witness: lock_object uninitialized: 0xffff800001012028 Starting stack trace... witness_checkorder(ffff800001012028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800001012028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800001012018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800001012000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800001012000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002129b618) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff800024beba48,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:219 sys_exit(ffff800024beba48,ffff80002e58d350,ffff80002e58d3a0) at sys_exit+0x16 sys/kern/kern_exit.c:89 syscall(ffff80002e58d420) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002e58d420) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb7c0, count: 249 End of stack trace. Stopped at db_enter+0x18: 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+0x18 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800001012028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800001012028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800001012018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800001012000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800001012000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002129b618) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff800024beba48,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:219 sys_exit(ffff800024beba48,ffff80002e58d350,ffff80002e58d3a0) at sys_exit+0x16 sys/kern/kern_exit.c:89 syscall(ffff80002e58d420) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002e58d420) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb7c0, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002e58d0f0 rbx 0x3 rdx 0 rcx 0 rax 0xffff800024beba48 r8 0xffff80002e58d090 r9 0x8080808080808080 r10 0x3eabca95a7abdcc5 r11 0xb568ebbf930b9c97 r12 0xffff800001012001 r13 0xffff800001012028 r14 0 r15 0 rip 0xffffffff81feffe8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002e58d0e0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=126983 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002e53a550,0xffff800024beb278 process=0xffff80002129b618 user=0xffff80002e588000, vmspace=0xfffffd805ad76478 estcpu=36, cpticks=19, pctcpu=0.0 user=0, sys=8, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 25917 188903 43369 0 2 0 syz-executor.2 34630 255192 68894 0 2 0 syz-executor.7 56839 405855 17007 0 2 0x480 syz-executor.6 56839 421912 17007 0 3 0x4000080 fsleep syz-executor.6 56839 254256 17007 0 2 0x4000000 syz-executor.6 56839 27776 17007 0 3 0x4000080 fsleep syz-executor.6 68894 323000 17928 0 2 0x482 syz-executor.7 71168 181369 17928 0 2 0x482 syz-executor.4 68496 236978 17928 0 2 0x482 syz-executor.0 43369 487876 17928 0 2 0x482 syz-executor.2 17007 343196 17928 0 2 0x482 syz-executor.6 62368 200780 17928 0 3 0x82 piperd syz-executor.1 54321 314285 17928 0 2 0x2 syz-executor.5 23589 461413 17928 0 3 0x82 piperd syz-executor.3 37367 41655 0 0 3 0x14280 nfsidl nfsio 15584 140154 0 0 3 0x14280 nfsidl nfsio 55896 86599 0 0 3 0x14280 nfsidl nfsio 56029 340999 0 0 3 0x14280 nfsidl nfsio 40962 323612 0 0 3 0x14280 nfsidl nfsio 78132 295002 0 0 3 0x14280 nfsidl nfsio 21180 507270 0 0 3 0x14280 nfsidl nfsio 14013 140619 0 0 3 0x14280 nfsidl nfsio 19368 318590 0 0 3 0x14280 nfsidl nfsio 73350 321569 0 0 3 0x14280 nfsidl nfsio 43317 454411 0 0 3 0x14280 nfsidl nfsio 94129 128229 0 0 3 0x14280 nfsidl nfsio 79642 167690 0 0 3 0x14280 nfsidl nfsio 83908 15582 0 0 3 0x14280 nfsidl nfsio 94119 6694 0 0 3 0x14280 nfsidl nfsio 59010 299730 0 0 3 0x14280 nfsidl nfsio 55045 387244 0 0 3 0x14280 nfsidl