witness: lock_object uninitialized: 0xffff800000e55028 Starting stack trace... witness_checkorder(ffff800000e55028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000e55028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000e55018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e55000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000e55000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff800027b3b1f8) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff8000244c3510,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:225 single_thread_check_locked(ffff8000244c3510,0,0) at single_thread_check_locked+0x227 sys/kern/kern_sig.c:1958 userret(ffff8000244c3510) at userret+0x224 single_thread_check sys/kern/kern_sig.c:1999 [inline] userret(ffff8000244c3510) at userret+0x224 sys/kern/kern_sig.c:1946 syscall(ffff8000244be750) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff8000244be750) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffae60, count: 248 End of stack trace. Stopped at db_enter+0x18: 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+0x18 sys/arch/amd64/amd64/db_interface.c:440 witness_checkorder(ffff800000e55028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000e55028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000e55018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e55000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000e55000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff800027b3b1f8) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff8000244c3510,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:225 single_thread_check_locked(ffff8000244c3510,0,0) at single_thread_check_locked+0x227 sys/kern/kern_sig.c:1958 userret(ffff8000244c3510) at userret+0x224 single_thread_check sys/kern/kern_sig.c:1999 [inline] userret(ffff8000244c3510) at userret+0x224 sys/kern/kern_sig.c:1946 syscall(ffff8000244be750) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff8000244be750) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffae60, count: -10 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000244be3a0 rbx 0x3 rdx 0 rcx 0 rax 0xffff8000244c3510 r8 0xffff8000244be340 r9 0x8080808080808080 r10 0x7ca916f6366b55a8 r11 0xf3017ae1890f3b16 r12 0xffff800000e55001 r13 0xffff800000e55028 r14 0 r15 0 rip 0xffffffff81410c88 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000244be390 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.2) pid=296658 stat=onproc flags process=1008 proc=82000 pri=80, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000244c3270,0xffff800021237510 process=0xffff800027b3b1f8 user=0xffff8000244b9000, vmspace=0xfffffd8063612758 estcpu=36, cpticks=9, pctcpu=0.0 user=0, sys=9, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 50654 446695 4554 0 2 0 syz-executor.3 14523 118681 99036 0 7 0 syz-executor.1 14523 254122 99036 0 3 0x4000080 fsleep syz-executor.1 14523 268492 99036 0 2 0x4000000 syz-executor.1 42836 257999 15461 0 2 0 syz-executor.0 42836 199088 15461 0 3 0x4000080 fsleep syz-executor.0 42836 470055 15461 0 3 0x4000080 fsleep syz-executor.0 99036 67410 17256 0 3 0x82 nanoslp syz-executor.1 15461 11900 17256 0 3 0x82 nanoslp syz-executor.0 96068 362236 17256 0 