witness: lock_object uninitialized: 0xffff8000015e0030 Starting stack trace... witness_checkorder(ffff8000015e0030,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff8000015e0030,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_do_enter_write(ffff8000015e0018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015e0000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c505240) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002a3762b0,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit( ffff80002a3762b0,ffff80002a44bf80,ffff80002a44bed0) at sys_exit+0x1a syscall(ffff80002a44bf80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a44bf80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7313f33651d0, count: 249 End of stack trace. Stopped at db_enter+0x25: 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+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000015e0030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000015e0018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015e0000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c505240) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002a3762b0,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80002a3762b0,ffff80002a44bf80,ffff80002a44bed0) at sys_exit+0x1a syscall(ffff80002a44bf80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a44bf80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7313f33651d0, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a44bc10 rbx 0 rdx 0 rcx 0xffff80002a3762b0 rax 0xffffffff83791ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80002a44bbb0 r9 0x8080808080808080 r10 0x58b2d8d1567661cf r11 0x97f05f3d99ead312 r12 0 r13 0x1 r14 0xffff8000015e0030 r15 0x3 rip 0xffffffff82edcdb5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a44bc00 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=365238 pid=54194 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a3762b0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c4f7218,0xffff80002a3b8d18 process=0xffff80003c505240 user=0xffff80002a447000, vmspace=0xfffffd806a5d71e8 estcpu=36, cpticks=9, pctcpu=0.5, user=0, sys=8, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 72919 59185 40350 0 7 0 syz-executor 72919 336498 40350 0 2 0x4000080 syz-executor 72919 298309 40350 0 2 0x4000000 syz-executor 91498 414073 2260 0 2 0 syz-executor 91498 159635 2260 0 3 0x4000080 netcon syz-executor 73521 240847 57511 0 2 0x480 syz-executor 73521 257172 57511 0 3 0x4000080 kqread syz-executor 17316 483167 9393 0 2 0x480 syz-executor 17316 77151 9393 0 3 0x4000080 netcon syz-executor 17316 75645 9393 0 3 0x4000080 fsleep syz-executor 9393 316842 71855 0 2 0x482 syz-executor 40350 243993 71855 0 2 0x482 syz-executor 2490 93158 71855 0 2 0x482 syz-executor 33563 144797 1 0 2 0x100083 getty 95931 437385 85575 0 3 0x82 sbwait sshd-session 2260 333440 71855 0 2 0x482 syz-executor 57511 245020 71855 0 2 0x482 syz-executor 91128 250124 71855 0 3 0x82 piperd syz-executor 48035 186030 0 0 3 0x14280 nfsidl nfsio 251 264632 0 0 3 0x14280 nfsidl nfsio 948 234811 0 0 3 0x14280 nfsidl nfsio 58666 504727 0 0 3 0x14280 nfsidl nfsio 76980 1173 0 0 3 0x14280 nfsidl nfsio 43644 245944 0 0 3 0x14280 nfsidl nfsio 3084 492359 0 0 3 0x14280 nfsidl nfsio 42681 282611 0 0 3 0x14280 nfsidl nfsio 61231 262590 0 0 3 0x14280 nfsidl nfsio 93119 228921 0 0 3 0x14280 nfsidl nfsio 7520 501570 0 0 3 0x14280 nfsidl nfsio 27173 278709 0 0 3 0x14280 nfsidl nfsio 12210 453894 0 0 3 0x14280 nfsidl nfsio 31097 348609 0 0 3 0x14280 nfsidl nfsio 96311 50016 0 0 3 0x14280 nfsidl nfsio 1765 152171 0 0 3 0x14280 nfsidl nfsio 24945 64425 0 0 3 0x14280 nfsidl nfsio 96749 441212 0 0 3 0x14280 nfsidl nfsio 55343 135182 0 0 3 0x14280 nfsidl nfsio 36372 309258 0 0 3 0x14280 nfsidl nfsio 96565 141938 0 0 3 0x14200 bored sosplice 49772 412666 77064 0 3 0x100082 sbwait arp 77064 377134 1 0 3 0x10008a sigsusp sh 68841 391589 71855 0 3 0x82 wait syz-executor 78280 245430 71855 0 2 