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User profile for user: davidpauls
davidpauls Author
User level: Level 1
5 points

my mac keeps crashing

If I leave my iMac 27 inch mid 2011

processor 3.4 ghz intel core 17

memory 32 GB 1333mhz DDR3 running for a few hours it crashes and restarts by it self.

It never done this before, and I run diagnostics but it keeps failing If i leave it on to long unattended.


Below you can find what the mac tells me self and what Etrecheck thinks is wrong

Anyone have an idea?






Problem description:


*** Panic Report *** panic(cpu 2 caller 0xffffff8006ebb1f0): "a freed zone element has been modified in zone kalloc.128: expected 0xdeadbeefdeadbeef but found 0xffffff80553cded0, bits changed 0x2152416f8b91603f, at offset 88 of 128 in element 0xffffff8042be8e80, cookies 0x3f00115ebf9a4750 0x535211794e83cb1"@/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-4570.71.57/osfmk/kern/zalloc.c:1122 Backtrace (CPU 2), Frame : Return Address g




Diagnostics Information: ℹ️


    May 12, 2020, 07:43:32 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194332_[redacted].crash


    May 12, 2020, 07:43:22 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194322_[redacted].crash


    May 12, 2020, 07:43:12 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194312_[redacted].crash


    May 12, 2020, 07:43:02 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194302_[redacted].crash


    May 12, 2020, 07:42:42 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194242_[redacted].crash


    May 12, 2020, 07:42:32 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194232_[redacted].crash


    May 12, 2020, 07:42:22 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194222_[redacted].crash


    May 12, 2020, 07:42:12 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194212_[redacted].crash


    May 12, 2020, 07:42:02 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194202_[redacted].crash


    May 12, 2020, 07:41:52 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194152_[redacted].crash


    May 12, 2020, 07:41:42 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194142_[redacted].crash


    May 12, 2020, 07:41:32 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194132_[redacted].crash


    May 12, 2020, 07:41:22 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194122_[redacted].crash


    May 12, 2020, 07:41:12 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194112_[redacted].crash


    May 12, 2020, 07:41:02 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194102_[redacted].crash


    May 12, 2020, 07:40:52 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194052_[redacted].crash


    May 12, 2020, 07:40:42 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194042_[redacted].crash


    May 12, 2020, 07:40:32 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194032_[redacted].crash


    May 12, 2020, 07:40:22 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194022_[redacted].crash


    May 12, 2020, 06:33:58 PM    /Library/Logs/DiagnosticReports/Kernel_2020-05-12-183358_[redacted].panic [Click for details]


    May 12, 2020, 06:32:51 PM    Self test - passed


    May 12, 2020, 10:01:44 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/compressor32bitd_2020-05-12-100144_[redacted].crash


    May 1, 2020, 11:56:07 PM    /Library/Logs/DiagnosticReports/Kernel_2020-05-01-235607_[redacted].panic [Click for details]


    Apr 28, 2020, 08:44:17 PM    /Library/Logs/DiagnosticReports/Kernel_2020-04-28-204417_[redacted].panic [Click for details]


    Apr 17, 2020, 03:34:55 AM    /Library/Logs/DiagnosticReports/Kernel_2020-04-17-033455_[redacted].panic [Click for details]


    Apr 14, 2020, 07:26:22 PM    /Library/Logs/DiagnosticReports/Kernel_2020-04-14-192622_[redacted].panic [Click for details]


    May 12, 2020, 07:42:52 PM    /Library/Logs/DiagnosticReports/qmasterd_2020-05-12-194252_[redacted].crash


    May 12, 2020, 12:52:21 PM    /Library/Logs/DiagnosticReports/Adobe Lightroom Classic_2020-05-12-125221_[redacted].cpu_resource.diag [Click for details]


    May 11, 2020, 11:34:52 AM    /Library/Logs/DiagnosticReports/Adobe Lightroom Classic_2020-05-11-113452_[redacted].cpu_resource.diag [Click for details]


    May 11, 2020, 11:27:29 AM    /Library/Logs/DiagnosticReports/com.torrents-time.helper_2020-05-11-112729_[redacted].crash


