witness: lock_object uninitialized: 0xffff800000e27028 Starting stack trace... witness_checkorder(ffff800000e27028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000e27028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000e27018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e27000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000e27000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000ffffa998) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002123c000,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff80002123c000,ffff800027959d90,ffff800027959df0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800027959e60) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027959e60) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafc0, 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(ffff800000e27028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000e27028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000e27018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e27000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000e27000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000ffffa998) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002123c000,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff80002123c000,ffff800027959d90,ffff800027959df0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800027959e60) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027959e60) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafc0, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800027959b30 rbx 0x3 rdx 0 rcx 0 rax 0xffff80002123c000 r8 0xffff800027959ad0 r9 0x8080808080808080 r10 0xb7a26161ccc2c874 r11 0x21e4befccd963995 r12 0xffff800000e27001 r13 0xffff800000e27028 r14 0 r15 0 rip 0xffffffff81410c88 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800027959b20 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=514913 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800022ccea88,0xffff8000228757c0 process=0xffff8000ffffa998 user=0xffff800027954000, vmspace=0xfffffd80718cb738 estcpu=36, cpticks=25, pctcpu=0.0 user=0, sys=7, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 56597 457822 62369 0 2 0 syz-executor.2 90119 360048 75633 0 2 0 syz-executor.0 42133 411865 29111 0 2 0 syz-executor.3 42133 408923 29111 0 2 0x4000000 syz-executor.3 62369 458541 31535 0 2 0x482 syz-executor.2 75633 222887 31535 0 2 0x482 syz-executor.0 33738 74860 0 0 3 0x14200 acct acct 53530 516551 31535 0 2 0x482 syz-executor.1 6416 93291 1 0 2 0x100083 getty 29111 241133 31535 0 2 0x482 syz-executor.3 26411 184501 0 0 3 0x14280 nfsidl nfsio 48795 174529 0 0 3 0x14280 nfsidl nfsio 73287 97974 0 0 3 0x14280 nfsidl nfsio 39012 482893 0 0 3 0x14280 nfsidl nfsio 63373 37447 0 0 3 0x14280 nfsidl nfsio 8617 518264 0 0 3 0x14280 nfsidl nfsio 14280 305925 0 0 3 0x14280 nfsidl nfsio 86741 216875 0 0 3 0x14280 nfsidl nfsio 26587 435933 0 0 3 0x14280 nfsidl nfsio 12753 492119 0 0 3 0x14280 nfsidl nfsio 55120 72892 0 0 3 0x14280 nfsidl nfsio 38877 153757 0 0 3 0x14280 nfsidl nfsio 78784 380575 0 0 3 0x14280 nfsidl nfsio 34155 40027 0 0 3 0x14280 nfsidl nfsio 62757 157651 0 0 3 0x14280 nfsidl nfsio 55012 397522 0 0 3 0x14280 nfsidl nfsio 42157 110275 0 0 3 0x14280 nfsidl nfsio 18835 41452 0 0 3 0x14280 nfsidl nfsio 59064 446241 0 0 3 0x14280 nfsidl nfsio 425 375655 0 0 3 0x14280 nfsidl nfsio 54559 294120 0 0 3 0x14200 bored sosplice 31535 110821 75315 0 3 0x82 thrsleep syz-fuzzer 31535 167819 75315 0 3 0x4000082 thrsleep syz-fuzzer 31535 359554 75315 0 3 0x4000082 thrsleep syz-fuzzer 31535 358682 75315 0 3 0x4000082 thrsleep syz-fuzzer 31535 328931 75315 0 3 0x4000082 thrsleep syz-fuzzer 31535 283050 75315 0 3 0x4000082 thrsleep syz-fuzzer 31535 504359 75315 0 3 0x4000082 thrsleep syz-fuzzer 31535 182769 75315 0 3 0x4000082 thrsleep syz-fuzzer 31535 502488 75315 0 3 0x4000082 kqread syz-fuzzer 75315 70869 17355 0 3 0x10008a sigsusp ksh 17355 316516 22933 0 3 0x9a poll sshd 22933 339854 1 0 3 0x88 poll sshd 62201 167067 83194 74 3 0x100092 bpf pflogd 83194 198484 1 0 3 0x80 netio pflogd 55463 330176 84956 73 2 0x100090 syslogd 84956 166732 