witness: lock_object uninitialized: 0xffff800000ec1028 Starting stack trace... witness_checkorder(ffff800000ec1028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000ec1028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000ec1018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000ec1000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000ec1000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f2578) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002123c7e0,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:225 single_thread_check_locked(ffff80002123c7e0,0,0) at single_thread_check_locked+0x227 sys/kern/kern_sig.c:1958 userret(ffff80002123c7e0) at userret+0x224 single_thread_check sys/kern/kern_sig.c:1999 [inline] userret(ffff80002123c7e0) at userret+0x224 sys/kern/kern_sig.c:1946 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7fffffae60, 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(ffff800000ec1028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000ec1028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000ec1018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000ec1000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000ec1000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f2578) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002123c7e0,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:225 single_thread_check_locked(ffff80002123c7e0,0,0) at single_thread_check_locked+0x227 sys/kern/kern_sig.c:1958 userret(ffff80002123c7e0) at userret+0x224 single_thread_check sys/kern/kern_sig.c:1999 [inline] userret(ffff80002123c7e0) at userret+0x224 sys/kern/kern_sig.c:1946 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7fffffae60, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800027bc9c00 rbx 0x3 rdx 0 rcx 0 rax 0xffff80002123c7e0 r8 0xffff800027bc9ba0 r9 0x8080808080808080 r10 0xb392324ec0d963d4 r11 0xfd0ffc7832147dbc r12 0xffff800000ec1001 r13 0xffff800000ec1028 r14 0 r15 0 rip 0xffffffff81410c88 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800027bc9bf0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) pid=59793 stat=onproc flags process=1008 proc=82000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80002123c540,0xffff80002123dcf0 process=0xffff8000211f2578 user=0xffff800027bc4000, vmspace=0xfffffd8078f20740 estcpu=36, cpticks=10, pctcpu=0.0 user=0, sys=8, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 35820 17769 14149 0 3 0 futex syz-executor.1 35820 178316 14149 0 3 0x4000080 ttyopn syz-executor.1 35820 112721 14149 0 3 0x4000080 ttyopn syz-executor.1 35820 125660 14149 0 2 0x4000000 syz-executor.1 35820 306982 14149 0 7 0x4000000 syz-executor.1 35820 182688 14149 0 2 0x4000000 syz-executor.1 10619 112534 22522 0 3 0x82 piperd syz-executor.2 63122 10838 22522 0 3 0x82 nanoslp syz-executor.3 14149 332397 22522 0 3 0x82 nanoslp syz-executor.1 84568 397334 22522 0 3 0x82 piperd syz-executor.0 52406 2513 0 0 3 0x14200 acct acct 50193 229077 1 0 3 0x100083 ttyopn getty 92872 56637 0 0 3 0x14200 bored sosplice 22522 66989 92202 0 3 0x82 thrsleep syz-fuzzer 22522 392636 92202 0 3 0x4000082 nanoslp syz-fuzzer 22522 482368 92202 0 3 0x4000082 kqread