login: witness: lock_object uninitialized: 0xffff800000e01028 Starting stack trace... witness_checkorder(ffff800000e01028,9,0) at witness_checkorder+0x137 witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000e01028,9,0) at witness_checkorder+0x137 sys/kern/subr_witness.c:777 rw_enter_write(ffff800000e01018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e01000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000e01000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002128a5c8) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff8000212b7b80,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff8000212b7b80,ffff80002e4a3770,ffff80002e4a37c0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e4a3840) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4a3840) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e86b60d7850, count: 249 End of stack trace. Stopped at db_enter+0x1c: addq $0x8,%rsp ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800000e01028,9,0) at witness_checkorder+0x13c witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000e01028,9,0) at witness_checkorder+0x13c sys/kern/subr_witness.c:777 rw_enter_write(ffff800000e01018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e01000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000e01000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002128a5c8) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff8000212b7b80,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff8000212b7b80,ffff80002e4a3770,ffff80002e4a37c0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e4a3840) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4a3840) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e86b60d7850, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002e4a3510 rbx 0x3 rdx 0 rcx 0xffff8000212b7b80 rax 0xffffffff82c01ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80002e4a34b0 r9 0x8080808080808080 r10 0xbc1e34bbfaf970f1 r11 0x4c42d8e944aba864 r12 0xffff800000e01001 r13 0xffff800000e01028 r14 0 r15 0 rip 0xffffffff81a54b4c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e4a3500 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.6) pid=445324 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000212778b8,0xffff8000211d98c0 process=0xffff80002128a5c8 user=0xffff80002e49e000, vmspace=0xfffffd8069931af8 estcpu=36, cpticks=21, pctcpu=0.0 user=0, sys=8, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 46610 468021 90413 0 2 0 syz-executor.5 46610 267177 90413 0 2 0x4000000 syz-executor.5 46610 328892 90413 0 2 0x4000000 syz-executor.5 78763 4633 64444 0 2 0 syz-executor.4 78763 104683 64444 0 2 0x4000000 syz-executor.4 78763 369471 64444 0 3 0x4000080 fsleep syz-executor.4 78763 323087 64444 0 3 0x4000080 fsleep syz-executor.4 78763 310408 64444 0 2 0x4000000 syz-executor.4 10359 201259 26903 0 2 0 syz-executor.1 10359 331442 26903 0 3 0x4000080 netcon syz-executor.1 10359 40199 26903 0 2 0x4000000 syz-executor.1 76647 87883 97483 0 2 0 syz-executor.0 76647 426630 97483 0 3 0x4000080 fsleep syz-executor.0 76647 520974 97483 0 3 0x4000080 fsleep syz-executor.0 45016 84546 1 0 2 0x100083 getty 96591 387568 0 0 3 0x14200 acct acct 33172 406068 69994 0 2 0x2 syz-executor.3 36779 3819 69994 0 2 0x2 syz-executor.2 44574 449794 0 0 3 0x14280 nfsidl nfsio 82557 23456 0 0 3 0x14280 nfsidl nfsio 26309 189376 0 0 3 0x14280 nfsidl nfsio 67985 311142 0 0 3 0x14280 nfsidl nfsio 72199 403775 0 0 3 0x14280 nfsidl nfsio 58879 317265 0 0 3 0x14280 nfsidl nfsio 68794 23837 0 0 3 0x14280 nfsidl nfsio 52120 517491 0 0 3 0x14280 nfsidl nfsio 83796 180951 0 0 3 0x14280 nfsidl nfsio 304 95608 0 0 3 0x14280 nfsidl nfsio 6117 259409 0 0 3 0x14280 nfsidl nfsio 12973 166944 0 0 3 0x14280 nfsidl nfsio 10779 3125 0 0 3 0x14280 nfsidl nfsio 10093 322964 0 0 