0x482 syz-executor 71855 204808 4702 0 2 0x3 syz-executor 4702 501662 7575 0 3 0x10008a sigsusp ksh 7575 252188 51545 0 3 0x98 kqread sshd-session 51545 112219 85575 0 3 0x92 kqread sshd-session 85575 271161 1 0 3 0x88 kqread sshd 81982 506962 79116 74 3 0x1100092 bpf pflogd 79116 356466 1 0 3 0x80 sbwait pflogd 41930 279488 71796 73 2 0x1100090 syslogd 71796 37284 1 0 3 0x100082 sbwait syslogd 61765 389481 1 0 3 0x100080 kqread resolvd 42176 27163 77627 77 3 0x100092 kqread dhcpleased 20626 290763 77627 77 3 0x100092 kqread dhcpleased 77627 133535 1 0 3 0x80 kqread dhcpleased 8022 263938 0 0 3 0x14200 bored smr 15280 144601 0 0 2 0x14200 zerothread 88800 1581 0 0 3 0x14200 aiodoned aiodoned 90685 27904 0 0 3 0x14200 syncer update 14161 322308 0 0 3 0x14200 cleaner cleaner 89303 354904 0 0 2 0x14200 reaper 45298 24878 0 0 3 0x14200 pgdaemon pagedaemon 68036 78782 0 0 3 0x14200 bored viomb 30631 315095 0 0 3 0x40014200 acpi0 acpi0 13292 14248 0 0 3 0x40014200 idle1 38122 175078 0 0 3 0x14200 bored softnet3 21678 356163 0 0 3 0x14200 bored softnet2 56923 110302 0 0 3 0x14200 bored softnet1 98530 148901 0 0 2 0x14200 softnet0 73222 433775 0 0 3 0x14200 bored systqmp 16838 124932 0 0 3 0x14200 bored systq 8313 192415 0 0 3 0x14200 tmoslp softclockmp 68429 467989 0 0 2 0x40014200 softclock 68378 26012 0 0 3 0x40014200 idle0 1 83530 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 89303 (reaper) thread 0xffff8000ffffc008 (354904) exclusive rwlock kmmaplk r = 0 (0xffffffff839bebf8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5250 #3 uvm_unmap+0x81 sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:833 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:284 #6 reaper+0x1fe sys/kern/kern_exit.c:466 #7 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10241 11061K 11505K 166960K 16883 0 pcb 19 16K 18K 166960K 1122 0 rtable 188 12K 13K 166960K 919 0 pf 39 18K 23K 166960K 313 0 ifaddr 39 7K 8K 166960K 216 0 ifgroup 59 2K 3K 166960K 399 0 sysctl 4 1K 2K 166960K 9 0 counters 66 36K 37K 166960K 454 0 ioctlops 0 0K 4K 166960K 2012 0 iov 0 0K 28K 166960K 402 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1392 87K 88K 166960K 4719 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 78 0 VM map 2 1K 1K 166960K 2 0 sem 22 56K 84K 166960K 184 0 dirhash 12 2K 2K 166960K 78 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 3932 0 sigio 0 0K 0K 166960K 88 0 proc 78 115K 128K 166960K 1184 0 subproc 81 5K 5K 166960K 181 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 664 0 in_multi 68 5K 7K 166960K 349 0 ether_multi 1 0K 0K 166960K 24 0 mrt 1 0K 0K 166960K 13 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 1144 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 8 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 263 83K 92K 166960K 39188 0 UVM aobj 131 14K 14K 166960K 149 0 pinsyscall 47 94K 106K 166960K 5306 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 263 0 NDP 15 0K 1K 166960K 156 0 temp 82 8644K 8900K 166960K 179077 0 kqueue 14 22K 30K 166960K 647 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 120 382 0 378 4 1 3 3 0 8 2 rtentry 112 279 0 203 4 0 4 4 0 8 0 unpcb 144 2454 0 2437 11 9 2 4 0 8 1 syncache 336 15 0 15 6 6 0 1 0 8 0 tcpqe 32 5 0 5 2 2 0 1 0 8 0 tcpcb 808 1503 0 1494 44 39 5 11 0 8 4 arp 120 48 0 32 1 0 1 1 0 8 0 inpcb 376 4863 0 4848 83 74 9 15 0 8 6 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 60 0 41 1 0 1 1 0 8 0 pkpcb 40 66 0 66 6 5 1 1 0 8 1 kcovpl 48 20 0 11 1 0 1 1 0 8 0 ppxss 1168 143 0 143 4 3 1 1 0 8 1 pppxif 1472 83 0 83 8 8 0 1 0 8 0 pffrag 232 60 0 52 1 0 1 1 0 482 0 pffrnode 88 56 0 49 1 0 1 1 0 8 0 pffrent 40 127 0 119 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 pfrktable 1344 3 0 2 1 0 1 1 0 8 0 pftag 88 3 0 2 2 1 1 1 0 8 0 pfstitem 24 268 0 157 1 0 1 1 0 8 0 pfstkey 128 268 0 157 4 0 4 4 0 8 0 pfstate 376 267 0 157 12 1 11 11 0 8 0 pfrule 1344 33 0 25 2 1 1 2 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 