nfsio 73865 129133 0 0 3 0x14280 nfsidl nfsio 20533 119387 0 0 3 0x14280 nfsidl nfsio 61099 212335 0 0 3 0x14280 nfsidl nfsio 60303 131846 1 0 2 0x100083 getty 95667 494285 0 0 3 0x14200 bored sosplice 17928 317784 60605 0 3 0x82 wait syz-fuzzer 17928 379809 60605 0 3 0x4000082 thrsleep syz-fuzzer 17928 269681 60605 0 3 0x4000082 thrsleep syz-fuzzer 17928 214170 60605 0 3 0x4000082 wait syz-fuzzer 17928 329184 60605 0 3 0x4000082 thrsleep syz-fuzzer 17928 212365 60605 0 3 0x4000082 wait syz-fuzzer 17928 393387 60605 0 3 0x4000082 wait syz-fuzzer 17928 327339 60605 0 3 0x4000082 wait syz-fuzzer 17928 2432 60605 0 3 0x4000082 thrsleep syz-fuzzer 17928 227206 60605 0 3 0x4000082 kqread syz-fuzzer 17928 280114 60605 0 3 0x4000082 wait syz-fuzzer 17928 204161 60605 0 3 0x4000082 thrsleep syz-fuzzer 17928 27495 60605 0 3 0x4000082 wait syz-fuzzer 17928 431066 60605 0 3 0x4000082 thrsleep syz-fuzzer 17928 211200 60605 0 3 0x4000082 thrsleep syz-fuzzer 17928 135962 60605 0 3 0x4000082 wait syz-fuzzer 60605 87170 63473 0 3 0x10008a sigsusp ksh 63473 355480 66092 0 3 0x9a kqread sshd 66092 132270 1 0 3 0x88 kqread sshd 3896 72489 38762 74 3 0x1100092 bpf pflogd 38762 329351 1 0 3 0x80 netio pflogd 43176 100252 24585 73 2 0x1100090 syslogd 24585 320708 1 0 3 0x100082 netio syslogd 72530 312034 1 0 3 0x100080 kqread resolvd 95225 179017 83813 77 3 0x100092 kqread dhcpleased 97340 487555 83813 77 3 0x100092 kqread dhcpleased 83813 243711 1 0 3 0x80 kqread dhcpleased 93469 119443 0 0 3 0x14200 bored smr 96573 489538 0 0 2 0x14200 zerothread 68299 42065 0 0 3 0x14200 aiodoned aiodoned 57898 384934 0 0 3 0x14200 syncer update 27822 471518 0 0 3 0x14200 cleaner cleaner 56194 471103 0 0 2 0x14200 reaper 48405 368049 0 0 3 0x14200 pgdaemon pagedaemon 51859 409580 0 0 3 0x14200 bored viomb 18273 74328 0 0 3 0x40014200 acpi0 acpi0 4966 191677 0 0 7 0x40014200 idle1 97740 65310 0 0 3 0x14200 bored softnet 6879 100567 0 0 3 0x14200 bored softnet 20555 144478 0 0 3 0x14200 bored softnet 9375 92579 0 0 3 0x14200 bored softnet 20139 208837 0 0 3 0x14200 bored systqmp 72867 339879 0 0 3 0x14200 bored systq 23547 392115 0 0 2 0x40014200 softclock 79577 52276 0 0 3 0x40014200 idle0 1 138743 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 25917 (syz-executor.2) thread 0xffff800024beb7a8 (188903) exclusive rwlock vmmaplk r = 0 (0xfffffd805ad76040) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5292 #3 uvmfault_lookup+0xb9 sys/uvm/uvm_fault.c:1766 #4 uvm_fault_check+0x660 uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #4 uvm_fault_check+0x660 sys/uvm/uvm_fault.c:711 #5 uvm_fault+0xf2 sys/uvm/uvm_fault.c:601 #6 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #7 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #8 recall_trap+0x8 Process 34630 (syz-executor.7) thread 0xffff800024bead28 (255192) exclusive rwlock vmmaplk r = 0 (0xfffffd805ad76770) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5292 #3 uvmfault_lookup+0xb9 sys/uvm/uvm_fault.c:1766 #4 uvm_fault_check+0x660 uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #4 uvm_fault_check+0x660 sys/uvm/uvm_fault.c:711 #5 uvm_fault+0xf2 sys/uvm/uvm_fault.c:601 #6 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #7 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #8 recall_trap+0x8 Process 54321 (syz-executor.5) thread 0xffff800024beaa88 (314285) exclusive rwlock vmmaplk r = 0 (0xfffffd805ad76a50) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5292 #3 uvmspace_fork+0x103 sys/uvm/uvm_map.c:3905 #4 process_new+0x304 sys/kern/kern_fork.c:260 #5 fork1+0x30b sys/kern/kern_fork.c:379 #6 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #6 