Date: Wed, 13 May 2015 20:03:08 -0400 (EDT) From: Keith White <kwhite@site.uottawa.ca> To: freebsd-arm@freebsd.org Subject: Translation Fault panic when trying to use an mfs_root on BBB Message-ID: <alpine.BSF.2.20.1505131848310.98564@localhost.my.domain>
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I get the following panic when trying to load an mfs_root on a
reasonably current BBB image:
Fatal kernel mode data abort: 'Translation Fault (L1)' on read
trapframe: 0xdd43fd50
FSR=00000005, FAR=01211ef0, spsr=20000113
r0 =c35f4200, r1 =01211f00, r2 =000001e0, r3 =3dc1dd00
r4 =c3638930, r5 =c362d838, r6 =c362d810, r7 =c06037b8
r8 =0000002d, r9 =00000000, r10=c3638930, r11=dd43fdf0
r12=00000000, ssp=dd43fde0, slr=c0249918, pc =c05c6a68
[ thread pid 4 tid 100054 ]
Stopped at memmove+0x29c: ldmdb r1!, {r3-r4, r12, r14}
db>
Hints, suggestions?
...keith
---------------------------------
More (trimmed) details from boot:
...
U-Boot 2014.10 (Mar 19 2015 - 18:29:51)
...
FreeBSD/armv6hf U-Boot loader, Revision 1.2
(kwhite@freebsd11, Tue Mar 17 22:23:25 EDT 2015)
...
Found U-Boot device: disk
Checking unit=1 slice=<auto> partition=<auto>... good.
/boot/kernel/kernel data=0x505c2c+0x923d4 syms=[0x4+0x606a0+0x4+0x65ed4]
/boot/kernel/snd_uaudio.ko text=0xed3c data=0x620+0x10 syms=[0x4+0x1ec0+0x4+0x1a2f]
...
Type '?' for a list of commands, 'help' for more detailed help.
loader> load -t mfs_root /rootfs
/rootfs size=0x858000
loader> boot -asv
Booting...
/boot/dtb/beaglebone-black.dtb size=0x24b4
Loaded DTB from file 'beaglebone-black.dtb'.
Kernel entry at 0x80200100...
Kernel args: -asv
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2015 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 11.0-CURRENT #1 r282672M: Tue May 12 06:57:24 EDT 2015
kwhite@freebsd11:/usr/obj/arm.armv6hf/tank/RPI/head/sys/BEAGLEBONE-LOCAL arm
FreeBSD clang version 3.6.0 (tags/RELEASE_360/final 230434) 20150225
WARNING: WITNESS option enabled, expect reduced performance.
Preloaded elf kernel "/boot/kernel/kernel" at 0xc1219000.
...
mmc0: Probing bus
usbus0: 480Mbps High Speed USB v2.0
usbus1: 480Mbps High Speed USB v2.0
md0: Preloaded image </rootfs> 8749056 bytes at 0x9b9f00
ugen1.1: <Mentor Graphics> at usbus1
uhub0: <Mentor Graphics OTG Root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus1
ugen0.1: <Mentor Graphics> at usbus0
uhub1: <Mentor Graphics OTG Root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus0
Fatal kernel mode data abort: 'Translation Fault (L1)' on read
trapframe: 0xdd43fd50
FSR=00000005, FAR=01211ef0, spsr=20000113
r0 =c35f4200, r1 =01211f00, r2 =000001e0, r3 =3dc1dd00
r4 =c3638930, r5 =c362d838, r6 =c362d810, r7 =c06037b8
r8 =0000002d, r9 =00000000, r10=c3638930, r11=dd43fdf0
r12=00000000, ssp=dd43fde0, slr=c0249918, pc =c05c6a68
[ thread pid 4 tid 100054 ]
Stopped at memmove+0x29c: ldmdb r1!, {r3-r4, r12, r14}
...
