witness: lock_object uninitialized: 0xffff800000cf8028 Starting stack trace... witness_checkorder(ffff800000cf8028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000cf8028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000cf8018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000cf8000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000cf8000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff80002120ba40) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002123bce0,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:225 single_thread_check_locked(ffff80002123bce0,0,0) at single_thread_check_locked+0x227 sys/kern/kern_sig.c:1958 userret(ffff80002123bce0) at userret+0x224 single_thread_check sys/kern/kern_sig.c:1999 [inline] userret(ffff80002123bce0) at userret+0x224 sys/kern/kern_sig.c:1946 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x7f7fffff4190, count: 249 End of stack trace. Stopped at db_enter+0x18: 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+0x18 sys/arch/amd64/amd64/db_interface.c:440 witness_checkorder(ffff800000cf8028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000cf8028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000cf8018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000cf8000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000cf8000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff80002120ba40) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002123bce0,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:225 single_thread_check_locked(ffff80002123bce0,0,0) at single_thread_check_locked+0x227 sys/kern/kern_sig.c:1958 userret(ffff80002123bce0) at userret+0x224 single_thread_check sys/kern/kern_sig.c:1999 [inline] userret(ffff80002123bce0) at userret+0x224 sys/kern/kern_sig.c:1946 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x7f7fffff4190, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800022c7b410 rbx 0x3 rdx 0 rcx 0 rax 0xffff80002123bce0 r8 0xffff800022c7b3b0 r9 0x8080808080808080 r10 0xae02497c9d8e31c5 r11 0xf2db843825183a99 r12 0xffff800000cf8001 r13 0xffff800000cf8028 r14 0 r15 0 rip 0xffffffff81410c88 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800022c7b400 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.2) pid=150482 stat=onproc flags process=1018 proc=82000 pri=32, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff80002123a2a0,0xffff80002123aa90 process=0xffff80002120ba40 user=0xffff800022c76000, vmspace=0xfffffd8061778cf0 estcpu=31, cpticks=12, pctcpu=0.0 user=0, sys=8, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 31475 110399 40943 0 2 0 syz-executor.1 31475 229229 40943 0 3 0x4000080 kqsel syz-executor.1 31475 182544 40943 0 2 0x4000000 syz-executor.1 31475 247951 40943 0 3 0x4000080 fsleep syz-executor.1 31475 347719 40943 0 2 0x4000000 syz-executor.1 98594 459117 46531 0 2 0 syz-executor.0 98594 410381 46531 0 3 0x4000080 fsleep syz-executor.0 98594 447439 46531 0 3 0x4000080 fsleep syz-executor.0 6518 26058 67961 0 2 0 syz-executor.3 6518 427698 67961 0 3 0x4000080 fsleep syz-executor.3 15797 135595 42766 0 2 0x482 syz-executor.2 80752 499885 1 0 2 0x100083 getty 16985 149657 0 0 3 0x14200 acct acct 67961 46862 42766 0 2 0x482 syz-executor.3 40943 130991 42766 0 2 0x482 syz-executor.1 41418 339380 0 0 3 0x14200 bored sosplice 46531 154870 42766 0 2 0x482 syz-executor.0 42766 59139 75608 0 3 0x82 thrsleep syz-fuzzer 42766 310488 75608 0 3 0x4000082 thrsleep syz-fuzzer 42766 496678 75608 0 3 0x4000082 thrsleep syz-fuzzer 42766 463261 75608 0 3 0x4000082 thrsleep syz-fuzzer 42766 296519 75608 0 3 0x4000082 thrsleep syz-fuzzer 42766 469136 75608 0 3 0x4000082 