3 0x82 nanoslp syz-executor.2 4554 204416 17256 0 3 0x82 nanoslp syz-executor.3 20972 26009 1 0 3 0x100083 ttyin getty 93693 402387 0 0 3 0x14280 nfsidl nfsio 40698 107799 0 0 3 0x14280 nfsidl nfsio 74249 171517 0 0 3 0x14280 nfsidl nfsio 35577 283575 0 0 3 0x14280 nfsidl nfsio 84949 3592 0 0 3 0x14280 nfsidl nfsio 41923 9564 0 0 3 0x14280 nfsidl nfsio 79383 99040 0 0 3 0x14280 nfsidl nfsio 69184 493705 0 0 3 0x14280 nfsidl nfsio 16264 112248 0 0 3 0x14280 nfsidl nfsio 84306 76585 0 0 3 0x14280 nfsidl nfsio 18343 36798 0 0 3 0x14280 nfsidl nfsio 40855 122675 0 0 3 0x14280 nfsidl nfsio 94815 35895 0 0 3 0x14280 nfsidl nfsio 27807 182022 0 0 3 0x14280 nfsidl nfsio 62237 400575 0 0 3 0x14280 nfsidl nfsio 4648 169067 0 0 3 0x14280 nfsidl nfsio 7634 428366 0 0 3 0x14280 nfsidl nfsio 63823 341138 0 0 3 0x14280 nfsidl nfsio 80032 359221 0 0 3 0x14280 nfsidl nfsio 88996 66026 0 0 3 0x14280 nfsidl nfsio 97446 130020 0 0 3 0x14200 bored sosplice 17256 332059 46953 0 3 0x82 thrsleep syz-fuzzer 17256 147928 46953 0 3 0x4000082 nanoslp syz-fuzzer 17256 317753 46953 0 3 0x4000082 thrsleep syz-fuzzer 17256 216034 46953 0 3 0x4000082 thrsleep syz-fuzzer 17256 431586 46953 0 3 0x4000082 kqread syz-fuzzer 17256 464854 46953 0 3 0x4000082 thrsleep syz-fuzzer 17256 432290 46953 0 3 0x4000082 thrsleep syz-fuzzer 17256 16047 46953 0 3 0x4000082 thrsleep syz-fuzzer 46953 17131 9320 0 3 0x10008a sigsusp ksh 9320 224406 25145 0 3 0x9a poll sshd 25145 178949 1 0 3 0x88 poll sshd 48345 31677 63316 74 3 0x100092 bpf pflogd 63316 50946 1 0 3 0x80 netio pflogd 24493 88007 38532 73 3 0x100090 kqread syslogd 38532 326892 1 0 3 0x100082 netio syslogd 42460 148325 1 0 3 0x100080 kqread resolvd 12753 112945 41062 77 3 0x100092 kqread dhcpleased 17536 473736 41062 77 3 0x100092 kqread dhcpleased 41062 260569 1 0 3 0x80 kqread dhcpleased 843 235125 0 0 3 0x14200 bored smr 94353 306016 0 0 2 0x14200 zerothread 29183 241299 0 0 3 0x14200 aiodoned aiodoned 78210 146031 0 0 3 0x14200 syncer update 63153 186734 0 0 3 0x14200 cleaner cleaner 53171 326738 0 0 3 0x14200 reaper reaper 58138 315301 0 0 3 0x14200 pgdaemon pagedaemon 91706 82968 0 0 3 0x14200 bored viomb 4179 523541 0 0 3 0x40014200 acpi0 acpi0 19848 79557 0 0 3 0x40014200 idle1 49521 372806 0 0 3 0x14200 bored softnet 34765 347905 0 0 3 0x14200 bored systqmp 95399 246951 0 0 3 0x14200 bored systq 69410 455756 0 0 3 0x40014200 bored softclock 9549 274081 0 0 3 0x40014200 idle0 1 140532 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 14523 (syz-executor.1) thread 0xffff8000ffff47e0 (268492) exclusive rwlock vmmaplk r = 0 (0xfffffd807a47c748) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5458 #3 uvmfault_lookup+0xb9 sys/uvm/uvm_fault.c:1740 #4 uvm_fault_check+0x603 uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #4 uvm_fault_check+0x603 sys/uvm/uvm_fault.c:714 #5 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #6 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #7 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #8 recall_trap+0x8 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10226 6769K 7573K 78643K 86333 0 pcb 13 20K 25K 78643K 3956 0 rtable 151 17K 20K 78643K 5028 0 ifaddr 68 18K 19K 78643K 1524 0 sysctl 3 1K 3K 