syz-fuzzer 22522 46989 92202 0 3 0x4000082 thrsleep syz-fuzzer 22522 63680 92202 0 3 0x4000082 thrsleep syz-fuzzer 22522 408624 92202 0 3 0x4000082 thrsleep syz-fuzzer 22522 251411 92202 0 3 0x4000082 thrsleep syz-fuzzer 22522 483403 92202 0 3 0x4000082 thrsleep syz-fuzzer 22522 461400 92202 0 3 0x4000082 thrsleep syz-fuzzer 92202 142614 50663 0 3 0x10008a sigsusp ksh 50663 478055 71771 0 3 0x9a poll sshd 71771 235018 1 0 3 0x88 poll sshd 45655 88638 81558 74 3 0x100092 bpf pflogd 81558 452461 1 0 3 0x80 netio pflogd 90746 358125 37141 73 3 0x100090 kqread syslogd 37141 414268 1 0 3 0x100082 netio syslogd 6858 462092 1 0 3 0x100080 kqread resolvd 33096 367812 47096 77 3 0x100092 kqread dhcpleased 31025 188067 47096 77 3 0x100092 kqread dhcpleased 47096 410944 1 0 3 0x80 kqread dhcpleased 2308 498884 0 0 3 0x14200 bored smr 88532 326126 0 0 2 0x14200 zerothread 68312 164371 0 0 3 0x14200 aiodoned aiodoned 82983 393258 0 0 3 0x14200 syncer update 64975 394218 0 0 3 0x14200 cleaner cleaner 5337 118013 0 0 2 0x14200 reaper 75022 170729 0 0 3 0x14200 pgdaemon pagedaemon 6714 434749 0 0 3 0x14200 bored viomb 17531 463733 0 0 3 0x40014200 acpi0 acpi0 55351 48459 0 0 3 0x40014200 idle1 20948 137480 0 0 3 0x14200 bored softnet 32970 318612 0 0 3 0x14200 bored systqmp 6926 318776 0 0 3 0x14200 bored systq 96730 487760 0 0 3 0x40014200 bored softclock 26230 52698 0 0 3 0x40014200 idle0 1 188092 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 35820 (syz-executor.1) thread 0xffff80002123dce0 (125660) exclusive rwlock futex r = 0 (0xffffffff827a19e0) #0 witness_lock+0x44d #1 sys_futex+0x5c sys/kern/sys_futex.c:108 #2 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #2 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #3 Xsyscall+0x128 Process 35820 (syz-executor.1) thread 0xffff800021261a50 (306982) exclusive rwlock amaplk r = 0 (0xfffffd807036dd38) #0 witness_lock+0x44d #1 uvm_fault_check+0x3ca sys/uvm/uvm_fault.c:776 #2 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #3 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #4 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd8078f20198) #0 witness_lock+0x44d #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1746 #2 uvm_fault_check+0x3a sys/uvm/uvm_fault.c:676 #3 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #4 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #5 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #6 recall_trap+0x8 Process 5337 (reaper) thread 0xffff800021149500 (118013) 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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10233 6652K 19175K 78643K 125072 0 pcb 13 20K 25K 78643K 5529 0 rtable 233 33K 33K 78643K 8543 0 ifaddr 123 37K 45K 78643K 6475 0 sysctl 3 1K 5K 78643K 9 0 counters 56 35K 36K 78643K 1712 0 ioctlops 0 0K 8K 78643K 14610 0 iov 0 0K 32K 78643K 3754 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1485 93K 94K 78643K 33721 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 224 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 17 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 7 21K 45K 78643K 33620 0 sigio 0 0K 0K 78643K 414 0 proc 75 111K 111K 78643K 3063 0 