thrsleep syz-fuzzer 42766 449227 75608 0 3 0x4000082 thrsleep syz-fuzzer 42766 285408 75608 0 3 0x4000082 kqread syz-fuzzer 75608 127762 41471 0 3 0x10008a sigsusp ksh 41471 359922 84731 0 3 0x9a poll sshd 84731 296833 1 0 3 0x88 poll sshd 80092 285465 81530 74 3 0x100092 bpf pflogd 81530 85972 1 0 3 0x80 netio pflogd 202 455654 43762 73 2 0x100090 syslogd 43762 36831 1 0 3 0x100082 netio syslogd 26203 307744 1 0 3 0x100080 kqread resolvd 55084 115208 25873 77 3 0x100092 kqread dhcpleased 9598 507812 25873 77 3 0x100092 kqread dhcpleased 25873 405112 1 0 3 0x80 kqread dhcpleased 9156 335221 0 0 3 0x14200 bored smr 45121 300534 0 0 2 0x14200 zerothread 8406 338225 0 0 3 0x14200 aiodoned aiodoned 48482 319393 0 0 3 0x14200 syncer update 37214 322480 0 0 3 0x14200 cleaner cleaner 90608 208196 0 0 7 0x14200 reaper 17201 496503 0 0 3 0x14200 pgdaemon pagedaemon 28127 101044 0 0 3 0x14200 bored viomb 19493 199209 0 0 3 0x40014200 acpi0 acpi0 39098 375583 0 0 3 0x40014200 idle1 64990 8851 0 0 3 0x14200 bored softnet 17796 235877 0 0 3 0x14200 bored systqmp 6383 275348 0 0 3 0x14200 bored systq 72127 10964 0 0 2 0x40014200 softclock 34898 414430 0 0 3 0x40014200 idle0 1 151283 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10199 6755K 14811K 78643K 22684 0 pcb 13 14K 17K 78643K 602 0 rtable 127 15K 18K 78643K 1386 0 ifaddr 68 15K 17K 78643K 465 0 sysctl 2 0K 0K 78643K 2 0 counters 48 34K 34K 78643K 108 0 ioctlops 0 0K 4K 78643K 3356 0 iov 0 0K 20K 78643K 238 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1396 88K 88K 78643K 4701 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 28 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 262 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 45K 78643K 3233 0 sigio 0 0K 0K 78643K 8 0 proc 74 111K 111K 78643K 691 0 subproc 52 3K 3K 78643K 117 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 268 0 in_multi 37 2K 3K 78643K 274 0 ether_multi 1 0K 0K 78643K 50 0 mrt 10 0K 0K 78643K 30 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 157 705K 705K 78643K 157 0 exec 0 0K 2K 78643K 937 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 380 463K 467K 78643K 43530 0 UVM aobj 131 6K 6K 78643K 141 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 204 0 NDP 9 0K 1K 78643K 68 0 temp 108 4214K 4294K 78643K 27779 0 kqueue 13 20K 24K 78643K 89 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 579 0 576 8 7 1 3 0 8 0 rtentry 112 228 0 185 2 0 2 2 0 8 0 unpcb 136 2175 0 2160 22 21 1 6 0 8 0 syncache 296 22 0 22 6 6 0 1 0 8 0 tcpcb 736 755 0 746 18 15 3 8 0 8 0 arp 120 20 0 12 1 0 1 1 0 8 0 inpcb 304 3106 0 3095 47 45 2 11 0 8 0 rttmr 72 5 0 5 2 2 0 1 0 8 0 nd6 48 45 0 35 1 0 1 1 0 8 0 pkpcb 40 7 0 7 2 2 0 1 0 8 0 kcovpl 48 9 0 5 1 0 1 1 0 8 0 ppxss 1248 12 0 12 4 4 0 1 0 8 0 pfstscr 40 5 0 5 2 2 0 1 0 8 0 pffrag 232 15 0 15 2 1 1 1 0 482 1 pffrnode 88 15 0 15 2 1 1 1 0 8 1 pffrent 40 106 0 106 2 1 1 1 0 8 1 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 162 0 156 2 1 1 2 0 8 0 pftag 88 22 0 21 2 1 1 1 0 8 0 pfqueue 264 99 0 0 7 0 7 7 0 8 0 pfstitem 24 26 0 24 1 0 1 1 0 8 0 pfstkey 112 34 0 32 1 0 1 1 0 8 0 pfstate 320 29 0 27 3 2 1 3 0 8 0 pfrule 1360 1233 0 1192 5 1 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 686 0 472 21 7 14 18 0 8 0 art_table 32 687 0 472 4 1 3 3 0 8 0 art_node 16 160 0 123 1 0 1 1 0 8 0 sysvmsgpl 40 61 0 26 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 260 0 250 1 0 1 1 0 8 0 shmpl 112 138 0 10 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5455 0 4030 90 0 90 90 0 8 0 ffsino 272 5455 0 4030 96 0 96 96 0 8 0 nchpl 144 9857 0 8253 61 0 61 61 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 