Date: Tue, 08 Oct 2013 21:07:56 -0400 From: George Mitchell <george+freebsd@m5p.com> To: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Raspberry Pi prefetch aborts Message-ID: <5254AC6C.9070400@m5p.com>
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Am I the only one seeing these?
Fatal kernel mode prefetch abort at 0x4278f502
trapframe: 0xdd2eafa0, spsr=200000f3
r0 =00000001, r1 =00000001, r2 =00000001, r3 =c058dbd0
r4 =c2400000, r5 =00000004, r6 =c05826a0, r7 =c2400308
r8 =c058d8c8, r9 =c25fd300, r10=c29aa9e4, r11=0004240c
r12=00000000, ssp=dd2eaff0, slr=c046079c, pc =4278f502
[ thread pid 27951 tid 100090 ]
Stopped at 0x4278f502: address 0x4278f502 is invalid
*** error reading from address 4278f502 ***
db> t
Tracing pid 27951 tid 100090 td 0xc2799c80
db_trace_self() at db_trace_self
pc = 0xc045d3b0 lr = 0xc012c5e8 (db_stack_trace+0xf4)
sp = 0xdd2eacc8 fp = 0xdd2eace0
r10 = 0xc0542420
db_stack_trace() at db_stack_trace+0xf4
pc = 0xc012c5e8 lr = 0xc012bf54 (db_command+0x264)
sp = 0xdd2eace8 fp = 0xdd2ead88
r4 = 0x00000000 r5 = 0x00000000
r6 = 0xc04b9e26
db_command() at db_command+0x264
pc = 0xc012bf54 lr = 0xc012bcc4 (db_command_loop+0x60)
sp = 0xdd2ead90 fp = 0xdd2eada0
r4 = 0xc0493b6b r5 = 0xc04ab7ec
r6 = 0xc058bf7c r7 = 0xdd2eafa0
r8 = 0xdd2eafa0 r9 = 0xc0582b24
r10 = 0xc0542690
db_command_loop() at db_command_loop+0x60
pc = 0xc012bcc4 lr = 0xc012e6c4 (db_trap+0xdc)
sp = 0xdd2eada8 fp = 0xdd2eaec8
r4 = 0x00000000 r5 = 0xdd2eadb0
r6 = 0xc0582b50
db_trap() at db_trap+0xdc
pc = 0xc012e6c4 lr = 0xc0267be0 (kdb_trap+0xd4)
sp = 0xdd2eaed0 fp = 0xdd2eaef0
r4 = 0x00000000 r5 = 0x00000000
r6 = 0xc0582b50 r7 = 0xdd2eafa0
kdb_trap() at kdb_trap+0xd4
pc = 0xc0267be0 lr = 0xc046e824 (dab_fatal+0x174)
sp = 0xdd2eaef8 fp = 0xdd2eaf10
r4 = 0xdd2eafa0 r5 = 0x200001d3
r6 = 0x4278f502 r7 = 0x00000000
r8 = 0xdd2eafa0 r9 = 0xc25fd300
r10 = 0xc2981960
dab_fatal() at dab_fatal+0x174
pc = 0xc046e824 lr = 0xc046eb10 ($d)
sp = 0xdd2eaf18 fp = 0xdd2eaf98
r4 = 0xc2400000 r5 = 0xc2799c80
r6 = 0xc05826a0 r7 = 0xc2400308
$d() at $d
pc = 0xc046eb10 lr = 0xc045eb60 (exception_exit)
sp = 0xdd2eafa0 fp = 0x0004240c
r4 = 0xc2400000 r5 = 0x00000004
r6 = 0xc05826a0 r7 = 0xc2400308
r8 = 0xc058d8c8 r9 = 0xc25fd300
r10 = 0xc29aa9e4
exception_exit() at exception_exit
pc = 0xc045eb60 lr = 0xc046079c (spinlock_exit+0x18)
sp = 0xdd2eaff8 fp = 0x0004240c
r0 = 0x00000001 r1 = 0x00000001
r2 = 0x00000001 r3 = 0xc058dbd0
r4 = 0xc2400000 r5 = 0x00000004
r6 = 0xc05826a0 r7 = 0xc2400308
r8 = 0xc058d8c8 r9 = 0xc25fd300
r10 = 0xc29aa9e4 r12 = 0x00000000
Unable to unwind into user mode
db>
The numbers vary, but the list of addresses is always the same. I do a
portmaster run, and sometimes it goes all the way through, and sometimes
I get crashes every five minutes. The crashes seem somewhat more likely
to happen during portmaster's dependency checking than at other times,
and they almost never happen while configuring, compiling, linking,
or installing is in progress.
SVN revision r256073M (RPI-B config file modified for serial console).
Suggestions, please? -- George
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