78643K 38 0 counters 48 34K 35K 78643K 474 0 ioctlops 0 0K 4K 78643K 4907 0 iov 0 0K 28K 78643K 1957 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1398 88K 88K 78643K 22401 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 187 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 16 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 45K 78643K 21248 0 sigio 0 0K 0K 78643K 134 0 proc 74 111K 111K 78643K 3002 0 subproc 52 3K 3K 78643K 901 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2165 0 in_multi 42 2K 4K 78643K 2147 0 ether_multi 1 0K 0K 78643K 278 0 mrt 2 0K 0K 78643K 468 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 253 1129K 1129K 78643K 253 0 exec 0 0K 2K 78643K 5515 0 pfkey data 0 0K 0K 78643K 72 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 595 1315K 1316K 78643K 273687 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1048 0 NDP 9 0K 1K 78643K 467 0 temp 113 4224K 4333K 78643K 144348 0 kqueue 10 14K 20K 78643K 765 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> 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 1389 0 1386 14 13 1 3 0 8 0 rtentry 112 1392 0 1341 2 0 2 2 0 8 0 unpcb 136 17389 0 17374 170 169 1 8 0 8 0 syncache 296 21 0 21 7 7 0 1 0 8 0 tcpqe 32 3 0 3 1 1 0 1 0 8 0 tcpcb 736 6821 0 6751 223 216 7 16 0 8 0 arp 120 179 0 169 1 0 1 1 0 8 0 inpcb 304 20293 0 20286 287 281 6 16 0 8 5 rttmr 72 197 0 197 11 11 0 1 0 8 0 nd6 48 335 0 325 1 0 1 1 0 8 0 pkpcb 40 56 0 56 11 11 0 1 0 8 0 kcovpl 48 69 0 65 1 0 1 1 0 8 0 ppxss 1248 60 0 60 18 18 0 1 0 8 0 pfstscr 40 13 0 13 4 4 0 1 0 8 0 pffrag 232 105 0 103 8 7 1 1 0 482 0 pffrnode 88 105 0 103 8 7 1 1 0 8 0 pffrent 40 1160 0 1158 8 7 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfrktable 1344 286 0 276 10 9 1 2 0 8 0 pftag 88 61 0 61 6 6 0 1 0 8 0 pfqueue 264 3 0 3 1 1 0 1 0 8 0 pfstitem 24 30 0 28 1 0 1 1 0 8 0 pfstkey 112 70 0 68 1 0 1 1 0 8 0 pfstate 320 47 0 45 2 1 1 2 0 8 0 pfrule 1360 763 0 694 8 2 6 6 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 4717 0 4515 46 32 14 19 0 8 0 art_table 32 4718 0 4515 5 2 3 3 0 8 0 art_node 16 1383 0 1340 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 1 1 0 1 1 0 8 0 semapl 112 14 0 5 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 29760 0 28296 92 0 92 92 0 8 0 ffsino 272 29760 0 28296 98 0 98 98 0 8 0 nchpl 144 58063 0 56462 61 0 61 61 0 8 0 uvmvnodes 80 6137 0 0 126 0 126 126 0 8 0 vnodes 224 6137 0 0 361 0 361 361 0 8 0 namei 1024 203432 0 203432 4 3 1 1 0 8 1 percpumem 16 249 0 213 1 0 1 1 0 8 0 vcpupl 2048 350 0 0 44 0 44 44 0 8 0 vmpool 560 370 0 20 26 1 25 25 0 8 0 pfiaddrpl 120 99 0 75 3 2 1 1 0 8 0 scsiplug 72 8 0 8 3 3 0 1 0 8 0 scxspl 216 177980 0 177980 41 39 2 8 0 8 2 plimitpl 152 1787 0 1776 1 0 1 1 0 8 0 sigapl 424 21315 0 21257 7 0 7 7 0 8 0 futexpl 64 183088 0 183085 3 2 1 1 0 8 0 knotepl 112 261 0 0 4 1 3 4 0 8 0 kqueuepl 216 6231 0 6215 78 75 3 7 0 8 2 pipepl 336 3688 0 3672 87 85 2 8 0 8 0 fdescpl 496 21278 0 21256 4 1 3 4 0 8 0 filepl 152 144863 0 144712 226 216 10 17 0 8 4 lockfpl 104 10624 0 10622 21 20 1 2 0 8 0 lockfspl 48 2630 0 2628 1 0 1 1 0 8 0 sessionpl 144 86 0 73 1 0 1 1 0 8 0 pgrppl 48 301 0 288 1 0 1 1 0 8 0 ucredpl 96 13071 0 13057 1 0 1 1 0 8 0 zombiepl 144 28222 