witness: lock_object uninitialized: 0xffff800000c7c028 Starting stack trace... witness_checkorder(ffff800000c7c028,9,0) at witness_checkorder+0x133 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000c7c028,9,0) at witness_checkorder+0x133 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000c7c018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000c7c000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000c7c000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f14d8) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800027b01ce8,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:225 single_thread_check_locked(ffff800027b01ce8,0,0) at single_thread_check_locked+0x227 sys/kern/kern_sig.c:1958 userret(ffff800027b01ce8) at userret+0x224 single_thread_check sys/kern/kern_sig.c:1999 [inline] userret(ffff800027b01ce8) at userret+0x224 sys/kern/kern_sig.c:1946 syscall(ffff800022cae260) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800022cae260) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe100, count: 248 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(ffff800000c7c028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000c7c028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000c7c018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000c7c000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000c7c000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f14d8) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800027b01ce8,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:225 single_thread_check_locked(ffff800027b01ce8,0,0) at single_thread_check_locked+0x227 sys/kern/kern_sig.c:1958 userret(ffff800027b01ce8) at userret+0x224 single_thread_check sys/kern/kern_sig.c:1999 [inline] userret(ffff800027b01ce8) at userret+0x224 sys/kern/kern_sig.c:1946 syscall(ffff800022cae260) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800022cae260) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe100, count: -10 ddb{1}> show registers rdi 0 rsi 0x4000000000000000 rbp 0xffff800022cadeb0 rbx 0x3 rdx 0 rcx 0 rax 0xffff800027b01ce8 r8 0xffff800022cade50 r9 0x8080808080808080 r10 0xffff800022cadda0 r11 0xc3594694a8db8aa3 r12 0xffff800000c7c001 r13 0xffff800000c7c028 r14 0 r15 0 rip 0xffffffff8167b298 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800022cadea0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) pid=58534 stat=onproc flags process=1018 proc=82000 pri=32, usrpri=85, nice=20 forw=0xffffffffffffffff, list=0xffff800027b00fc8,0xffff800027b017b8 process=0xffff8000211f14d8 user=0xffff800022ca9000, vmspace=0xfffffd8067811748 estcpu=35, cpticks=12, pctcpu=0.0 user=0, sys=9, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 44643 6113 42041 0 2 0 syz-executor.2 93832 424142 28039 0 2 0 syz-executor.1 93832 390043 28039 0 2 0x4000000 syz-executor.1 51851 424717 9348 0 3 0x80 nanoslp syz-executor.0 51851 146997 9348 0 3 0x4000080 fsleep syz-executor.0 42041 498185 31908 0 3 0x82 nanoslp syz-executor.2 28039 476627 31908 0 3 0x82 nanoslp syz-executor.1 31913 175935 31908 0 3 0x82 nanoslp syz-executor.3 85080 253154 0 0 3 0x14200 acct acct 82773 494106 0 0 3 0x14280 nfsidl nfsio 83743 49554 0 