witness: lock_object uninitialized: 0xffff8000014b7028 Starting stack trace... witness_checkorder(ffff8000014b7028,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff8000014b7028,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_enter_write(ffff8000014b7018) at rw_enter_write+0x7a sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff8000014b7000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000ffff7678) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000372e3c18,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000372e3c18,ffff80003719ee10,ffff80003719ed60) at sys_exit+0x1a syscall(ffff80003719ee10) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003719ee10) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b0b72f52630, 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(ffff8000014b7028,9,0) at witness_checkorder+0x1b4 rw_enter_write(ffff8000014b7018) at rw_enter_write+0x7a sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff8000014b7000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000ffff7678) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000372e3c18,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000372e3c18,ffff80003719ee10,ffff80003719ed60) at sys_exit+0x1a syscall(ffff80003719ee10) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003719ee10) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b0b72f52630, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003719eae0 rbx 0 rdx 0 rcx 0xffff8000372e3c18 rax 0xffff800029b7bff0 r8 0xffff80003719ea80 r9 0x8080808080808080 r10 0xfa482ce49b03ef03 r11 0x77b5b3c669102ce9 r12 0 r13 0x1 r14 0xffff8000014b7028 r15 0x3 rip 0xffffffff81610e15 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003719ead0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=486097 pid=51068 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000372e3c18 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000372e27d8,0xffff8000371b6548 process=0xffff8000ffff7678 user=0xffff800037199000, vmspace=0xfffffd807eb76000 estcpu=36, cpticks=14, pctcpu=0.4, user=0, sys=8, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 26784 254085 14977 0 2 0x10 syz-executor 26784 205147 14977 0 3 0x4000090 fsleep syz-executor 54902 459550 95437 0 7 0 syz-executor 54902 449091 95437 0 3 0x4000080 fsleep syz-executor 54902 513065 95437 0 3 0x4000080 fsleep syz-executor 54902 290966 95437 0 3 0x4000080 fsleep syz-executor 86621 434468 64398 0 2 0 syz-executor 86621 191675 64398 0 2 0x4000000 syz-executor 86621 331962 64398 0 3 0x4000080 fsleep syz-executor 10624 56461 14555 0 3 0x90 nanoslp syz-executor 10624 193585 14555 0 3 0x4000090 sbwait syz-executor 10624 422446 14555 0 3 0x4000090 fsleep syz-executor 39555 439785 1 0 3 0x82 nanoslp getty 42301 453434 0 0 3 0x14200 acct acct 77164 431523 18491 0 3 0x2 biowait syz-executor 14555 153938 18491 0 3 0x82 nanoslp syz-executor 64398 253782 18491 0 3 0x82 nanoslp syz-executor 16663 468344 0 0 3 0x14280 nfsidl nfsio 98273 471113 0 0 3 0x14280 nfsidl nfsio 18532 331764 0 0 3 0x14280 nfsidl nfsio 27042 369450 0 0 3 0x14280 nfsidl nfsio 30167 306240 0 0 3 0x14280 nfsidl nfsio 34325 177414 0 0 3 0x14280 nfsidl nfsio 71711 443328 0 0 3 0x14280 nfsidl nfsio 61121 213045 0 0 3 0x14280 nfsidl nfsio 50200 517201 0 0 3 0x14280 nfsidl nfsio 41726 91460 0 0 3 0x14280 nfsidl nfsio 17778 242476 0 0 3 0x14280 nfsidl nfsio 86025 11290 0 0 3 0x14280 nfsidl nfsio 33707 