witness: lock_object uninitialized: 0xffff800001768030 Starting stack trace... witness_checkorder(ffff800001768030,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff800001768030,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_do_enter_write(ffff800001768018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff800001768000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002a412240) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000ffffaf70,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000ffffaf70,ffff80002a3be590,ffff80002a3be4e0) at sys_exit+0x1a syscall(ffff80002a3be590) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3be590) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71e87de5a040, 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(ffff800001768030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff800001768018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff800001768000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002a412240) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000ffffaf70,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000ffffaf70,ffff80002a3be590,ffff80002a3be4e0) at sys_exit+0x1a syscall(ffff80002a3be590) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3be590) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71e87de5a040, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a3be220 rbx 0 rdx 0 rcx 0xffff8000ffffaf70 rax 0xffff800029a9bff0 r8 0xffff80002a3be1c0 r9 0x8080808080808080 r10 0xe62e608551ded7f4 r11 0x8441702d52edf162 r12 0 r13 0x1 r14 0xffff800001768030 r15 0x3 rip 0xffffffff81cd1b05 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a3be210 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=416306 pid=17838 tcnt=0 stat=onproc flags process=1018 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000ffffaf70 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000ffffb9b0,0xffff8000ffffd208 process=0xffff80002a412240 user=0xffff80002a3b9000, vmspace=0xfffffd807eb8b8e8 estcpu=36, cpticks=8, pctcpu=0.0, user=0, sys=8, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 23867 484252 78297 0 2 0 syz-executor 23867 114172 78297 0 3 0x4000080 fsleep syz-executor 99884 458479 22674 0 2 0 syz-executor 99884 317783 22674 0 2 0x4000000 syz-executor 4692 413060 99233 0 2 0 syz-executor 4692 493043 99233 0 7 0x4000001 syz-executor 4692 275845 99233 0 3 0x4000080 fsleep syz-executor 4692 59552 99233 0 3 0x4000080 fsleep syz-executor 12396 506038 2534 -1 3 0x90 nanoslp syz-executor 12396 172318 2534 -1 3 0x4000090 sbwait syz-executor 12396 379566 2534 -1 3 0x4000090 fsleep syz-executor 12396 196847 2534 -1 3 0x4000090 fsleep syz-executor 34740 236648 5717 0 3 0x80 nanoslp syz-executor 34740 317060 5717 0 2 0x4000000 syz-executor 34740 342199 5717 0 3 0x4000080 fsleep syz-executor 34740 103286 5717 0 3 0x4000080 fsleep syz-executor 99233 8853 13246 0 3 0x82 nanoslp syz-executor 13371 118036 1 0 3 0x100083 ttyin getty 78297 149630 13246 0 3 0x82 nanoslp syz-executor 87843 295206 13246 0 3 0x82 wait syz-executor 52721 101262 13246 0 3 0x82 nanoslp syz-executor 74047 385598 13246 0 3 0x82 wait syz-executor 2534 152153 13246 0 3 0x82 nanoslp syz-executor 22674 240330 13246 0 3 0x82 nanoslp syz-executor 5717 288347 13246 0 3 0x82 nanoslp syz-executor 13514 334919 80279 0 3 0x82 sbwait sshd-session 60673 13401 0 0 3 0x14200 bored sosplice 13246 164256 38741 0 3 0x82 kqread syz-executor 38741 244857 569 0 3 0x10008a sigsusp ksh 569 183300 19552 0 3 0x98 kqread sshd-session 19552 188018 80279 0 3 0x92 kqread sshd-session 80279 275372 1 0 3 0x88 kqread sshd 94384 236050 65373 74 3 0x1100092 bpf pflogd 65373 503673 1 0 3 0x80 sbwait pflogd 17065 268854 74460 73 3 0x1100090 kqread syslogd 74460 400676 1 0 3 0x100082 sbwait syslogd 71717 63418 1 0 3 0x100080 kqread resolvd 36095 465226 39792 77 3 0x100092 kqread