0 3 0x14280 nfsidl nfsio 76695 45085 0 0 3 0x14280 nfsidl nfsio 29296 373387 0 0 3 0x14280 nfsidl nfsio 46046 342620 0 0 3 0x14280 nfsidl nfsio 47735 455008 0 0 3 0x14280 nfsidl nfsio 67874 456036 0 0 3 0x14280 nfsidl nfsio 59199 78187 0 0 3 0x14280 nfsidl nfsio 10860 520463 0 0 3 0x14280 nfsidl nfsio 71448 231239 0 0 3 0x14280 nfsidl nfsio 56439 335793 0 0 3 0x14280 nfsidl nfsio 3955 470374 0 0 3 0x14280 nfsidl nfsio 64474 142581 0 0 3 0x14280 nfsidl nfsio 96939 517621 0 0 3 0x14280 nfsidl nfsio 97701 32456 0 0 3 0x14280 nfsidl nfsio 88232 187767 0 0 3 0x14280 nfsidl nfsio 19350 489556 0 0 3 0x14280 nfsidl nfsio 95947 446764 0 0 3 0x14280 nfsidl nfsio 30840 347945 0 0 3 0x14280 nfsidl nfsio 38580 136715 0 0 3 0x14280 nfsidl nfsio 17392 472413 0 0 3 0x14200 bored sosplice 9348 367402 31908 0 3 0x82 nanoslp syz-executor.0 31908 477033 29429 0 3 0x82 kqread syz-fuzzer 31908 324090 29429 0 3 0x4000082 thrsleep syz-fuzzer 31908 81643 29429 0 3 0x4000082 thrsleep syz-fuzzer 31908 270745 29429 0 3 0x4000082 thrsleep syz-fuzzer 31908 213356 29429 0 3 0x4000082 thrsleep syz-fuzzer 31908 115084 29429 0 3 0x4000082 thrsleep syz-fuzzer 31908 136101 29429 0 3 0x4000082 thrsleep syz-fuzzer 31908 504619 29429 0 3 0x4000082 thrsleep syz-fuzzer 29429 97420 7725 0 3 0x10008a sigsusp ksh 7725 155928 31556 0 3 0x9a poll sshd 74158 433909 1 0 3 0x100083 ttyopn getty 31556 153336 1 0 3 0x88 poll sshd 67120 229950 46284 74 3 0x100092 bpf pflogd 46284 509298 1 0 3 0x80 netio pflogd 62266 113555 92898 73 3 0x100090 kqread syslogd 92898 360816 1 0 3 0x100082 netio syslogd 81201 277348 1 0 3 0x100080 kqread resolvd 70513 167325 15130 77 3 0x100092 kqread dhcpleased 70392 184224 15130 77 3 0x100092 kqread dhcpleased 15130 148673 1 0 3 0x80 kqread dhcpleased 802 409984 0 0 3 0x14200 bored smr 21956 262285 0 0 2 0x14200 zerothread 14943 81164 0 0 3 0x14200 aiodoned aiodoned 42488 56554 0 0 3 0x14200 syncer update 44964 91070 0 0 3 0x14200 cleaner cleaner 5752 238062 0 0 7 0x14200 reaper 13510 347919 0 0 3 0x14200 pgdaemon pagedaemon 57453 380218 0 0 3 0x14200 bored viomb 47903 415177 0 0 3 0x40014200 acpi0 acpi0 56658 418561 0 0 3 0x40014200 idle1 4278 221120 0 0 3 0x14200 bored softnet 52790 493562 0 0 3 0x14200 bored systqmp 99824 78359 0 0 3 0x14200 bored systq 78627 83104 0 0 3 0x40014200 bored softclock 84749 139187 0 0 3 0x40014200 idle0 1 518285 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 93832 (syz-executor.1) thread 0xffff800027b00fc8 (424142) exclusive rwlock vmmaplk r = 0 (0xfffffd80678115f0) #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 uvmfault_lookup+0xb9 sys/uvm/uvm_fault.c:1740 #4 uvm_fault_check+0x603 uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #4 uvm_fault_check+0x603 sys/uvm/uvm_fault.c:714 #5 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #6 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #7 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #8 recall_trap+0x8 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10185 6479K 6867K 78643K 14989 0 pcb 13 14K 16K 78643K 615 0 rtable 139 9K 11K 78643K 857 0 ifaddr 68 15K 17K 78643K 350 0 sysctl 2 0K 0K 78643K 2 0 counters 48 34K 35K 78643K 118 0 ioctlops 0 0K 