369774 0 0 3 0x14280 nfsidl nfsio 91825 116063 0 0 3 0x14280 nfsidl nfsio 42408 339182 0 0 3 0x14280 nfsidl nfsio 37548 230045 0 0 3 0x14280 nfsidl nfsio 14720 278287 0 0 3 0x14280 nfsidl nfsio 24102 1112 0 0 3 0x14280 nfsidl nfsio 65156 151084 0 0 3 0x14280 nfsidl nfsio 97550 487936 0 0 3 0x14280 nfsidl nfsio 78996 440904 0 0 3 0x14200 bored sosplice 37420 456010 18491 0 3 0x82 nanoslp syz-executor 55144 471688 18491 0 3 0x82 wait syz-executor 14977 109415 18491 0 3 0x82 nanoslp syz-executor 3711 320468 18491 0 3 0x82 nanoslp syz-executor 95437 413149 18491 0 3 0x82 nanoslp syz-executor 18491 105753 38110 0 3 0x82 kqread syz-executor 38110 138233 43671 0 3 0x10008a sigsusp ksh 43671 241965 37176 0 3 0x98 kqread sshd-session 37176 312341 80618 0 3 0x92 kqread sshd-session 80618 262113 1 0 3 0x88 kqread sshd 80383 182395 58205 74 3 0x1100092 bpf pflogd 58205 353778 1 0 3 0x80 sbwait pflogd 81084 234356 55946 73 3 0x1100090 kqread syslogd 55946 364618 1 0 3 0x100082 sbwait syslogd 27917 313887 1 0 3 0x100080 kqread resolvd 35446 49315 559 77 3 0x100092 kqread dhcpleased 21498 242460 559 77 3 0x100092 kqread dhcpleased 559 423707 1 0 3 0x80 kqread dhcpleased 71542 35482 0 0 3 0x14200 bored smr 12010 154937 0 0 2 0x14200 zerothread 61023 421138 0 0 3 0x14200 aiodoned aiodoned 44926 458328 0 0 3 0x14200 syncer update 79126 88466 0 0 3 0x14200 cleaner cleaner 8631 111312 0 0 3 0x14200 reaper reaper 2752 55256 0 0 3 0x14200 pgdaemon pagedaemon 10286 235125 0 0 3 0x14200 bored viomb 95104 64336 0 0 3 0x40014200 acpi0 acpi0 77648 464137 0 0 3 0x40014200 idle1 5647 384227 0 0 3 0x14200 bored softnet3 34198 503867 0 0 3 0x14200 bored softnet2 23578 456436 0 0 3 0x14200 bored softnet1 45058 172728 0 0 3 0x14200 bored softnet0 20027 361009 0 0 3 0x14200 bored systqmp 73620 261383 0 0 3 0x14200 bored systq 48607 45091 0 0 3 0x14200 tmoslp softclockmp 435 500936 0 0 3 0x40014200 tmoslp softclock 85744 417876 0 0 3 0x40014200 idle0 1 502158 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 54902 (syz-executor) thread 0xffff800029fe6f60 (459550) exclusive rwlock vmmaplk r = 0 (0xfffffd806bccf2e0) #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_map_protect+0xe1 sys/uvm/uvm_map.c:3057 #3 sys_mprotect+0x34c sys/uvm/uvm_mmap.c:585 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 Process 10624 (syz-executor) thread 0xffff8000371b67c0 (193585) exclusive rwlock sbufrcv r = 0 (0xffff800010fce908) #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 sblock+0xb7 sys/kern/uipc_socket2.c:549 #3 soreceive+0x295 sys/kern/uipc_socket.c:945 #4 recvit+0x40a sys/kern/uipc_syscalls.c:1079 #5 sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:970 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 77164 (syz-executor) thread 0xffff8000371b6f58 (431523) exclusive rrwlock inode r = 0 (0xfffffd806deb31b8) #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 (0xfffffd806e10cb48) #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 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10237 11334K 11829K 166960K 16102 0 pcb 19 16K 18K 166960K 876 0 rtable 218 7K 8K 166960K 978 0 pf 36 18K 22K 166960K 207 0 ifaddr 36 6K 7K 166960K 111 0 ifgroup 51 2K 2K 166960K 185 0 sysctl 4 1K 3K 166960K 5 0 counters 62 36K 36K 166960K 148 0 ioctlops 0 0K 4K 166960K 1793 0 iov 1 4K 28K 166960K 257 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1573 99K 100K 166960K 4171 