在 2022/3/23 15:51, Abder 写道:
Le mer. 23 mars 2022 à 03:28, qianfan <qianfangui...@163.com> a écrit :
Hi:
I had a custom AM335X board connected my computer by usbnet. It always report
data abort when 'dhcp':
Next it the log:
U-Boot 2022.01-rc1-00183-gfa5b4e2d19-dirty (Feb 25 2022 - 15:45:02 +0800)
CPU : AM335X-GP rev 2.1
Model: WISDOM AM335X CCT
DRAM: 512 MiB
NAND: 256 MiB
MMC: OMAP SD/MMC: 0
Loading Environment from NAND... *** Warning - bad CRC, using default
environment
Net: Could not get PHY for ethernet@4a100000: addr 0
eth2: ethernet@4a100000, eth3: usb_ether
Hit any key to stop autoboot: 0
=> setenv autoload no
=> dhcp
using musb-hdrc, OUT ep1out IN ep1in STATUS ep2in
MAC de:ad:be:ef:00:01
HOST MAC de:ad:be:ef:00:00
RNDIS ready
musb-hdrc: peripheral reset irq lost!
high speed config #2: 2 mA, Ethernet Gadget, using RNDIS
USB RNDIS network up!
BOOTP broadcast 1
BOOTP broadcast 2
BOOTP broadcast 3
DHCP client bound to address 192.168.200.4 (757 ms)
data abort
pc : [<9fe9b0a2>] lr : [<9febbc3f>]
reloc pc : [<808130a2>] lr : [<80833c3f>]
sp : 9de53410 ip : 9de53578 fp : 00000001
r10: 9de5345c r9 : 9de67e80 r8 : 9febbae5
r7 : 9de72c30 r6 : 9feec710 r5 : 0000000d r4 : 00000018
r3 : 3fdd8e04 r2 : 00000002 r1 : 9feec728 r0 : 9feec700
Flags: Nzcv IRQs off FIQs on Mode SVC_32 (T)
Code: f023 0303 60ca 4403 (6091) 685a
Resetting CPU ...
Don't have any idea on what is causing the crash, but to answer your
question about debugging data abort :
from the reg dump, you can look at the PC and LR registers to see the
function that caused the crash (in PC) and its caller (in LR) by using
the .map file (generated after compilation).
use the values of pc and lr ante relocation (the 2nd ligne in the dump
above: reloc pc ...)
Hi:
Thanks for your's guide. I had this data abort message:
data abort
pc : [<9ff8196c>] lr : [<9ffa1cd7>]
reloc pc : [<8081496c>] lr : [<80834cd7>]
and found the pc and lc address in u-boot.map:
.text.env_attr_walk
0x0000000080834c54 0xb4 env/built-in.o
0x0000000080834c54 env_attr_walk
.text.malloc 0x0000000080814900 0x420 common/built-in.o
0x0000000080814900 malloc
Is means that data abort when 'malloc' called from env_attr_walk? It's there has
a better way that can dump stack?
Regards
--
Abder
resetting ...
It's there has any doc about how to debug data abort? Or is the bug is already
fixed?
Thanks
