Same issue with my 13' MBP 2020 i7 running Big Sur 11.5 and the CalDigit USB-C dock (Thunderbolt 3 mini Dock):
panic(cpu 4 caller 0xffffff80196e28c3): "waitq deadlock - waitq=0xffffff86c75a6c90, cpu=4\n"@/System/Volumes/Data/SWE/macOS/BuildRoots/d7e177bcf5/Library/Caches/com.apple.xbs/Sources/xnu/xnu-7195.141.2/osfmk/kern/waitq.c:2005
Backtrace (CPU 4), Frame : Return Address
0xffffffa12108bb00 : 0xffffff801968e04d
0xffffffa12108bb50 : 0xffffff80197d4e13
0xffffffa12108bb90 : 0xffffff80197c540a
0xffffffa12108bbe0 : 0xffffff8019632a2f
0xffffffa12108bc00 : 0xffffff801968d86d
0xffffffa12108bd20 : 0xffffff801968db63
0xffffffa12108bd90 : 0xffffff8019e9dc0a
0xffffffa12108be00 : 0xffffff80196e28c3
0xffffffa12108be20 : 0xffffff801966f29c
0xffffffa12108be60 : 0xffffff80196813ae
0xffffffa12108bef0 : 0xffffff80197a970d
0xffffffa12108bfa0 : 0xffffff8019633216
Process name corresponding to current thread: WindowServer
Boot args: chunklist-security-epoch=0 -chunklist-no-rev2-dev
Mac OS version:
20G71
Kernel version:
Darwin Kernel Version 20.6.0: Wed Jun 23 00:26:31 PDT 2021; root:xnu-7195.141.2~5/RELEASE_X86_64
Kernel UUID: FECBF22B-FBBE-36DE-9664-F12A7DD41D3D
KernelCache slide: 0x0000000019400000
KernelCache base: 0xffffff8019600000
Kernel slide: 0x0000000019410000
Kernel text base: 0xffffff8019610000
__HIB text base: 0xffffff8019500000
System model name: MacBookPro16,2 (Mac-5F9802EFE386AA28)
System shutdown begun: NO
Hibernation exit count: 3
Anyone would have any idea to solve this?