User profile for user: Graze
Graze Author
User level: Level 1
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Constant Panic

My 2019 Intel MacBook Pro has for some time now been experiencing kernel panics. I have several times wiped the drive clean, reinstalled the system and recovered all my data, which for a while seems to improve things, but then the panics return, with increasing frequency: now back to 2-3 per day. I am suspecting RAM failure, which I believe on this model would involve replacement of the motherboard. Apple Diagnostics reveals no issues. Can anyone see anything in this selection of reports to offer any clues as to the root of the problem?

Many thanks,

Graeme


Panic Reports


MacBook Pro (2017 – 2020)

Posted on Jul 29, 2024 5:51 AM

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User profile for user: Grant Bennet-Alder
Grant Bennet-Alder
User level: Level 10
144,793 points

Posted on Jul 29, 2024 7:14 AM

panic(cpu 2 caller 0xffffff800e5e0ebf): [kalloc.type.var5.512]: element modified after free (off:304, val:0x0000000100000000, sz:512, ptr:0xffffff99c7262800)


that specific type of panic says dynamically-allocated RAM memory was freed, but when the system routines went to check it later, it had been modified.


that sort of problem correlates strongly with RAM memory errors. You should run the use diagnostic as often as you can, and if it EVER finds a problem, save the report as evidence -- your mainboard needs to be replaced.


in the mean time, ¿what his the date of your most recent backup, and by what method? if your mainboard is replaced, your files will be discarded with it -- you MUST have a backup copy.

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User profile for user: Grant Bennet-Alder
Grant Bennet-Alder
User level: Level 10
144,793 points

Jul 29, 2024 7:14 AM in response to Graze

panic(cpu 2 caller 0xffffff800e5e0ebf): [kalloc.type.var5.512]: element modified after free (off:304, val:0x0000000100000000, sz:512, ptr:0xffffff99c7262800)


that specific type of panic says dynamically-allocated RAM memory was freed, but when the system routines went to check it later, it had been modified.


that sort of problem correlates strongly with RAM memory errors. You should run the use diagnostic as often as you can, and if it EVER finds a problem, save the report as evidence -- your mainboard needs to be replaced.


in the mean time, ¿what his the date of your most recent backup, and by what method? if your mainboard is replaced, your files will be discarded with it -- you MUST have a backup copy.

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Constant Panic

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