1225 0 896 33 8 25 31 0 8 1 art_table 32 1229 0 896 5 0 5 5 0 8 0 art_node 16 269 0 205 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 10 1 0 1 1 0 8 0 semupl 112 6 0 6 4 4 0 1 0 8 0 semapl 112 177 0 157 1 0 1 1 0 8 0 shmpl 112 146 0 18 4 0 4 4 0 8 0 dirhash 1024 61 0 44 3 0 3 3 0 8 0 dino2pl 256 8665 0 7147 96 0 96 96 0 8 0 ffsino 280 8665 0 7147 110 0 110 110 0 8 0 nchpl 144 14250 0 13684 64 40 24 63 0 8 0 rtmask 32 5 0 5 3 3 0 1 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 50677 0 50677 10 9 1 5 0 8 1 percpumem 16 241 0 194 1 0 1 1 0 8 0 kstatmem 264 232 0 206 4 2 2 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 15 0 15 8 7 1 1 0 8 1 scxspl 216 41124 0 41124 25 22 3 8 1 8 3 plimitpl 152 1091 0 1072 1 0 1 1 0 8 0 sigapl 424 4254 0 4181 10 1 9 9 0 8 0 futexpl 64 56072 0 56071 1 0 1 1 0 8 0 knotepl 120 825 0 0 23 0 23 23 0 8 0 kqueuepl 216 1470 0 1460 17 14 3 5 0 8 2 pipepl 328 690 0 659 11 8 3 8 0 8 0 fdescpl 504 4203 0 4170 5 0 5 5 0 8 0 filepl 152 29821 0 29581 39 23 16 18 0 8 2 lockfpl 104 1617 0 1615 3 2 1 2 0 8 0 lockfspl 48 509 0 507 1 0 1 1 0 8 0 sessionpl 144 45 0 35 1 0 1 1 0 8 0 pgrppl 48 122 0 103 1 0 1 1 0 8 0 ucredpl 104 5698 0 5684 1 0 1 1 0 8 0 zombiepl 144 5481 0 5478 4 3 1 1 0 8 0 processpl 1168 4254 0 4181 6 0 6 6 0 8 0 procpl 656 10723 0 10643 8 0 8 8 0 8 0 srpgc 96 18 0 18 8 7 1 1 0 8 1 sosppl 168 22 0 22 9 8 1 1 0 8 1 sockpl 688 7824 0 7788 69 58 11 16 0 8 6 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 132 0 0 15 0 15 15 0 8 0 mcl2k 2048 64 0 0 5 0 5 5 0 8 0 mtagpl 96 273 0 0 7 0 7 7 0 8 0 mbufpl 256 661 0 0 36 0 36 36 0 8 0 bufpl 280 10443 0 4289 440 0 440 440 0 8 0 anonpl 24 493896 0 486974 135 77 58 70 0 184 1 amapchunkpl 152 128268 0 127575 70 35 35 35 0 158 6 amappl16 200 9279 0 9197 58 48 10 19 0 8 0 amappl15 192 14 0 14 1 1 0 1 0 8 0 amappl14 184 154 0 139 1 0 1 1 0 8 0 amappl13 176 76 0 75 1 0 1 1 0 8 0 amappl12 168 4995 0 4960 4 2 2 3 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 251 0 251 2 2 0 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 139 0 124 1 0 1 1 0 8 0 amappl6 120 286 0 280 1 0 1 1 0 8 0 amappl5 112 231 0 221 1 0 1 1 0 8 0 amappl4 104 394 0 373 1 0 1 1 0 8 0 amappl3 96 26965 0 26834 4 0 4 4 0 8 0 amappl2 88 906 0 831 2 0 2 2 0 8 0 amappl1 80 22826 0 22146 15 0 15 15 0 8 0 amappl 88 38428 0 38232 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 3 0 3 2 2 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 259 0 259 4 4 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 72 148 0 18 3 0 3 3 0 8 0 uaddrrnd 24 4203 0 4169 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4203 0 4169 1 0 1 1 0 8 0 vmmpekpl 168 32759 0 32701 4 0 4 4 0 8 0 vmmpepl 168 257461 0 255302 134 36 98 109 0 357 0 vmsppl 456 4202 0 4169 5 0 5 5 0 8 0 rwobjpl 64 69674 0 62455 128 7 121 121 0 8 0 pdppl 4096 8414 0 8338 132 52 80 86 0 8 4 pvpl 32 21370 0 0 174 2 172 172 0 265 0 pmappl 248 4202 0 4169 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 410 0 124 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000015e0030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000015e0018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015e0000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c505240) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002a3762b0,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80002a3762b0,ffff80002a44bf80,ffff80002a44bed0) at sys_exit+0x1a syscall(ffff80002a44bf80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a44bf80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7313f33651d0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029a9bff0) 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(ffffffff838e3cd8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838e3cd8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff80003c4d8540) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4d8540) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73a869233190, count: -6