witness: lock_object uninitialized: 0xffff8000014f4030 Starting stack trace... witness_checkorder(ffff8000014f4030,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff8000014f4030,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_do_enter_write(ffff8000014f4018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014f4000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003a8d1920) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000300a59c8,b,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000300a59c8,ffff80003c586920,ffff80003c586870) at sys_exit+0x1a syscall(ffff80003c586920) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c586920) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x723d20a7ec90, count: 249 End of stack trace. Stopped at db_enter+0x25: 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+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000014f4030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000014f4018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014f4000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003a8d1920) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000300a59c8,b,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000300a59c8,ffff80003c586920,ffff80003c586870) at sys_exit+0x1a syscall(ffff80003c586920) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c586920) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x723d20a7ec90, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c5865b0 rbx 0 rdx 0 rcx 0xffff8000300a59c8 rax 0xffff800029a9bff0 r8 0xffff80003c586550 r9 0x8080808080808080 r10 0x1f5f25ab11fbd29b r11 0xa75384c5699b2e79 r12 0 r13 0x1 r14 0xffff8000014f4030 r15 0x3 rip 0xffffffff81cd1b05 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c5865a0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=439907 pid=95127 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000300a59c8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c4e7228,0xffffffff838dc678 process=0xffff80003a8d1920 user=0xffff80003c581000, vmspace=0xfffffd806bea51e0 estcpu=36, cpticks=11, pctcpu=0.0, user=0, sys=9, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 65449 103801 31017 0 2 0 syz-executor 65449 447986 31017 0 7 0x4000000 syz-executor 59286 10864 45852 0 3 0x80 nanoslp syz-executor 59286 382175 45852 0 3 0x4000080 kqread syz-executor 59286 53995 45852 0 3 0x4000080 fsleep syz-executor 59286 124722 45852 0 3 0x4000080 fsleep syz-executor 23893 78482 57473 0 3 0x80 nanoslp syz-executor 23893 15769 57473 0 3 0x4000080 ttyin syz-executor 23893 140091 57473 0 3 0x4000080 fsleep syz-executor 23893 350726 57473 0 3 0x4000080 fsleep syz-executor 17367 96536 1 0 3 0x100083 ttyin getty 58571 275652 46755 0 3 0x82 sbwait sshd-session 53665 518241 0 0 3 0x14280 nfsidl nfsio 35032 211869 0 0 3 0x14280 nfsidl nfsio 13292 383334 0 0 3 0x14280 nfsidl nfsio 58024 127939 0 0 3 0x14280 nfsidl nfsio 1096 479532 0 0 3 0x14280 nfsidl nfsio 726 99451 0 0 3 0x14280 nfsidl nfsio 99847 441587 0 0 3 0x14280 nfsidl nfsio 26032 321596 0 0 3 0x14280 nfsidl nfsio 80461 309204 0 0 3 0x14280 nfsidl nfsio 77935 366823 0 0 3 0x14280 nfsidl nfsio 24170 231342 0 0 3 0x14280 nfsidl nfsio 96468 110895 0 0 3 0x14280 nfsidl nfsio 18977 105510 0 0 3 0x14280 nfsidl nfsio 6200 160044 0 0 3 0x14280 nfsidl nfsio 34750 114993 0 0 3 0x14280 nfsidl nfsio 71821 309595 0 0 3 0x14280 nfsidl nfsio 80150 187862 0 0 3 0x14280 nfsidl nfsio 20417 235665 0 0 3 0x14280 nfsidl nfsio 92013 120579 0 0 3 0x14280 nfsidl nfsio 46023 116070 0 0 3 0x14280 nfsidl nfsio 70783 36663 0 0 3 0x14200 bored sosplice 57473 515996 3477 0 3 0x82 nanoslp syz-executor 31444 152176 3477 0 3 0x82 nanoslp syz-executor 65852 247372 3477 0 3 0x82 nanoslp syz-executor 83883 288543 3477 0 3 0x82 nanoslp syz-executor 45852 106993 3477 0 3 0x82 nanoslp syz-executor 31017 125778 3477 0 3 0x82 nanoslp syz-executor 5342 345795 3477 0 3 0x82 nanoslp syz-executor 20063 409745 3477 0 3 0x82 