subproc 52 3K 3K 78643K 814 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1474 0 in_multi 52 3K 4K 78643K 1803 0 ether_multi 1 0K 0K 78643K 500 0 mrt 1 0K 0K 78643K 266 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 271 1208K 1208K 78643K 271 0 exec 0 0K 2K 78643K 4477 0 pfkey data 0 0K 1K 78643K 11 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 541 929K 941K 78643K 430934 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 2047 0 NDP 13 0K 1K 78643K 1057 0 temp 143 4262K 8303K 78643K 301568 0 kqueue 11 16K 22K 78643K 990 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 1211 0 1208 12 11 1 5 0 8 0 rtentry 112 2082 0 2020 2 0 2 2 0 8 0 unpcb 136 17373 0 17358 175 170 5 9 0 8 4 syncache 296 146 0 146 39 39 0 1 0 8 0 tcpqe 32 249 0 249 13 13 0 1 0 8 0 tcpcb 736 15679 0 15675 334 329 5 23 0 8 4 arp 120 485 0 473 1 0 1 1 0 8 0 inpcb 304 44593 0 44586 327 321 6 11 0 8 5 rttmr 72 21 0 21 8 8 0 1 0 8 0 ip6q 72 9 0 9 3 3 0 1 0 8 0 ip6af 40 27 0 27 3 3 0 1 0 8 0 nd6 48 320 0 308 1 0 1 1 0 8 0 pkpcb 40 179 0 179 16 15 1 1 0 8 1 kcovpl 48 62 0 58 1 0 1 1 0 8 0 ppxss 1248 588 0 585 14 13 1 1 0 8 0 pfstscr 40 29 0 29 7 7 0 1 0 8 0 pffrag 232 188 0 188 11 11 0 1 0 482 0 pffrnode 88 188 0 188 11 11 0 1 0 8 0 pffrent 40 1480 0 1480 12 12 0 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 1455 0 1416 27 23 4 4 0 8 0 pftag 88 198 0 191 1 0 1 1 0 8 0 pfqueue 264 6 0 6 2 2 0 1 0 8 0 pfstitem 24 77 0 75 1 0 1 1 0 8 0 pfstkey 112 135 0 133 1 0 1 1 0 8 0 pfstate 320 101 0 99 2 1 1 2 0 8 0 pfrule 1360 9122 0 8528 52 2 50 50 0 8 0 art_heap8 4096 6 0 5 4 3 1 3 0 8 0 art_heap4 256 5654 0 5387 47 28 19 20 0 8 0 art_table 32 5660 0 5392 4 1 3 3 0 8 0 art_node 16 2077 0 2024 1 0 1 1 0 8 0 sysvmsgpl 40 61 0 25 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 46181 0 44720 92 0 92 92 0 8 0 ffsino 272 46181 0 44720 98 0 98 98 0 8 0 nchpl 144 90284 0 88684 61 0 61 61 0 8 0 uvmvnodes 80 7274 0 0 149 0 149 149 0 8 0 vnodes 224 7274 0 0 428 0 428 428 0 8 0 namei 1024 311095 0 311095 7 6 1 2 0 8 1 percpumem 16 868 0 828 1 0 1 1 0 8 0 vcpupl 2048 388 0 0 49 0 49 49 0 8 0 vmpool 560 512 0 124 30 2 28 28 0 8 0 pfiaddrpl 120 320 0 195 4 0 4 4 0 8 0 scsiplug 72 26 0 26 10 10 0 1 0 8 0 scxspl 216 286158 0 286158 76 75 1 8 0 8 1 plimitpl 152 2847 0 2836 1 0 1 1 0 8 0 sigapl 424 33714 0 33677 7 1 6 7 0 8 0 futexpl 64 319117 0 319116 9 8 1 1 0 8 0 knotepl 112 235 0 0 3 0 3 3 0 8 0 kqueuepl 216 9442 0 9425 160 158 2 8 0 8 1 pipepl 336 5048 0 5032 129 127 2 8 0 8 0 fdescpl 496 33672 0 33652 4 1 3 4 0 8 0 filepl 152 234766 0 234614 280 266 14 17 0 8 8 lockfpl 104 8185 0 8183 7 6 1 2 0 8 0 lockfspl 48 2925 0 2923 1 0 1 1 0 8 0 sessionpl 144 80 0 67 1 0 1 1 0 8 0 pgrppl 48 124 0 111 1 0 1 1 0 8 0 ucredpl 96 23571 0 23555 1 0 1 1 0 8 0 zombiepl 144 37786 0 37785 5 4 1 1 0 8 0 processpl 1064 33714 0 33677 4 1 3 4 0 8 0 procpl 672 98485 0 98432 19 13 6 8 0 8 0 srpgc 96 52 0 52 13 13 0 1 0 8 0 sosppl 168 228 0 228 35 34 1 1 0 8 1 sockpl 480 63448 0 63423 900 888 12 34 0 8 8 mcl64k 65536 59 0 0 3 0 3 3 0 8 0 mcl16k 16384 39 0 0 4 2 2 3 0 8 0 mcl12k 12288 49 0 0 2 0 2 2 0 8 0 mcl9k 9216 47 0 0 3 1 2 2 0 8 0 mcl8k 8192 49 0 0 5 0 5 5 0 8 0 mcl4k 4096 35 0 0 4 1 