dhcpleased 16710 40648 39792 77 3 0x100092 kqread dhcpleased 39792 310266 1 0 3 0x80 kqread dhcpleased 96630 149990 0 0 3 0x14200 bored smr 70679 30975 0 0 3 0x14200 pgzero zerothread 3888 433502 0 0 3 0x14200 aiodoned aiodoned 37126 313835 0 0 3 0x14200 syncer update 3767 196466 0 0 3 0x14200 cleaner cleaner 5401 311867 0 0 2 0x14200 reaper 51005 41363 0 0 3 0x14200 pgdaemon pagedaemon 44594 121427 0 0 3 0x14200 bored viomb 31794 296704 0 0 3 0x40014200 acpi0 acpi0 91041 94545 0 0 3 0x40014200 idle1 88526 127692 0 0 3 0x14200 bored softnet3 98183 428641 0 0 3 0x14200 bored softnet2 74604 183677 0 0 3 0x14200 bored softnet1 29742 363618 0 0 2 0x14200 softnet0 83065 259594 0 0 3 0x14200 bored systqmp 91954 167257 0 0 3 0x14200 bored systq 85610 434300 0 0 3 0x14200 tmoslp softclockmp 74488 1045 0 0 3 0x40014200 tmoslp softclock 44094 101350 0 0 3 0x40014200 idle0 1 129711 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 5401 (reaper) thread 0xffff8000ffffc7b8 (311867) exclusive rwlock kmmaplk r = 0 (0xffffffff8394a328) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10245 11141K 13295K 166960K 18258 0 pcb 17 19K 21K 166960K 885 0 rtable 226 13K 14K 166960K 1090 0 pf 41 18K 22K 166960K 217 0 ifaddr 43 8K 9K 166960K 200 0 ifgroup 64 2K 3K 166960K 289 0 sysctl 4 1K 1K 166960K 10 0 counters 68 36K 37K 166960K 314 0 ioctlops 0 0K 4K 166960K 1992 0 iov 0 0K 28K 166960K 491 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1493 94K 94K 166960K 5041 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 60K 64K 166960K 78 0 VM map 2 1K 1K 166960K 2 0 sem 27 37K 37K 166960K 232 0 dirhash 12 2K 2K 166960K 105 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 236K 166960K 4293 0 sigio 0 0K 0K 166960K 72 0 proc 79 115K 128K 166960K 1348 0 subproc 72 4K 4K 166960K 165 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 608 0 in_multi 85 6K 8K 166960K 415 0 ether_multi 1 0K 0K 166960K 31 0 mrt 2 0K 0K 166960K 11 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 1653 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 274 74K 88K 166960K 41980 0 UVM aobj 181 12K 12K 166960K 196 0 pinsyscall 45 90K 105K 166960K 5681 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 213 0 NDP 14 0K 1K 166960K 143 0 temp 80 8644K 8724K 166960K 149973 0 kqueue 13 20K 34K 166960K 701 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 120 542 0 537 7 6 1 3 0 8 0 rtentry 112 348 0 253 4 0 4 4 0 8 1 unpcb 144 3993 0 3964 38 35 3 8 0 8 1 syncache 336 16 0 16 9 9 0 1 0 8 0 tcpqe 32 5 0 5 4 4 0 1 0 8 0 tcpcb 808 1793 0 1783 36 27 9 11 0 8 8 arp 120 67 0 42 1 0 1 1 0 8 0 inpcb 376 5747 0 5729 70 60 10 15 0 8 8 nd6 136 70 0 46 2 0 2 2 0 8 1 pkpcb 40 17 0 17 8 7 1 1 0 8 1 kcovpl 48 18 0 10 1 0 1 1 0 8 0 ppxss 1168 89 0 89 7 6 1 1 0 8 1 pppxif 1472 42 0 42 6 5 1 1 0 8 1 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 73 0 65 1 0 1 1 0 482 0 pffrnode 88 39 0 32 1 0 1 1 0 8 0 pffrent 40 142 0 134 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 2 0 0 1 0 1 1 0 8 0 pfstitem 24 298 0 153 1 0 1 1 0 8 0 pfstkey 128 298 0 153 5 0 5 5 0 8 0 pfstate 376 297 0 153 15 0 15 15 0 8 0 pfrule 1344 22 0 16 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1647 0 1216 47 16 31 33 0 8 1 art_table 32 1650 0 1216 5 0 5 5 0 8 0 art_node 16 340 0 258 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 5 2 1 1 1 0 8 0 semupl 112 4 0 4 3 3 0 1 0 8 0 semapl 112 221 0 196 1 0 1 1 0 8 0 shmpl 112 193 0 15 6 0 6 6 0 8 0 dirhash 1024 81 0 64 3 0 3 3 0 8 0 dino2pl 256 9344 0 7819 96 0 96 96 0 8 0 ffsino 280 9344 0 7819 110 0 110 110 0 8 0 nchpl 144 15446 0 14826 64 39 25 64 0 8 0 rtmask 32 3 0 3 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 54899 0 54899 10 9 1 2 0 8 1 percpumem 16 171 0 123 1 0 1 1 0 8 0 kstatmem 264 174 0 146 5 2 3 3 0 8 0 scsiplug 72 14 0 14 5 4 1 1 0 8 1 scxspl 216 46359 0 46359 20 17 3 8 1 8 3 plimitpl 