nanoslp syz-executor 3477 322638 70544 0 3 0x82 kqread syz-executor 70544 276246 39227 0 3 0x10008a sigsusp ksh 39227 202687 10855 0 3 0x98 kqread sshd-session 10855 490460 46755 0 3 0x92 kqread sshd-session 46755 471728 1 0 3 0x88 kqread sshd 48215 6081 65734 74 3 0x1100092 bpf pflogd 65734 278224 1 0 3 0x80 sbwait pflogd 4502 261006 39395 73 3 0x1100090 kqread syslogd 39395 360256 1 0 3 0x100082 sbwait syslogd 87949 43320 1 0 3 0x100080 kqread resolvd 71718 384857 68903 77 3 0x100092 kqread dhcpleased 82070 171468 68903 77 3 0x100092 kqread dhcpleased 68903 404559 1 0 3 0x80 kqread dhcpleased 71954 133574 0 0 3 0x14200 bored smr 46997 202666 0 0 3 0x14200 pgzero zerothread 80725 168803 0 0 3 0x14200 aiodoned aiodoned 35398 138044 0 0 3 0x14200 syncer update 17693 375637 0 0 3 0x14200 cleaner cleaner 97937 436813 0 0 2 0x14200 reaper 27066 520069 0 0 3 0x14200 pgdaemon pagedaemon 93443 521186 0 0 3 0x14200 bored viomb 16198 44112 0 0 3 0x40014200 acpi0 acpi0 2162 314810 0 0 3 0x40014200 idle1 59369 99503 0 0 3 0x14200 bored softnet3 66940 274718 0 0 3 0x14200 bored softnet2 28605 234435 0 0 3 0x14200 bored softnet1 52566 512918 0 0 2 0x14200 softnet0 38412 353980 0 0 3 0x14200 bored systqmp 52240 112693 0 0 3 0x14200 bored systq 8339 171174 0 0 3 0x14200 tmoslp softclockmp 88398 210936 0 0 3 0x40014200 tmoslp softclock 18691 370826 0 0 3 0x40014200 idle0 1 65596 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 97937 (reaper) thread 0xffff8000ffffccd8 (436813) exclusive rwlock kmmaplk r = 0 (0xffffffff8394a328) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5250 #3 uvm_unmap+0x81 sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:833 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:284 #6 reaper+0x1fe sys/kern/kern_exit.c:466 #7 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10234 11112K 11474K 166960K 13952 0 pcb 17 17K 19K 166960K 472 0 rtable 163 11K 12K 166960K 660 0 pf 40 19K 26K 166960K 659 0 ifaddr 33 5K 7K 166960K 109 0 ifgroup 52 2K 2K 166960K 199 0 sysctl 4 1K 2K 166960K 11 0 counters 66 36K 37K 166960K 174 0 ioctlops 0 0K 8K 166960K 1893 0 iov 0 0K 28K 166960K 242 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1453 91K 92K 166960K 3076 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 48 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 183 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 1784 0 sigio 0 0K 0K 166960K 73 0 proc 80 115K 140K 166960K 735 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 234 0 in_multi 57 4K 7K 166960K 151 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 891 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 269 74K 87K 166960K 18919 0 UVM aobj 93 7K 7K 166960K 95 0 pinsyscall 45 90K 102K 166960K 2956 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 72 0 NDP 11 0K 2K 166960K 76 0 temp 79 8644K 8900K 166960K 62146 0 kqueue 15 24K 29K 166960K 312 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 120 198 0 195 3 1 2 2 0 8 1 rtentry 112 159 0 94 4 0 4 4 0 8 0 unpcb 144 1166 0 1148 8 7 1 6 0 8 0 syncache 336 15 0 15 3 3 0 1 0 8 0 tcpqe 32 5 0 5 3 3 0 1 0 8 0 tcpcb 808 625 0 614 17 12 5 8 0 8 3 arp 120 26 0 14 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 376 2541 0 2525 30 19 11 19 0 8 8 nd6 136 30 0 15 1 0 1 1 0 8 0 pkpcb 40 12 0 12 2 2 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 34 0 32 3 2 1 1 0 8 0 pppxif 1472 9 0 7 4 3 1 1 0 8 0 pffrag 232 12 0 1 1 0 1 1 0 482 0 pffrnode 88 11 0 1 1 0 1 1 0 8 0 pffrent 40 15 0 4 1 0 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 22 0 19 1 0 1 1 0 8 0 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 104 0 36 1 0 1 1 0 8 0 pfstkey 128 105 0 37 3 0 3 3 0 8 0 pfstate 376 105 0 37 8 0 8 8 0 8 0 pfrule 1344 223 0 187 5 1 4 4 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 642 0 359 29 6 23 29 0 8 4 art_table 32 643 0 359 4 0 4 4 0 8 0 art_node 16 155 0 101 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 