witness: lock_object uninitialized: 0xffff800000df6028 Starting stack trace... witness_checkorder(ffff800000df6028,9,0) at witness_checkorder+0x137 witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000df6028,9,0) at witness_checkorder+0x137 sys/kern/subr_witness.c:777 rw_enter_write(ffff800000df6018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000df6000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000df6000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff800021288448) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff8000212b1098,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:220 single_thread_check_locked(ffff8000212b1098,0,0) at single_thread_check_locked+0x237 sys/kern/kern_sig.c:2015 userret(ffff8000212b1098) at userret+0x7c single_thread_check sys/kern/kern_sig.c:2054 [inline] userret(ffff8000212b1098) at userret+0x7c sys/kern/kern_sig.c:1970 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x782a5cb11f70, 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(ffff800000df6028,9,0) at witness_checkorder+0x13c witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000df6028,9,0) at witness_checkorder+0x13c sys/kern/subr_witness.c:777 rw_enter_write(ffff800000df6018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000df6000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000df6000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff800021288448) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff8000212b1098,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:220 single_thread_check_locked(ffff8000212b1098,0,0) at single_thread_check_locked+0x237 sys/kern/kern_sig.c:2015 userret(ffff8000212b1098) at userret+0x7c single_thread_check sys/kern/kern_sig.c:2054 [inline] userret(ffff8000212b1098) at userret+0x7c sys/kern/kern_sig.c:1970 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x782a5cb11f70, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000212aeeb0 rbx 0x3 rdx 0 rcx 0xffff8000212b1098 rax 0xffff800020d58ff0 r8 0xffff8000212aee50 r9 0x8080808080808080 r10 0x4571931bfe118b3 r11 0xbbed998288369d5c r12 0xffff800000df6001 r13 0xffff800000df6028 r14 0 r15 0 rip 0xffffffff8208966c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff8000212aeea0 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.4) pid=296807 stat=onproc flags process=1008 proc=82000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800021277080,0xffff8000212762f8 process=0xffff800021288448 user=0xffff8000212aa000, vmspace=0xfffffd806993f588 estcpu=36, cpticks=10, pctcpu=0.0 user=0, sys=9, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 66968 255281 3119 0 2 0 syz-executor.7 51867 83707 66054 0 2 0 syz-executor.6 82570 451697 0 0 3 0x14200 acct acct 20025 122089 16163 0 2 0x2 syz-executor.2 5963 42293 16163 0 2 0x3 syz-executor.5 66054 129530 16163 0 3 0x82 nanoslp syz-executor.6 79021 413414 16163 0 2 0x2 syz-executor.0 32245 246143 1 0 3 0x100083 ttyin getty 6428 262908 16163 0 3 0x2 biowait syz-executor.3 3119 447349 16163 0 3 0x82 nanoslp syz-executor.7 61393 432012 16163 0 3 0x82 nanoslp syz-executor.4 9139 99105 0 0 3 0x14200 bored sosplice 22391 305120 16163 0 3 0x82 nanoslp syz-executor.1 16163 119716 91623 0 3 0x2000082 thrsleep syz-fuzzer 16163 34803 91623 0 3 0x6000082 nanoslp syz-fuzzer 16163 47711 91623 0 3 0x6000082 wait syz-fuzzer 16163 474013 91623 0 3 0x6000003 biowait syz-fuzzer 16163 316413 91623 0 3 0x6000082 kqread syz-fuzzer 16163 300135 91623 0 3 0x6000082 thrsleep