witness: lock_object uninitialized: 0xffff800000c2e028 Starting stack trace... witness_checkorder(ffff800000c2e028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000c2e028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000c2e018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000c2e000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000c2e000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f3a40) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002123c2a0,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff80002123c2a0,ffff80002247c910,ffff80002247c970) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80002247c9e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002247c9e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe3560, count: 249 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(ffff800000c2e028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000c2e028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000c2e018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000c2e000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000c2e000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f3a40) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002123c2a0,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff80002123c2a0,ffff80002247c910,ffff80002247c970) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80002247c9e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002247c9e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe3560, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002247c6b0 rbx 0x3 rdx 0 rcx 0 rax 0xffff80002123c2a0 r8 0xffff80002247c650 r9 0x8080808080808080 r10 0x5d743df0a4a45c6e r11 0xa8844fa5344667e0 r12 0xffff800000c2e001 r13 0xffff800000c2e028 r14 0 r15 0 rip 0xffffffff8167b298 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002247c6a0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) pid=320433 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002123cd20,0xffff80002123c7f0 process=0xffff8000211f3a40 user=0xffff800022477000, vmspace=0xfffffd8061a98d00 estcpu=36, cpticks=12, pctcpu=0.0 user=0, sys=8, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 3591 179732 87314 0 3 0x80 nanoslp syz-executor.1 3591 37201 87314 0 3 0x4000080 fsleep syz-executor.1 80435 53914 17465 0 3 0x80 nanoslp syz-executor.2 80435 69649 17465 0 3 0x4000080 fsleep syz-executor.2 80435 497713 17465 0 3 0x4000080 fsleep syz-executor.2 18900 97778 0 0 3 0x14280 nfsidl nfsio 94142 489299 0 0 3 0x14280 nfsidl nfsio 33565 27320 0 0 3 0x14280 nfsidl nfsio 68921 315914 0 0 3 0x14280 nfsidl nfsio 72159 246273 0 0 3 0x14280 nfsidl nfsio 63438 439979 0 0 3 0x14280 nfsidl nfsio 46470 326944 0 0 3 0x14280 nfsidl nfsio 68591 114833 0 0 3 0x14280 nfsidl nfsio 32559 325279 0 0 3 0x14280 nfsidl nfsio 95736 62901 0 0 3 0x14280 nfsidl nfsio 13030 429175 0 0 3 0x14280 nfsidl nfsio 37469 270106 0 0 3 0x14280 nfsidl nfsio 91527 63513 0 0 3 0x14280 nfsidl nfsio 88221 464485 0 0 3 0x14280 nfsidl nfsio 86181 216523 0 0 3 0x14280 nfsidl nfsio 50307 34670 0 0 3 0x14280 nfsidl nfsio 93558 279310 0 0 3 0x14280 nfsidl nfsio 94294 110228 0 0 3 0x14280 nfsidl nfsio 23144 179622 0 0 3 0x14280 nfsidl nfsio 2304 328637 0 0 3 0x14280 nfsidl nfsio 9270 197505 64153 0 3 0x82 nanoslp syz-executor.3 82333 188716 1 0 3 0x100083 ttyin getty 20021 60974 64153 0 3 0x82 nanoslp syz-executor.0 8614 385415 0 0 3 0x14200 acct acct 87314 252067 64153 0 3 0x82 nanoslp syz-executor.1 25295 265594 0 0 3 0x14200 bored sosplice 17465 470315 64153 0 3 0x82 nanoslp syz-executor.2 64153 2124 70792 0 3 0x82 thrsleep syz-fuzzer 64153 408442 70792 0 3 0x4000082 thrsleep syz-fuzzer 64153 254702 70792 0 3 0x4000082 thrsleep syz-fuzzer 64153 385873 70792 0 3 0x4000082 thrsleep syz-fuzzer 64153 175931 70792 0 3 0x4000082 thrsleep syz-fuzzer 64153 61894 70792 0 3 0x4000082 kqread syz-fuzzer 64153 217271 70792 0 3 0x4000082 thrsleep syz-fuzzer 64153 78297 70792 0 3 0x4000082 thrsleep syz-fuzzer 64153 168024 70792 0 3 0x4000082 thrsleep syz-fuzzer 70792 516475 48137 0 3 0x10008a sigsusp ksh 48137 