witness: lock_object uninitialized: 0xffff800000d49028 Starting stack trace... witness_checkorder(ffff800000d49028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000d49028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000d49018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000d49000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000d49000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f29a0) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800021236a80,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800021236a80,ffff800027c24460,ffff800027c244c0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800027c24530) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027c24530) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe6190, 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(ffff800000d49028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000d49028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000d49018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000d49000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000d49000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f29a0) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800021236a80,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800021236a80,ffff800027c24460,ffff800027c244c0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800027c24530) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027c24530) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe6190, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800027c24200 rbx 0x3 rdx 0 rcx 0 rax 0xffff800021236a80 r8 0xffff800027c241a0 r9 0x8080808080808080 r10 0x780c921d08c91736 r11 0x1ec72d072212fb42 r12 0xffff800000d49001 r13 0xffff800000d49028 r14 0 r15 0 rip 0xffffffff81410c88 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800027c241f0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.2) pid=2648 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=73, nice=20 forw=0xffffffffffffffff, list=0xffff800021236d20,0xffff8000212367f0 process=0xffff8000211f29a0 user=0xffff800027c1f000, vmspace=0xfffffd8065840ba8 estcpu=23, cpticks=8, pctcpu=0.17 user=0, sys=7, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 82389 91196 45310 0 2 0x480 syz-executor.0 82389 282336 45310 0 3 0x4000080 netcon syz-executor.0 82389 93530 45310 0 3 0x4000080 fsleep syz-executor.0 8785 297069 44306 0 2 0x482 syz-executor.3 68299 389079 44306 0 2 0x482 syz-executor.2 97568 105774 44306 0 3 0x82 piperd syz-executor.1 45310 205440 44306 0 2 0x482 syz-executor.0 64578 355602 0 0 3 0x14280 nfsidl nfsio 68426 319726 0 0 3 0x14280 nfsidl nfsio 84691 322947 0 0 3 0x14280 nfsidl nfsio 52214 463971 0 0 3 0x14280 nfsidl nfsio 54195 16061 0 0 3 0x14280 nfsidl nfsio 53976 93240 0 0 3 0x14280 nfsidl nfsio 78006 441416 0 0 3 0x14280 nfsidl nfsio 84187 314968 0 0 3 0x14280 nfsidl nfsio 69290 224542 0 0 3 0x14280 nfsidl nfsio 29652 449761 0 0 3 0x14280 nfsidl nfsio 32156 194995 0 0 3 0x14280 nfsidl nfsio 63529 68478 0 0 3 0x14280 nfsidl nfsio 6603 390720 0 0 3 0x14280 nfsidl nfsio 69852 334284 0 0 3 0x14280 nfsidl nfsio 63037 117706 0 0 3 0x14280 nfsidl nfsio 25119 435288 0 0 3 0x14280 nfsidl nfsio 75416 407554 0 0 3 0x14280 nfsidl nfsio 9769 72907 0 0 3 0x14280 nfsidl nfsio 76843 153834 0 0 3 0x14280 nfsidl nfsio 23287 413294 0 0 3 0x14280 nfsidl nfsio 12200 262216 1 0 2 0x100083 getty 357 129300 0 0 3 0x14200 bored sosplice 44306 253834 47997 0 3 0x82 thrsleep syz-fuzzer 44306 383829 47997 0 3 0x4000082 thrsleep syz-fuzzer 44306 225473 47997 0 3 0x4000082 thrsleep syz-fuzzer 44306 201941 47997 0 3 0x4000082 thrsleep