syz-fuzzer 16163 350128 91623 0 3 0x6000082 wait syz-fuzzer 16163 516543 91623 0 3 0x6000082 wait syz-fuzzer 16163 366317 91623 0 3 0x6000082 thrsleep syz-fuzzer 16163 499566 91623 0 3 0x6000082 wait syz-fuzzer 16163 501735 91623 0 3 0x6000082 thrsleep syz-fuzzer 16163 220338 91623 0 3 0x6000082 wait syz-fuzzer 16163 445070 91623 0 3 0x6000082 wait syz-fuzzer 16163 234278 91623 0 3 0x6000082 wait syz-fuzzer 16163 317628 91623 0 3 0x6000082 thrsleep syz-fuzzer 16163 81294 91623 0 3 0x6000082 wait syz-fuzzer 91623 440316 84102 0 3 0x10008a sigsusp ksh 84102 250688 42926 0 3 0x1b inode sshd 42926 378870 1 0 3 0x88 kqread sshd 83932 197943 74750 74 3 0x1100092 bpf pflogd 74750 206101 1 0 3 0x80 netio pflogd 80316 263375 48660 73 3 0x1100090 kqread syslogd 48660 194313 1 0 3 0x100082 netio syslogd 40345 399755 1 0 3 0x100080 kqread resolvd 51369 279146 14355 77 3 0x100092 kqread dhcpleased 95553 404877 14355 77 3 0x100092 kqread dhcpleased 14355 437922 1 0 3 0x80 kqread dhcpleased 92023 335442 0 0 3 0x14200 bored smr 59592 400096 0 0 2 0x14200 zerothread 37287 132054 0 0 3 0x14200 aiodoned aiodoned 54275 74878 0 0 3 0x14200 syncer update 25008 155 0 0 3 0x14200 cleaner cleaner 94012 162627 0 0 7 0x14200 reaper 98373 499920 0 0 3 0x14200 pgdaemon pagedaemon 42734 51208 0 0 3 0x14200 bored viomb 42595 319438 0 0 3 0x40014200 acpi0 acpi0 35777 460592 0 0 3 0x40014200 idle1 36398 241275 0 0 3 0x14200 bored softnet3 38418 228863 0 0 3 0x14200 bored softnet2 95455 294074 0 0 3 0x14200 bored softnet1 88729 468210 0 0 3 0x14200 bored softnet0 63818 182287 0 0 3 0x14200 bored systqmp 65854 192506 0 0 3 0x14200 bored systq 95386 356103 0 0 3 0x40014200 bored softclock 5317 192196 0 0 3 0x40014200 idle0 1 16533 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 79021 (syz-executor.0) thread 0xffff80002122db50 (413414) exclusive rrwlock inode r = 0 (0xfffffd80661471a8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3058 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 Process 6428 (syz-executor.3) thread 0xffff8000212b0b28 (262908) exclusive rrwlock inode r = 0 (0xfffffd80678a5700) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x200 sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1314 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e2 sys/kern/vfs_lookup.c:566 #11 namei+0x55a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #13 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #13 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80676add68) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1847 #8 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] #8 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623 #9 Xsyscall+0x128 Process 16163 (syz-fuzzer) thread 0xffff800021234af8 (474013) exclusive rrwlock inode r = 0 (0xfffffd806e0d35e8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x200 sys/kern/vfs_subr.c:676 #6 ktrwriteraw+0x13d sys/kern/kern_ktrace.c:661 #7 ktrgenio+0x272 ktrwrite2 sys/kern/kern_ktrace.c:626 [inline] #7 ktrgenio+0x272 sys/kern/kern_ktrace.c:258 #8 dofilewritev+0x39b sys/kern/sys_generic.c:396 #9 sys_write+0x87 sys/kern/sys_generic.c:295 #10 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #10 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #11 Xsyscall+0x128 Process 94012 (reaper) thread 0xffff8000211ac008 (162627) exclusive rwlock kmmaplk r = 0 (0xffffffff82d85b10) #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 10203 6498K 7622K 78643K 13224 0 pcb 13 