witness: lock_object uninitialized: 0xffff800000d1d028 Starting stack trace... witness_checkorder(ffff800000d1d028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000d1d028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000d1d018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000d1d000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000d1d000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff800027b3e9a8) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002227e7e0,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff80002227e7e0,ffff800022aed490,ffff800022aed4f0) at ^Msys_exit+0x16 syscall(ffff800022aed560) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022aed560) 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(ffff800000d1d028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000d1d028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000d1d018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000d1d000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000d1d000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff800027b3e9a8) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002227e7e0,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff80002227e7e0,ffff800022aed490,ffff800022aed4f0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022aed560) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022aed560) 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 0xffff800022aed230 rbx 0x3 rdx 0 rcx 0 rax 0xffff80002227e7e0 r8 0xffff800022aed1d0 r9 0x8080808080808080 r10 0xc713ad583e93ab63 r11 0x7c7a04b7fa4caea0 r12 0xffff800000d1d001 r13 0xffff800000d1d028 r14 0 r15 0 rip 0xffffffff8167b298 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800022aed220 ss 0 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.2) pid=308720 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800022c9a540,0xffff80002227e550 process=0xffff800027b3e9a8 user=0xffff800022ae8000, vmspace=0xfffffd80662e8760 estcpu=36, cpticks=10, pctcpu=0.0 user=0, sys=8, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 30445 245872 14751 0 2 0 syz-executor.3 30445 122558 14751 0 2 0x4000000 syz-executor.3 59159 516128 72946 0 2 0 syz-executor.0 59159 39461 72946 0 7 0x4000000 syz-executor.0 14751 146983 42465 0 2 0x482 syz-executor.3 72946 334519 42465 0 2 0x482 syz-executor.0 86989 261422 42465 0 2 0x2 syz-executor.1 96177 7761 42465 0 2 0x482 syz-executor.2 54893 1591 0 0 3 0x14280 nfsidl nfsio 33567 229299 0 0 3 0x14280 nfsidl nfsio 72586 445826 0 0 3 0x14280 nfsidl nfsio 626 71960 0 0 3 0x14280 nfsidl nfsio 48768 274336 0 0 3 0x14280 nfsidl nfsio 55944 216059 0 0 3 0x14280 nfsidl nfsio 11478 445142 0 0 3 0x14280 nfsidl nfsio 73521 49796 0 0 3 0x14280 nfsidl nfsio 83517 307054 0 0 3 0x14280 nfsidl nfsio 58575 93095 0 0 3 0x14280 nfsidl nfsio 55355 317246 0 0 3 0x14280 nfsidl nfsio 45503 173324 0 0 3 0x14280 nfsidl nfsio 38225 491664 0 0 3 0x14280 nfsidl nfsio 76882 439689 0 0 3 0x14280 nfsidl nfsio 46242 116321 0 0 3 0x14280 nfsidl nfsio 12282 72010 0 0 3 0x14280 nfsidl nfsio 66259 386630 0 0 3 0x14280 nfsidl nfsio 94245 399369 0 0 3 0x14280 nfsidl nfsio 74912 31760 0 0 3 0x14280 nfsidl nfsio 39849 55609 0 0 3 0x14280 nfsidl nfsio 49233 329921 1 0 3 0x100083 ttyin getty 49117 85795 0 0 3 0x14200 bored sosplice 42465 172183 77814 0 3 0x82 thrsleep syz-fuzzer 42465 383385 77814 0 2 0x4000482 syz-fuzzer 42465 412627 77814 0 3 0x4000082 kqread syz-fuzzer 42465 91183 77814 0 3 0x4000082 thrsleep syz-fuzzer 42465 346212 77814 0 3 0x4000082 thrsleep syz-fuzzer 42465 262350 77814 0 3 0x4000082 thrsleep syz-fuzzer 42465 193543 77814 0 3 0x4000082 thrsleep syz-fuzzer 42465 127814 77814 0 3 0x4000082 thrsleep syz-fuzzer 77814 117287 37653 0 3 0x10008a sigsusp ksh 37653 389691 49275 0 3 0x9a poll sshd 49275 359886 1 0 3 0x88 poll sshd 29017 261131 51038 74 2 0x100492 