witness: lock_object uninitialized: 0xffff800000bf1028 Starting stack trace... witness_checkorder(ffff800000bf1028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000bf1028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000bf1018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000bf1000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000bf1000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f1900) at unveil_desStopped at db_enter+0x18: addq $0x8,%rsp ddb{0}> 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(ffff800000bf1028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000bf1028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000bf1018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000bf1000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000bf1000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f1900) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff8000212aafc8,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff8000212aafc8,ffff8000256e60c0,ffff8000256e6120) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000256e6190) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000256e6190) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe3280, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000256e5e60 rbx 0x3 rdx 0 rcx 0x2ad5 __ALIGN_SIZE+0x1ad5 rax 0xffff8000212aafc8 r8 0xffff8000256e5e00 r9 0x8080808080808080 r10 0xc7e6ba03f0b5bea4 r11 0x51d5ddc68e687a74 r12 0xffff800000bf1001 r13 0xffff800000bf1028 r14 0 r15 0 rip 0xffffffff81410c88 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000256e5e50 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.2) pid=96487 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff8000212aba48,0xffffffff8283e338 process=0xffff8000211f1900 user=0xffff8000256e1000, vmspace=0xfffffd8008586a10 estcpu=34, cpticks=3, pctcpu=0.39 user=0, sys=3, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 59110 66912 71632 0 3 0x82 piperd syz-executor.0 82041 290834 71632 0 2 0x482 syz-executor.2 62330 77405 71632 0 3 0x82 piperd syz-executor.1 50438 270248 0 0 3 0x14200 acct acct 87056 145962 0 0 3 0x14280 nfsidl nfsio 76246 276879 0 0 3 0x14280 nfsidl nfsio 62358 22376 0 0 3 0x14280 nfsidl nfsio 88910 504922 0 0 3 0x14280 nfsidl nfsio 69955 236252 0 0 3 0x14280 nfsidl nfsio 52976 304243 0 0 3 0x14280 nfsidl nfsio 87231 129373 0 0 3 0x14280 nfsidl nfsio 69502 202225 0 0 3 0x14280 nfsidl nfsio 8251 364352 0 0 3 0x14280 nfsidl nfsio 82387 110682 0 0 3 0x14280 nfsidl nfsio 85204 409485 0 0 3 0x14280 nfsidl nfsio 32652 210024 0 0 3 0x14280 nfsidl nfsio 23979 450645 0 0 3 0x14280 nfsidl nfsio 40012 182046 0 0 3 0x14280 nfsidl nfsio 42407 267944 0 0 3 0x14280 nfsidl nfsio 53618 342706 0 0 3 0x14280 nfsidl nfsio 50608 3491 0 0 3 0x14280 nfsidl nfsio 71462 429027 0 0 3 0x14280 nfsidl nfsio 95656 158996 0 0 3 0x14280 nfsidl nfsio 20897 410374 0 0 3 0x14280 nfsidl nfsio 1798 350426 71632 0 3 0x82 piperd syz-executor.3 50968 39842 0 0 3 0x14200 bored sosplice 71632 324089 62483 0 3 0x82 thrsleep syz-fuzzer 71632 241454 62483 0 3 0x4000082 thrsleep syz-fuzzer 71632 276860 62483 0 3 0x4000082 thrsleep syz-fuzzer 71632 310674 62483 0 3 0x4000082 kqread syz-fuzzer 71632 270774 62483 0 3 0x4000082 thrsleep syz-fuzzer 71632 136739 62483 0 3 0x4000082 thrsleep syz-fuzzer 71632 80472 62483 0 3 0x4000082 thrsleep syz-fuzzer 71632 121755 62483 0 3 0x4000082 thrsleep syz-fuzzer 71632 274675 62483 0 3 0x4000082 thrsleep syz-fuzzer 71632 181181 62483 0 3 0x4000082 thrsleep syz-fuzzer 62483 159602 46782 0 3 0x10008a sigsusp ksh 46782 456740 83531 0 3 0x9a poll sshd 93587 181807 1 0 3 0x100083 ttyin getty 83531 309083 1 0 3 0x88 poll sshd 9272 194593 67521 74 3 