34096 0 34096 3 2 1 1 0 8 1 percpumem 16 66 0 30 1 0 1 1 0 8 0 vcpupl 2048 124 0 0 16 0 16 16 0 8 0 vmpool 560 133 0 9 9 0 9 9 0 8 0 pfiaddrpl 120 34 0 28 1 0 1 1 0 8 0 scxspl 216 35343 0 35343 17 16 1 8 0 8 1 plimitpl 152 291 0 280 1 0 1 1 0 8 0 sigapl 424 3485 0 3446 7 1 6 7 0 8 0 futexpl 64 28925 0 28921 3 2 1 1 0 8 0 knotepl 112 76 0 0 2 0 2 2 0 8 0 kqueuepl 216 513 0 503 12 11 1 4 0 8 0 pipepl 336 771 0 755 21 19 2 7 0 8 0 fdescpl 496 3449 0 3427 4 1 3 4 0 8 0 filepl 152 23314 0 23158 54 47 7 15 0 8 0 lockfpl 104 699 0 697 2 1 1 2 0 8 0 lockfspl 48 215 0 213 1 0 1 1 0 8 0 sessionpl 144 26 0 13 1 0 1 1 0 8 0 pgrppl 48 64 0 51 1 0 1 1 0 8 0 ucredpl 96 2158 0 2145 1 0 1 1 0 8 0 zombiepl 144 3910 0 3909 2 1 1 1 0 8 0 processpl 1064 3485 0 3446 4 0 4 4 0 8 0 procpl 672 10079 0 10023 11 5 6 8 0 8 0 srpgc 96 6 0 6 3 3 0 1 0 8 0 sosppl 168 32 0 31 2 1 1 1 0 8 0 sockpl 480 5872 0 5843 139 134 5 29 0 8 0 mcl64k 65536 20 0 0 3 0 3 3 0 8 0 mcl16k 16384 19 0 0 3 1 2 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 200 0 0 21 0 21 21 0 8 0 mtagpl 96 634 0 0 14 0 14 14 0 8 0 mbufpl 256 1695 0 0 98 0 98 98 0 8 0 bufpl 288 11185 0 4841 454 0 454 454 0 8 0 anonpl 24 1011951 0 992522 208 86 122 138 0 186 1 amapchunkpl 152 110965 0 110142 71 37 34 45 0 158 2 amappl16 200 10498 0 9886 85 52 33 45 0 8 0 amappl15 192 3 0 1 1 0 1 1 0 8 0 amappl14 184 3 0 2 1 0 1 1 0 8 0 amappl13 176 141 0 140 1 0 1 1 0 8 0 amappl12 168 1033 0 1029 2 1 1 1 0 8 0 amappl11 160 46 0 31 1 0 1 1 0 8 0 amappl10 152 159 0 150 1 0 1 1 0 8 0 amappl9 144 2188 0 2178 1 0 1 1 0 8 0 amappl8 136 760 0 702 2 0 2 2 0 8 0 amappl7 128 329 0 318 1 0 1 1 0 8 0 amappl6 120 1981 0 1955 1 0 1 1 0 8 0 amappl5 112 3632 0 3611 1 0 1 1 0 8 0 amappl4 104 817 0 790 1 0 1 1 0 8 0 amappl3 96 1456 0 1439 1 0 1 1 0 8 0 amappl2 88 640 0 595 9 7 2 2 0 8 0 amappl1 80 65784 0 65258 13 2 11 13 0 8 0 amappl 88 42920 0 42659 6 0 6 6 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 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 140 0 10 3 0 3 3 0 8 0 uaddrrnd 24 3582 0 3435 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3582 0 3435 1 0 1 1 0 8 0 vmmpekpl 168 30340 0 30291 3 0 3 3 0 8 0 vmmpepl 168 322082 0 319566 195 85 110 128 0 357 0 vmsppl 368 3581 0 3435 15 1 14 14 0 8 0 rwobjpl 56 87035 0 79421 114 6 108 110 0 8 0 pdppl 4096 7172 0 6994 214 36 178 179 0 8 0 pvpl 32 1766083 0 1742932 350 157 193 234 0 265 6 pmappl 248 3581 0 3435 11 1 10 10 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1091 0 84 29 0 29 29 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 witness_checkorder(ffff800000cf8028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000cf8028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000cf8018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000cf8000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000cf8000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff80002120ba40) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002123bce0,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:225 single_thread_check_locked(ffff80002123bce0,0,0) at single_thread_check_locked+0x227 sys/kern/kern_sig.c:1958 userret(ffff80002123bce0) at userret+0x224 single_thread_check sys/kern/kern_sig.c:1999 [inline] userret(ffff80002123bce0) at userret+0x224 sys/kern/kern_sig.c:1946 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x7f7fffff4190, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82993700) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82993700) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff800021148d20) at reaper+0x150 sys/kern/kern_exit.c:450 end trace frame: 0x0, count: -5