14K 16K 78643K 759 0 rtable 243 7K 7K 78643K 1137 0 pf 32 9K 10K 78643K 255 0 ifaddr 45 16K 17K 78643K 190 0 ifgroup 55 2K 2K 78643K 393 0 sysctl 3 1K 1K 78643K 3 0 counters 60 35K 36K 78643K 244 0 ioctlops 0 0K 4K 78643K 1700 0 iov 0 0K 24K 78643K 1803 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1477 92K 93K 78643K 4197 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 119 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 2K 78643K 297 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 12 41K 93K 78643K 8454 0 sigio 0 0K 0K 78643K 168 0 proc 72 115K 128K 78643K 1362 0 subproc 104 6K 6K 78643K 312 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 448 0 in_multi 99 7K 7K 78643K 329 0 ether_multi 1 0K 0K 78643K 3 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 103 466K 466K 78643K 103 0 exec 0 0K 1K 78643K 2031 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 423 97K 102K 78643K 86003 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 253 0 NDP 12 0K 1K 78643K 150 0 temp 77 5922K 6052K 78643K 88393 0 kqueue 12 18K 26K 78643K 523 0 SYN cache 2 16K 24K 78643K 3 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 120 380 0 377 6 5 1 4 0 8 0 rtentry 112 331 0 218 4 0 4 4 0 8 0 unpcb 144 7482 0 7467 64 60 4 10 0 8 3 syncache 296 49 0 49 12 12 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 197 0 197 8 8 0 1 0 8 0 tcpcb 808 1810 0 1806 61 60 1 8 0 8 0 arp 120 50 0 32 1 0 1 1 0 8 0 inpcb 368 4438 0 4431 86 85 1 14 0 8 0 nd6 136 73 0 46 1 0 1 1 0 8 0 pkpcb 40 10 0 10 3 3 0 1 0 8 0 kcovpl 48 23 0 15 1 0 1 1 0 8 0 ppxss 1256 29 0 29 10 10 0 1 0 8 0 pffrag 232 58 0 56 2 1 1 1 0 482 0 pffrnode 88 58 0 56 2 1 1 1 0 8 0 pffrent 40 375 0 373 2 1 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 24 190 0 182 1 0 1 1 0 8 0 pfstkey 128 190 0 182 2 0 2 2 0 8 0 pfstate 376 190 0 182 5 3 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 1144 0 670 30 0 30 30 0 8 0 art_table 32 1145 0 670 4 0 4 4 0 8 0 art_node 16 281 0 178 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 0 1 0 1 1 0 8 0 semupl 112 6 0 6 1 1 0 1 0 8 0 semapl 112 286 0 276 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 13073 0 11574 94 0 94 94 0 8 0 ffsino 272 13073 0 11574 101 0 101 101 0 8 0 nchpl 144 24867 0 24366 63 39 24 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 87299 0 87298 4 2 2 2 0 8 1 percpumem 16 135 0 92 1 0 1 1 0 8 0 kstatmem 264 208 0 184 2 0 2 2 0 8 0 scxspl 216 80901 0 80898 31 30 1 8 1 8 0 plimitpl 152 791 0 775 1 0 1 1 0 8 0 sigapl 424 8782 0 8736 10 3 7 8 0 8 0 futexpl 64 65478 0 65478 3 2 1 1 0 8 1 knotepl 120 680 0 0 13 0 13 13 0 8 0 kqueuepl 216 1083 0 1075 14 13 1 5 0 8 0 pipepl 320 1683 0 1655 50 42 8 11 0 8 5 fdescpl 496 8729 0 8704 5 1 4 5 0 8 0 filepl 152 56848 0 56610 98 83 15 23 0 8 4 lockfpl 104 2612 0 2610 4 3 1 2 0 8 0 lockfspl 48 815 0 813 1 0 1 1 0 8 0 sessionpl 144 40 0 23 1 0 1 1 0 8 0 pgrppl 48 690 0 673 1 0 1 1 0 8 0 ucredpl 104 9286 0 9274 1 0 1 1 0 8 0 zombiepl 144 9303 0 9301 2 1 1 1 0 8 0 processpl 1072 8782 0 8736 5 0 5 5 0 8 0 procpl 696 24207 0 24145 18 10 8 10 0 8 0 sosppl 168 105 0 105 13 13 0 1 0 8 0 sockpl 488 12375 0 12350 307 295 12 42 0 8 8 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 27 0 0 4 2 2 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 26 0 0 4 1 3 3 0 8 1 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 332 0 0 37 6 31 37 0 8 0 mtagpl 96 199 0 0 5 2 3 5 0 8 0 mbufpl 256 1427 0 0 79 0 79 79 0 8 0 bufpl 288 19918 0 13585 453 0 