Problem persist! I have many panics every day!
panic(cpu 7 caller 0xffffff8017898976): [kext.kalloc.2048]: element modified after free (off:1672, val:0xffffffff00000000, sz:2048, ptr:0xffffff93d7fa5800, prot:zero)
1672: 0xffffffff00000000
Backtrace (CPU 7), Frame : Return Address
0xffffffa1daab2640 : 0xffffff80170870ad
0xffffffa1daab2690 : 0xffffff80171cddd3
0xffffffa1daab26d0 : 0xffffff80171be3ca
0xffffffa1daab2720 : 0xffffff801702ba2f
0xffffffa1daab2740 : 0xffffff80170868cd
0xffffffa1daab2860 : 0xffffff8017086bc3
0xffffffa1daab28d0 : 0xffffff801789694a
0xffffffa1daab2940 : 0xffffff8017898976
0xffffffa1daab2dc0 : 0xffffff80170e5a26
0xffffffa1daab2e30 : 0xffffff801709668c
0xffffffa1daab2e80 : 0xffffff80177a8822
0xffffffa1daab2ea0 : 0xffffff801a1596dc
0xffffffa1daab2ec0 : 0xffffff801a1676bc
0xffffffa1daab2f20 : 0xffffff801a159e2e
0xffffffa1daab2fc0 : 0xffffff801a15bfa7
0xffffffa1daab3270 : 0xffffff801a15fe3d
0xffffffa1daab3540 : 0xffffff801a15cda2
0xffffffa1daab37f0 : 0xffffff801a15a333
0xffffffa1daab3950 : 0xffffff801a1547b1
0xffffffa1daab3b50 : 0xffffff801787fb4a
0xffffffa1daab3b90 : 0xffffff801731a98f
0xffffffa1daab3bd0 : 0xffffff80173407c8
0xffffffa1daab3c90 : 0xffffff80173264a8
0xffffffa1daab3ee0 : 0xffffff8017327059
0xffffffa1daab3f40 : 0xffffff8017739fce
0xffffffa1daab3fa0 : 0xffffff801702c1f6
Kernel Extensions in backtrace:
com.apple.security.sandbox(300.0)[F9746111-2761-31A8-A9C8-3DCA8976E468]@0xffffff801a148000->0xffffff801a18dfff
dependency: com.apple.driver.AppleMobileFileIntegrity(1.0.5)[7C10DA84-DFD9-3C2D-B503-E648E488EC9D]@0xffffff80186c0000->0xffffff80186d5fff
dependency: com.apple.iokit.IOStorageFamily(2.1)[A78CAAA2-43A6-38EF-AEDA-3B957D358855]@0xffffff8019c6d000->0xffffff8019c7efff
dependency: com.apple.kext.AppleMatch(1.0.0d1)[DB7AEFA5-928C-3B7F-87CC-EDC47D98B267]@0xffffff80186bc000->0xffffff80186befff
Process name corresponding to current thread: update_dyld_sim_shared_cache
Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev
Mac OS version:
20F5046g
Kernel version:
Darwin Kernel Version 20.5.0: Thu Apr 15 05:31:19 PDT 2021; root:xnu-7195.120.38.111.1~4/RELEASE_X86_64
My reports in feedback assistant: FB9085399, FB9084201, FB9080122, FB9078447, FB9077541, FB9073646, FB9069424, FB9036423, FB9006281, FB8996761, FB8985931, FB8984349, FB8982979 ...
I have a 16" 2019 MBP running Big Sur 11.4 and I'm use an HP Thunderbolt Dock G2 with my monitors connected via USB-C.
I get this all the time. Sometimes it can be all of a sudden in the middle of a session, but it is much more prevalent when I am plugging in/out of the dock. It also occurs when the laptop wakes up after being in sleep mode. I get the quick sound of the fans blowing and then it reboots. It happens way too many times. I have no other option in terms of trying other docks.
I report the error every time I get it. It has been going on since the Big Sur upgrade.
Are you connecting your monitor via DisplayPort? Try using HDMI instead - my laptop only crashes with DisplayPort, never with HDMI. Also, try connecting your monitor without the dock (get a USB-C to HDMI cable) to rule out a problem with dock
Happens to me as well as described by @dbdotconf. I use 2 monitors with 16'' 2021 Big Sur 11.5.1. The same flow of actions, almost every day when I plug in monitors via 2 TB3, I hear fans and then it crashes and reboots. Also send report every time. This is very annoying. Such amount of money was paid not for such an experience with Mac which is supposed to be ideal.