witness: lock_object uninitialized: 0xffff8000015b4030 Starting stack trace... witness_checkorder(ffff8000015b4030,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff8000015b4030,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_do_enter_write(ffff8000015b4018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015b4000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c4ed940) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000ffff6f88,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000ffff6f88,ffff80002ccacba0,ffff80002ccacaf0) at sys_exit+0x1a syscall(ffff80002ccacba0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ccacba0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7dbd5fdea130, 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(ffff8000015b4030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000015b4018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015b4000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c4ed940) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000ffff6f88,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000ffff6f88,ffff80002ccacba0,ffff80002ccacaf0) at sys_exit+0x1a syscall(ffff80002ccacba0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ccacba0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7dbd5fdea130, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002ccac830 rbx 0 rdx 0 rcx 0xffff8000ffff6f88 rax 0xffffffff83851ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80002ccac7d0 r9 0x8080808080808080 r10 0x4faff5d89151381b r11 0x32318d702967fc7a r12 0 r13 0x1 r14 0xffff8000015b4030 r15 0x3 rip 0xffffffff81441685 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002ccac820 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=68954 pid=79374 tcnt=0 stat=onproc flags process=1001008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000ffff6f88 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000ffff6a68,0xffff8000ffff8a70 process=0xffff80003c4ed940 user=0xffff80002cca7000, vmspace=0xfffffd806bc71c98 estcpu=36, cpticks=10, pctcpu=0.2, user=0, sys=7, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 4942 178503 70179 0 2 0 syz-executor 4942 138911 70179 0 3 0x4000080 fsleep syz-executor 15878 96522 87671 0 2 0 syz-executor 15878 130356 87671 0 3 0x4000080 fsleep syz-executor 24129 435009 66896 0 3 0 vmmaplk syz-executor 24129 294374 66896 0 2 0x4000000 syz-executor 87584 28660 71103 0 2 0 syz-executor 87584 481840 71103 0 3 0x4000000 futex syz-executor 87584 520117 71103 0 2 0x4000000 syz-executor 22408 325104 71909 0 2 0 syz-executor 22408 70315 71909 0 3 0x4000080 kqsel syz-executor 22408 149892 71909 0 2 0x4000000 syz-executor 22408 521666 71909 0 3 0x4000080 fsleep syz-executor 27600 112071 88430 0 2 0x480 syz-executor 27600 267682 88430 0 3 0x4000080 fsleep syz-executor 27600 95906 88430 0 3 0x4000080 fsleep syz-executor 27600 89384 88430 0 2 0x4000000 syz-executor 71909 310186 55406 0 2 0x482 syz-executor 73147 20196 0 0 3 0x14200 acct acct 22551 286083 55406 0 2 0x482 syz-executor 87671 260404 55406 0 2 0x482 syz-executor 21542 364052 74227 0 3 0x82 sbwait sshd-session 30557 285094 0 0 3 0x14200 bored sosplice 69883 253019 55406 0 2 0x2 syz-executor 70179 352643 55406 0 2 0x482 syz-executor 66896 314361 55406 0 2 0x482 syz-executor 71103 435231 55406 0 2 0x482 syz-executor 88430 243985 55406 0 2 0x482 syz-executor 55406 217903 35992 0 3 0x82 kqread syz-executor 35992 92462 51807 0 3 0x10008a sigsusp ksh 51807 351969 17512 0 3 0x98 kqread sshd-session 17512 71126 74227 0 3 0x92 kqread sshd-session 9994 155479 1 0 2 0x100083 getty 74227 23842 1 0 3 0x88 kqread sshd 83569 507839 27588 74 3 0x1100092 bpf pflogd 27588 435047 1 0 3 0x80 sbwait pflogd 86962 170096 56170 73 2 0x1100090 syslogd 56170 392566 1 0 3 0x100082 sbwait syslogd 96500 385927 1 0 3 0x100080 kqread resolvd 86114 234901 82661 77 3 0x100092 kqread dhcpleased 51770 415384 82661 77 3 0x100092 kqread dhcpleased 82661 483227 