1 0 3 0x100082 netio syslogd 82980 510226 1 0 3 0x100080 kqread resolvd 48860 181454 34194 77 3 0x100092 kqread dhcpleased 34559 502102 34194 77 3 0x100092 kqread dhcpleased 34194 395172 1 0 3 0x80 kqread dhcpleased 14103 251240 0 0 3 0x14200 bored smr 10174 133018 0 0 2 0x14200 zerothread 31423 269597 0 0 3 0x14200 aiodoned aiodoned 42379 129589 0 0 3 0x14200 syncer update 76795 189896 0 0 3 0x14200 cleaner cleaner 13079 97710 0 0 2 0x14200 reaper 90391 399508 0 0 3 0x14200 pgdaemon pagedaemon 70517 209665 0 0 3 0x14200 bored viomb 57165 88020 0 0 3 0x40014200 acpi0 acpi0 83112 350989 0 0 7 0x40014200 idle1 29663 202183 0 0 3 0x14200 bored softnet 48966 240982 0 0 3 0x14200 bored systqmp 4085 285234 0 0 3 0x14200 bored systq 7346 126407 0 0 3 0x40014200 bored softclock 25476 18441 0 0 3 0x40014200 idle0 1 213056 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 56597 (syz-executor.2) thread 0xffff8000228747f0 (457822) exclusive rwlock vmmaplk r = 0 (0xfffffd807673f468) #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 uvm_map_protect+0xc1 uvm_map_addr_RBT_ROOT sys/uvm/uvm_map.h:176 [inline] #3 uvm_map_protect+0xc1 uvm_map_entrybyaddr sys/uvm/uvm_map.c:568 [inline] #3 uvm_map_protect+0xc1 sys/uvm/uvm_map.c:3338 #4 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #5 Xsyscall+0x128 Process 90119 (syz-executor.0) thread 0xffff800022874d30 (360048) exclusive rwlock vmmaplk r = 0 (0xfffffd80718cb190) #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 uvm_map_protect+0xc1 uvm_map_addr_RBT_ROOT sys/uvm/uvm_map.h:176 [inline] #3 uvm_map_protect+0xc1 uvm_map_entrybyaddr sys/uvm/uvm_map.c:568 [inline] #3 uvm_map_protect+0xc1 sys/uvm/uvm_map.c:3338 #4 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #5 Xsyscall+0x128 Process 42133 (syz-executor.3) thread 0xffff800022875a50 (408923) exclusive rwlock vmmaplk r = 0 (0xfffffd80718cba30) #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 Process 13079 (reaper) thread 0xffff800021149260 (97710) exclusive rwlock kmmaplk r = 0 (0xffffffff8298b1a0) #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 uvm_unmap+0x78 sys/uvm/uvm_map.c:2068 #4 uvm_uarea_free+0x35 sys/uvm/uvm_glue.c:287 #5 reaper+0x158 sys/kern/kern_exit.c:451 #6 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10199 6561K 7524K 78643K 98769 0 pcb 13 22K 26K 78643K 3103 0 rtable 137 17K 19K 78643K 4697 0 ifaddr 63 18K 21K 78643K 1776 0 sysctl 3 1K 1K 78643K 7 0 counters 46 34K 35K 78643K 434 0 ioctlops 0 0K 4K 78643K 5714 0 iov 0 0K 28K 78643K 2299 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1448 91K 92K 78643K 24396 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 201 0 VM map 2 1K 1K 78643K 2 0 sem 10 0K 0K 78643K 76 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 49K 78643K 20696 0 sigio 1 0K 0K 78643K 347 0 proc 72 111K 111K 78643K 2369 0 subproc 52 3K 5K 78643K 625 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2607 0 in_multi 33 2K 3K 78643K 2566 0 ether_multi 1 0K 0K 78643K 619 0 mrt 2 0K 0K 78643K 97 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 4227 0 pfkey data 0 0K 0K 78643K 18 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 609 1410K 1411K 78643K 256704 0 UVM aobj 131 4K 4K 78643K 135 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1228 0 NDP 8 0K 1K 78643K 423 0 temp 105 4215K 4296K 78643K 170516 0 kqueue 10 14K 22K 78643K 739 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 2382 0 2379 25 24 1 5 0 8 0 rtentry 112 1310 0 1266 2 0 2 2 0 8 0 unpcb 136 15392 0 15377 132 130 2 8 0 8 1 syncache 296 144 0 144 30 30 0 1 0 8 0 tcpqe 32 152 0 152 18 18 0 1 0 8 0 tcpcb 736 9426 0 9419 272 270 2 14 0 8 0 arp 120 169 0 159 1 0 1 1 0 8 0 inpcb 304 23708 0 23695 293 289 4 16 0 8 2 rttmr 72 21 0 21 7 7 0 1 0 8 0 ip6q 72 3 0 3 1 1 0 1 0 8 0 ip6af 40 33 0 33 1 1 0 1 0 8 0 nd6 48 288 0 283 1 0 1 1 0 8 0 pkpcb 40 92 0 92 12 12 0 1 0 8 0 kcovpl 48 45 0 41 1 0 1 1 0 8 0 ppxss 1248 38 0 38 9 9 0 1 0 8 0 pfstscr 40 5 0 5 1 1 0 1 0 8 0 pffrag 232 119 0 118 13 12 1 1 0 482 0 pffrnode 88 116 0 115 13 12 1 1 0 8 0 pffrent 40 1122 0 1121 14 13 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 pfrktable 1344 407 