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 20K 28K 166960K 45 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 199 0 dirhash 12 2K 3K 166960K 75 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 16 57K 93K 166960K 2640 0 sigio 0 0K 0K 166960K 46 0 proc 78 139K 139K 166960K 936 0 subproc 104 6K 6K 166960K 156 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 517 0 in_multi 76 5K 7K 166960K 224 0 ether_multi 1 0K 0K 166960K 18 0 mrt 1 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 879 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 1K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 265 74K 88K 166960K 27115 0 UVM aobj 19 4K 4K 166960K 20 0 pinsyscall 42 84K 104K 166960K 3908 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 1K 166960K 166 0 NDP 11 0K 2K 166960K 84 0 temp 79 6828K 6940K 166960K 122207 0 kqueue 13 20K 29K 166960K 446 0 SYN cache 2 16K 16K 166960K 2 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 120 217 0 212 1 0 1 1 0 8 0 rtentry 112 288 0 191 4 0 4 4 0 8 0 unpcb 144 2139 0 2119 21 15 6 6 0 8 5 syncache 336 19 0 19 5 5 0 1 0 8 0 tcpqe 32 4 0 4 3 3 0 1 0 8 0 tcpcb 808 1008 0 1002 17 15 2 8 0 8 1 arp 120 38 0 19 1 0 1 1 0 8 0 inpcb 336 3430 0 3415 30 23 7 9 0 8 5 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 55 0 29 2 0 2 2 0 8 0 pkpcb 40 44 0 44 6 5 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1168 24 0 24 6 5 1 1 0 8 1 pfstscr 40 11 0 10 2 1 1 1 0 8 0 pffrag 232 46 0 42 1 0 1 1 0 482 0 pffrnode 88 46 0 42 1 0 1 1 0 8 0 pffrent 40 220 0 216 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 pfanchor 1288 4 0 3 4 3 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 173 0 104 1 0 1 1 0 8 0 pfstkey 128 195 0 125 3 0 3 3 0 8 0 pfstate 376 181 0 114 8 0 8 8 0 8 0 pfrule 1344 97 0 26 7 1 6 7 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 934 0 511 38 8 30 31 0 8 0 art_table 32 937 0 511 4 0 4 4 0 8 0 art_node 16 216 0 129 1 0 1 1 0 8 0 semupl 112 3 0 3 3 3 0 1 0 8 0 semapl 112 194 0 184 1 0 1 1 0 8 0 shmpl 112 17 0 1 1 0 1 1 0 8 0 dirhash 1024 60 0 43 3 0 3 3 0 8 0 dino2pl 256 6245 0 4739 95 0 95 95 0 8 0 ffsino 272 6245 0 4739 101 0 101 101 0 8 0 nchpl 144 9990 0 8288 64 0 64 64 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 37248 0 37248 5 4 1 2 0 8 1 percpumem 16 88 0 43 1 0 1 1 0 8 0 kstatmem 264 108 0 86 2 0 2 2 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 9 0 9 6 5 1 1 0 8 1 scxspl 216 30016 0 30015 20 19 1 8 1 8 0 plimitpl 152 784 0 767 1 0 1 1 0 8 0 sigapl 424 2999 0 2928 9 0 9 9 0 8 0 futexpl 64 45143 0 45137 1 0 1 1 0 8 0 knotepl 120 791 0 0 24 0 24 24 0 8 0 kqueuepl 216 973 0 963 9 8 1 5 0 8 0 pipepl 320 608 0 580 11 8 3 8 0 8 0 fdescpl 496 2932 0 2902 5 0 5 5 0 8 0 filepl 152 22541 0 22282 33 15 18 18 0 8 2 lockfpl 104 1200 0 1198 3 1 2 2 0 8 1 lockfspl 48 529 0 527 1 0 1 1 0 8 0 sessionpl 144 44 0 36 1 0 1 1 0 8 0 pgrppl 48 156 0 140 1 0 1 1 0 8 0 ucredpl 104 4140 0 4125 1 0 1 1 0 8 0 zombiepl 144 3832 0 3829 1 0 1 1 0 8 0 processpl 1160 2999 0 2928 6 0 6 6 0 8 0 procpl 648 7238 0 7159 9 1 8 9 0 8 0 srpgc 96 10 0 10 3 3 0 1 0 8 0 sosppl 168 25 0 25 6 5 1 1 0 8 1 sockpl 664 5873 0 5834 45 30 15 15 0 8 9 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 143 0 0 18 1 17 18 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 34 0 0 4 0 4 4 0 8 0 mtagpl 96 58 0 0 2 0 2 2 0 8 0 mbufpl 256 452 0 0 27 0 27 27 0 8 0 bufpl 280 8197 0 2023 442 0 442 442 