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd807390ebc0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5292 #3 uvmspace_fork+0x37 sys/uvm/uvm_map.c:3896 #4 process_new+0x304 sys/kern/kern_fork.c:260 #5 fork1+0x30b sys/kern/kern_fork.c:379 #6 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] #6 syscall+0x435 sys/arch/amd64/amd64/trap.c:585 #7 Xsyscall+0x128 Process 56194 (reaper) thread 0xffff8000212337a8 (471103) exclusive rwlock kmmaplk r = 0 (0xffffffff82a2dfe0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5292 #3 uvm_unmap+0x78 sys/uvm/uvm_map.c:1845 #4 uvm_uarea_free+0x35 sys/uvm/uvm_glue.c:288 #5 reaper+0x168 sys/kern/kern_exit.c:437 #6 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10249 6528K 7449K 78643K 54403 0 pcb 24 26K 30K 78643K 4237 0 rtable 232 21K 23K 78643K 7323 0 ifaddr 169 47K 55K 78643K 3738 0 sysctl 3 1K 1K 78643K 11 0 counters 56 35K 36K 78643K 2104 0 ioctlops 0 0K 6K 78643K 8093 0 iov 0 0K 28K 78643K 4593 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1536 96K 96K 78643K 15178 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 272 0 VM map 2 1K 1K 78643K 2 0 sem 22 16K 32K 78643K 227 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 14 49K 93K 78643K 27636 0 sigio 1 0K 0K 78643K 539 0 proc 72 115K 115K 78643K 4722 0 subproc 104 6K 7K 78643K 1472 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1985 0 in_multi 83 5K 6K 78643K 1918 0 ether_multi 1 0K 0K 78643K 154 0 mrt 1 0K 0K 78643K 162 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 2K 78643K 6782 0 pfkey data 0 0K 0K 78643K 7 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 782 2102K 2103K 78643K 158632 0 UVM aobj 131 8K 8K 78643K 142 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1107 0 NDP 16 0K 2K 78643K 772 0 temp 145 4734K 70270K 78643K 202442 0 kqueue 12 18K 24K 78643K 1781 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 1645 0 1642 21 20 1 3 0 8 0 rtentry 112 1892 0 1806 4 0 4 4 0 8 0 unpcb 144 26618 0 26603 230 224 6 10 0 8 5 syncache 296 179 0 179 43 43 0 1 0 8 0 tcpqe 32 151 0 151 15 15 0 1 0 8 0 tcpcb 768 52987 0 52977 1513 1504 9 48 0 8 7 arp 120 242 0 229 1 0 1 1 0 8 0 inpcb 368 68847 0 68829 925 916 9 29 0 8 7 ip6q 72 3 0 3 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 48 393 0 372 1 0 1 1 0 8 0 pkpcb 40 100 0 100 15 15 0 1 0 8 0 kcovpl 48 112 0 104 1 0 1 1 0 8 0 ppxss 1256 669 0 669 50 49 1 1 0 8 1 pppxif 1704 387 0 387 38 38 0 1 0 8 0 pfstscr 40 98 0 98 10 10 0 1 0 8 0 pffrag 232 133 0 130 5 4 1 1 0 482 0 pffrnode 88 131 0 128 5 4 1 1 0 8 0 pffrent 40 396 0 393 5 4 1 1 0 8 0 pfosfp 40 1438 0 1012 5 0 5 5 0 8 0 pfosfpen 112 1438 0 719 21 0 21 21 0 8 0 pfrktable 1344 829 0 821 12 11 1 2 0 8 0 pfanchor 1280 733 0 300 40 3 37 37 0 8 0 pftag 88 13 0 11 4 3 1 1 0 8 0 pfqueue 264 6 0 6 2 2 0 1 0 8 0 pfstitem 24 30 0 28 1 0 1 1 0 8 0 pfstkey 120 216 0 214 1 0 1 1 0 8 0 pfstate 336 122 0 120 3 2 1 3 0 8 0 pfrule 1360 347 0 340 5 4 1 2 0 8 0 rttmr 136 43 0 43 13 13 0 1 0 8 0 art_heap8 4096 22 0 21 18 17 1 2 0 8 0 art_heap4 256 8031 0 7596 77 47 30 31 0 8 0 art_table 32 8053 0 7617 4 0 4 4 0 8 0 art_node 16 1878 0 1803 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semapl 112 205 0 185 1 0 1 1 0 8 0 shmpl 112 139 0 11 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 38186 0 36572 102 0 102 102 0 8 0 ffsino 272 38186 0 36572 109 0 109 109 0 8 0 nchpl 144 75581 0 75017 63 39 24 63 0 8 0 rtmask 32 21 0 21 8 8 0 1 0 8 0 uvmvnodes 80 18228 0 0 372 0 372 372 0 8 0 vnodes 216 18228 0 0 1013 0 1013 1013 0 8 0 namei 1024 264722 0 264722 12 11 1 3 0 8 1 percpumem 16 1064 0 1024 1 0 1 1 0 8 0 vcpupl 2048 377 0 0 48 0 48 48 0 8 0 vmpool 568 519 0 142 28 1 27 27 0 