Date: Sat, 17 Dec 2011 18:46:23 +0000 From: Matthieu Kraus <matthieu.kraus@s2008.tu-chemnitz.de> To: Ian Lepore <freebsd@damnhippie.dyndns.org> Cc: freebsd-arm@freebsd.org Subject: Re: cesa patch issues Message-ID: <cone.1324147583.974458.1719.500@rlydontknow> References: <20111217151858.182523ch5m4bclw2@mail.tu-chemnitz.de> <1324143472.3268.147.camel@revolution.hippie.lan>
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vm_fault(0xc35789c8, 0, 2, 0) -> 1
Fatal kernel mode data abort: 'Translation Fault (P)'
trapframe: 0xd2069bb0
FSR=00000017, FAR=00000010, spsr=80000013
r0 =0000001f, r1 =00000000, r2 =00000000, r3 =00000004
r4 =00000000, r5 =00000000, r6 =00000000, r7 =c373d898
r8 =c3736000, r9 =00000000, r10=c3736000, r11=d2069c38
r12=00000000, ssp=d2069bfc, slr=c0c02f40, pc =c0c22d58
[ thread pid 1439 tid 100057 ]
Stopped at cpu_initclocks+0x3340: str r4, [r3, #0x00c]
Tracing pid 1439 tid 100057 td 0xc390f5c0
cpu_initclocks() at cpu_initclocks+0x3114
scp=0xc0c22b2c rlv=0xc0c246c0 (cpu_initclocks+0x4ca8)
rsp=0xd2069c3c rfp=0xd2069ca0
r10=0xc3736000 r9=0xc37410c0
r8=0xc374141c r7=0x00000000 r6=0x00000000 r5=0x00000000
r4=0xc373d898
cpu_initclocks() at cpu_initclocks+0x46e8
scp=0xc0c24100 rlv=0xc0ba9348 (crypto_freesession+0x20c)
rsp=0xd2069ca4 rfp=0xd2069cc4
r10=0xc3a3f000 r9=0xc3a16940
r8=0xc3731600 r7=0x00000000 r6=0x00000000 r5=0xc3a3d000
r4=0xc35d8600
crypto_freesession() at crypto_freesession+0x11c
scp=0xc0ba9258 rlv=0xc0ba9704 (crypto_dispatch+0x68)
rsp=0xd2069cc8 rfp=0xd2069ce0
r6=0xc3a3d000 r5=0x01000000
r4=0x00000006
crypto_dispatch() at crypto_dispatch+0x10
scp=0xc0ba96ac rlv=0xc0baa7cc (crypto_getreq+0xcec)
rsp=0xd2069ce4 rfp=0xd2069d80
r6=0xc3a3d000 r5=0xc3a16900
r4=0x00000000
crypto_getreq() at crypto_getreq+0x498
scp=0xc0ba9f78 rlv=0xc0af0a04 (kern_ioctl+0x2d8)
rsp=0xd2069d84 rfp=0xd2069db4
r10=0xc3a15c00 r9=0x00000000
r8=0xc390f5c0 r7=0x00000004 r6=0xc01c6367 r5=0x00000000
r4=0xc3731600
kern_ioctl() at kern_ioctl+0x10
scp=0xc0af073c rlv=0xc0af0b70 (sys_ioctl+0x114)
rsp=0xd2069db8 rfp=0xd2069de4
r10=0xc390f5c0 r8=0xc3731600
r7=0xd2069e40 r6=0x00000000 r5=0x0000001c r4=0xc01c6367
sys_ioctl() at sys_ioctl+0x10
scp=0xc0af0a6c rlv=0xc0c14a20 (swi_handler+0x268)
rsp=0xd2069de8 rfp=0xd2069ea8
r10=0x00000004 r8=0x00000000
r7=0xc3a14888 r6=0x00000000 r5=0xc390f5c0 r4=0x00000001
swi_handler() at swi_handler+0x10
scp=0xc0c147c8 rlv=0xc0c06b98 (swi_entry+0x3c)
rsp=0xd2069eac rfp=0xbfffe924
r8=0x20407038 r7=0x00000008
r6=0x00000008 r5=0x20407030 r4=0x00000001
Ian Lepore writes:
> On Sat, 2011-12-17 at 15:18 +0100, Matthieu Kraus wrote:
>> [...]
>> However I can't seem to get my modifications to work as I always get:
>>
>> vm_fault(0xc35789c8, 0, 2, 0) -> 1
>> Fatal kernel mode data abort: 'Translation Fault (P)'
>> trapframe: 0xd2069bb0
>> FSR=00000017, FAR=00000010, spsr=80000013
>> r0 =0000001f, r1 =00000000, r2 =00000000, r3 =00000004
>> r4 =00000000, r5 =00000000, r6 =00000000, r7 =c373d898
>> r8 =c3736000, r9 =00000000, r10=c3736000, r11=d2069c38
>> r12=00000000, ssp=d2069bfc, slr=c0c02f40, pc =c0c22d58
>>
>> [ thread pid 1439 tid 100057 ]
>> Stopped at cpu_initclocks+0x3340: str r4, [r3, #0x00c]
>>
>> I'm completely new to kernel development, so any hints on how to
>> further debug the issue (traces in ddb didn't seem very informational
>> to me) would be highly appreciated.
>>
>> kind regards,
>> Matthieu Kraus
>
> All that can be seen from what you posted is that the immediate cause of
> the error is a bad value in register r3. The ddb backtrace that wasn't
> helpful to you might contain clues that are meaningful to others; you
> should post it.
>
> -- Ian
>
>
>
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