0x100092 bpf pflogd 67521 259408 1 0 3 0x80 netio pflogd 72856 290872 87820 73 2 0x100090 syslogd 87820 404313 1 0 3 0x100082 netio syslogd 71010 6770 1 0 3 0x100080 kqread resolvd 6029 33349 92837 77 3 0x100092 kqread dhcpleased 3397 47421 92837 77 3 0x100092 kqread dhcpleased 92837 314642 1 0 3 0x80 kqread dhcpleased 90636 239372 0 0 3 0x14200 bored smr 24442 415870 0 0 3 0x14200 pgzero zerothread 78607 263344 0 0 3 0x14200 aiodoned aiodoned 51243 330490 0 0 3 0x14200 syncer update 19374 447419 0 0 3 0x14200 cleaner cleaner 66542 101795 0 0 7 0x14200 reaper 18944 250124 0 0 3 0x14200 pgdaemon pagedaemon 75071 155593 0 0 3 0x14200 bored viomb 39397 309592 0 0 3 0x40014200 acpi0 acpi0 49284 68474 0 0 3 0x40014200 idle1 57601 34484 0 0 3 0x14200 bored softnet 45007 73267 0 0 3 0x14200 bored systqmp 36678 274974 0 0 3 0x14200 bored systq 66038 179851 0 0 2 0x40014200 softclock 45498 112203 0 0 3 0x40014200 idle0 1 79921 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 10167 6476K 14932K 78643K 23860 0 pcb 13 12K 14K 78643K 327 0 rtable 147 7K 9K 78643K 1164 0 ifaddr 66 16K 17K 78643K 407 0 counters 48 34K 35K 78643K 164 0 ioctlops 0 0K 6K 78643K 1954 0 iov 0 0K 32K 78643K 245 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1360 85K 86K 78643K 5409 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 16 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 208 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 6 17K 49K 78643K 2965 0 sigio 0 0K 0K 78643K 19 0 proc 76 111K 111K 78643K 978 0 subproc 52 3K 3K 78643K 290 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 68 0 in_multi 51 3K 3K 78643K 361 0 ether_multi 1 0K 0K 78643K 39 0 mrt 0 0K 0K 78643K 11 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 79 360K 360K 78643K 79 0 exec 0 0K 2K 78643K 949 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 280 133K 142K 78643K 38316 0 UVM aobj 127 3K 3K 78643K 133 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 116 0 NDP 8 0K 1K 78643K 115 0 temp 115 4224K 4319K 78643K 21226 0 kqueue 10 14K 20K 78643K 255 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 120 404 0 401 7 6 1 3 0 8 0 rtentry 112 293 0 236 2 0 2 2 0 8 0 unpcb 136 1090 0 1075 17 16 1 6 0 8 0 syncache 296 12 0 12 5 5 0 1 0 8 0 tcpqe 32 199 0 199 3 3 0 2 0 8 0 tcpcb 736 719 0 713 36 34 2 10 0 8 0 arp 120 46 0 36 1 0 1 1 0 8 0 inpcb 304 2354 0 2345 29 28 1 6 0 8 0 nd6 48 73 0 61 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 kcovpl 48 22 0 18 1 0 1 1 0 8 0 ppxss 1248 13 0 13 3 3 0 1 0 8 0 pfstscr 40 3 0 3 1 1 0 1 0 8 0 pffrag 232 10 0 10 1 1 0 1 0 482 0 pffrnode 88 10 0 10 1 1 0 1 0 8 0 pffrent 40 239 0 239 1 1 0 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 27 0 21 2 1 1 1 0 8 0 pftag 88 4 0 3 1 0 1 1 0 8 0 pfqueue 264 5 0 5 2 2 0 1 0 8 0 pfstitem 24 48 0 43 1 0 1 1 0 8 0 pfstkey 112 60 0 55 1 0 1 1 0 8 0 pfstate 320 52 0 47 3 1 2 3 0 8 0 pfrule 1360 214 0 196 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1263 0 987 24 6 18 18 0 8 0 art_table 32 1264 0 987 4 1 3 3 0 8 0 art_node 16 289 0 239 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 11 1 0 1 1 0 8 0 semapl 112 197 0 187 1 0 1 1 0 8 0 shmpl 112 130 0 6 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5182 0 3760 90 0 90 90 0 8 0 ffsino 272 5182 0 3760 97 1 96 96 0 8 0 nchpl 144 9138 0 7537 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 34150 0 34150 3 1 2 2 0 8 2 percpumem 16 94 0 58 1 0 1 1 0 8 0 vcpupl 2048 6 0 0 1 0 1 1 0 8 0 vmpool 560 46 0 40 2 1 1 1 0 8 0 pfiaddrpl 120 9 0 2 1 0 1 1 0 8 0 scxspl 216 25947 0 25947 12 11 1 8 0 8 1 plimitpl 152 117 0 106 1 0 1 1 0 8 0 sigapl 424 3171 0 3115 7 0 7 7 0 8 0 futexpl 64 25455 0 25455 1 0 1 1 0 8 1 