pflogd 51038 282488 1 0 3 0x80 netio pflogd 94007 153834 31924 73 2 0x100090 syslogd 31924 109078 1 0 3 0x100082 netio syslogd 76566 472072 1 0 3 0x100080 kqread resolvd 28715 457116 52776 77 3 0x100092 kqread dhcpleased 6757 389127 52776 77 3 0x100092 kqread dhcpleased 52776 98692 1 0 3 0x80 kqread dhcpleased 10487 360889 0 0 3 0x14200 bored smr 31156 205534 0 0 3 0x14200 pgzero zerothread 23980 491065 0 0 3 0x14200 aiodoned aiodoned 67085 402695 0 0 2 0x14600 update 73894 250071 0 0 3 0x14200 cleaner cleaner 20180 30066 0 0 2 0x14200 reaper 29019 152267 0 0 3 0x14200 pgdaemon pagedaemon 57593 73204 0 0 3 0x14200 bored viomb 78292 75092 0 0 3 0x40014200 acpi0 acpi0 61859 415977 0 0 3 0x40014200 idle1 78295 310268 0 0 3 0x14200 bored softnet 39445 161561 0 0 2 0x14200 systqmp 12089 246640 0 0 2 0x14200 systq 46291 118895 0 0 2 0x40014200 softclock 49063 141388 0 0 3 0x40014200 idle0 1 202714 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 86989 (syz-executor.1) thread 0xffff8000246da548 (261422) exclusive rrwlock inode r = 0 (0xfffffd80794e1c50) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3100 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8067106708) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3085 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 Process 20180 (reaper) thread 0xffff800021149260 (30066) 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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10201 6488K 7300K 78643K 22548 0 pcb 13 18K 23K 78643K 6823 0 rtable 142 16K 19K 78643K 2215 0 ifaddr 72 19K 21K 78643K 971 0 sysctl 3 1K 1K 78643K 3 0 counters 48 34K 35K 78643K 360 0 ioctlops 0 0K 5K 78643K 4159 0 iov 0 0K 16K 78643K 697 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1434 90K 90K 78643K 5726 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 3 5K 9K 78643K 113 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1260 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 8 25K 45K 78643K 15452 0 sigio 0 0K 0K 78643K 124 0 proc 76 111K 111K 78643K 1647 0 subproc 52 3K 3K 78643K 492 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1512 0 in_multi 44 2K 4K 78643K 1416 0 ether_multi 1 0K 0K 78643K 441 0 mrt 2 0K 0K 78643K 12 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 247 1102K 1102K 78643K 247 0 exec 0 0K 2K 78643K 2287 0 pfkey data 0 0K 0K 78643K 6 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 404 492K 4453K 78643K 201945 0 UVM aobj 131 7K 7K 78643K 141 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 3030 0 NDP 9 0K 1K 78643K 254 0 temp 115 4228K 4308K 78643K 161469 0 kqueue 10 14K 20K 78643K 903 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 120 629 0 626 8 7 1 3 0 8 0 rtentry 112 490 0 441 2 0 2 2 0 8 0 unpcb 136 7862 0 7847 70 69 1 6 0 8 0 syncache 296 26 0 26 7 7 0 1 0 8 0 tcpqe 32 61 0 61 3 3 0 1 0 8 0 tcpcb 736 6654 0 6648 151 147 4 19 0 8 3 arp 120 78 0 70 1 0 1 1 0 8 0 inpcb 304 20554 0 20547 186 182 4 16 0 8 3 rttmr 72 7 0 7 2 2 0 1 0 8 0 nd6 48 130 0 120 1 0 1 1 0 8 0 pkpcb 40 809 0 809 6 6 0 1 0 8 0 kcovpl 48 37 0 33 1 0 1 1 0 8 0 ppxss 1248 88 0 88 13 13 0 1 0 8 0 pfstscr 40 7 0 7 2 2 0 1 0 8 0 pffrag 232 35 0 33 6 5 1 1 0 482 0 pffrnode 88 34 0 32 6 5 1 1 0 8 0 pffrent 40 269 0 267 7 6 1 1 0 8 0 pfosfp 40 1431 0 1007 5 0 5 5 0 8 0 pfosfpen 112 1431 0 716 21 0 21 21 0 8 0 pfrktable 1344 176 0 168 8 7 1 2 0 8 0 pftag 88 41 0 39 4 3 1 1 0 8 0 pfqueue 264 3 0 3 1 1 0 1 0 8 0 pfstitem 24 171 0 169 1 0 1 1 0 8 0 pfstkey 112 177 0 175 1 0 1 1 0 8 0 pfstate 320 173 0 171 5 4 1 3 0 8 0 pfrule 1360 1053 0 990 10 4 6 6 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2290 0 2110 35 23 12 20 0 8 0 art_table 32 2291 0 2110 3 0 3 3 0 8 0 art_node 16 488 0 448 1 0 1 1 0 8 0 sysvmsgpl 40 41 0 1 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 1258 0 1248 