3 0x14280 nfsidl nfsio 78787 459780 0 0 3 0x14280 nfsidl nfsio 66206 122142 0 0 3 0x14280 nfsidl nfsio 7683 351149 0 0 3 0x14280 nfsidl nfsio 76654 156972 0 0 3 0x14280 nfsidl nfsio 2643 439923 0 0 3 0x14280 nfsidl nfsio 58007 364317 0 0 3 0x14280 nfsidl nfsio 90413 457340 69994 0 2 0x2 syz-executor.5 1943 101840 0 0 3 0x14200 bored sosplice 52536 102577 69994 0 2 0x2 syz-executor.7 79304 484074 69994 0 2 0x482 syz-executor.6 64444 352335 69994 0 2 0x482 syz-executor.4 26903 286085 69994 0 2 0x482 syz-executor.1 97483 455555 69994 0 2 0x482 syz-executor.0 69994 404340 47093 0 3 0x2000082 wait syz-fuzzer 69994 26993 47093 0 2 0x6000482 syz-fuzzer 69994 83030 47093 0 3 0x6000082 thrsleep syz-fuzzer 69994 420362 47093 0 3 0x6000082 thrsleep syz-fuzzer 69994 197612 47093 0 3 0x6000082 kqread syz-fuzzer 69994 93995 47093 0 3 0x6000082 wait syz-fuzzer 69994 389792 47093 0 3 0x6000082 wait syz-fuzzer 69994 393884 47093 0 3 0x6000082 wait syz-fuzzer 69994 388014 47093 0 3 0x6000082 thrsleep syz-fuzzer 69994 82661 47093 0 3 0x6000082 thrsleep syz-fuzzer 69994 302154 47093 0 3 0x6000082 thrsleep syz-fuzzer 69994 217717 47093 0 3 0x6000082 wait syz-fuzzer 69994 342830 47093 0 3 0x6000082 wait syz-fuzzer 69994 154228 47093 0 3 0x6000082 wait syz-fuzzer 69994 321011 47093 0 3 0x6000082 thrsleep syz-fuzzer 69994 37438 47093 0 3 0x6000082 thrsleep syz-fuzzer 69994 253665 47093 0 3 0x6000082 wait syz-fuzzer 47093 288595 43060 0 3 0x10008a sigsusp ksh 43060 131090 94055 0 3 0x9a kqread sshd 94055 190337 1 0 3 0x88 kqread sshd 40028 368397 80376 74 3 0x1100092 bpf pflogd 80376 464230 1 0 3 0x80 netio pflogd 73979 397122 14918 73 2 0x1100090 syslogd 14918 133781 1 0 3 0x100082 netio syslogd 13444 481339 1 0 3 0x100080 kqread resolvd 11600 28086 46374 77 3 0x100092 kqread dhcpleased 31242 132337 46374 77 3 0x100092 kqread dhcpleased 46374 202599 1 0 3 0x80 kqread dhcpleased 66917 428800 0 0 3 0x14200 bored smr 73232 114128 0 0 2 0x14200 zerothread 99276 316980 0 0 3 0x14200 aiodoned aiodoned 58941 34419 0 0 3 0x14200 syncer update 29065 112762 0 0 3 0x14200 cleaner cleaner 67259 461422 0 0 7 0x14200 reaper 53058 255046 0 0 3 0x14200 pgdaemon pagedaemon 53351 390381 0 0 3 0x14200 bored viomb 15359 259854 0 0 3 0x40014200 acpi0 acpi0 3170 189885 0 0 3 0x40014200 idle1 64095 236906 0 0 3 0x14200 bored softnet3 98371 522949 0 0 3 0x14200 bored softnet2 16184 67415 0 0 3 0x14200 bored softnet1 30486 291140 0 0 3 0x14200 bored softnet0 37408 491924 0 0 3 0x14200 bored systqmp 91247 94203 0 0 3 0x14200 bored systq 14056 52630 0 0 2 0x40014200 softclock 98127 367472 0 0 3 0x40014200 idle0 1 30203 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 46610 (syz-executor.5) thread 0xffff80002129c5d8 (267177) exclusive rwlock fdlock r = 0 (0xfffffd806f4d8c00) #0 witness_lock+0x447 #1 dopipe+0xda #2 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #2 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #3 Xsyscall+0x128 Process 78763 (syz-executor.4) thread 0xffff80002129ce00 (310408) exclusive rwlock vmmaplk r = 0 (0xfffffd8008a0e498) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5345 #3 uvmfault_lookup+0xb6 sys/uvm/uvm_fault.c:1767 #4 uvm_fault_check+0x65d uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #4 uvm_fault_check+0x65d sys/uvm/uvm_fault.c:711 #5 uvm_fault+0xf2 sys/uvm/uvm_fault.c:601 #6 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 10359 (syz-executor.1) thread 0xffff80002129d0b8 (40199) exclusive rwlock vmmaplk r = 0 (0xfffffd80699314b0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5345 #3 uvmfault_lookup+0xb6 sys/uvm/uvm_fault.c:1767 #4 uvm_fault_check+0x65d uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #4 uvm_fault_check+0x65d sys/uvm/uvm_fault.c:711 #5 uvm_fault+0xf2 sys/uvm/uvm_fault.c:601 #6 