syz-fuzzer 44306 247917 47997 0 3 0x4000082 thrsleep syz-fuzzer 44306 366523 47997 0 3 0x4000082 thrsleep syz-fuzzer 44306 474627 47997 0 3 0x4000082 thrsleep syz-fuzzer 44306 453141 47997 0 3 0x4000082 kqread syz-fuzzer 47997 142674 92186 0 3 0x10008a sigsusp ksh 92186 115144 97654 0 3 0x9a poll sshd 97654 290004 1 0 3 0x88 poll sshd 58996 81234 90437 74 3 0x100092 bpf pflogd 90437 349386 1 0 3 0x80 netio pflogd 92837 161876 53117 73 2 0x100090 syslogd 53117 137053 1 0 3 0x100082 netio syslogd 6720 31355 1 0 3 0x100080 kqread resolvd 46344 380335 7160 77 3 0x100092 kqread dhcpleased 73089 492901 7160 77 3 0x100092 kqread dhcpleased 7160 465883 1 0 3 0x80 kqread dhcpleased 74103 211157 0 0 3 0x14200 bored smr 15761 178219 0 0 3 0x14200 pgzero zerothread 32105 36701 0 0 3 0x14200 aiodoned aiodoned 14543 399106 0 0 3 0x14200 syncer update 97986 40283 0 0 3 0x14200 cleaner cleaner 52806 299967 0 0 3 0x14200 reaper reaper 75503 460061 0 0 3 0x14200 pgdaemon pagedaemon 34619 355744 0 0 3 0x14200 bored viomb 51337 146412 0 0 3 0x40014200 acpi0 acpi0 25168 347382 0 0 7 0x40014200 idle1 76003 200708 0 0 3 0x14200 bored softnet 30304 463737 0 0 3 0x14200 bored systqmp 56289 176306 0 0 3 0x14200 bored systq 4463 108963 0 0 2 0x40014200 softclock 31003 400829 0 0 3 0x40014200 idle0 1 86602 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 10201 6563K 7139K 78643K 43650 0 pcb 13 18K 20K 78643K 1163 0 rtable 169 11K 12K 78643K 1706 0 ifaddr 69 16K 18K 78643K 624 0 sysctl 2 0K 0K 78643K 2 0 counters 48 34K 35K 78643K 222 0 ioctlops 0 0K 6K 78643K 2995 0 iov 0 0K 24K 78643K 1720 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1352 85K 85K 78643K 10479 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 46 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 2203 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 8 25K 45K 78643K 10040 0 sigio 0 0K 0K 78643K 522 0 proc 72 111K 112K 78643K 1405 0 subproc 52 3K 3K 78643K 403 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 226 0 in_multi 51 3K 3K 78643K 655 0 ether_multi 1 0K 0K 78643K 105 0 mrt 1 0K 0K 78643K 21 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 1940 0 pfkey data 0 0K 0K 78643K 7 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 467 734K 734K 78643K 130272 0 UVM aobj 7 2K 2K 78643K 7 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 444 0 NDP 9 0K 1K 78643K 176 0 temp 104 4206K 4286K 78643K 85579 0 kqueue 10 14K 21K 78643K 271 0 SYN cache 2 8K 16K 78643K 3 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 120 681 0 678 8 7 1 3 0 8 0 rtentry 112 465 0 405 2 0 2 2 0 8 0 unpcb 136 13897 0 13882 79 78 1 8 0 8 0 syncache 296 31 0 31 7 7 0 1 0 8 0 tcpqe 32 6 0 6 2 2 0 1 0 8 0 tcpcb 736 2572 0 2566 101 100 1 19 0 8 0 arp 120 72 0 62 1 0 1 1 0 8 0 inpcb 304 9928 0 9920 162 161 1 20 0 8 0 rttmr 72 3 0 3 1 1 0 1 0 8 0 ip6q 72 4 0 4 1 1 0 1 0 8 0 ip6af 40 12 0 12 1 1 0 1 0 8 0 nd6 48 116 0 104 1 0 1 1 0 8 0 pkpcb 40 201 0 201 8 8 0 1 0 8 0 kcovpl 48 31 0 27 1 0 1 1 0 8 0 ppxss 1248 18 0 18 5 5 0 1 0 8 0 pffrag 232 74 0 73 6 5 1 1 0 482 0 pffrnode 88 72 0 71 6 5 1 1 0 8 0 pffrent 40 550 0 549 7 6 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 149 0 137 4 2 2 2 0 8 0 pftag 88 20 0 19 4 3 1 1 0 8 0 pfstitem 24 41 0 39 1 0 1 1 0 8 0 pfstkey 112 41 0 39 1 0 1 1 0 8 0 pfstate 320 41 0 39 3 2 1 2 0 8 0 pfrule 1360 478 0 449 4 1 3 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1912 0 1630 25 7 18 19 0 8 0 art_table 32 1913 0 1630 3 0 3 3 0 8 0 art_node 16 457 0 405 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 15 1 0 1 1 0 8 0 semupl 112 9 0 9 1 1 0 1 0 8 0 semapl 112 2201 0 2191 