453 453 0 8 0 anonpl 24 893328 0 879584 147 41 106 115 0 186 3 amapchunkpl 152 269630 0 268807 80 40 40 50 0 158 2 amappl16 200 16940 0 16511 64 38 26 36 0 8 0 amappl15 192 16 0 15 1 0 1 1 0 8 0 amappl14 184 214 0 199 2 1 1 2 0 8 0 amappl13 176 21 0 19 1 0 1 1 0 8 0 amappl12 168 9637 0 9604 3 1 2 2 0 8 0 amappl11 160 116 0 102 1 0 1 1 0 8 0 amappl10 152 58 0 47 1 0 1 1 0 8 0 amappl9 144 236 0 235 1 0 1 1 0 8 0 amappl8 136 617 0 458 7 1 6 6 0 8 0 amappl7 128 117 0 101 2 0 2 2 0 8 0 amappl6 120 451 0 425 2 1 1 2 0 8 0 amappl5 112 337 0 326 1 0 1 1 0 8 0 amappl4 104 813 0 763 3 1 2 3 0 8 0 amappl3 96 53276 0 53209 4 1 3 3 0 8 0 amappl2 88 9289 0 9218 3 1 2 3 0 8 0 amappl1 80 39910 0 39360 23 10 13 23 0 8 0 amappl 88 85125 0 84895 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 8729 0 8703 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8729 0 8703 1 0 1 1 0 8 0 vmmpekpl 168 69287 0 69211 4 0 4 4 0 8 0 vmmpepl 168 534879 0 532537 247 130 117 134 0 357 0 vmsppl 464 8728 0 8703 5 1 4 5 0 8 0 rwobjpl 56 135589 0 127926 116 4 112 112 0 8 0 pdppl 4096 17466 0 17406 348 278 70 84 0 8 10 pvpl 32 2494578 0 2475081 460 248 212 368 0 265 30 pmappl 248 8728 0 8703 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1324 0 446 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82bbeff0) 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+0x29 kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x29 sys/dev/kcov.c:158 __mp_lock(ffffffff82ce9320) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ce9320) at __mp_lock+0x133 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82ce9320,1) 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(ffffffff82cee058,1) at pool_get+0x19d sys/kern/subr_pool.c:589 uvm_mapent_alloc(ffffffff82d85a18,0) at uvm_mapent_alloc+0x2ff sys/uvm/uvm_map.c:1542 uvm_map_clip_start(ffffffff82d85a18,fffffd80655dac88,ffff8000212a4000) at uvm_map_clip_start+0x9b sys/uvm/uvm_map.c:4722 uvm_unmap_remove(ffffffff82d85a18,ffff8000212a4000,ffff8000212aa000,ffff8000211b9580,0,1,3d26203b584d8fae) at uvm_unmap_remove+0x3a1 uvm_unmap(ffffffff82d85a18,ffff8000212a4000,ffff8000212aa000) at uvm_unmap+0x9d vm_map_unlock_ln sys/uvm/uvm_map.c:5379 [inline] uvm_unmap(ffffffff82d85a18,ffff8000212a4000,ffff8000212aa000) at uvm_unmap+0x9d sys/uvm/uvm_map.c:1856 uvm_uarea_free(ffff8000211f3060) at uvm_uarea_free+0x39 sys/uvm/uvm_glue.c:288 reaper(ffff8000211ac008) at reaper+0x168 sys/kern/kern_exit.c:438 end trace frame: 0x0, count: -15 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(ffff800000df6028,9,0) at witness_checkorder+0x13c witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000df6028,9,0) at witness_checkorder+0x13c sys/kern/subr_witness.c:777 rw_enter_write(ffff800000df6018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000df6000) at unveil_delete_names+0x34 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:92 [inline] unveil_delete_names(ffff800000df6000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff800021288448) at unveil_destroy+0xad sys/kern/kern_unveil.c:183 exit1(ffff8000212b1098,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:220 single_thread_check_locked(ffff8000212b1098,0,0) at single_thread_check_locked+0x237 sys/kern/kern_sig.c:2015 userret(ffff8000212b1098) at userret+0x7c single_thread_check sys/kern/kern_sig.c:2054 [inline] userret(ffff8000212b1098) at userret+0x7c sys/kern/kern_sig.c:1970 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x782a5cb11f70, count: -9