0 28221 2 1 1 1 0 8 0 processpl 1064 21315 0 21257 4 0 4 4 0 8 0 procpl 672 62319 0 62250 15 8 7 8 0 8 0 srpgc 96 82 0 82 18 18 0 1 0 8 0 sosppl 168 199 0 199 35 35 0 1 0 8 0 sockpl 480 39154 0 39129 770 758 12 32 0 8 8 mcl64k 65536 52 0 0 4 1 3 3 0 8 0 mcl16k 16384 41 0 0 5 2 3 3 0 8 0 mcl12k 12288 49 0 0 2 0 2 2 0 8 0 mcl9k 9216 41 0 0 3 1 2 2 0 8 0 mcl8k 8192 33 0 0 3 0 3 3 0 8 0 mcl4k 4096 40 0 0 3 0 3 3 0 8 0 mcl2k2 2112 15 0 0 1 0 1 1 0 8 0 mcl2k 2048 731 0 0 40 4 36 38 0 8 0 mtagpl 96 1618 0 0 25 0 25 25 0 8 0 mbufpl 256 2906 0 0 146 2 144 144 0 8 0 bufpl 288 41730 0 35385 454 0 454 454 0 8 0 anonpl 24 6065493 0 6042295 381 234 147 172 0 186 0 amapchunkpl 152 681672 0 680741 175 137 38 50 0 158 0 amappl16 200 50942 0 50122 174 129 45 56 0 8 1 amappl15 192 2802 0 2802 3 3 0 1 0 8 0 amappl14 184 1710 0 1707 5 4 1 1 0 8 0 amappl13 176 3106 0 3099 1 0 1 1 0 8 0 amappl12 168 2536 0 2530 1 0 1 1 0 8 0 amappl11 160 1638 0 1623 1 0 1 1 0 8 0 amappl10 152 1676 0 1669 1 0 1 1 0 8 0 amappl9 144 3274 0 3272 1 0 1 1 0 8 0 amappl8 136 7318 0 7199 6 1 5 5 0 8 0 amappl7 128 5853 0 5838 1 0 1 1 0 8 0 amappl6 120 3422 0 3391 2 1 1 2 0 8 0 amappl5 112 17700 0 17678 1 0 1 1 0 8 0 amappl4 104 4697 0 4664 2 1 1 2 0 8 0 amappl3 96 7596 0 7572 1 0 1 1 0 8 0 amappl2 88 5965 0 5891 4 2 2 2 0 8 0 amappl1 80 395070 0 394545 13 1 12 13 0 8 0 amappl 88 270827 0 270516 8 0 8 8 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 21648 0 21275 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 21648 0 21275 3 0 3 3 0 8 0 vmmpekpl 168 143135 0 143067 5 1 4 4 0 8 0 vmmpepl 168 1964633 0 1961392 604 439 165 169 0 357 19 vmsppl 368 21647 0 21275 34 0 34 34 0 8 0 rwobjpl 56 480355 0 472197 151 35 116 117 0 8 1 pdppl 4096 43304 0 42900 469 65 404 405 0 8 0 pvpl 32 10189458 0 10167780 559 373 186 255 0 265 0 pmappl 248 21647 0 21275 25 1 24 24 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1767 0 414 39 0 39 39 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff827f3ff0) 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 intr_handler(ffff800027b9d3b0,ffff800000077500) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __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 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7fffffade0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 witness_checkorder(ffff800000e55028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000e55028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000e55018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e55000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000e55000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff800027b3b1f8) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff8000244c3510,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:225 single_thread_check_locked(ffff8000244c3510,0,0) at single_thread_check_locked+0x227 sys/kern/kern_sig.c:1958 userret(ffff8000244c3510) at userret+0x224 single_thread_check sys/kern/kern_sig.c:1999 [inline] userret(ffff8000244c3510) at userret+0x224 sys/kern/kern_sig.c:1946 syscall(ffff8000244be750) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff8000244be750) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffae60, count: -10