witness: lock_object uninitialized: 0xffff800000dce028 Starting stack trace... witness_checkorder(ffff800000dce028,9,0) at witness_checkorder+0x137 witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000dce028,9,0) at witness_checkorder+0x137 sys/kern/subr_witness.c:777 rw_enter_write(ffff800000dce018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000dce000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000dce000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002e431510) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff800027b39348,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff800027b39348,ffff80002e45db60,ffff80002e45dbb0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e45dc30) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e45dc30) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75054a8d17c0, count: 249 End of stack trace. Stopped at db_enter+0x1c: addq $0x8,%rsp ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800000dce028,9,0) at witness_checkorder+0x13c witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000dce028,9,0) at witness_checkorder+0x13c sys/kern/subr_witness.c:777 rw_enter_write(ffff800000dce018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000dce000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000dce000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002e431510) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff800027b39348,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff800027b39348,ffff80002e45db60,ffff80002e45dbb0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e45dc30) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e45dc30) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75054a8d17c0, count: -9 ddb{1}> show registers rdi 0 rsi 0x4000000000000000 rbp 0xffff80002e45d900 rbx 0x3 rdx 0 rcx 0xffff800027b39348 rax 0xffff800020d58ff0 r8 0xffff80002e45d8a0 r9 0x8080808080808080 r10 0xffff80002e45d7f0 r11 0x8efcaa82244022b8 r12 0xffff800000dce001 r13 0xffff800000dce028 r14 0 r15 0 rip 0xffffffff8275560c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002e45d8f0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.6) pid=473017 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000211d98b0,0xffff800027b385c0 process=0xffff80002e431510 user=0xffff80002e458000, vmspace=0xfffffd806995ecc8 estcpu=36, cpticks=13, pctcpu=0.0 user=0, sys=8, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 65565 123640 9651 0 2 0 syz-executor.4 65565 42236 9651 0 2 0x4000000 syz-executor.4 60933 310499 2607 0 2 0 syz-executor.3 60933 307043 2607 0 2 0x4000000 syz-executor.3 20428 313680 21845 0 2 0 syz-executor.5 20428 397641 21845 0 3 0x4000080 fsleep syz-executor.5 8724 341450 52106 0 3 0x82 nanoslp syz-executor.6 21845 158732 52106 0 2 0x2 syz-executor.5 44918 5404 0 0 3 0x14200 acct acct 2607 172327 52106 0 3 0x82 nanoslp syz-executor.3 9651 517597 52106 0 3 0x82 nanoslp syz-executor.4 6290 191602 52106 0 2 0x2 syz-executor.0 97972 367310 52106 0 3 0x82 piperd syz-executor.7 76291 58723 0 0 3 0x14280 nfsidl nfsio 86139 418665 0 0 3 0x14280 nfsidl nfsio 31033 87837 0 0 3 0x14280 nfsidl nfsio 8072 57940 0 0 3 0x14280 nfsidl nfsio 61627 132952 0 0 3 0x14280 nfsidl nfsio 33616 90772 0 0 3 0x14280 nfsidl nfsio 12214 352903 0 0 3 0x14280 nfsidl nfsio 85820 341806 0 0 3 0x14280 nfsidl nfsio 94134 247205 0 0 3 0x14280 nfsidl nfsio 69561 500894 0 0 3 0x14280 nfsidl nfsio 