8 0 pfiaddrpl 120 328 0 324 5 4 1 1 0 8 0 kstatmem 264 1036 0 1004 7 4 3 3 0 8 0 scsiplug 72 34 0 34 9 9 0 1 0 8 0 scxspl 216 215968 0 215968 49 48 1 8 0 8 1 plimitpl 152 4084 0 4068 1 0 1 1 0 8 0 sigapl 424 27799 0 27732 12 4 8 8 0 8 0 futexpl 64 280792 0 280790 5 4 1 1 0 8 0 knotepl 120 1535 0 0 12 1 11 11 0 8 0 kqueuepl 216 4571 0 4563 81 80 1 5 0 8 0 pipepl 320 5972 0 5944 154 147 7 8 0 8 4 fdescpl 496 27717 0 27690 8 4 4 5 0 8 0 filepl 152 224137 0 223886 370 352 18 25 0 8 8 lockfpl 104 8862 0 8860 11 10 1 2 0 8 0 lockfspl 48 2699 0 2697 1 0 1 1 0 8 0 sessionpl 144 129 0 112 1 0 1 1 0 8 0 pgrppl 48 390 0 373 1 0 1 1 0 8 0 ucredpl 104 24043 0 24021 1 0 1 1 0 8 0 zombiepl 144 29900 0 29898 7 6 1 1 0 8 0 processpl 1064 27799 0 27732 5 0 5 5 0 8 0 procpl 672 74823 0 74737 47 38 9 10 0 8 0 srpgc 96 124 0 124 35 35 0 1 0 8 0 sosppl 168 204 0 204 32 32 0 1 0 8 0 sockpl 488 97251 0 97214 1998 1986 12 45 0 8 7 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 33 0 0 2 0 2 2 0 8 0 mcl9k 9216 20 0 0 2 0 2 2 0 8 0 mcl8k 8192 34 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 531 0 0 47 22 25 47 0 8 0 mtagpl 96 1253 0 0 12 0 12 12 0 8 0 mbufpl 256 7796 0 0 420 0 420 420 0 8 0 bufpl 288 46210 0 38280 568 1 567 567 0 8 0 anonpl 24 5404588 0 5385867 295 163 132 147 0 186 0 amapchunkpl 152 468813 0 468077 171 138 33 46 0 158 0 amappl16 200 78535 0 77813 324 284 40 51 0 8 0 amappl15 192 3953 0 3938 2 1 1 2 0 8 0 amappl14 184 1632 0 1621 1 0 1 1 0 8 0 amappl13 176 3041 0 3039 1 0 1 1 0 8 0 amappl12 168 5096 0 5093 2 1 1 1 0 8 0 amappl11 160 4432 0 4412 2 1 1 2 0 8 0 amappl10 152 4653 0 4646 1 0 1 1 0 8 0 amappl9 144 1670 0 1662 2 1 1 1 0 8 0 amappl8 136 8191 0 8012 9 2 7 7 0 8 0 amappl7 128 5630 0 5607 1 0 1 1 0 8 0 amappl6 120 1641 0 1611 3 2 1 2 0 8 0 amappl5 112 23500 0 23484 1 0 1 1 0 8 0 amappl4 104 10523 0 10474 7 5 2 2 0 8 0 amappl3 96 87534 0 87481 3 1 2 2 0 8 0 amappl2 88 33647 0 33576 3 1 2 3 0 8 0 amappl1 80 652794 0 652062 24 6 18 22 0 8 0 amappl 88 155755 0 155423 11 2 9 9 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 72 141 0 11 3 0 3 3 0 8 0 uaddrrnd 24 28236 0 27831 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 28236 0 27831 3 0 3 3 0 8 0 vmmpekpl 168 199638 0 199534 6 0 6 6 0 8 0 vmmpepl 168 2721497 0 2717755 594 408 186 211 0 357 0 vmsppl 368 28235 0 27831 41 3 38 38 0 8 0 rwobjpl 56 667599 0 647080 329 38 291 291 0 8 0 pdppl 4096 56479 0 56039 1447 1001 446 446 0 8 6 pvpl 32 10563502 0 10538924 739 526 213 273 0 265 0 pmappl 248 28235 0 27831 29 3 26 26 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 3890 0 2075 52 0 52 52 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800001012028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800001012028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800001012018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800001012000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800001012000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002129b618) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff800024beba48,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:219 sys_exit(ffff800024beba48,ffff80002e58d350,ffff80002e58d3a0) at sys_exit+0x16 sys/kern/kern_exit.c:89 syscall(ffff80002e58d420) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline] syscall(ffff80002e58d420) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb7c0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020dd8ff0) at x86_ipi_db+0x1a 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+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020dd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:175 end trace frame: 0x0, count: -5