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 22061 0 20604 92 0 92 92 0 8 0 ffsino 272 22061 0 20604 99 1 98 98 0 8 0 nchpl 144 43380 0 41779 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 141073 0 141072 3 2 1 1 0 8 0 percpumem 16 192 0 156 1 0 1 1 0 8 0 vcpupl 2048 125 0 1 16 0 16 16 0 8 0 vmpool 560 132 0 8 10 1 9 9 0 8 0 pfiaddrpl 120 62 0 54 4 3 1 1 0 8 0 scsiplug 72 5 0 5 2 2 0 1 0 8 0 scxspl 216 121778 0 121778 26 25 1 8 0 8 1 plimitpl 152 1892 0 1881 1 0 1 1 0 8 0 sigapl 424 15616 0 15559 7 0 7 7 0 8 0 futexpl 64 126335 0 126335 2 1 1 1 0 8 1 knotepl 112 183 0 0 3 0 3 3 0 8 0 kqueuepl 216 3193 0 3187 49 46 3 5 0 8 2 pipepl 336 2314 0 2298 56 54 2 9 0 8 0 fdescpl 496 15578 0 15557 5 2 3 4 0 8 0 filepl 152 101273 0 101122 161 152 9 16 0 8 3 lockfpl 104 2574 0 2572 6 5 1 2 0 8 0 lockfspl 48 708 0 706 1 0 1 1 0 8 0 sessionpl 144 54 0 41 1 0 1 1 0 8 0 pgrppl 48 212 0 199 1 0 1 1 0 8 0 ucredpl 96 12664 0 12649 1 0 1 1 0 8 0 zombiepl 144 16541 0 16540 2 1 1 1 0 8 0 processpl 1064 15616 0 15559 4 0 4 4 0 8 0 procpl 672 42938 0 42871 25 18 7 8 0 8 0 srpgc 96 32 0 32 8 8 0 1 0 8 0 sosppl 168 76 0 76 16 16 0 1 0 8 0 sockpl 480 29869 0 29844 448 440 8 29 0 8 4 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 23 0 0 3 1 2 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 33 0 0 3 0 3 3 0 8 0 mcl4k 4096 49 0 0 4 1 3 3 0 8 0 mcl2k2 2112 12 0 0 1 0 1 1 0 8 0 mcl2k 2048 376 0 0 19 4 15 19 0 8 0 mtagpl 96 565 0 0 8 1 7 7 0 8 0 mbufpl 256 1524 0 0 82 0 82 82 0 8 0 bufpl 288 27705 0 21360 454 0 454 454 0 8 0 anonpl 24 4309456 0 4292606 234 112 122 144 0 186 0 amapchunkpl 152 547462 0 546708 2283 2249 34 2226 0 158 0 amappl16 200 36853 0 36256 130 97 33 52 0 8 0 amappl15 192 2451 0 2450 1 0 1 1 0 8 0 amappl14 184 1038 0 1034 1 0 1 1 0 8 0 amappl13 176 1205 0 1203 1 0 1 1 0 8 0 amappl12 168 1549 0 1543 1 0 1 1 0 8 0 amappl11 160 639 0 622 1 0 1 1 0 8 0 amappl10 152 4896 0 4885 1 0 1 1 0 8 0 amappl9 144 528 0 526 1 0 1 1 0 8 0 amappl8 136 4894 0 4801 4 0 4 4 0 8 0 amappl7 128 3950 0 3937 1 0 1 1 0 8 0 amappl6 120 403 0 383 1 0 1 1 0 8 0 amappl5 112 18956 0 18934 1 0 1 1 0 8 0 amappl4 104 2156 0 2125 1 0 1 1 0 8 0 amappl3 96 2405 0 2388 1 0 1 1 0 8 0 amappl2 88 3220 0 3170 4 2 2 2 0 8 0 amappl1 80 275433 0 274939 13 1 12 13 0 8 0 amappl 88 200733 0 200488 8 1 7 7 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 15710 0 15564 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 15710 0 15564 1 0 1 1 0 8 0 vmmpekpl 168 101520 0 101458 3 0 3 3 0 8 0 vmmpepl 168 1408381 0 1405949 403 272 131 131 0 357 18 vmsppl 368 15709 0 15564 14 0 14 14 0 8 0 rwobjpl 56 338943 0 331349 122 12 110 111 0 8 0 pdppl 4096 31428 0 31252 226 48 178 180 0 8 2 pvpl 32 7181705 0 7161607 388 200 188 252 0 265 0 pmappl 248 15709 0 15564 10 0 10 10 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1277 0 287 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(ffff800000d1d028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000d1d028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000d1d018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000d1d000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000d1d000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff800027b3e9a8) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002227e7e0,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff80002227e7e0,ffff800022aed490,ffff800022aed4f0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800022aed560) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800022aed560) 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}> 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(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 syscall(ffff800022af3550) at syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800022af3550) at syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb1fd1f3e90, count: -6