witness: lock_object uninitialized: 0xffff8000012da028 Starting stack trace... witness_checkorder(ffff8000012da028,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff8000012da028,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_enter_write(ffff8000012da018) at rw_enter_write+0x7a sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff8000012da000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000ffffb1e8) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff800037286040,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff800037286040,ffff8000371debb0,ffff8000371deb00) at sys_exit+0x1a syscall(ffff8000371debb0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371debb0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71294361dd20, count: 249 End of stack trace. Stopped at db_enter+0x25: 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+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000012da028,9,0) at witness_checkorder+0x1b4 rw_enter_write(ffff8000012da018) at rw_enter_write+0x7a sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff8000012da000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000ffffb1e8) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff800037286040,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff800037286040,ffff8000371debb0,ffff8000371deb00) at sys_exit+0x1a syscall(ffff8000371debb0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371debb0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71294361dd20, count: -9 ddb{1}> show registers rdi 0 rsi 0x4000000000000000 rbp 0xffff8000371de880 rbx 0 rdx 0 rcx 0xffff800037286040 rax 0xffff800029b7bff0 r8 0xffff8000371de820 r9 0x8080808080808080 r10 0xffff8000371de770 r11 0x2aefe3f36886ea40 r12 0 r13 0x1 r14 0xffff8000012da028 r15 0x3 rip 0xffffffff81ac00e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000371de870 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=371094 pid=93090 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800037286040 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a05ccf0,0xffff8000372862d8 process=0xffff8000ffffb1e8 user=0xffff8000371d9000, vmspace=0xfffffd8070cfeab0 estcpu=36, cpticks=16, pctcpu=0.0, user=0, sys=9, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 58051 95752 99310 0 7 0x2 syz-executor 4596 487569 63469 0 2 0 syz-executor 4596 225406 63469 0 2 0x4000000 syz-executor 67404 272263 99310 0 3 0x82 piperd syz-executor 63469 121439 99310 0 3 0x82 nanoslp syz-executor 19605 34603 99310 0 3 0x2 biowait syz-executor 95508 78650 99310 0 3 0x82 nanoslp syz-executor 23928 196473 99310 0 3 0x82 piperd syz-executor 65884 94345 0 0 3 0x14280 nfsidl nfsio 24411 245426 0 0 3 0x14280 nfsidl nfsio 66866 324207 0 0 3 0x14280 nfsidl nfsio 20733 369025 0 0 3 0x14280 nfsidl nfsio 29519 233428 0 0 3 0x14280 nfsidl nfsio 72380 464469 0 0 3 0x14280 nfsidl nfsio 56924 362781 0 0 3 0x14280 nfsidl nfsio 81261 135698 0 0 3 0x14280 nfsidl nfsio 46914 431279 0 0 3 0x14280 nfsidl nfsio 92214 443367 0 0 3 0x14280 nfsidl nfsio 82047 333010 0 0 3 0x14280 nfsidl nfsio 37136 118108 0 0 3 0x14280 nfsidl nfsio 26515 15201 0 0 3 0x14280 nfsidl nfsio 60776 185743 0 0 3 0x14280 nfsidl nfsio 37367 107345 1 0 3 0x100083 ttyin getty 64917 465770 0 0 3 0x14200 bored sosplice 39874 139871 99310 0 3 0x82 piperd syz-executor 99310 365196 59652 0 2 0x2 syz-executor 59652 28814 70780 0 3 0x10008a sigsusp ksh 70780 347770 65692 0 3 0x98 kqread sshd-session 65692 294510 36968 0 3 0x92 kqread sshd-session 36968 150355 1 0 3 0x88 kqread sshd 31106 211018 81204 74 3 0x1100092 bpf pflogd 81204 163545 1 0 3 0x80 sbwait pflogd 75522 370691 87803 73 3 0x1100090 kqread syslogd 87803 329941 1 0 3 0x100082 sbwait syslogd 54482 108856 1 0 3 0x100080 kqread resolvd 6903 468217 16170 77 3 0x100092 kqread dhcpleased 15092 299027 16170 77 3 0x100092 kqread dhcpleased 16170 499412 1 0 3 0x80 kqread dhcpleased 47426 168492 0 0 3 0x14200 bored smr 70944 188360 0 0 2 0x14200 zerothread 25688 218004 0 0 3 0x14200 aiodoned aiodoned 51544 504167 0 0 3 0x14200 syncer update 23870 231799 0 0 3 0x14200 cleaner cleaner 4286 398993 0 0 2 0x14200 reaper 26283 112021 0 0 3 0x14200 pgdaemon pagedaemon 20096 159564 0 0 3 0x14200 bored viomb 27038 106612 0 0 3 0x40014200 acpi0 acpi0 67089 20561 0 0 3 0x40014200 idle1 27091 54343 