332565 86920 0 3 0x9a poll sshd 86920 359838 1 0 3 0x88 poll sshd 20950 326920 62420 74 3 0x100092 bpf pflogd 62420 360600 1 0 3 0x80 netio pflogd 4138 211207 55569 73 3 0x100090 kqread syslogd 55569 188284 1 0 3 0x100082 netio syslogd 45769 140691 1 0 3 0x100080 kqread resolvd 86018 129320 50391 77 3 0x100092 kqread dhcpleased 46288 385371 50391 77 3 0x100092 kqread dhcpleased 50391 156184 1 0 3 0x80 kqread dhcpleased 97743 28423 0 0 3 0x14200 bored smr 99461 208624 0 0 3 0x14200 pgzero zerothread 25448 23767 0 0 3 0x14200 aiodoned aiodoned 89731 445094 0 0 3 0x14200 syncer update 22671 504079 0 0 3 0x14200 cleaner cleaner 36204 251863 0 0 7 0x14200 reaper 3999 347841 0 0 3 0x14200 pgdaemon pagedaemon 70826 295807 0 0 3 0x14200 bored viomb 67262 434291 0 0 3 0x40014200 acpi0 acpi0 10323 282041 0 0 3 0x40014200 idle1 68755 224319 0 0 3 0x14200 bored softnet 49984 217954 0 0 3 0x14200 bored systqmp 29183 511177 0 0 3 0x14200 bored systq 55355 210781 0 0 3 0x40014200 bored softclock 43381 324375 0 0 3 0x40014200 idle0 1 480032 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 36204 (reaper) thread 0xffff800021149260 (251863) exclusive rwlock kmmaplk r = 0 (0xffffffff828839c8) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10190 6546K 6982K 78643K 16483 0 pcb 13 11K 12K 78643K 400 0 rtable 143 16K 20K 78643K 990 0 ifaddr 67 16K 17K 78643K 453 0 sysctl 2 0K 0K 78643K 2 0 counters 50 34K 35K 78643K 198 0 ioctlops 0 0K 4K 78643K 2032 0 iov 0 0K 16K 78643K 184 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1298 82K 82K 78643K 3111 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 3 5K 9K 78643K 70 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 32 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 8 25K 49K 78643K 3244 0 sigio 0 0K 0K 78643K 74 0 proc 72 111K 111K 78643K 823 0 subproc 52 3K 3K 78643K 211 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 179 0 in_multi 43 3K 3K 78643K 397 0 ether_multi 1 0K 0K 78643K 66 0 mrt 1 0K 0K 78643K 17 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 163 731K 731K 78643K 163 0 exec 0 0K 2K 78643K 916 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 328 280K 280K 78643K 42590 0 UVM aobj 131 9K 9K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 235 0 NDP 9 0K 1K 78643K 128 0 temp 105 4206K 4271K 78643K 16681 0 kqueue 10 14K 20K 78643K 197 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 120 166 0 163 2 1 1 2 0 8 0 rtentry 112 268 0 218 2 0 2 2 0 8 0 unpcb 136 1547 0 1532 19 17 2 6 0 8 1 syncache 296 18 0 18 7 6 1 1 0 8 1 tcpqe 32 5 0 5 2 2 0 1 0 8 0 tcpcb 736 993 0 985 41 35 6 8 0 8 5 arp 120 36 0 26 1 0 1 1 0 8 0 inpcb 304 2455 0 2448 40 36 4 6 0 8 3 rttmr 72 2 0 2 1 1 0 1 0 8 0 ip6q 72 7 0 7 2 2 0 1 0 8 0 ip6af 40 21 0 21 2 2 0 1 0 8 0 nd6 48 66 0 59 1 0 1 1 0 8 0 pkpcb 40 11 0 11 3 3 0 1 0 8 0 kcovpl 48 16 0 12 1 0 1 1 0 8 0 ppxss 1248 39 0 39 5 5 0 1 0 8 0 pfstscr 40 12 0 12 2 2 0 1 0 8 0 pffrag 232 44 0 43 4 3 1 1 0 482 0 pffrnode 88 44 0 43 4 3 1 1 0 8 0 pffrent 40 343 0 342 4 3 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 36 0 27 3 2 1 2 0 8 0 pftag 88 5 0 3 2 1 1 1 0 8 0 pfstitem 24 32 0 30 1 0 1 1 0 8 0 pfstkey 112 52 0 50 1 0 1 1 0 8 0 pfstate 320 40 0 38 2 1 1 2 0 8 0 pfrule 1360 276 0 239 5 1 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1265 0 1022 23 7 16 19 0 8 0 art_table 32 1266 0 1022 4 1 3 3 0 8 0 art_node 16 267 0 222 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 30 0 20 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 5873 0 4460 89 0 89 89 0 8 0 ffsino 272 5873 0 4460 95 0 95 95 0 8 0 nchpl 144 11351 0 9742 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 38446 0 38446 5 4 1 1 0 8 1 percpumem 16 111 0 74 1 0 1 1 0 8 0 vcpupl 2048 80 0 0 10 0 10 10 0 8 0 vmpool 560 83 0 3 6 0 6 6 0 8 0 pfiaddrpl 120 18 0 4 1 0 1 1 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 39647 0 39647 13 12 1 8 0 8 1 plimitpl 152 348 0 337 1 0 1 1 0 8 0 sigapl 424 3490 0 3432 11 4 7 7 0 8 0 futexpl 64 26586 0 26583 8 7 1 1 0 8 0 knotepl 112 88 0 0 3 0 3 3 0 8 0 kqueuepl 216 719 0 713 13 