db> where
Tracing pid 4 tid 100054 td 0xc362b990
db_trace_self() at db_trace_self
pc = 0xc05b31b8 lr = 0xc0238364 (db_stack_trace+0x108)
sp = 0xdd43fa58 fp = 0xdd43fa70
r10 = 0xc0788d34
db_stack_trace() at db_stack_trace+0x108
pc = 0xc0238364 lr = 0xc0237db0 (db_command+0x380)
sp = 0xdd43fa78 fp = 0xdd43fb18
r4 = 0x00000000 r5 = 0x00000000
r6 = 0x00000072 r10 = 0xc0788d34
db_command() at db_command+0x380
pc = 0xc0237db0 lr = 0xc0237a20 (db_command_loop+0x74)
sp = 0xdd43fb20 fp = 0xdd43fb30
r4 = 0xc0601fde r5 = 0xc061e763
r6 = 0xc0788d20 r7 = 0xc06cad34
r8 = 0xc07261d0 r9 = 0xc07261d4
r10 = 0x00000013
db_command_loop() at db_command_loop+0x74
pc = 0xc0237a20 lr = 0xc023a520 (db_trap+0x108)
sp = 0xdd43fb38 fp = 0xdd43fc50
r4 = 0x00000000 r5 = 0xc0788d2c
r6 = 0xc07261f8 r10 = 0x00000013
db_trap() at db_trap+0x108
pc = 0xc023a520 lr = 0xc03b80f8 (kdb_trap+0xd4)
sp = 0xdd43fc58 fp = 0xdd43fc78
r4 = 0x00000000 r5 = 0x00000005
r6 = 0xc07261f8 r7 = 0xc06cad34
kdb_trap() at kdb_trap+0xd4
pc = 0xc03b80f8 lr = 0xc05c9748 (abort_fatal+0x1d4)
sp = 0xdd43fc80 fp = 0xdd43fca0
r4 = 0xdd43fd50 r5 = 0x00000013
r6 = 0x01211ef0 r7 = 0x00000005
r8 = 0x00000005 r9 = 0x01211ef0
r10 = 0x00000013
abort_fatal() at abort_fatal+0x1d4
pc = 0xc05c9748 lr = 0xc05c9574 (abort_fatal)
sp = 0xdd43fca8 fp = 0xdd43fd48
r4 = 0xdd43fd50 r5 = 0x00000000
r6 = 0x00000005 r7 = 0x00000005
r8 = 0xc362b990 r10 = 0x00000013
abort_fatal() at abort_fatal
pc = 0xc05c9574 lr = 0xc05b4840 (exception_exit)
sp = 0xdd43fd50 fp = 0xdd43fdf0
r4 = 0xc362d838 r5 = 0xc362d810
r6 = 0xc06037b8 r7 = 0x0000002d
r8 = 0x00000000 r10 = 0xc3638930
exception_exit() at exception_exit
pc = 0xc05b4840 lr = 0xc0249918 (mdstart_preload+0x58)
sp = 0xdd43fde0 fp = 0xdd43fdf0
r0 = 0xc35f4200 r1 = 0x01211f00
r2 = 0x000001e0 r3 = 0x3dc1dd00
r4 = 0xc3638930 r5 = 0xc362d838
r6 = 0xc362d810 r7 = 0xc06037b8
r8 = 0x0000002d r9 = 0x00000000
r10 = 0xc3638930 r12 = 0x00000000
memmove() at memmove+0x29c
pc = 0xc05c6a68 lr = 0xc0249918 (mdstart_preload+0x58)
sp = 0xdd43fde0 fp = 0xdd43fdf0
mdstart_preload() at mdstart_preload+0x58
pc = 0xc0249918 lr = 0xc0249834 (md_kthread+0x194)
sp = 0xdd43fdf8 fp = 0xdd43fe30
r4 = 0xc362d800 r10 = 0xc3638930
md_kthread() at md_kthread+0x194
pc = 0xc0249834 lr = 0xc034b0d0 (fork_exit+0x84)
sp = 0xdd43fe38 fp = 0xdd43fe50
r4 = 0xc362b990 r5 = 0xc3379000
r6 = 0xc02496a0 r7 = 0xc362d800
r8 = 0xdd43fe58 r9 = 0xc0725d70
r10 = 0x00000104
fork_exit() at fork_exit+0x84
pc = 0xc034b0d0 lr = 0xc05b47d0 (swi_exit)
sp = 0xdd43fe58 fp = 0x00000000
r4 = 0xc02496a0 r5 = 0xc362d800
r6 = 0xc072762c r7 = 0x00000000
r8 = 0xc0725d74 r10 = 0x00000104
swi_exit() at swi_exit
pc = 0xc05b47d0 lr = 0xc05b47d0 (swi_exit)
sp = 0xdd43fe58 fp = 0x00000000
db> reboot
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