0 0 3 0x14200 bored softnet3 19064 345095 0 0 3 0x14200 bored softnet2 14515 498923 0 0 3 0x14200 bored softnet1 5202 15321 0 0 3 0x14200 bored softnet0 14220 522954 0 0 3 0x14200 bored systqmp 85545 293072 0 0 3 0x14200 bored systq 34724 467881 0 0 3 0x14200 tmoslp softclockmp 13407 492941 0 0 3 0x40014200 tmoslp softclock 18222 293331 0 0 3 0x40014200 idle0 1 223316 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 4596 (syz-executor) thread 0xffff80002a0582a0 (225406) exclusive rrwlock inode r = 0 (0xfffffd806f19f708) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:678 #6 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x218 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 vn_open+0x13f sys/kern/vfs_vnops.c:140 #12 doopenat+0x31d sys/kern/vfs_syscalls.c:1123 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 Process 19605 (syz-executor) thread 0xffff80002a05cf78 (34603) exclusive rrwlock inode r = 0 (0xfffffd806c2bd818) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:678 #6 ufs_ihashget+0x192 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c2bd3d8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:678 #6 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x218 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 Process 4286 (reaper) thread 0xffff800029fd91c0 (398993) exclusive rwlock kmmaplk r = 0 (0xffffffff83641100) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5255 #2 uvm_unmap+0x81 sys/uvm/uvm_map.c:1792 #3 km_free+0x87 sys/uvm/uvm_km.c:833 #4 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:284 #5 reaper+0x1fe sys/kern/kern_exit.c:466 #6 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10218 11460K 11893K 166960K 16998 0 pcb 17 22K 24K 166960K 442 0 rtable 192 7K 8K 166960K 1052 0 pf 41 19K 27K 166960K 198 0 ifaddr 38 6K 7K 166960K 114 0 ifgroup 55 2K 2K 166960K 177 0 sysctl 3 0K 1K 166960K 8 0 counters 64 36K 37K 166960K 132 0 ioctlops 0 0K 8K 166960K 1879 0 iov 0 0K 16K 166960K 212 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1496 94K 94K 166960K 4291 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 27 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 77 0 dirhash 12 2K 2K 166960K 45 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 10 30K 93K 166960K 2795 0 sigio 0 0K 0K 166960K 49 0 proc 76 115K 128K 166960K 973 0 subproc 78 4K 7K 166960K 443 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 523 0 in_multi 77 5K 7K 166960K 241 0 ether_multi 1 0K 0K 166960K 6 0 mrt 0 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 833 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 67 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 191 56K 91K 166960K 27229 0 UVM aobj 48 6K 6K 166960K 53 0 pinsyscall 36 72K 106K 166960K 4110 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 132 0 NDP 14 0K 1K 166960K 80 0 temp 69 6827K 6946K 166960K 92050 0 kqueue 13 20K 28K 166960K 297 0 SYN cache 2 10K 18K 166960K 3 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 324 0 321 6 5 1 3 0 8 0 rtentry 112 334 0 251 4 0 4 4 0 8 0 unpcb 144 1692 0 1675 20 16 4 9 0 8 3 syncache 336 17 0 17 5 5 0 1 0 8 0 tcpqe 32 8 0 8 4 4 0 1 0 8 0 tcpcb 808 978 0 974 24 22 2 11 0 8 1 arp 120 75 0 59 1 0 1 1 0 8 0 inpcb 336 2832 0 2820 29 26 3 10 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 136 51 0 32 1 0 1 1 0 8 0 pkpcb 40 41 0 41 5 5 0 1 0 8 0 kcovpl 48 34 0 28 1 0 1 1 0 8 0 ppxss 1168 13 0 13 6 6 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 12 0 11 2 1 1 1 0 482 0 pffrnode 88 12 0 11 2 1 1 1 0 8 0 pffrent 40 53 0 52 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 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pfanchor 1288 4 0 1 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 125 0 105 1 0 1 1 0 8 0 pfstkey 128 130 0 111 2 0 2 2 0 8 0 pfstate 376 126 0 108 6 1 5 6 0 8 0 pfrule 1344 35 0 25 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1037 0 705 29 8 21 29 0 8 0 art_table 32 1040 0 705 4 0 4 4 0 8 0 art_node 16 329 0 256 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 13 1 0 1 1 0 8 0 semapl 112 72 0 62 1 0 1 1 0 8 0 shmpl 112 50 0 5 2 0 2 2 0 8 0 dirhash 1024 39 0 22 3 0 3 3 0 8 0 dino2pl 256 5911 0 4382 96 0 96 96 0 8 0 ffsino 272 5911 0 4382 102 0 102 102 0 8 0 nchpl 144 9412 0 7710 64 0 64 64 0 8 0 uvmvnodes 