10 3 4 0 8 2 pipepl 336 495 0 479 8 6 2 5 0 8 0 fdescpl 496 3434 0 3413 4 1 3 4 0 8 0 filepl 152 24425 0 24274 46 37 9 14 0 8 3 lockfpl 104 776 0 774 3 2 1 2 0 8 0 lockfspl 48 214 0 212 1 0 1 1 0 8 0 sessionpl 144 34 0 21 1 0 1 1 0 8 0 pgrppl 48 104 0 91 1 0 1 1 0 8 0 ucredpl 96 2865 0 2851 1 0 1 1 0 8 0 zombiepl 144 4365 0 4363 2 1 1 1 0 8 0 processpl 1064 3490 0 3431 5 1 4 4 0 8 0 procpl 672 9582 0 9509 14 7 7 7 0 8 0 srpgc 96 18 0 18 2 2 0 1 0 8 0 sosppl 168 33 0 33 7 7 0 1 0 8 0 sockpl 480 4188 0 4163 101 93 8 20 0 8 4 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 18 0 0 2 0 2 2 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 22 0 0 3 0 3 3 0 8 0 mcl2k2 2112 9 0 0 1 0 1 1 0 8 0 mcl2k 2048 266 0 0 23 1 22 23 0 8 0 mtagpl 96 314 0 0 5 0 5 5 0 8 0 mbufpl 256 891 0 0 43 0 43 43 0 8 0 bufpl 288 8490 0 2146 454 0 454 454 0 8 0 anonpl 24 1023437 0 1002433 297 164 133 196 0 186 4 amapchunkpl 152 109056 0 108144 103 66 37 63 0 158 1 amappl16 200 8904 0 8311 59 27 32 44 0 8 0 amappl15 192 638 0 637 1 0 1 1 0 8 0 amappl14 184 367 0 365 1 0 1 1 0 8 0 amappl13 176 115 0 112 1 0 1 1 0 8 0 amappl12 168 356 0 351 1 0 1 1 0 8 0 amappl11 160 1031 0 1015 1 0 1 1 0 8 0 amappl10 152 340 0 329 1 0 1 1 0 8 0 amappl9 144 1075 0 1070 1 0 1 1 0 8 0 amappl8 136 899 0 834 3 0 3 3 0 8 0 amappl7 128 403 0 388 1 0 1 1 0 8 0 amappl6 120 822 0 803 1 0 1 1 0 8 0 amappl5 112 3211 0 3189 1 0 1 1 0 8 0 amappl4 104 2224 0 2193 1 0 1 1 0 8 0 amappl3 96 715 0 699 1 0 1 1 0 8 0 amappl2 88 563 0 522 2 1 1 2 0 8 0 amappl1 80 65788 0 65279 15 4 11 13 0 8 0 amappl 88 41951 0 41732 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 3517 0 3415 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3517 0 3415 1 0 1 1 0 8 0 vmmpekpl 168 27663 0 27610 3 0 3 3 0 8 0 vmmpepl 168 321790 0 319469 208 102 106 133 0 357 1 vmsppl 368 3516 0 3415 10 0 10 10 0 8 0 rwobjpl 56 84823 0 77266 112 5 107 110 0 8 0 pdppl 4096 7042 0 6910 167 33 134 135 0 8 2 pvpl 32 1886658 0 1864262 456 258 198 316 0 265 11 pmappl 248 3516 0 3415 7 0 7 7 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 992 0 90 26 0 26 26 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8279bff0) 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(ffffffff8292d388) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8292d388) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff8292d388,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416 yield() at yield+0x5a sys/kern/sched_bsd.c:291 pool_get(ffffffff8292e6c8,1) at pool_get+0x199 sys/kern/subr_pool.c:591 uvm_mapent_alloc(ffffffff828839b0,0) at uvm_mapent_alloc+0x2fe sys/uvm/uvm_map.c:1773 uvm_unmap_remove(ffffffff828839b0,ffff800027bd8000,ffff800027bde000,ffff800021185ac0,0,1) at uvm_unmap_remove+0x2d7 uvm_map_clip_end sys/uvm/uvm_map.c:4815 [inline] uvm_unmap_remove(ffffffff828839b0,ffff800027bd8000,ffff800027bde000,ffff800021185ac0,0,1) at uvm_unmap_remove+0x2d7 sys/uvm/uvm_map.c:2243 uvm_unmap(ffffffff828839b0,ffff800027bd8000,ffff800027bde000) at uvm_unmap+0x92 vm_map_unlock_ln sys/uvm/uvm_map.c:5494 [inline] uvm_unmap(ffffffff828839b0,ffff800027bd8000,ffff800027bde000) at uvm_unmap+0x92 sys/uvm/uvm_map.c:2069 uvm_uarea_free(ffff800027b24fc8) at uvm_uarea_free+0x35 sys/uvm/uvm_glue.c:287 reaper(ffff800021149260) at reaper+0x158 sys/kern/kern_exit.c:451 end trace frame: 0x0, count: -13 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(ffff800000c2e028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000c2e028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000c2e018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000c2e000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000c2e000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f3a40) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002123c2a0,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff80002123c2a0,ffff80002247c910,ffff80002247c970) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80002247c9e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002247c9e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe3560, count: -9