152 1148 0 1131 1 0 1 1 0 8 0 sigapl 424 4596 0 4544 10 1 9 9 0 8 0 futexpl 64 62146 0 62139 1 0 1 1 0 8 0 knotepl 120 622 0 0 18 0 18 18 0 8 0 kqueuepl 216 1483 0 1473 16 15 1 8 0 8 0 pipepl 328 704 0 675 13 10 3 8 0 8 0 fdescpl 504 4533 0 4501 5 0 5 5 0 8 0 filepl 152 33885 0 33636 51 36 15 19 0 8 3 lockfpl 104 1640 0 1637 4 3 1 2 0 8 0 lockfspl 48 563 0 560 1 0 1 1 0 8 0 sessionpl 144 51 0 41 1 0 1 1 0 8 0 pgrppl 48 111 0 93 1 0 1 1 0 8 0 ucredpl 104 5839 0 5823 1 0 1 1 0 8 0 zombiepl 144 5940 0 5937 3 2 1 1 0 8 0 processpl 1168 4596 0 4544 8 2 6 6 0 8 1 procpl 656 11543 0 11478 10 2 8 8 0 8 0 srpgc 96 27 0 27 7 6 1 1 0 8 1 sosppl 168 14 0 14 6 6 0 1 0 8 0 sockpl 688 10500 0 10448 116 103 13 20 0 8 8 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 111 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 40 0 0 4 0 4 4 0 8 0 mtagpl 96 166 0 0 4 0 4 4 0 8 0 mbufpl 256 1220 0 0 77 0 77 77 0 8 0 bufpl 280 14065 0 7911 440 0 440 440 0 8 0 anonpl 24 510790 0 505816 93 38 55 65 0 184 0 amapchunkpl 152 135782 0 135110 70 41 29 33 0 158 1 amappl16 200 10020 0 9978 51 38 13 18 0 8 4 amappl15 192 81 0 81 2 2 0 1 0 8 0 amappl14 184 209 0 196 1 0 1 1 0 8 0 amappl13 176 65 0 65 2 2 0 1 0 8 0 amappl12 168 5359 0 5326 4 1 3 3 0 8 1 amappl11 160 55 0 40 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 1 0 1 0 8 0 amappl9 144 246 0 246 1 1 0 1 0 8 0 amappl8 136 109 0 106 1 0 1 1 0 8 0 amappl7 128 148 0 132 1 0 1 1 0 8 0 amappl6 120 293 0 288 1 0 1 1 0 8 0 amappl5 112 188 0 177 1 0 1 1 0 8 0 amappl4 104 416 0 397 1 0 1 1 0 8 0 amappl3 96 29057 0 28919 4 0 4 4 0 8 0 amappl2 88 933 0 863 2 0 2 2 0 8 0 amappl1 80 24253 0 23588 16 0 16 16 0 8 0 amappl 88 41188 0 40975 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 8 0 8 3 3 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 21 0 20 1 0 1 1 0 8 0 aobjpl 72 195 0 15 4 0 4 4 0 8 0 uaddrrnd 24 4533 0 4500 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4533 0 4500 1 0 1 1 0 8 0 vmmpekpl 168 34939 0 34871 4 0 4 4 0 8 0 vmmpepl 168 276968 0 274833 125 23 102 105 0 357 2 vmsppl 456 4532 0 4500 6 1 5 5 0 8 0 rwobjpl 64 73922 0 66706 125 5 120 120 0 8 0 pdppl 4096 9074 0 9000 138 62 76 88 0 8 2 pvpl 32 18908 0 0 152 0 152 152 0 265 0 pmappl 248 4532 0 4500 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 469 0 138 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8380dff0) 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(ffffffff8394c278) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8394c278) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80003c4fcc80,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff8394c278) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8394c278) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff8394c278) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8394c278) at __mp_lock+0x192 sys/kern/kern_lock.c:144 ktrstruct(ffff80002a38d208,ffffffff833986eb,ffff80003c4fcfe8,8) at ktrstruct+0xe2 sys/kern/kern_ktrace.c:313 sys_socketpair(ffff80002a38d208,ffff80003c4fd120,ffff80003c4fd070) at sys_socketpair+0x5c5 sys/kern/uipc_syscalls.c:506 syscall(ffff80003c4fd120) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4fd120) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9c22637c260, count: -14 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(ffff800001768030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff800001768018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff800001768000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002a412240) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000ffffaf70,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000ffffaf70,ffff80002a3be590,ffff80002a3be4e0) at sys_exit+0x1a syscall(ffff80002a3be590) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3be590) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71e87de5a040, count: -9