6K 78643K 4351 0 iov 0 0K 16K 78643K 212 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1426 90K 90K 78643K 2822 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 34 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 352 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 45K 78643K 2884 0 sigio 0 0K 0K 78643K 9 0 proc 74 111K 111K 78643K 659 0 subproc 52 3K 3K 78643K 132 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 184 0 in_multi 41 2K 3K 78643K 634 0 ether_multi 1 0K 0K 78643K 65 0 mrt 0 0K 0K 78643K 18 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 1075 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 337 282K 282K 78643K 38918 0 UVM aobj 107 7K 7K 78643K 107 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 208 0 NDP 9 0K 1K 78643K 146 0 temp 103 4202K 8297K 78643K 24507 0 kqueue 10 14K 18K 78643K 138 0 SYN cache 2 8K 16K 78643K 3 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 79 0 76 1 0 1 1 0 8 0 rtentry 112 266 0 218 2 0 2 2 0 8 0 unpcb 136 1603 0 1588 27 26 1 6 0 8 0 syncache 296 19 0 19 5 5 0 1 0 8 0 tcpqe 32 364 0 364 5 5 0 2 0 8 0 tcpcb 736 1071 0 1067 50 48 2 11 0 8 1 arp 120 22 0 12 1 0 1 1 0 8 0 inpcb 304 2961 0 2954 56 50 6 9 0 8 5 rttmr 72 3 0 3 1 1 0 1 0 8 0 nd6 48 117 0 110 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 10 0 6 1 0 1 1 0 8 0 ppxss 1248 10 0 10 3 3 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 22 0 20 3 2 1 1 0 482 0 pffrnode 88 22 0 20 3 2 1 1 0 8 0 pffrent 40 346 0 344 3 2 1 1 0 8 0 pfosfp 40 1464 0 1040 5 0 5 5 0 8 0 pfosfpen 112 1464 0 749 21 0 21 21 0 8 0 pfrktable 1344 66 0 57 2 1 1 2 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 19 0 17 1 0 1 1 0 8 0 pfstkey 112 25 0 23 1 0 1 1 0 8 0 pfstate 320 21 0 19 2 1 1 2 0 8 0 pfrule 1360 202 0 183 4 2 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 927 0 734 23 10 13 18 0 8 0 art_table 32 928 0 734 3 0 3 3 0 8 0 art_node 16 262 0 221 1 0 1 1 0 8 0 semapl 112 350 0 340 1 0 1 1 0 8 0 shmpl 112 104 0 0 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 5143 0 3724 90 0 90 90 0 8 0 ffsino 272 5143 0 3724 96 1 95 95 0 8 0 nchpl 144 9021 0 7415 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 33065 0 33065 2 1 1 1 0 8 1 percpumem 16 71 0 35 1 0 1 1 0 8 0 vcpupl 2048 17 0 0 3 0 3 3 0 8 0 vmpool 560 35 0 18 2 0 2 2 0 8 0 pfiaddrpl 120 27 0 14 1 0 1 1 0 8 0 scxspl 216 30289 0 30289 14 13 1 8 0 8 1 plimitpl 152 293 0 282 1 0 1 1 0 8 0 sigapl 424 3126 0 3067 7 0 7 7 0 8 0 futexpl 64 24192 0 24191 2 1 1 1 0 8 0 knotepl 112 99 0 0 3 0 3 3 0 8 0 kqueuepl 216 540 0 534 14 13 1 4 0 8 0 pipepl 336 433 0 417 8 6 2 5 0 8 0 fdescpl 496 3090 0 3068 4 1 3 4 0 8 0 filepl 152 21355 0 21205 48 39 9 14 0 8 3 lockfpl 104 999 0 997 3 2 1 2 0 8 0 lockfspl 48 334 0 332 1 0 1 1 0 8 0 sessionpl 144 26 0 13 1 0 1 1 0 8 0 pgrppl 48 28 0 15 1 0 1 1 0 8 0 ucredpl 96 2381 0 2368 1 0 1 1 0 8 0 zombiepl 144 4604 0 4603 1 0 1 1 0 8 0 processpl 1064 3126 0 3067 4 0 4 4 0 8 0 procpl 672 8725 0 8654 8 1 7 7 0 8 0 srpgc 96 6 0 6 2 2 0 1 0 8 0 sosppl 168 34 0 34 6 6 0 1 0 8 0 sockpl 480 4648 0 4623 130 118 12 29 0 8 8 mcl64k 65536 14 0 0 2 0 2 2 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 9 