
I put this in the environment.
export WITH_GCC=yes
export WITH_GNUCXX=yes
export WITH_GCC_BOOTSTRAP=yes
export WITHOUT_CLANG=yes
export WITHOUT_CLANG_IS_CC=yes
export WITHOUT_CLANG_BOOTSTRAP=yes
Got that from this email:
http://lists.freebsd.org/pipermail/freebsd-arm/2014-August/009001.html
Regards,
Ronald.
>>
>> Unfortunately I don't have the backtraces of the crashes anymore.
>>
>> NB: running 11-CURRENT from usb-stick with ports mounted via nfs.
> Well, it's pretty much the same I have, only that the dreamplug has an
> internal sd card which is attached via usb. I have ports on nfs as well.
>>
>> Ronald.
>>
>>
>>> The panic occurred while running nsd-control reload (which should
>>> simply re-read a config file from disk). I was previously editing
>>> files without issues.
>>>
>>> Result is the following:
>>>
>>> vm_fault(0xc10a0000, d0238000, 2, 0) -> 2
>>> Fatal kernel mode data abort: 'Permission Fault (P)'
>>> trapframe: 0xde019898
>>> FSR=0000000f, FAR=d0238120, spsr=20000013
>>> r0 =d0238120, r1 =00000e60, r2 =00000000, r3 =00000000
>>> r4 =00000120, r5 =00000000, r6 =c3f3f6c0, r7 =00001000
>>> r8 =c443e880, r9 =00000000, r10=c3d69000, r11=de019a20
>>> r12=d0238120, ssp=de0198e8, slr=c0d53828, pc =c0de521c
>>>
>>> [ thread pid 21116 tid 100073 ]
>>> Stopped at memset+0x48: undge 0xa0cc20f8
>>> db>
>>> db> bt
>>> Tracing pid 21116 tid 100073 td 0xc3e97000
>>> db_trace_self() at db_trace_self
>>> pc = 0xc0dd5418 lr = 0xc094f8a8 (db_hex2dec+0x490)
>>> sp = 0xde0195a0 fp = 0xde0195b8
>>> r10 = 0xc0f5e8c8
>>> db_hex2dec() at db_hex2dec+0x490
>>> pc = 0xc094f8a8 lr = 0xc094f260 (db_command_loop+0x300)
>>> sp = 0xde0195c0 fp = 0xde019660
>>> r4 = 0x00000000 r5 = 0x00000000
>>> r6 = 0x00000000
>>> db_command_loop() at db_command_loop+0x300
>>> pc = 0xc094f260 lr = 0xc094efb0 (db_command_loop+0x50)
>>> sp = 0xde019668 fp = 0xde019678
>>> r4 = 0xc0e2dfe4 r5 = 0xc0e4402e
>>> r6 = 0xc0f5e8b4 r7 = 0xc0ef62b8
>>> r8 = 0xc0f52754 r9 = 0xc0f52750
>>> r10 = 0xc3e97000
>>> db_command_loop() at db_command_loop+0x50
>>> pc = 0xc094efb0 lr = 0xc09519ec (X_db_symbol_values+0x250)
>>> sp = 0xde019680 fp = 0xde0197a0
>>> r4 = 0x00000000 r5 = 0xc0f5e8c0
>>> r6 = 0xc0f52778
>>> X_db_symbol_values() at X_db_symbol_values+0x250
>>> pc = 0xc09519ec lr = 0xc0b37b08 (kdb_trap+0xc4)
>>> sp = 0xde0197a8 fp = 0xde0197c8
>>> r4 = 0x00000000 r5 = 0x0000000f
>>> r6 = 0xc0f52778 r7 = 0xc0ef62b8
>>> kdb_trap() at kdb_trap+0xc4
>>> pc = 0xc0b37b08 lr = 0xc0de7c60 (data_abort_handler+0x7f8)
>>> sp = 0xde0197d0 fp = 0xde0197e8
>>> r4 = 0xde019898 r5 = 0x0000000f
>>> r6 = 0x600000d3 r7 = 0xd0238120
>>> r8 = 0x00000000 r9 = 0xc0f648d4
>>> r10 = 0xc3e97000
>>> data_abort_handler() at data_abort_handler+0x7f8
>>> pc = 0xc0de7c60 lr = 0xc0de7a28 (data_abort_handler+0x5c0)
>>> sp = 0xde0197f0 fp = 0xde019890
>>> r4 = 0xc10a0000 r5 = 0x00000013
>>> r6 = 0xde019eb0 r7 = 0x00000002
>>> data_abort_handler() at data_abort_handler+0x5c0
>>> pc = 0xc0de7a28 lr = 0xc0dd711c (exception_exit)
>>> sp = 0xde019898 fp = 0xde019a20
>>> r4 = 0xffffffff r5 = 0xffff1004
>>> r6 = 0xc3f3f6c0 r7 = 0x00001000
>>> r8 = 0xc443e880 r9 = 0x00000000
>>> r10 = 0xc3d69000
>>> exception_exit() at exception_exit
>>> pc = 0xc0dd711c lr = 0xc0d53828 (ffs_truncate+0xaa8)
>>> sp = 0xde0198e8 fp = 0xde019a20
>>> r0 = 0xd0238120 r1 = 0x00000e60
>>> r2 = 0x00000000 r3 = 0x00000000
>>> r4 = 0x00000120 r5 = 0x00000000
>>> r6 = 0xc3f3f6c0 r7 = 0x00001000
>>> r8 = 0xc443e880 r9 = 0x00000000
>>> r10 = 0xc3d69000 r12 = 0xd0238120
>>> memset() at memset+0x48
>>> pc = 0xc0de521c lr = 0xc0d53828 (ffs_truncate+0xaa8)
>>> sp = 0xde0198e8 fp = 0xde019a20
>>> Unwind failure (no registers changed)
>>>
>>> The sad thing is, that with fsck broken for the dreamplug, I have to
>>> re-format the disk, reinstall everything and recreate the config files
>>> which I didn't manage to copy to a safe place beforehand :-(
>>>
>>> Before I do that I'll leave the system in debugging mode for a few
>>> days, in case someone can help and needs some more information.
>>>
>>> Cheers,
>>>
>>> Mat
>>> _______________________________________________
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