1 0 3 0x80 kqread dhcpleased 3519 253799 0 0 3 0x14200 bored smr 58238 236683 0 0 2 0x14200 zerothread 57766 502239 0 0 3 0x14200 aiodoned aiodoned 32986 321030 0 0 3 0x14200 syncer update 20400 113487 0 0 3 0x14200 cleaner cleaner 45821 3522 0 0 3 0x14200 reaper reaper 34923 140158 0 0 3 0x14200 pgdaemon pagedaemon 8393 437029 0 0 3 0x14200 bored viomb 56721 456440 0 0 3 0x40014200 acpi0 acpi0 80972 341998 0 0 7 0x40014200 idle1 33000 218002 0 0 3 0x14200 bored softnet3 39694 474633 0 0 3 0x14200 bored softnet2 12993 9315 0 0 3 0x14200 bored softnet1 51222 390401 0 0 2 0x14200 softnet0 37397 496705 0 0 3 0x14200 bored systqmp 94633 50381 0 0 3 0x14200 bored systq 66951 160622 0 0 2 0x14200 softclockmp 84542 431021 0 0 2 0x40014200 softclock 45252 228929 0 0 3 0x40014200 idle0 1 115807 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 24129 (syz-executor) thread 0xffff8000ffff67d8 (294374) exclusive rwlock vmmaplk r = 0 (0xfffffd806bc71678) #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 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1858 #4 uvm_fault_check+0x987 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x987 sys/uvm/uvm_fault.c:774 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:668 #6 kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 #7 kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 #8 alltraps_kern_meltdown+0x7b #9 _copyin+0x57 #10 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 Process 22408 (syz-executor) thread 0xffff8000ffff6a68 (149892) exclusive rwlock futex r = 0 (0xffffffff837bbfe8) #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 sys_futex+0x69 sys/kern/sys_futex.c:98 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 69883 (syz-executor) thread 0xffff8000ffff82b0 (253019) exclusive rwlock vmmaplk r = 0 (0xfffffd806eb8b9f0) #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 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3811 #4 process_new+0x553 sys/kern/kern_fork.c:279 #5 fork1+0x3ea sys/kern/kern_fork.c:405 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10231 11039K 15203K 166960K 13562 0 pcb 18 17K 18K 166960K 386 0 rtable 170 7K 8K 166960K 655 0 pf 38 18K 19K 166960K 152 0 ifaddr 36 6K 8K 166960K 121 0 ifgroup 62 2K 3K 166960K 198 0 sysctl 4 1K 1K 166960K 6 0 counters 66 36K 37K 166960K 170 0 ioctlops 0 0K 4K 166960K 1691 0 iov 0 0K 16K 166960K 131 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1426 90K 90K 166960K 2979 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 38 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 103 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 1826 0 sigio 0 0K 0K 166960K 64 0 proc 81 127K 128K 166960K 833 0 subproc 72 4K 4K 166960K 109 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 548 0 in_multi 63 4K 7K 166960K 232 0 ether_multi 1 0K 0K 166960K 16 0 mrt 0 0K 0K 166960K 7 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 873 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 4K 166960K 36 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 232 73K 87K 166960K 18889 0 UVM aobj 9 4K 4K 166960K 9 0 pinsyscall 45 90K 104K 166960K 3088 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 92 0 NDP 13 0K 2K 166960K 81 0 temp 77 8644K 8740K 166960K 42638 0 kqueue 15 24K 28K 166960K 312 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 120 205 0 202 2 1 1 2 0 8 0 rtentry 112 201 0 130 4 0 4 4 0 8 0 unpcb 144 1687 0 1669 18 16 2 6 0 8 1 syncache 336 13 0 13 5 5 0 1 0 8 0 tcpqe 32 8 0 8 5 5 0 1 0 8 0 tcpcb 808 805 0 794 23 21 2 8 0 8 0 arp 120 31 0 20 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 376 2347 0 2332 38 35 3 15 0 8 0 nd6 136 44 0 25 1 0 1 1 0 8 0 pkpcb 40 89 0 89 6 6 0 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1168 31 0 31 7 6 1 1 0 8 1 pppxif 1472 7 0 7 4 3 1 1 0 8 1 pffrag 232 17 0 13 1 0 1 1 0 482 0 pffrnode 88 17 0 13 1 0 1 1 0 8 0 pffrent 40 60 0 56 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 