3 3 0 8 0 mcl2k2 2112 13 0 0 1 0 1 1 0 8 0 mcl2k 2048 841 0 0 78 2 76 76 0 8 0 mtagpl 96 1162 0 0 12 2 10 10 0 8 0 mbufpl 256 6814 0 0 406 0 406 406 0 8 0 bufpl 288 62503 0 55230 520 0 520 520 0 8 0 anonpl 24 9689125 0 9671067 677 542 135 195 0 186 0 amapchunkpl 152 1055204 0 1054343 327 290 37 64 0 158 1 amappl16 200 89913 0 89235 348 311 37 49 0 8 1 amappl15 192 2131 0 2130 1 0 1 1 0 8 0 amappl14 184 4685 0 4679 1 0 1 1 0 8 0 amappl13 176 5505 0 5500 1 0 1 1 0 8 0 amappl12 168 5646 0 5638 2 1 1 1 0 8 0 amappl11 160 2225 0 2209 1 0 1 1 0 8 0 amappl10 152 4805 0 4792 1 0 1 1 0 8 0 amappl9 144 5498 0 5495 1 0 1 1 0 8 0 amappl8 136 5806 0 5641 6 0 6 6 0 8 0 amappl7 128 4166 0 4153 1 0 1 1 0 8 0 amappl6 120 5587 0 5565 1 0 1 1 0 8 0 amappl5 112 31468 0 31450 1 0 1 1 0 8 0 amappl4 104 5149 0 5118 1 0 1 1 0 8 0 amappl3 96 11823 0 11804 1 0 1 1 0 8 0 amappl2 88 10877 0 10821 3 1 2 2 0 8 0 amappl1 80 605924 0 605424 15 3 12 13 0 8 1 amappl 88 429030 0 428743 8 1 7 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 34184 0 33775 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 34184 0 33775 3 0 3 3 0 8 0 vmmpekpl 168 213247 0 213178 4 0 4 4 0 8 0 vmmpepl 168 3046864 0 3043856 664 499 165 165 0 357 24 vmsppl 368 34183 0 33775 38 0 38 38 0 8 0 rwobjpl 56 739843 0 730688 192 62 130 130 0 8 0 pdppl 4096 68376 0 67938 521 79 442 442 0 8 4 pvpl 32 16158029 0 16138352 1047 854 193 316 0 265 0 pmappl 248 34183 0 33775 26 0 26 26 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 2397 0 581 53 0 53 53 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff827f3ff0) 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(ffffffff82993700) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82993700) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff800027b5b390,ffff800000077500) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x40 sys/dev/kcov.c:149 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff82993700) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82993700) at __mp_lock+0x129 sys/kern/kern_lock.c:147 uvm_fault(fffffd8078f20180,14416571000,0,2) at uvm_fault+0x233 sys/uvm/uvm_fault.c:639 upageflttrap(ffff800027b5b870,14416571000) at upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff800027b5b870) at usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x14367aab610, count: -14 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(ffff800000ec1028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000ec1028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000ec1018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000ec1000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000ec1000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f2578) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff80002123c7e0,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:225 single_thread_check_locked(ffff80002123c7e0,0,0) at single_thread_check_locked+0x227 sys/kern/kern_sig.c:1958 userret(ffff80002123c7e0) at userret+0x224 single_thread_check sys/kern/kern_sig.c:1999 [inline] userret(ffff80002123c7e0) at userret+0x224 sys/kern/kern_sig.c:1946 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0x7f7fffffae60, count: -9