Under what circumstances will it enter: MemManageException

lingd

Under what circumstances will it enter: MemManageException [Copy link]

                                 I often get MemManageException when debugging the file system recently. I have no idea what to do now. Please give me some advice.

chenyi9258

                                 Put a breakpoint in MemManageException. After debugging stops at this breakpoint, look through the stack to see which function was executed last. This backtracking should provide clues.

sukit_bbs

                                 I know that the execution will jump to this function at any point, but what causes it and how to solve it?

kerode

                                 I have been working on this problem for a whole day but still can't solve it. Does the moderator have any better suggestions?

lxg69

                                 Still no clue after searching further?

ljl918918

I know that the execution will jump to this function at any point, but what causes it and how to solve it?

It's hard to say what causes it. Generally, it is caused by out-of-bounds memory access. You can only find out the specific cause by finding the source according to the method I mentioned in the second floor.

wangxinxin999

                                 There is a register Memory Manage Fault Status Register in the NVIC part. You can find the specific cause by checking that register. If you can't analyze it, send us the code of the problematic part.

aug_com

                                 There is a dedicated error status register, which has never been used before

hzj000

                                 Is there such a register? I think it is difficult to point out the direct cause of the error in one step. It is still necessary to debug step by step.

pala3cecili

The abnormal interruption is set to power off and modified to return directly.
It will return to the statement where the error occurred.

ogmwyv

The source code is based on stm32zet6 + K9F1G08 + FATFS. This project was able to run normally before, but I changed it a little bit and it kept entering an exception. When I changed it back, it still entered the same exception. I hope some friends can take some time to help me take a look. Thank you very much. I have not been able to solve it.

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2010-4-24 10:44

1204

I know where to jump to this function, but what causes it and how to solve it?
Since
I know where to jump to, it should be easy to find the problem by looking at the disassembly.
Analyze the stack structure after entering the fault, and find the instruction that caused the fault according to r15.
This is what I have always done.

amountain

                                 The method is worth learning from. Let's analyze the stack structure after entering the fault. How to analyze it specifically?