30087 115649 0 0 3 0x14280 nfsidl nfsio 51309 505642 0 0 3 0x14280 nfsidl nfsio 83871 307444 0 0 3 0x14280 nfsidl nfsio 78965 142007 0 0 3 0x14280 nfsidl nfsio 88374 84309 0 0 3 0x14280 nfsidl nfsio 40477 17296 0 0 3 0x14280 nfsidl nfsio 57160 175747 0 0 3 0x14280 nfsidl nfsio 31193 185256 0 0 3 0x14280 nfsidl nfsio 82659 235644 0 0 3 0x14280 nfsidl nfsio 11634 414368 0 0 3 0x14280 nfsidl nfsio 59885 477399 0 0 3 0x14200 bored sosplice 60419 498631 52106 0 2 0x2 syz-executor.2 75112 437548 52106 0 2 0x2 syz-executor.1 52106 24075 49437 0 2 0x2000002 syz-fuzzer 52106 195747 49437 0 3 0x6000082 nanoslp syz-fuzzer 52106 372355 49437 0 3 0x6000082 thrsleep syz-fuzzer 52106 60623 49437 0 3 0x6000082 thrsleep syz-fuzzer 52106 84791 49437 0 3 0x6000082 thrsleep syz-fuzzer 52106 11456 49437 0 3 0x6000082 wait syz-fuzzer 52106 400435 49437 0 2 0x6000002 syz-fuzzer 52106 375788 49437 0 3 0x6000082 wait syz-fuzzer 52106 121470 49437 0 3 0x6000082 thrsleep syz-fuzzer 52106 200509 49437 0 3 0x6000082 thrsleep syz-fuzzer 52106 59076 49437 0 3 0x6000082 thrsleep syz-fuzzer 52106 402954 49437 0 3 0x6000082 wait syz-fuzzer 52106 193397 49437 0 3 0x6000082 wait syz-fuzzer 52106 234598 49437 0 3 0x6000082 wait syz-fuzzer 52106 81795 49437 0 3 0x6000082 wait syz-fuzzer 52106 440299 49437 0 3 0x6000082 wait syz-fuzzer 52106 392249 49437 0 3 0x6000082 wait syz-fuzzer 49437 466941 775 0 3 0x10008a sigsusp ksh 775 29780 13186 0 3 0x9a kqread sshd 76967 214415 1 0 3 0x100083 ttyin getty 13186 441008 1 0 3 0x88 kqread sshd 79847 501683 2089 74 3 0x1100092 bpf pflogd 2089 76915 1 0 3 0x80 netio pflogd 11178 364543 55062 73 3 0x1100090 kqread syslogd 55062 307632 1 0 3 0x100082 netio syslogd 36550 308516 1 0 3 0x100080 kqread resolvd 53130 466714 86450 77 3 0x100092 kqread dhcpleased 1006 70833 86450 77 3 0x100092 kqread dhcpleased 86450 6348 1 0 3 0x80 kqread dhcpleased 87956 121959 0 0 3 0x14200 bored smr 12212 103705 0 0 2 0x14200 zerothread 13262 467523 0 0 3 0x14200 aiodoned aiodoned 6471 1556 0 0 3 0x14200 syncer update 86293 369055 0 0 3 0x14200 cleaner cleaner 28592 383491 0 0 7 0x14200 reaper 72614 87834 0 0 3 0x14200 pgdaemon pagedaemon 62016 180991 0 0 3 0x14200 bored viomb 32425 279951 0 0 3 0x40014200 acpi0 acpi0 24367 434152 0 0 3 0x40014200 idle1 56743 127873 0 0 3 0x14200 bored softnet3 51464 480922 0 0 3 0x14200 bored softnet2 1258 505626 0 0 3 0x14200 bored softnet1 1901 125175 0 0 3 0x14200 bored softnet0 2935 137062 0 0 3 0x14200 bored systqmp 82536 407314 0 0 3 0x14200 bored systq 65823 466581 0 0 3 0x40014200 bored softclock 81441 309855 0 0 3 0x40014200 idle0 1 28359 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 60419 (syz-executor.2) thread 0xffff8000211fdb50 (498631) exclusive rwlock vmmaplk r = 0 (0xfffffd806e3be2d8) #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 (0xfffffd807eff92c8) #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 75112 (syz-executor.1) thread 0xffff8000211ac2c0 (437548) exclusive rwlock vmmaplk r = 0 (0xfffffd806995e110) #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 (0xfffffd807eff9498) #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 28592 (reaper) thread 0xffff8000211ad310 (383491) exclusive rwlock kmmaplk r = 0 (0xffffffff82cccb10) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10208 6499K 8003K 78643K 100651 0 pcb 13 22K 24K 78643K 733 0 rtable 239 7K 7K 78643K 1149 0 pf 37 10K 10K 78643K 866 0 