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 36779 (syz-executor.2) thread 0xffff8000212b6b30 (3819) exclusive rwlock vmmaplk r = 0 (0xfffffd8069931dc0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5345 #3 uvmspace_fork+0xb6 sys/uvm/uvm_map.c:3903 #4 process_new+0x304 sys/kern/kern_fork.c:262 #5 fork1+0x318 sys/kern/kern_fork.c:383 #6 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #6 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd8069931110) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5345 #3 uvmspace_fork+0x3b sys/uvm/uvm_map.c:3894 #4 process_new+0x304 sys/kern/kern_fork.c:262 #5 fork1+0x318 sys/kern/kern_fork.c:383 #6 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #6 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #7 Xsyscall+0x128 Process 67259 (reaper) thread 0xffff8000211ad310 (461422) exclusive rwlock kmmaplk r = 0 (0xffffffff82d0cfc0) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5345 #3 uvm_unmap+0x7c sys/uvm/uvm_map.c:1855 #4 uvm_uarea_free+0x39 sys/uvm/uvm_glue.c:288 #5 reaper+0x168 sys/kern/kern_exit.c:438 #6 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10210 6487K 7058K 78643K 16615 0 pcb 13 14K 15K 78643K 299 0 rtable 239 7K 7K 78643K 561 0 pf 32 9K 10K 78643K 146 0 ifaddr 45 15K 16K 78643K 109 0 ifgroup 55 2K 2K 78643K 206 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 36K 78643K 152 0 ioctlops 0 0K 4K 78643K 1617 0 iov 1 12K 30K 78643K 413 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1571 98K 99K 78643K 3330 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 33 0 VM map 2 1K 1K 78643K 2 0 sem 10 1K 1K 78643K 10 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 15 53K 85K 78643K 3838 0 sigio 0 0K 0K 78643K 132 0 proc 75 115K 115K 78643K 881 0 subproc 104 6K 6K 78643K 156 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 127 0 in_multi 99 7K 7K 78643K 150 0 ether_multi 1 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 151 678K 678K 78643K 151 0 exec 0 0K 1K 78643K 954 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 390 93K 97K 78643K 40231 0 UVM aobj 131 8K 8K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 62 0 NDP 12 0K 1K 78643K 82 0 temp 74 5920K 5988K 78643K 25003 0 kqueue 16 26K 30K 78643K 998 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 140 0 137 2 1 1 2 0 8 0 rtentry 112 168 0 57 4 0 4 4 0 8 0 unpcb 144 2530 0 2515 47 43 4 10 0 8 3 syncache 296 30 0 30 6 6 0 1 0 8 0 tcpqe 32 408 0 408 7 7 0 2 0 8 0 tcpcb 808 2329 0 2314 56 48 8 11 0 8 5 arp 120 27 0 8 1 0 1 1 0 8 0 inpcb 368 6053 0 6029 68 60 8 14 0 8 5 nd6 136 38 0 14 1 0 1 1 0 8 0 pkpcb 40 10 0 10 2 2 0 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1256 22 0 22 5 4 1 1 0 8 1 pffrag 232 97 0 89 1 0 1 1 0 482 0 pffrnode 88 95 0 87 1 0 1 1 0 8 0 pffrent 40 285 0 277 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 93 0 78 1 0 1 1 0 8 0 pfstkey 128 93 0 78 1 0 1 1 0 8 0 pfstate 376 93 0 78 4 2 2 4 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 639 0 180 29 0 29 29 0 8 0 art_table 32 640 0 180 4 0 4 4 0 8 0 art_node 16 157 0 56 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 6543 0 5077 92 0 92 92 0 8 0 ffsino 272 6543 0 5077 99 0 99 99 0 8 0 nchpl 144 11602 0 9949 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 39138 0 39137 3 2 1 2 0 8 0 percpumem 16 89 0 46 1 0 1 1 0 8 0 kstatmem 264 116 0 92 2 0 2 2 0 8 0 scxspl 216 34037 0 34037 16 15 1 8 1 8 1 plimitpl 152 540 0 524 1 0 1 1 0 8 0 sigapl 424 4180 0 4112 9 1 8 8 0 8 0 futexpl 64 31452 0 31448 1 0 1 1 0 8 0 knotepl 120 281 0 0 7 0 7 7 0 8 0 kqueuepl 216 1382 0 1370 10 9 1 5 0 8 0 pipepl 320 1443 0 1413 24 21 3 8 0 8 0 fdescpl 496 4139 0 4111 5 1 4 5 0 8 0 filepl 152 26907 0 26652 68 53 15 20 0 8 4 lockfpl 104 1232 0 1230 2 1 1 2 0 8 0 lockfspl 48 560 0 558 1 0 1 1 0 8 0 sessionpl 144 30 0 13 