knotepl 112 86 0 0 3 0 3 3 0 8 0 kqueuepl 216 1272 0 1266 22 21 1 5 0 8 0 pipepl 336 672 0 656 14 7 7 7 0 8 5 fdescpl 496 3135 0 3116 5 2 3 4 0 8 0 filepl 152 21597 0 21447 45 31 14 17 0 8 8 lockfpl 104 766 0 764 3 1 2 2 0 8 1 lockfspl 48 186 0 184 1 0 1 1 0 8 0 sessionpl 144 38 0 25 1 0 1 1 0 8 0 pgrppl 48 42 0 29 1 0 1 1 0 8 0 ucredpl 96 1859 0 1847 1 0 1 1 0 8 0 zombiepl 144 4588 0 4587 1 0 1 1 0 8 0 processpl 1064 3171 0 3115 5 1 4 5 0 8 0 procpl 672 8540 0 8474 8 1 7 7 0 8 0 srpgc 96 32 0 32 3 3 0 1 0 8 0 sosppl 168 24 0 24 6 6 0 1 0 8 0 sockpl 480 3858 0 3831 65 60 5 20 0 8 1 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 11 0 0 2 0 2 2 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 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 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 381 0 0 47 0 47 47 0 8 0 mtagpl 96 892 0 0 21 0 21 21 0 8 0 mbufpl 256 6944 0 0 434 1 433 433 0 8 0 bufpl 288 7763 0 1418 454 0 454 454 0 8 0 anonpl 24 857240 0 842656 155 36 119 124 0 186 7 amapchunkpl 152 96240 0 95548 41 9 32 36 0 158 0 amappl16 200 6967 0 6419 44 11 33 38 0 8 2 amappl15 192 790 0 788 1 0 1 1 0 8 0 amappl14 184 92 0 91 2 1 1 1 0 8 0 amappl13 176 394 0 393 1 0 1 1 0 8 0 amappl12 168 864 0 857 1 0 1 1 0 8 0 amappl11 160 62 0 48 1 0 1 1 0 8 0 amappl10 152 550 0 542 1 0 1 1 0 8 0 amappl9 144 583 0 578 1 0 1 1 0 8 0 amappl8 136 930 0 877 2 0 2 2 0 8 0 amappl7 128 386 0 373 1 0 1 1 0 8 0 amappl6 120 378 0 362 1 0 1 1 0 8 0 amappl5 112 3112 0 3090 1 0 1 1 0 8 0 amappl4 104 1114 0 1088 1 0 1 1 0 8 0 amappl3 96 1216 0 1198 1 0 1 1 0 8 0 amappl2 88 1057 0 1017 3 2 1 2 0 8 0 amappl1 80 60479 0 60005 14 3 11 13 0 8 0 amappl 88 37666 0 37467 7 1 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 72 132 0 6 3 0 3 3 0 8 0 uaddrrnd 24 3181 0 3155 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3181 0 3155 1 0 1 1 0 8 0 vmmpekpl 168 27773 0 27725 3 0 3 3 0 8 0 vmmpepl 168 295406 0 293436 187 69 118 119 0 357 19 vmsppl 368 3180 0 3155 4 1 3 3 0 8 0 rwobjpl 56 77345 0 69880 108 1 107 107 0 8 0 pdppl 4096 6370 0 6316 97 37 60 62 0 8 6 pvpl 32 1502598 0 1484237 247 56 191 201 0 265 10 pmappl 248 3180 0 3155 2 0 2 2 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1321 0 91 36 0 36 36 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(ffff800000bf1028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000bf1028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000bf1018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000bf1000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000bf1000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f1900) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff8000212aafc8,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff8000212aafc8,ffff8000256e60c0,ffff8000256e6120) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff8000256e6190) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000256e6190) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe3280, count: -9 ddb{0}> machine ddbcpu 1 troy+0xad exit1St(ffff8000212aafco8,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exipt(ffff8000212aafpc8,ffff8000256e6e0c0,ffff8000256ed6120) at sys_exi t+0x16 syscall(affff8000256e6190t) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(affff8000256e6190t) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() a t Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe3280, count: 249 En d of stack tracex. 86_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+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82993700) at __mp_lock+0x129 sys/kern/kern_lock.c:147 reaper(ffff800021149260) at reaper+0x150 sys/kern/kern_exit.c:450 end trace frame: 0x0, count: -5