0 397 3 2 1 2 0 8 0 pftag 88 15 0 12 1 0 1 1 0 8 0 pfqueue 264 4 0 4 1 1 0 1 0 8 0 pfstitem 24 135 0 133 1 0 1 1 0 8 0 pfstkey 112 277 0 275 3 2 1 2 0 8 0 pfstate 320 204 0 202 5 4 1 5 0 8 0 pfrule 1360 724 0 686 5 1 4 4 0 8 0 art_heap8 4096 3 0 1 3 1 2 2 0 8 0 art_heap4 256 5511 0 5324 32 15 17 19 0 8 0 art_table 32 5514 0 5325 3 1 2 3 0 8 0 art_node 16 1266 0 1228 1 0 1 1 0 8 0 sysvmsgpl 40 50 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 74 0 66 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 29445 0 28008 91 0 91 91 0 8 0 ffsino 272 29445 0 28008 97 0 97 97 0 8 0 nchpl 144 56463 0 54857 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 205387 0 205387 2 1 1 1 0 8 1 percpumem 16 229 0 194 1 0 1 1 0 8 0 vcpupl 2048 427 0 0 54 0 54 54 0 8 0 vmpool 560 460 0 33 34 3 31 31 0 8 0 pfiaddrpl 120 106 0 88 2 1 1 1 0 8 0 scsiplug 72 12 0 12 4 4 0 1 0 8 0 scxspl 216 169890 0 169890 23 22 1 8 0 8 1 plimitpl 152 1814 0 1803 1 0 1 1 0 8 0 sigapl 424 20847 0 20788 7 0 7 7 0 8 0 futexpl 64 213394 0 213394 2 1 1 1 0 8 1 knotepl 112 156 0 0 3 0 3 3 0 8 0 kqueuepl 216 6877 0 6871 137 136 1 8 0 8 0 pipepl 336 4355 0 4339 128 126 2 7 0 8 0 fdescpl 496 20805 0 20783 4 1 3 4 0 8 0 filepl 152 153212 0 153062 271 263 8 21 0 8 1 lockfpl 104 4634 0 4632 7 6 1 2 0 8 0 lockfspl 48 1631 0 1629 1 0 1 1 0 8 0 sessionpl 144 63 0 50 1 0 1 1 0 8 0 pgrppl 48 125 0 112 1 0 1 1 0 8 0 ucredpl 96 18567 0 18555 1 0 1 1 0 8 0 zombiepl 144 24750 0 24749 3 2 1 1 0 8 0 processpl 1064 20847 0 20788 5 1 4 5 0 8 0 procpl 672 53171 0 53102 25 18 7 8 0 8 0 srpgc 96 42 0 42 9 9 0 1 0 8 0 sosppl 168 216 0 216 38 38 0 1 0 8 0 sockpl 480 41609 0 41581 833 823 10 44 0 8 5 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 9 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 19 0 0 3 0 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 550 0 0 27 4 23 27 0 8 0 mtagpl 96 1835 0 0 25 0 25 25 0 8 0 mbufpl 256 18961 0 0 1123 0 1123 1123 0 8 0 bufpl 288 41305 0 34961 454 0 454 454 0 8 0 anonpl 24 5379219 0 5353553 459 295 164 221 0 186 0 amapchunkpl 152 631227 0 630359 193 158 35 61 0 158 0 amappl16 200 53130 0 52079 202 146 56 67 0 8 0 amappl15 192 2563 0 2562 1 0 1 1 0 8 0 amappl14 184 1039 0 1034 1 0 1 1 0 8 0 amappl13 176 6436 0 6432 1 0 1 1 0 8 0 amappl12 168 2141 0 2135 1 0 1 1 0 8 0 amappl11 160 3309 0 3293 1 0 1 1 0 8 0 amappl10 152 2952 0 2942 1 0 1 1 0 8 0 amappl9 144 641 0 636 1 0 1 1 0 8 0 amappl8 136 3871 0 3757 6 1 5 5 0 8 0 amappl7 128 2679 0 2668 1 0 1 1 0 8 0 amappl6 120 581 0 566 1 0 1 1 0 8 0 amappl5 112 15827 0 15804 1 0 1 1 0 8 0 amappl4 104 7253 0 7221 1 0 1 1 0 8 0 amappl3 96 8219 0 8196 1 0 1 1 0 8 0 amappl2 88 9577 0 9500 5 3 2 2 0 8 0 amappl1 80 366252 0 365734 13 1 12 13 0 8 0 amappl 88 254963 0 254652 9 1 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 72 134 0 4 3 0 3 3 0 8 0 uaddrrnd 24 21265 0 20815 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 21265 0 20815 3 0 3 3 0 8 0 vmmpekpl 168 126380 0 126300 6 2 4 4 0 8 0 vmmpepl 168 1866027 0 1862279 710 545 165 188 0 357 0 vmsppl 368 21264 0 20815 43 2 41 41 0 8 0 rwobjpl 56 439599 0 431426 145 28 117 119 0 8 0 pdppl 4096 42538 0 42057 564 83 481 481 0 8 0 pvpl 32 9143088 0 9120002 667 466 201 311 0 265 0 pmappl 248 21264 0 20815 31 2 29 29 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 2912 0 505 70 0 70 70 0 8 1 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(ffff800000e27028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000e27028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000e27018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000e27000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000e27000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000ffffa998) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002123c000,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff80002123c000,ffff800027959d90,ffff800027959df0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800027959e60) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027959e60) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffafc0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> tc No such command