no malloc messages even if i remove the _DEBUG marco check in assert. maybe it can’t detected by do_check_inuse_chunk().
在 2022年3月23日，18:12，Heinrich Schuchardt xypron.glpk@gmx.de 写道： On 3/23/22 11:07, qianfan wrote:
在 2022/3/23 17:51, Heinrich Schuchardt 写道:
On 3/23/22 10:13, qianfan wrote:
在 2022/3/23 16:02, qianfan 写道:
在 2022/3/23 15:45, qianfan 写道:
在 2022/3/23 10:28, qianfan 写道: > 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 ... > resetting ... > It's there has any doc about how to debug data abort? Or is the bug > is already fixed? > Thanks This bug doesn't fixed on master code. I found v2021.01 is good and v2021.04-rc2 is bad. Also I had tested this on beaglebone black with am335x_evm_defconfig, has the simliar problem. find the first bug commit via 'git bisect': it told me that commit e97eb638de0dc8f6e989e20eaeb0342f103cb917 broke it. But it is very strange due to this commit doesn't touch any dhcp or network code. ➜ u-boot-main git:(e97eb638de) ✗ git bisect bug e97eb638de0dc8f6e989e20eaeb0342f103cb917 is the first bug commit commit e97eb638de0dc8f6e989e20eaeb0342f103cb917 Author: Heinrich Schuchardt xypron.glpk@gmx.de Date: Wed Jan 20 22:21:53 2021 +0100 fs: fat: consistent error handling for flush_dir() Provide function description for flush_dir(). Move all error messages for flush_dir() from the callers to the function. Move mapping of errors to -EIO to the function. Always check return value of flush_dir() (Coverity CID 316362). In fat_unlink() return -EIO if flush_dirty_fat_buffer() fails. Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de :040000 040000 2281a449f2d134078d7faa1ee735a367b55aad7e 77d188b1c99181fd71f2167fdeee3434a09db209 M fs 184aa6504143b452132e28cd3ebecc7b941cdfa1 is the first commit before e97eb638de0dc8f6e989e20eaeb0342f103cb917:
- e97eb638de0dc8f6e989e20eaeb0342f103cb917 fs: fat: consistent error
handling for flush_dir()
- 184aa6504143b452132e28cd3ebecc7b941cdfa1 Merge tag
'u-boot-rockchip-20210121' of https://gitlab.denx.de/u-boot/custodians/u-boot-rockchip |\ | * 9ddc0787bd660214366e386ce689dd78299ac9d0 pci: Add Rockchip dwc based PCIe controller driver I checked 184aa6504143b452132e28cd3ebecc7b941cdfa1 can work fine. U-Boot 2021.01-00688-g184aa65041-dirty (Mar 23 2022 - 15:07:56 +0800) CPU : AM335X-GP rev 2.1 Model: TI AM335x BeagleBone Black DRAM: 512 MiB WDT: Started with servicing (60s timeout) NAND: 0 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 Loading Environment from FAT... <ethaddr> not set. Validating first E-fuse MAC Net: eth2: ethernet@4a100000, eth3: usb_ether Hit any key to stop autoboot: 0 => dhcp ethernet@4a100000 Waiting for PHY auto negotiation to complete......... TIMEOUT ! 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 192.168.200.157 (757 ms) Using usb_ether device TFTP from server 192.168.200.1; our IP address is 192.168.200.157 Filename 'u-boot.img'. Load address: 0x82000000 Loading: ################################################################# ################################################################# ################################################################# ######################### 2.5 MiB/s done Bytes transferred = 1123888 (112630 hex) =>
"data abort" messages: data abort pc : [<9ff8196c>] lr : [<9ffa1cd7>] reloc pc : [<8081496c>] lr : [<80834cd7>] sp : 9df38e60 ip : 9df38fc8 fp : 00000001 r10: 9df38eac r9 : 9df4ceb0 r8 : 9ffa1b7d r7 : 9df52fd0 r6 : 9ffdbba8 r5 : 0000000d r4 : 00000018 r3 : 3ff589e0 r2 : 9ffafa11 r1 : 9ffdbbc0 r0 : 9ffdbb00 Flags: Nzcv IRQs off FIQs on Mode SVC_32 (T) Code: 0303 60ca 4403 6091 (685a) f042 Resetting CPU ... objdump u-boot:pc is in malloc and lr is in env_attr_walk unlink(victim, bck, fwd); 80814966: 60ca str r2, [r1, #12] set_inuse_bit_at_offset(victim, victim_size); 80814968: 4403 add r3, r0 unlink(victim, bck, fwd); 8081496a: 6091 str r1, [r2, #8] set_inuse_bit_at_offset(victim, victim_size); 8081496c: 685a ldr r2, [r3, #4] 8081496e: f042 0201 orr.w r2, r2, #1 80814972: 605a str r2, [r3, #4] r3 is 3ff589e0 and it's not a valid ram address on am335x.
I have seen crashes in common/dlmalloc.c before after double free() or free() with an incorrect pointer. The assert() statements in do_check_inuse_chunk() are meant to catch this but assert() as defined in include/log.h does not stop the code and even does not print without _DEBUG=1. You should be able to get the assert output with #include <common.h> #define _DEBUG 1 #include <log.h> at the top of common/dlmalloc.c. You should get full malloc debug output with
Hi: I had try add DEBUG marco before <log.h> and no other malloc message
assert() checks for _DEBUG. Defining DEBUG after common.h will not define _DEBUG.
Best regards
Heinrich
printed.
#define DEBUG 1 #include <common.h> #include <log.h> Best regards Heinrich