80 8135 0 0 167 0 167 167 0 8 0 vnodes 216 8135 0 0 452 0 452 452 0 8 0 namei 1024 32752 0 32752 4 3 1 2 0 8 1 percpumem 16 80 0 34 1 0 1 1 0 8 0 kstatmem 264 92 0 68 4 2 2 3 0 8 0 scsiplug 72 10 0 10 7 7 0 1 0 8 0 scxspl 216 27799 0 27798 15 14 1 8 1 8 0 plimitpl 152 443 0 427 1 0 1 1 0 8 0 sigapl 424 3097 0 3038 11 3 8 9 0 8 0 futexpl 64 35940 0 35940 2 1 1 1 0 8 1 knotepl 120 577 0 0 18 0 18 18 0 8 0 kqueuepl 216 690 0 681 11 10 1 5 0 8 0 pipepl 320 478 0 448 11 8 3 8 0 8 0 fdescpl 496 3042 0 3018 6 1 5 5 0 8 0 filepl 152 19041 0 18828 44 32 12 20 0 8 2 lockfpl 104 897 0 895 2 1 1 2 0 8 0 lockfspl 48 333 0 331 1 0 1 1 0 8 0 sessionpl 144 63 0 54 1 0 1 1 0 8 0 pgrppl 48 196 0 179 1 0 1 1 0 8 0 ucredpl 104 2800 0 2786 1 0 1 1 0 8 0 zombiepl 144 3708 0 3706 3 2 1 1 0 8 0 processpl 1160 3097 0 3038 7 2 5 6 0 8 0 procpl 648 7070 0 7008 10 3 7 8 0 8 0 srpgc 96 4 0 4 2 2 0 1 0 8 0 sosppl 168 15 0 15 3 3 0 1 0 8 0 sockpl 664 4924 0 4893 61 52 9 25 0 8 4 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 139 0 0 17 0 17 17 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 34 0 0 4 0 4 4 0 8 0 mtagpl 96 141 0 0 4 0 4 4 0 8 0 mbufpl 256 1427 0 0 85 0 85 85 0 8 0 bufpl 280 7029 0 855 442 0 442 442 0 8 0 anonpl 24 425754 0 416593 153 47 106 106 0 185 0 amapchunkpl 152 89120 0 88676 60 33 27 34 0 158 3 amappl16 200 10003 0 9713 73 34 39 40 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 161 0 149 1 0 1 1 0 8 0 amappl13 176 11 0 11 2 2 0 1 0 8 0 amappl12 168 3820 0 3796 3 1 2 2 0 8 0 amappl11 160 60 0 46 1 0 1 1 0 8 0 amappl10 152 12 0 11 1 0 1 1 0 8 0 amappl9 144 129 0 129 1 1 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 139 0 127 1 0 1 1 0 8 0 amappl6 120 227 0 225 1 0 1 1 0 8 0 amappl5 112 181 0 169 1 0 1 1 0 8 0 amappl4 104 397 0 378 1 0 1 1 0 8 0 amappl3 96 16530 0 16463 3 0 3 3 0 8 0 amappl2 88 3494 0 3415 3 0 3 3 0 8 0 amappl1 80 19483 0 18942 17 3 14 15 0 8 0 amappl 88 26550 0 26419 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma16384 16384 65 0 65 1 1 0 1 0 8 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 128 254 0 254 2 2 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 22 0 21 1 0 1 1 0 8 0 aobjpl 72 52 0 5 1 0 1 1 0 8 0 uaddrrnd 24 3042 0 3017 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3042 0 3017 1 0 1 1 0 8 0 vmmpekpl 168 25567 0 25509 4 0 4 4 0 8 0 vmmpepl 168 200882 0 199075 140 30 110 113 0 357 0 vmsppl 448 3041 0 3017 7 3 4 5 0 8 0 rwobjpl 56 59344 0 50032 136 2 134 134 0 8 0 pdppl 4096 6091 0 6034 176 109 67 85 0 8 10 pvpl 32 24718 0 0 200 1 199 199 0 265 0 pmappl 248 3041 0 3017 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 601 0 186 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff834f2ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff835a0960) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a0960) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff800037279890,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff835a0960) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a0960) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff8000372799f0,ffff800000079e00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f __mp_lock(ffffffff835a0960) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a0960) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff800037279b50,ffff800000079f80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff835a0960) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a0960) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff800037279d20) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037279d20) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f162a04fe20, count: -16 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000012da028,9,0) at witness_checkorder+0x1b4 rw_enter_write(ffff8000012da018) at rw_enter_write+0x7a sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff8000012da000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000ffffb1e8) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff800037286040,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff800037286040,ffff8000371debb0,ffff8000371deb00) at sys_exit+0x1a syscall(ffff8000371debb0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000371debb0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71294361dd20, count: -9