HI , Same issue here when I am connecting to my MCP 16 BigSur 11.4 my Docking station my laptop panic and reboot him self it didn't happened the las version before only now . any update on it. ? panic(cpu 8 caller 0xffffff8003c9f846): [kext.kalloc.2048]: element modified after free (off:1672, val:0xffffffff00000000, sz:2048, ptr:0xffffff9362ecd000, prot:zero) 1672: 0xffffffff00000000 Backtrace (CPU 8), Frame : Return Address 0xffffffb0cacbab60 : 0xffffff800348e0dd 0xffffffb0cacbabb0 : 0xffffff80035d4f33 0xffffffb0cacbabf0 : 0xffffff80035c552a 0xffffffb0cacbac40 : 0xffffff8003432a2f 0xffffffb0cacbac60 : 0xffffff800348d8fd 0xffffffb0cacbad80 : 0xffffff800348dbf3 0xffffffb0cacbadf0 : 0xffffff8003c9d81a 0xffffffb0cacbae60 : 0xffffff8003c9f846 0xffffffb0cacbb2e0 : 0xffffff80034ecad6 0xffffffb0cacbb350 : 0xffffff800349d6bc 0xffffffb0cacbb3a0 : 0xffffff8003bae4f2 0xffffffb0cacbb3c0 : 0xffffff800655a41c 0xffffffb0cacbb3e0 : 0xffffff80065683fc 0xffffffb0cacbb440 : 0xffffff800655ab6e 0xffffffb0cacbb4e0 : 0xffffff800655df0e 0xffffffb0cacbb790 : 0xffffff800655b073 0xffffffb0cacbb8f0 : 0xffffff8006550377 0xffffffb0cacbb950 : 0xffffff8006554e88 0xffffffb0cacbbb10 : 0xffffff8003c8536e 0xffffffb0cacbbb60 : 0xffffff80037488af 0xffffffb0cacbbc70 : 0xffffff800373d95d 0xffffffb0cacbbf40 : 0xffffff8003b3fc9e 0xffffffb0cacbbfa0 : 0xffffff80034331f6 Kernel Extensions in backtrace: com.apple.security.sandbox(300.0)[C7CC6439-6854-33FB-9E97-F468B75AD280]@0xffffff8006549000->0xffffff800658efff dependency: com.apple.driver.AppleMobileFileIntegrity(1.0.5)[366C7BD4-9502-3D1C-ABBE-DE9749913D0C]@0xffffff8004ac0000->0xffffff8004ad5fff dependency: com.apple.iokit.IOStorageFamily(2.1)[A0D72FE9-649B-316A-8B5C-934E295FF0B5]@0xffffff800606d000->0xffffff800607efff dependency: com.apple.kext.AppleMatch(1.0.0d1)[759DEBDE-C844-3703-A01C-4DF5EEA8F4ED]@0xffffff8004abc000->0xffffff8004abefff Process name corresponding to current thread: NotificationCenter Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev Mac OS version: 20F71 Kernel version: Darwin Kernel Version 20.5.0: Sat May 8 05:10:33 PDT 2021; root:xnu-7195.121.3~9/RELEASE_X86_64 Kernel UUID: 52A1E876-863E-38E3-AC80-09BBAB13B752 KernelCache slide: 0x0000000003200000 KernelCache base: 0xffffff8003400000 Kernel slide: 0x0000000003210000 Kernel text base: 0xffffff8003410000 __HIB text base: 0xffffff8003300000 System model name: MacBookPro16,1 (Mac-E1008331FDC96864) System shutdown begun: NO Hibernation exit count: 0