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 13713 0 12292 90 0 90 90 0 8 0 ffsino 272 13713 0 12292 95 0 95 95 0 8 0 nchpl 144 26336 0 24738 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 87906 0 87906 6 5 1 3 0 8 1 percpumem 16 123 0 87 1 0 1 1 0 8 0 vcpupl 2048 285 0 0 36 0 36 36 0 8 0 vmpool 560 294 0 9 22 1 21 21 0 8 0 pfiaddrpl 120 53 0 41 1 0 1 1 0 8 0 scsiplug 72 4 0 4 2 2 0 1 0 8 0 scxspl 216 77093 0 77093 19 18 1 8 0 8 1 plimitpl 152 763 0 752 1 0 1 1 0 8 0 sigapl 424 10221 0 10164 7 0 7 7 0 8 0 futexpl 64 100909 0 100908 3 2 1 1 0 8 0 knotepl 112 139 0 0 3 0 3 3 0 8 0 kqueuepl 216 1381 0 1370 30 29 1 5 0 8 0 pipepl 336 1871 0 1855 58 56 2 7 0 8 0 fdescpl 496 10184 0 10163 4 1 3 4 0 8 0 filepl 152 68368 0 68212 133 124 9 19 0 8 2 lockfpl 104 2290 0 2288 5 4 1 2 0 8 0 lockfspl 48 727 0 725 1 0 1 1 0 8 0 sessionpl 144 48 0 35 1 0 1 1 0 8 0 pgrppl 48 56 0 43 1 0 1 1 0 8 0 ucredpl 96 8279 0 8267 1 0 1 1 0 8 0 zombiepl 144 15964 0 15962 3 2 1 1 0 8 0 processpl 1064 10221 0 10164 4 0 4 4 0 8 0 procpl 672 29311 0 29245 8 1 7 7 0 8 0 srpgc 96 30 0 30 5 5 0 1 0 8 0 sosppl 168 80 0 80 16 16 0 1 0 8 0 sockpl 480 24763 0 24737 522 515 7 36 0 8 3 mcl64k 65536 60 0 0 4 1 3 3 0 8 0 mcl16k 16384 23 0 0 3 1 2 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 41 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 393 0 0 24 6 18 24 0 8 0 mtagpl 96 1366 0 0 25 0 25 25 0 8 0 mbufpl 256 4515 0 0 250 0 250 250 0 8 0 bufpl 288 19845 0 13500 455 1 454 454 0 8 0 anonpl 24 2910779 0 2891300 233 101 132 151 0 186 0 amapchunkpl 152 320932 0 320061 83 47 36 50 0 158 0 amappl16 200 25379 0 24726 129 94 35 46 0 8 0 amappl15 192 1271 0 1268 1 0 1 1 0 8 0 amappl14 184 1779 0 1779 2 2 0 1 0 8 0 amappl13 176 1142 0 1138 1 0 1 1 0 8 0 amappl12 168 2932 0 2930 1 0 1 1 0 8 0 amappl11 160 553 0 536 1 0 1 1 0 8 0 amappl10 152 1361 0 1351 1 0 1 1 0 8 0 amappl9 144 626 0 623 1 0 1 1 0 8 0 amappl8 136 2436 0 2340 4 0 4 4 0 8 0 amappl7 128 1618 0 1605 1 0 1 1 0 8 0 amappl6 120 468 0 447 1 0 1 1 0 8 0 amappl5 112 9231 0 9211 1 0 1 1 0 8 0 amappl4 104 2443 0 2416 1 0 1 1 0 8 0 amappl3 96 5275 0 5258 1 0 1 1 0 8 0 amappl2 88 3979 0 3923 3 1 2 2 0 8 0 amappl1 80 189578 0 189061 14 2 12 13 0 8 0 amappl 88 129221 0 128943 7 0 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 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 10478 0 10171 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10478 0 10171 2 0 2 2 0 8 0 vmmpekpl 168 78140 0 78068 4 0 4 4 0 8 0 vmmpepl 168 936308 0 933345 357 210 147 154 0 357 14 vmsppl 368 10477 0 10171 28 0 28 28 0 8 0 rwobjpl 56 234571 0 226996 122 14 108 110 0 8 0 pdppl 4096 20964 0 20627 395 56 339 340 0 8 2 pvpl 32 4770932 0 4749730 373 184 189 221 0 265 0 pmappl 248 10477 0 10171 20 0 20 20 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1587 0 236 39 0 39 39 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(ffff800000d49028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000d49028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000d49018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000d49000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000d49000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f29a0) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800021236a80,0,0,1) at exit1+0x3d5 sys/kern/kern_exit.c:225 sys_exit(ffff800021236a80,ffff800027c24460,ffff800027c244c0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800027c24530) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800027c24530) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe6190, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp