witness: lock_object uninitialized: 0xffff800000f55028 Starting stack trace... witness_checkorder(ffff800000f55028,9,0) at witness_checkorder+0x13b witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800000f55028,9,0) at witness_checkorder+0x13b sys/kern/subr_witness.c:777 rw_enter_write(ffff800000f55018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000f55000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003741cd78) at unveil_destroy+0x9d sys/kern/kern_unveil.c:183 exit1(ffff80002bc82558,0,0,1) at exit1+0x3ef sys/kern/kern_exit.c:218 sys_exit(ffff80002bc82558,ffff800030cf4ce0,ffff800030cf4c40) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800030cf4ce0) at syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff800030cf4ce0) at syscall+0x53b sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c266259e7c0, count: 249 End of stack trace. Stopped at db_enter+0x1c: 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+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800000f55028,9,0) at witness_checkorder+0x140 rw_enter_write(ffff800000f55018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000f55000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003741cd78) at unveil_destroy+0x9d sys/kern/kern_unveil.c:183 exit1(ffff80002bc82558,0,0,1) at exit1+0x3ef sys/kern/kern_exit.c:218 sys_exit(ffff80002bc82558,ffff800030cf4ce0,ffff800030cf4c40) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800030cf4ce0) at syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff800030cf4ce0) at syscall+0x53b sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c266259e7c0, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800030cf49a0 rbx 0 rdx 0 rcx 0xffff80002bc82558 rax 0xffffffff82cc1ff0 cpu_info_full_primary+0x1ff0 r8 0xffff800030cf4940 r9 0x8080808080808080 r10 0x77aa8d5a68467524 r11 0x81ef5fae520b6d7b r12 0 r13 0x1 r14 0xffff800000f55028 r15 0x3 rip 0xffffffff826c18ec db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff800030cf4990 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.5) tid=99635 pid=77509 tcnt=1 stat=onproc flags process=1018 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002bc82558 forw=0xffffffffffffffff, list=0xffff80002a17dd68,0xffff80002a1e2000 process=0xffff80003741cd78 user=0xffff800030cef000, vmspace=0xfffffd8076d8c8e8 estcpu=36, cpticks=18, pctcpu=0.10, user=0, sys=7, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 11420 265984 68730 0 2 0 syz-executor.0 48158 131916 88826 0 2 0 syz-executor.4 27673 142184 4021 0 2 0 syz-executor.6 27673 7226 4021 0 2 0x4000000 syz-executor.6 81307 319435 24678 0 2 0 syz-executor.1 81307 333770 24678 0 2 0x4000000 syz-executor.1 81307 305392 24678 0 3 0x4000080 fsleep syz-executor.1 46671 424504 29693 0 2 0 syz-executor.7 46671 291918 29693 0 2 0x4000000 syz-executor.7 46671 375827 29693 0 2 0x4000080 syz-executor.7 46671 11505 29693 0 3 0x4000080 fsleep syz-executor.7 29693 107139 42782 0 2 0x482 syz-executor.7 4021 112139 42782 0 2 0x482 syz-executor.6 88826 267647 42782 0 2 0x482 syz-executor.4 68730 304272 42782 0 2 0x482 syz-executor.0 4532 291895 42782 0 2 0x2 syz-executor.3 52930 484920 1 0 2 0x18100083 getty 1103 217622 42782 0 2 0x2 syz-executor.2 49728 401158 42782 0 2 0x482 syz-executor.5 24678 492877 42782 0 2 0x482 syz-executor.1 35453 386821 0 0 3 0x14200 bored sosplice 42782 100156 77820 0 3 0x1a000082 wait syz-fuzzer 42782 511283 77820 0 3 0x1e000082 thrsleep syz-fuzzer 42782 272818 77820 0 3 0x1e000082 wait syz-fuzzer 42782 479151 77820 0 3 0x1e000082 wait syz-fuzzer 42782 65893 77820 0 3 0x1e000082 wait syz-fuzzer 42782 424384 77820 0 3 0x1e000082 wait syz-fuzzer 42782 206214 77820 0 3 0x1e000082 wait syz-fuzzer 42782 292860 77820 0 3 0x1e000082 thrsleep syz-fuzzer 42782 447181 77820 0 3 0x1e000082 thrsleep syz-fuzzer 42782 36800 77820 0 3 0x1e000082 thrsleep syz-fuzzer 42782 179941 77820 0 3 0x1e000082 thrsleep syz-fuzzer 42782 263351 77820 0 3 0x1e000082 thrsleep syz-fuzzer 42782 423224 77820 0 3 0x1e000082 wait syz-fuzzer 42782 421420 77820 0 3 0x1e000082 thrsleep syz-fuzzer 42782 298607 77820 0 3 0x1e000082 kqread syz-fuzzer 42782 295884 77820 0 3 0x1e000082 wait syz-fuzzer 77820 45746 6189 0 3 0x810008a sigsusp ksh 6189 47455 89079 0 3 0x1800009a kqread sshd 89079 371941 1 0 3 0x18000088 kqread sshd 48606 376373 85649 74 3 0x19100092 bpf pflogd 85649 150539 1 0 3 0x18000080 netio pflogd 18111 486884 16841 73 2 0x19100090 syslogd 16841 67005 1 0 3 0x18100082 netio syslogd 45987 285816 1 0 3 0x18100080 kqread resolvd 39309 499615 59835 77 3 0x18100092 kqread dhcpleased 82686 467379 59835 77 3 0x18100092 kqread dhcpleased 59835 89645 1 0 3 0x18000080 kqread dhcpleased 20422 491450 0 0 3 0x14200 bored smr 6512 175955 0 0 2 0x14200 zerothread 72330 483735 0 0 3 0x14200 aiodoned aiodoned 98868 155825 0 0 2 0x14600 update 5046 395533 0 0 3 0x14200 cleaner cleaner 59938 426894 0 0 2 0x14200 reaper 49345 219536 0 0 3 0x14200 pgdaemon pagedaemon 98378 238320 0 0 3 0x14200 bored viomb 29185 209064 0 0 3 0x40014200 acpi0 acpi0 60374 443162 0 0 7 0x40014200 idle1 38210 294660 0 0 3 0x14200 bored softnet3 97778 385058 0 0 3 0x14200 bored softnet2 12948 150440 0 0 3 0x14200 bored softnet1 30376 241712 0 0 3 0x14200 bored softnet0 21968 270499 0 0 3 0x14200 bored systqmp 83960 502910 0 0 3 0x14200 bored systq 24817 260414 0 0 2 0x14200 softclockmp 15355 472941 0 0 2 0x40014200 softclock 35393 129149 0 0 3 0x40014200 idle0 1 64553 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 48158 (syz-executor.4) thread 0xffff80002bc81810 (131916) exclusive rwlock vmmaplk r = 0 (0xfffffd8067bee820) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5372 #3 uvmfault_lookup+0xb6 sys/uvm/uvm_fault.c:1779 #4 uvm_fault_check+0x63d uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #4 uvm_fault_check+0x63d sys/uvm/uvm_fault.c:710 #5 uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 #6 upageflttrap+0x8b sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x227 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 4532 (syz-executor.3) thread 0xffff80002a17e560 (291895) exclusive rwlock vmmaplk r = 0 (0xfffffd8065b5d9d8) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5372 #3 uvmspace_fork+0xfe sys/uvm/uvm_map.c:3897 #4 process_new+0x3dc sys/kern/kern_fork.c:278 #5 fork1+0x2f5 sys/kern/kern_fork.c:399 #6 syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] #6 syscall+0x53b sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd8076d8c660) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5372 #3 uvmspace_fork+0x3b sys/uvm/uvm_map.c:3888 #4 process_new+0x3dc sys/kern/kern_fork.c:278 #5 fork1+0x2f5 sys/kern/kern_fork.c:399 #6 syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] #6 syscall+0x53b sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 59938 (reaper) thread 0xffff80002a145558 (426894) exclusive rwlock kmmaplk r = 0 (0xffffffff82d79390) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5372 #3 uvm_unmap+0x6f sys/uvm/uvm_map.c:1855 #4 uvm_uarea_free+0x39 sys/uvm/uvm_glue.c:288 #5 reaper+0x168 sys/kern/kern_exit.c:452 #6 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10225 6507K 7583K 166960K 21805 0 pcb 15 22K 24K 166960K 1447 0 rtable 203 6K 8K 166960K 3556 0 pf 39 10K 11K 166960K 387 0 ifaddr 46 17K 18K 166960K 383 0 ifgroup 68 2K 3K 166960K 603 0 sysctl 4 1K 1K 166960K 4 0 counters 70 37K 37K 166960K 394 0 ioctlops 0 0K 4K 166960K 2251 0 iov 0 0K 30K 166960K 2123 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1583 99K 100K 166960K 7622 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 4 9K 13K 166960K 248 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 1306 0 dirhash 12 2K 2K 166960K 78 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 89K 166960K 18919 0 sigio 0 0K 0K 166960K 557 0 proc 79 115K 116K 166960K 2912 0 subproc 104 6K 6K 166960K 754 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1258 0 in_multi 78 5K 7K 166960K 877 0 ether_multi 1 0K 0K 166960K 10 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 217 970K 970K 166960K 217 0 exec 0 0K 1K 166960K 2825 0 pfkey data 0 0K 0K 166960K 16 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 495 441K 446K 166960K 188586 0 UVM aobj 131 4K 4K 166960K 131 0 pinsyscall 26 52K 108K 166960K 2985 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 530 0 NDP 15 0K 2K 166960K 296 0 temp 74 6812K 7452K 166960K 150066 0 kqueue 12 18K 29K 166960K 1621 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 1104 0 1101 14 13 1 3 0 8 0 rtentry 112 1211 0 1120 5 1 4 4 0 8 0 unpcb 144 14600 0 14585 138 137 1 10 0 8 0 syncache 336 94 0 94 25 25 0 1 0 8 0 sackhl 24 7 1 7 3 3 0 1 0 8 0 tcpqe 32 435 0 435 19 19 0 1 0 8 0 tcpcb 808 5059 0 5054 140 139 1 14 0 8 0 arp 120 283 0 267 1 0 1 1 0 8 0 inpcb 392 13297 0 13288 221 219 2 19 0 8 1 nd6 136 190 0 171 1 0 1 1 0 8 0 pkpcb 40 42 0 42 10 10 0 1 0 8 0 kcovpl 48 58 0 50 1 0 1 1 0 8 0 ppxss 1168 64 0 64 19 19 0 1 0 8 0 pffrag 232 139 0 136 7 6 1 1 0 482 0 pffrnode 88 139 0 136 7 6 1 1 0 8 0 pffrent 40 531 0 528 8 7 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 pfstitem 24 626 0 611 1 0 1 1 0 8 0 pfstkey 128 629 0 614 4 2 2 2 0 8 0 pfstate 376 629 0 614 20 17 3 11 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 3602 0 3213 59 30 29 31 0 8 0 art_table 32 3603 0 3213 4 0 4 4 0 8 0 art_node 16 1168 0 1086 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 6 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 1304 0 1294 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 61 0 44 3 0 3 3 0 8 0 dino2pl 256 25448 0 23867 99 0 99 99 0 8 0 ffsino 272 25448 0 23867 106 0 106 106 0 8 0 nchpl 144 50563 0 48830 67 0 67 67 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 163536 0 163536 11 10 1 3 0 8 1 percpumem 16 211 0 162 1 0 1 1 0 8 0 vcpupl 2048 238 0 0 30 0 30 30 0 8 0 vmpool 696 259 0 21 25 3 22 22 0 8 0 kstatmem 264 354 0 324 8 5 3 3 0 8 0 scxspl 216 153308 0 153308 40 39 1 8 1 8 1 plimitpl 152 1994 0 1977 1 0 1 1 0 8 0 sigapl 424 19173 0 19123 15 8 7 9 0 8 0 futexpl 64 154507 0 154505 2 1 1 1 0 8 0 knotepl 120 1341 0 0 17 1 16 17 0 8 0 kqueuepl 216 4183 0 4174 83 82 1 8 0 8 0 pipepl 320 3044 0 3016 79 76 3 8 0 8 0 fdescpl 496 19127 0 19097 19 14 5 5 0 8 0 filepl 152 106378 0 106137 142 129 13 20 0 8 0 lockfpl 104 5335 0 5333 9 8 1 2 0 8 0 lockfspl 48 1668 0 1666 1 0 1 1 0 8 0 sessionpl 144 79 0 62 1 0 1 1 0 8 0 pgrppl 48 542 0 525 1 0 1 1 0 8 0 ucredpl 104 13610 0 13592 1 0 1 1 0 8 0 zombiepl 144 24200 0 24199 1 0 1 1 0 8 0 processpl 1136 19173 0 19123 6 1 5 6 0 8 0 procpl 680 53257 0 53185 14 6 8 10 0 8 0 srpgc 96 89 0 89 31 31 0 1 0 8 0 sosppl 168 182 0 182 15 15 0 1 0 8 0 sockpl 584 29067 0 29040 277 274 3 21 0 8 0 mcl64k 65536 32 0 0 4 1 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 16 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 26 0 0 4 1 3 3 0 8 0 mcl2k2 2112 16 0 0 2 0 2 2 0 8 0 mcl2k 2048 368 0 0 31 10 21 31 0 8 0 mtagpl 96 454 0 0 8 1 7 8 0 8 0 mbufpl 256 1988 0 0 78 0 78 78 0 8 0 bufpl 280 33949 0 27687 448 0 448 448 0 8 0 anonpl 24 1970940 0 1954918 266 125 141 168 0 186 0 amapchunkpl 152 598209 0 597239 113 69 44 67 0 158 0 amappl16 200 42030 0 41195 181 134 47 57 0 8 0 amappl15 192 97 0 96 1 0 1 1 0 8 0 amappl14 184 370 0 353 3 2 1 2 0 8 0 amappl13 176 7 0 6 2 1 1 1 0 8 0 amappl12 168 20561 0 20530 3 1 2 2 0 8 0 amappl11 160 59 0 45 1 0 1 1 0 8 0 amappl10 152 143 0 130 1 0 1 1 0 8 0 amappl9 144 279 0 279 36 36 0 1 0 8 0 amappl8 136 867 0 726 5 0 5 5 0 8 0 amappl7 128 146 0 130 1 0 1 1 0 8 0 amappl6 120 1122 0 1094 2 1 1 2 0 8 0 amappl5 112 785 0 770 1 0 1 1 0 8 0 amappl4 104 1288 0 1239 3 1 2 3 0 8 0 amappl3 96 115891 0 115804 3 0 3 3 0 8 0 amappl2 88 20445 0 20355 7 4 3 4 0 8 0 amappl1 80 79215 0 78666 23 11 12 23 0 8 0 amappl 88 187177 0 186895 10 2 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 19385 0 19117 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 19385 0 19117 2 0 2 2 0 8 0 vmmpekpl 168 140999 0 140908 6 1 5 6 0 8 0 vmmpepl 168 1158639 0 1155244 735 576 159 199 0 357 0 vmsppl 448 19384 0 19117 33 3 30 30 0 8 0 rwobjpl 56 285420 0 277298 136 18 118 119 0 8 0 pdppl 4096 38777 0 38472 865 558 307 309 0 8 2 pvpl 32 48346 0 0 392 2 390 390 0 265 0 pmappl 248 19384 0 19117 17 0 17 17 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1808 0 1078 23 1 22 22 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800000f55028,9,0) at witness_checkorder+0x140 rw_enter_write(ffff800000f55018) at rw_enter_write+0x5c sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000f55000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003741cd78) at unveil_destroy+0x9d sys/kern/kern_unveil.c:183 exit1(ffff80002bc82558,0,0,1) at exit1+0x3ef sys/kern/kern_exit.c:218 sys_exit(ffff80002bc82558,ffff800030cf4ce0,ffff800030cf4c40) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800030cf4ce0) at syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff800030cf4ce0) at syscall+0x53b sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c266259e7c0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e 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+0x27 acpicpu_idle() at acpicpu_idle+0x2f1 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800029cebff0) at sched_idle+0x41d sys/kern/kern_sched.c:183 end trace frame: 0x0, count: -5