1 0 1 1 0 8 0 pgrppl 48 126 0 109 1 0 1 1 0 8 0 ucredpl 104 3040 0 3025 2 1 1 2 0 8 0 zombiepl 144 4315 0 4314 1 0 1 1 0 8 0 processpl 1072 4181 0 4112 5 0 5 5 0 8 0 procpl 696 11081 0 10984 14 4 10 10 0 8 0 sosppl 168 54 0 51 6 5 1 1 0 8 0 sockpl 488 8733 0 8691 190 175 15 36 0 8 8 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 21 0 0 3 1 2 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 13 0 0 1 0 1 1 0 8 0 mcl8k 8192 15 0 0 2 0 2 2 0 8 0 mcl4k 4096 25 0 0 4 1 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 307 0 0 38 0 38 38 0 8 0 mtagpl 96 359 0 0 9 0 9 9 0 8 0 mbufpl 256 626 0 0 36 0 36 36 0 8 0 bufpl 288 9980 0 3656 452 0 452 452 0 8 0 anonpl 24 491147 0 476474 128 36 92 107 0 186 0 amapchunkpl 152 125976 0 125045 58 17 41 41 0 158 2 amappl16 200 10574 0 10145 49 24 25 36 0 8 1 amappl15 192 14 0 14 1 1 0 1 0 8 0 amappl14 184 183 0 169 2 1 1 2 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 4886 0 4853 3 1 2 2 0 8 0 amappl11 160 145 0 131 1 0 1 1 0 8 0 amappl10 152 28 0 19 1 0 1 1 0 8 0 amappl9 144 244 0 244 6 5 1 1 0 8 1 amappl8 136 318 0 227 4 0 4 4 0 8 0 amappl7 128 84 0 68 2 1 1 2 0 8 0 amappl6 120 306 0 285 2 1 1 2 0 8 0 amappl5 112 327 0 315 1 0 1 1 0 8 0 amappl4 104 674 0 628 3 1 2 3 0 8 0 amappl3 96 25262 0 25172 4 1 3 3 0 8 0 amappl2 88 4523 0 4447 3 1 2 3 0 8 0 amappl1 80 23411 0 22853 23 9 14 23 0 8 0 amappl 88 39558 0 39310 8 1 7 7 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 4139 0 4110 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4139 0 4110 1 0 1 1 0 8 0 vmmpekpl 168 39800 0 39733 4 0 4 4 0 8 0 vmmpepl 168 261783 0 259393 200 88 112 127 0 357 1 vmsppl 464 4138 0 4110 5 1 4 5 0 8 0 rwobjpl 56 74517 0 66881 113 3 110 111 0 8 0 pdppl 4096 8286 0 8220 258 188 70 80 0 8 4 pvpl 32 1283249 0 1262466 398 225 173 369 0 265 1 pmappl 248 4138 0 4110 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1155 0 306 25 0 25 25 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800000e01028,9,0) at witness_checkorder+0x13c witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000e01028,9,0) at witness_checkorder+0x13c sys/kern/subr_witness.c:777 rw_enter_write(ffff800000e01018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e01000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000e01000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002128a5c8) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff8000212b7b80,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff8000212b7b80,ffff80002e4a3770,ffff80002e4a37c0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e4a3840) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e4a3840) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e86b60d7850, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d58ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:154 __mp_acquire_count(ffffffff82cb5dd0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x4c6 sys/kern/sched_bsd.c:470 yield() at yield+0x5b sys/kern/sched_bsd.c:324 pool_get(ffffffff82d352b8,1) at pool_get+0x19d sys/kern/subr_pool.c:589 uvm_mapent_alloc(ffffffff82d0cec8,0) at uvm_mapent_alloc+0x2ff sys/uvm/uvm_map.c:1542 uvm_map_clip_start(ffffffff82d0cec8,fffffd80677d29e8,ffff80002e4aa000) at uvm_map_clip_start+0x9b sys/uvm/uvm_map.c:4722 uvm_unmap_remove(ffffffff82d0cec8,ffff80002e4aa000,ffff80002e4b0000,ffff8000211b98d0,0,1,41ec7cefbb1a5c8b) at uvm_unmap_remove+0x3a1 uvm_unmap(ffffffff82d0cec8,ffff80002e4aa000,ffff80002e4b0000) at uvm_unmap+0x9d vm_map_unlock_ln sys/uvm/uvm_map.c:5379 [inline] uvm_unmap(ffffffff82d0cec8,ffff80002e4aa000,ffff80002e4b0000) at uvm_unmap+0x9d sys/uvm/uvm_map.c:1856 uvm_uarea_free(ffff8000211d8038) at uvm_uarea_free+0x39 sys/uvm/uvm_glue.c:288 reaper(ffff8000211ad310) at reaper+0x168 sys/kern/kern_exit.c:438 end trace frame: 0x0, count: -14