0 8 0 anonpl 24 427906 0 418120 155 71 84 85 0 185 0 amapchunkpl 152 88935 0 88237 54 21 33 33 0 158 4 amappl16 200 10230 0 9940 81 53 28 29 0 8 0 amappl15 192 14 0 14 1 1 0 1 0 8 0 amappl14 184 163 0 151 1 0 1 1 0 8 0 amappl13 176 10 0 9 2 1 1 1 0 8 0 amappl12 168 3657 0 3626 4 2 2 3 0 8 0 amappl11 160 116 0 102 1 0 1 1 0 8 0 amappl10 152 51 0 51 2 2 0 1 0 8 0 amappl9 144 152 0 152 1 1 0 1 0 8 0 amappl8 136 51 0 48 1 0 1 1 0 8 0 amappl7 128 136 0 123 1 0 1 1 0 8 0 amappl6 120 207 0 205 1 0 1 1 0 8 0 amappl5 112 165 0 152 1 0 1 1 0 8 0 amappl4 104 395 0 375 1 0 1 1 0 8 0 amappl3 96 16392 0 16279 4 0 4 4 0 8 0 amappl2 88 3383 0 3298 3 0 3 3 0 8 0 amappl1 80 19438 0 18870 16 0 16 16 0 8 0 amappl 88 26395 0 26193 5 0 5 5 0 92 0 dma65536 65536 2 0 2 1 1 0 1 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma4096 4096 3 0 3 2 2 0 1 0 8 0 dma1024 1024 2 0 1 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 7 0 7 2 2 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 19 0 1 1 0 1 1 0 8 0 uaddrrnd 24 2932 0 2901 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2932 0 2901 1 0 1 1 0 8 0 vmmpekpl 168 25323 0 25269 3 0 3 3 0 8 0 vmmpepl 168 188718 0 186534 154 42 112 113 0 357 6 vmsppl 448 2931 0 2901 6 2 4 5 0 8 0 rwobjpl 56 57375 0 50186 107 2 105 106 0 8 0 pdppl 4096 5871 0 5802 138 66 72 85 0 8 3 pvpl 32 21715 0 0 177 2 175 175 0 265 0 pmappl 248 2931 0 2901 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 505 0 134 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8349fff0) 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 __mp_lock(ffffffff8359d330) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8359d330) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff800035191ee0,ffff800000079e00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f __mp_lock(ffffffff8359d330) at __mp_lock+0x19e __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8359d330) at __mp_lock+0x19e sys/kern/kern_lock.c:144 intr_handler(ffff800035192040,ffff800000079f80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x35 sys/dev/kcov.c:230 witness_assert(fffffd806bccf2e0,4) at witness_assert+0x43d sys/kern/subr_witness.c:2040 rw_exit(fffffd806bccf2d0) at rw_exit+0x9a sys/kern/kern_rwlock.c:328 uvm_map_protect(fffffd806bccf1e8,b035171e000,b035191e000,3,0,0,9e24998f07545ca) at uvm_map_protect+0xf5e vm_map_unlock_ln sys/uvm/uvm_map.c:5298 [inline] uvm_map_protect(fffffd806bccf1e8,b035171e000,b035191e000,3,0,0,9e24998f07545ca) at uvm_map_protect+0xf5e sys/uvm/uvm_map.c:3222 sys_mprotect(ffff800029fe6f60,ffff8000351923d0,ffff800035192320) at sys_mprotect+0x34c sys/uvm/uvm_mmap.c:585 syscall(ffff8000351923d0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000351923d0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7bb7f1d0d3a0, 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(ffff8000014b7028,9,0) at witness_checkorder+0x1b4 rw_enter_write(ffff8000014b7018) at rw_enter_write+0x7a sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff8000014b7000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000ffff7678) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000372e3c18,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000372e3c18,ffff80003719ee10,ffff80003719ed60) at sys_exit+0x1a syscall(ffff80003719ee10) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003719ee10) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b0b72f52630, count: -9