ifaddr 47 19K 21K 78643K 532 0 ifgroup 64 2K 2K 78643K 1182 0 sysctl 2 0K 0K 78643K 2 0 counters 64 36K 36K 78643K 878 0 ioctlops 0 0K 4K 78643K 2263 0 iov 0 0K 32K 78643K 2100 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1506 94K 95K 78643K 22424 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 13K 78643K 111 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 337 0 dirhash 15 3K 3K 78643K 33 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 81K 78643K 25661 0 sigio 1 0K 0K 78643K 481 0 proc 76 115K 128K 78643K 1728 0 subproc 104 6K 6K 78643K 403 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2119 0 in_multi 99 7K 7K 78643K 1200 0 ether_multi 1 0K 0K 78643K 99 0 mrt 2 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 91 413K 413K 78643K 91 0 exec 0 0K 1K 78643K 1648 0 pfkey data 0 0K 0K 78643K 4 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 506 97K 101K 78643K 233361 0 UVM aobj 131 7K 7K 78643K 132 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 847 0 NDP 14 0K 2K 78643K 481 0 temp 74 5920K 6000K 78643K 148361 0 kqueue 12 18K 30K 78643K 1086 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> 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 120 646 0 643 5 4 1 3 0 8 0 rtentry 112 386 0 275 4 0 4 4 0 8 0 unpcb 144 8753 0 8738 87 86 1 6 0 8 0 syncache 296 148 0 148 21 21 0 1 0 8 0 tcpqe 32 356 0 356 15 15 0 2 0 8 0 tcpcb 808 21066 0 21062 224 222 2 15 0 8 1 arp 120 66 0 48 1 0 1 1 0 8 0 inpcb 368 30892 0 30885 262 260 2 19 0 8 1 nd6 136 94 0 69 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 3 0 1 0 8 0 kcovpl 48 30 0 22 1 0 1 1 0 8 0 ppxss 1256 257 0 257 7 7 0 1 0 8 0 pffrag 232 698 0 698 5 4 1 2 0 482 1 pffrnode 88 465 0 465 4 3 1 1 0 8 1 pffrent 40 1547 0 1547 5 4 1 1 0 8 1 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 24 413 0 394 1 0 1 1 0 8 0 pfstkey 128 413 0 394 4 2 2 4 0 8 0 pfstate 376 413 0 394 17 15 2 13 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 1466 0 994 30 0 30 30 0 8 0 art_table 32 1467 0 994 4 0 4 4 0 8 0 art_node 16 360 0 259 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 12 1 0 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 325 0 315 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 53 0 27 4 0 4 4 0 8 0 dino2pl 256 35537 0 32480 192 0 192 192 0 8 0 ffsino 272 35537 0 32480 205 0 205 205 0 8 0 nchpl 144 68562 0 67776 72 39 33 72 0 8 0 uvmvnodes 80 8161 0 0 167 0 167 167 0 8 0 vnodes 216 8161 0 0 454 0 454 454 0 8 0 namei 1024 216592 0 216592 9 7 2 2 0 8 2 percpumem 16 452 0 407 1 0 1 1 0 8 0 kstatmem 264 842 0 814 6 4 2 3 0 8 0 scxspl 216 205271 0 205271 17 16 1 8 1 8 1 plimitpl 152 621 0 605 1 0 1 1 0 8 0 sigapl 424 25953 0 25884 9 1 8 8 0 8 0 futexpl 64 237018 0 237017 4 3 1 1 0 8 0 knotepl 120 924 0 0 12 1 11 11 0 8 0 kqueuepl 216 3212 0 3204 48 47 1 6 0 8 0 pipepl 320 3568 0 3540 74 71 3 11 0 8 0 fdescpl 496 25913 0 25884 5 1 4 5 0 8 0 filepl 152 139172 0 138934 172 159 13 21 0 8 3 lockfpl 104 4833 0 4831 4 3 1 2 0 8 0 lockfspl 48 2110 0 2108 1 0 1 1 0 8 0 sessionpl 144 46 0 29 1 0 1 1 0 8 0 pgrppl 48 106 0 89 1 0 1 1 0 8 0 ucredpl 104 5961 0 5949 1 0 1 1 0 8 0 zombiepl 144 25985 0 25984 3 2 1 1 0 8 0 processpl 1072 25953 0 25884 5 0 5 5 0 8 0 procpl 696 60132 0 60042 37 27 10 10 0 8 0 sosppl 168 93 0 93 8 8 0 1 0 8 0 sockpl 488 40304 0 40279 586 580 6 29 0 8 2 mcl64k 65536 15 0 0 2 0 2 2 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 12 0 0 2 0 2 2 0 8 0 mcl9k 9216 9 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 789 0 0 39 4 35 39 0 8 0 mtagpl 96 1064 0 0 23 3 20 23 0 8 0 mbufpl 256 1809 0 0 83 0 83 83 0 8 0 bufpl 288 40183 0 32021 585 1 584 584 0 8 0 anonpl 24 2091653 0 2079752 199 116 83 99 0 186 0 amapchunkpl 152 731556 0 730776 103 66 37 42 0 158 2 amappl16 200 38422 0 38033 138 116 22 35 0 8 0 amappl15 192 23 0 22 1 0 1 1 0 8 0 amappl14 184 249 0 232 2 1 1 2 0 8 0 amappl13 176 21 0 20 3 2 1 1 0 8 0 amappl12 168 25057 0 25027 3 1 2 2 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 69 0 55 1 0 1 1 0 8 0 amappl9 144 297 0 295 1 0 1 1 0 8 0 amappl8 136 1230 0 954 10 0 10 10 0 8 0 amappl7 128 132 0 116 2 0 2 2 0 8 0 amappl6 120 563 0 527 2 0 2 2 0 8 0 amappl5 112 622 0 610 1 0 1 1 0 8 0 amappl4 104 956 0 899 3 1 2 3 0 8 0 amappl3 96 146462 0 146383 4 1 3 3 0 8 0 amappl2 88 26826 0 26751 3 1 2 3 0 8 0 amappl1 80 100405 0 99857 23 10 13 23 0 8 0 amappl 88 232255 0 232029 7 0 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 72 131 0 1 3 0 3 3 0 8 0 uaddrrnd 24 25912 0 25883 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 25912 0 25883 1 0 1 1 0 8 0 vmmpekpl 168 170167 0 170099 5 1 4 4 0 8 0 vmmpepl 168 1465854 0 1463351 365 245 120 141 0 357 0 vmsppl 464 25911 0 25883 5 1 4 5 0 8 0 rwobjpl 56 322666 0 312684 158 16 142 143 0 8 0 pdppl 4096 51832 0 51766 630 560 70 78 0 8 4 pvpl 32 6680441 0 6662500 455 296 159 343 0 265 0 pmappl 248 25911 0 25883 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2283 0 1063 36 0 36 36 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82bd4ff0) 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 __mp_lock(ffffffff82cf3cd0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82cf3cd0) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82cf3cd0,1) 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(ffffffff82d389b8,1) at pool_get+0x19d sys/kern/subr_pool.c:589 uvm_mapent_alloc(ffffffff82ccca18,0) at uvm_mapent_alloc+0x2ff sys/uvm/uvm_map.c:1542 uvm_map_clip_start(ffffffff82ccca18,fffffd80681fdc98,ffff80002e48c000) at uvm_map_clip_start+0x9b sys/uvm/uvm_map.c:4722 uvm_unmap_remove(ffffffff82ccca18,ffff80002e48c000,ffff80002e492000,ffff8000211b9250,0,1,b31d3ea72e4596bf) at uvm_unmap_remove+0x3a1 uvm_unmap(ffffffff82ccca18,ffff80002e48c000,ffff80002e492000) at uvm_unmap+0x9d vm_map_unlock_ln sys/uvm/uvm_map.c:5379 [inline] uvm_unmap(ffffffff82ccca18,ffff80002e48c000,ffff80002e492000) at uvm_unmap+0x9d sys/uvm/uvm_map.c:1856 uvm_uarea_free(ffff800027b38b20) 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 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800000dce028,9,0) at witness_checkorder+0x13c witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000dce028,9,0) at witness_checkorder+0x13c sys/kern/subr_witness.c:777 rw_enter_write(ffff800000dce018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000dce000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000dce000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002e431510) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff800027b39348,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:220 sys_exit(ffff800027b39348,ffff80002e45db60,ffff80002e45dbb0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002e45dc30) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002e45dc30) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75054a8d17c0, count: -9