    Apr 16, 2020, 06:51:35 PM    /Library/Logs/DiagnosticReports/Kernel_2020-04-16-185135_[redacted].panic [Click for details]



iMac, OS X 10.11

Posted on May 12, 2020 10:52 AM

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Question marked as Top-ranking reply
User profile for user: BobHarris
BobHarris
User level: Level 9
55,109 points

Posted on May 12, 2020 11:17 AM 

a freed zone element has been modified in zone kalloc.128: 
expected 0xdeadbeefdeadbeef 
but found 0xffffff80553cded0, 
bits changed 0x2152416f8b91603f, 
at offset 88 of 128 in element 0xffffff8042be8e80

This is a classic 3rd party kernel extension generated panic, where the 3rd party kernel extension is not using proper memory free list hygiene.


The worse offenders are 3rd party anti-virus packages. They are not alone in generating this kind of panic, but they are the most frequent ones we find in the forums.


See if you have a panic report (file's ending in .panic).  If you have more than 1, please post a couple as the differences can be very useful:

Look for the Kernel Panic reports at:

Finder -> Go -> Go to Folder -> /Library/Logs/DiagnosticReports 

<http://support.apple.com/kb/ht2546>

<http://support.apple.com/en-us/HT200553>

The panic report should have ".panic" in the file name.

You can put the panic report in an "Additional Text" box when you Reply

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11 replies
Question marked as Top-ranking reply
User profile for user: BobHarris
BobHarris
User level: Level 9
55,109 points

May 12, 2020 11:17 AM in response to davidpauls 

a freed zone element has been modified in zone kalloc.128: 
expected 0xdeadbeefdeadbeef 
but found 0xffffff80553cded0, 
bits changed 0x2152416f8b91603f, 
at offset 88 of 128 in element 0xffffff8042be8e80

This is a classic 3rd party kernel extension generated panic, where the 3rd party kernel extension is not using proper memory free list hygiene.


The worse offenders are 3rd party anti-virus packages. They are not alone in generating this kind of panic, but they are the most frequent ones we find in the forums.


See if you have a panic report (file's ending in .panic).  If you have more than 1, please post a couple as the differences can be very useful:

Look for the Kernel Panic reports at:

Finder -> Go -> Go to Folder -> /Library/Logs/DiagnosticReports 

<http://support.apple.com/kb/ht2546>

<http://support.apple.com/en-us/HT200553>

The panic report should have ".panic" in the file name.

You can put the panic report in an "Additional Text" box when you Reply

Reply
User profile for user: BobHarris
BobHarris
User level: Level 9
55,109 points

May 13, 2020 1:16 PM in response to davidpauls

Norton is what I was going to guess, as it is the most common Anti-Virus product that generates this kind style of kernel panic. But I did not want to be overconfident.


As far as A/V products go, Norton is the one I see generating the most panics. It is not alone, but no other seems to be as panic prolific.


FYI: I was hoping you would open the respective .panic files, then copy and paste their output, not just list the file names 😀 As you have confirmed Norton is present, I feel comfortable saying Norton is the root of your panic problem.

Reply
User profile for user: BobHarris
BobHarris
User level: Level 9
55,109 points

May 13, 2020 3:55 PM in response to davidpauls

Norton is still my guess.


But you have 3 other kernel extension families on your Mac


com.LaCie.ScsiType00	2.2.0

Not sure what you need with a LaCie driver, unless you have some kind of SCSI adapter on your Mac or you are trying to use iSCSI network attached storage.


com.paceap.kext.pacesupport.snowleopard	5.9.1

Generally associated with DRM'ed software, and this is the code that unlocks it for your use.


com.paragon-software.filesystems.ntfs	23.0.15

Do you really mount Window's file systems on your Mac? If you do, then make sure it is an up-to-date driver.


com.symantec.nfm.kext	9.0.1
com.symantec.ips.kext	9.0.2
com.symantec.internetSecurity.kext	9.0.3
com.symantec.SymXIPS	9.0.1

Still my most likely candidate

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my mac keeps crashing

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