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 271 0 0 32 4 28 32 0 8 0 mtagpl 96 215 0 0 4 0 4 4 0 8 0 mbufpl 256 700 0 0 33 0 33 33 0 8 0 bufpl 288 8969 0 2625 455 1 454 454 0 8 0 anonpl 24 913044 0 893263 230 108 122 187 0 186 0 amapchunkpl 152 108854 0 108003 92 57 35 60 0 158 1 amappl16 200 7733 0 7118 51 18 33 43 0 8 0 amappl15 192 178 0 175 1 0 1 1 0 8 0 amappl14 184 5 0 4 1 0 1 1 0 8 0 amappl13 176 783 0 780 1 0 1 1 0 8 0 amappl12 168 24 0 23 1 0 1 1 0 8 0 amappl11 160 679 0 662 1 0 1 1 0 8 0 amappl10 152 762 0 751 1 0 1 1 0 8 0 amappl9 144 481 0 479 1 0 1 1 0 8 0 amappl8 136 1095 0 1034 3 0 3 3 0 8 0 amappl7 128 653 0 644 1 0 1 1 0 8 0 amappl6 120 195 0 178 1 0 1 1 0 8 0 amappl5 112 3689 0 3664 1 0 1 1 0 8 0 amappl4 104 1413 0 1388 1 0 1 1 0 8 0 amappl3 96 375 0 358 1 0 1 1 0 8 0 amappl2 88 1245 0 1206 2 1 1 2 0 8 0 amappl1 80 59580 0 59077 13 1 12 13 0 8 0 amappl 88 38359 0 38128 6 0 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 72 106 0 0 2 0 2 2 0 8 0 uaddrrnd 24 3125 0 3085 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3125 0 3085 1 0 1 1 0 8 0 vmmpekpl 168 25720 0 25673 4 1 3 3 0 8 0 vmmpepl 168 286389 0 284158 194 94 100 130 0 357 2 vmsppl 368 3124 0 3085 4 0 4 4 0 8 0 rwobjpl 56 77379 0 69847 107 0 107 107 0 8 0 pdppl 4096 6258 0 6187 101 30 71 71 0 8 0 pvpl 32 1583959 0 1561428 356 165 191 314 0 265 4 pmappl 248 3124 0 3085 4 1 3 3 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 918 0 105 24 0 24 24 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xb sys/dev/kcov.c:139 intr_handler(ffff800021184cc0,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+0x28 kd_curproc sys/dev/kcov.c:571 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x28 sys/dev/kcov.c:143 __mp_lock(ffffffff8292d388) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8292d388) at __mp_lock+0x133 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x1f __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 reaper(ffff8000211497a0) at reaper+0x150 sys/kern/kern_exit.c:450 end trace frame: 0x0, count: -12 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(ffff800000c7c028,9,0) at witness_checkorder+0x138 witness_debugger sys/kern/subr_witness.c:2502 [inline] witness_checkorder(ffff800000c7c028,9,0) at witness_checkorder+0x138 sys/kern/subr_witness.c:772 rw_enter_write(ffff800000c7c018) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800000c7c000) at unveil_delete_names+0x30 unvname_rbt_RBT_MIN sys/kern/kern_unveil.c:90 [inline] unveil_delete_names(ffff800000c7c000) at unveil_delete_names+0x30 sys/kern/kern_unveil.c:100 unveil_destroy(ffff8000211f14d8) at unveil_destroy+0xad sys/kern/kern_unveil.c:191 exit1(ffff800027b01ce8,0,0,3) at exit1+0x3d5 sys/kern/kern_exit.c:225 single_thread_check_locked(ffff800027b01ce8,0,0) at single_thread_check_locked+0x227 sys/kern/kern_sig.c:1958 userret(ffff800027b01ce8) at userret+0x224 single_thread_check sys/kern/kern_sig.c:1999 [inline] userret(ffff800027b01ce8) at userret+0x224 sys/kern/kern_sig.c:1946 syscall(ffff800022cae260) at syscall+0x57e mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800022cae260) at syscall+0x57e sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe100, count: -10