pfstitem 24 125 0 74 1 0 1 1 0 8 0 pfstkey 128 125 0 74 2 0 2 2 0 8 0 pfstate 376 125 0 74 6 0 6 6 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 825 0 533 32 10 22 30 0 8 0 art_table 32 828 0 533 4 0 4 4 0 8 0 art_node 16 194 0 132 1 0 1 1 0 8 0 sysvmsgpl 40 119 0 114 1 0 1 1 0 8 0 semupl 112 4 0 4 2 2 0 1 0 8 0 semapl 112 101 0 91 1 0 1 1 0 8 0 shmpl 112 6 0 0 1 0 1 1 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 4708 0 3203 95 0 95 95 0 8 0 ffsino 280 4708 0 3203 109 0 109 109 0 8 0 nchpl 144 7307 0 5607 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 1 0 1 0 8 0 uvmvnodes 80 5754 0 0 118 0 118 118 0 8 0 vnodes 216 5754 0 0 320 0 320 320 0 8 0 namei 1024 27273 0 27271 8 6 2 3 0 8 1 percpumem 16 99 0 52 1 0 1 1 0 8 0 kstatmem 264 106 0 80 6 3 3 3 0 8 1 scsiplug 72 7 0 7 3 2 1 1 0 8 1 scxspl 216 21143 0 21143 13 12 1 8 1 8 1 plimitpl 152 473 0 456 1 0 1 1 0 8 0 sigapl 424 2140 0 2087 9 2 7 7 0 8 0 futexpl 64 25257 0 25251 1 0 1 1 0 8 0 knotepl 120 808 0 0 25 0 25 25 0 8 0 kqueuepl 216 694 0 681 7 6 1 5 0 8 0 pipepl 328 366 0 337 8 5 3 8 0 8 0 fdescpl 504 2117 0 2085 5 0 5 5 0 8 0 filepl 152 15475 0 15253 35 18 17 20 0 8 5 lockfpl 104 761 0 759 1 0 1 1 0 8 0 lockfspl 48 261 0 259 1 0 1 1 0 8 0 sessionpl 144 36 0 26 1 0 1 1 0 8 0 pgrppl 48 73 0 55 1 0 1 1 0 8 0 ucredpl 104 2463 0 2450 1 0 1 1 0 8 0 zombiepl 144 2738 0 2737 2 1 1 1 0 8 0 processpl 1168 2140 0 2087 5 1 4 5 0 8 0 procpl 656 4994 0 4930 8 2 6 7 0 8 0 srpgc 96 14 0 14 3 3 0 1 0 8 0 sosppl 168 11 0 11 5 5 0 1 0 8 0 sockpl 688 4361 0 4325 51 46 5 19 0 8 0 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 140 0 0 18 1 17 18 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 62 0 0 7 0 7 7 0 8 0 mtagpl 96 61 0 0 2 0 2 2 0 8 0 mbufpl 256 1203 0 0 74 0 74 74 0 8 0 bufpl 280 7871 0 1717 440 0 440 440 0 8 0 anonpl 24 246913 0 243048 111 51 60 60 0 184 19 amapchunkpl 152 60506 0 60009 53 27 26 30 0 158 3 amappl16 200 3937 0 3893 46 31 15 15 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 139 0 126 1 0 1 1 0 8 0 amappl13 176 17 0 17 2 2 0 1 0 8 0 amappl12 168 2841 0 2809 3 1 2 2 0 8 0 amappl11 160 53 0 38 1 0 1 1 0 8 0 amappl10 152 5 0 5 2 2 0 1 0 8 0 amappl9 144 254 0 254 1 1 0 1 0 8 0 amappl8 136 20 0 17 1 0 1 1 0 8 0 amappl7 128 126 0 112 1 0 1 1 0 8 0 amappl6 120 231 0 226 1 0 1 1 0 8 0 amappl5 112 144 0 133 1 0 1 1 0 8 0 amappl4 104 375 0 354 1 0 1 1 0 8 0 amappl3 96 12629 0 12515 5 1 4 4 0 8 0 amappl2 88 812 0 743 2 0 2 2 0 8 0 amappl1 80 15651 0 14990 18 2 16 16 0 8 0 amappl 88 18288 0 18116 5 0 5 5 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 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 72 0 72 3 3 0 1 0 8 0 dma128 128 256 0 256 3 2 1 1 0 8 1 dma64 64 10 0 10 4 4 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 8 0 0 1 0 1 1 0 8 0 uaddrrnd 24 2117 0 2084 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2117 0 2084 1 0 1 1 0 8 0 vmmpekpl 168 18286 0 18236 3 0 3 3 0 8 0 vmmpepl 168 133324 0 131300 128 28 100 103 0 357 3 vmsppl 456 2116 0 2084 6 1 5 5 0 8 0 rwobjpl 64 40642 0 33829 118 5 113 113 0 8 0 pdppl 4096 4241 0 4168 119 46 73 85 0 8 0 pvpl 32 18743 0 0 151 0 151 151 0 265 0 pmappl 248 2116 0 2084 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 413 0 101 10 0 10 10 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(ffff8000015b4030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000015b4018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015b4000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c4ed940) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000ffff6f88,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000ffff6f88,ffff80002ccacba0,ffff80002ccacaf0) at sys_exit+0x1a syscall(ffff80002ccacba0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002ccacba0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7dbd5fdea130, 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff800029a9bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5