181 0 171 1 0 1 1 0 8 0 shmpl 112 92 0 2 3 0 3 3 0 8 0 dirhash 1024 34 0 17 3 0 3 3 0 8 0 dino2pl 256 4626 0 3129 95 0 95 95 0 8 0 ffsino 280 4626 0 3129 109 0 109 109 0 8 0 nchpl 144 7283 0 5587 63 0 63 63 0 8 0 uvmvnodes 80 5877 0 0 120 0 120 120 0 8 0 vnodes 216 5877 0 0 327 0 327 327 0 8 0 namei 1024 25742 0 25742 4 3 1 2 0 8 1 percpumem 16 101 0 54 1 0 1 1 0 8 0 pfiaddrpl 120 26 0 0 1 0 1 1 0 8 0 kstatmem 264 112 0 90 2 0 2 2 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 8 0 8 4 3 1 1 0 8 1 scxspl 216 23507 0 23507 13 11 2 8 1 8 2 plimitpl 152 395 0 377 1 0 1 1 0 8 0 sigapl 424 2127 0 2055 9 0 9 9 0 8 0 futexpl 64 25231 0 25227 1 0 1 1 0 8 0 knotepl 120 519 0 0 15 0 15 15 0 8 0 kqueuepl 216 744 0 732 11 7 4 5 0 8 3 pipepl 328 462 0 434 14 8 6 8 0 8 3 fdescpl 504 2086 0 2054 5 0 5 5 0 8 0 filepl 152 14371 0 14134 30 13 17 17 0 8 5 lockfpl 104 646 0 644 2 1 1 2 0 8 0 lockfspl 48 214 0 212 1 0 1 1 0 8 0 sessionpl 144 35 0 25 1 0 1 1 0 8 0 pgrppl 48 60 0 42 1 0 1 1 0 8 0 ucredpl 104 2491 0 2477 1 0 1 1 0 8 0 zombiepl 144 2887 0 2882 1 0 1 1 0 8 0 processpl 1168 2127 0 2055 6 0 6 6 0 8 0 procpl 656 5024 0 4941 8 0 8 8 0 8 0 srpgc 96 9 0 9 3 2 1 1 0 8 1 sosppl 168 14 0 14 2 1 1 1 0 8 1 sockpl 688 3980 0 3945 33 20 13 19 0 8 8 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 42 0 0 6 0 6 6 0 8 0 mtagpl 96 178 0 0 5 0 5 5 0 8 0 mbufpl 256 435 0 0 28 0 28 28 0 8 0 bufpl 280 6901 0 747 440 0 440 440 0 8 0 anonpl 24 233247 0 229273 64 18 46 48 0 184 12 amapchunkpl 152 60805 0 60190 39 13 26 29 0 158 2 amappl16 200 3603 0 3562 34 24 10 15 0 8 6 amappl15 192 12 0 12 1 1 0 1 0 8 0 amappl14 184 134 0 121 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 2755 0 2722 2 0 2 2 0 8 0 amappl11 160 47 0 33 1 0 1 1 0 8 0 amappl10 152 15 0 15 1 1 0 1 0 8 0 amappl9 144 258 0 256 1 0 1 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 121 0 108 1 0 1 1 0 8 0 amappl6 120 197 0 193 1 0 1 1 0 8 0 amappl5 112 133 0 123 1 0 1 1 0 8 0 amappl4 104 384 0 365 1 0 1 1 0 8 0 amappl3 96 12742 0 12603 4 0 4 4 0 8 0 amappl2 88 775 0 703 2 0 2 2 0 8 0 amappl1 80 15926 0 15265 17 1 16 16 0 8 0 amappl 88 18356 0 18147 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 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 7 0 7 2 2 0 1 0 8 0 dma128 128 255 0 255 3 3 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 94 0 2 2 0 2 2 0 8 0 uaddrrnd 24 2086 0 2053 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2086 0 2053 1 0 1 1 0 8 0 vmmpekpl 168 19459 0 19418 3 0 3 3 0 8 0 vmmpepl 168 132145 0 130011 106 6 100 102 0 357 6 vmsppl 456 2085 0 2053 5 0 5 5 0 8 0 rwobjpl 64 40684 0 33611 116 1 115 115 0 8 0 pdppl 4096 4180 0 4106 122 48 74 84 0 8 0 pvpl 32 16011 0 0 129 0 129 129 0 265 0 pmappl 248 2085 0 2053 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 345 0 78 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8380dff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 sys/dev/kcov.c:153 __mp_lock(ffffffff8394c278) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8394c278) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff8000368b4400,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:149 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x95 kd_claim sys/dev/kcov.c:632 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x95 sys/dev/kcov.c:157 __mp_lock(ffffffff8394c278) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8394c278) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 vn_write(fffffd806b30a1d0,ffff8000368b4798,0) at vn_write+0x4e sys/kern/vfs_vnops.c:393 dofilewritev(ffff80003c4e6d08,c8,ffff8000368b4798,0,ffff8000368b4850) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_write(ffff80003c4e6d08,ffff8000368b4900,ffff8000368b4850) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff8000368b4900) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000368b4900) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3a2a053b0b0, count: -17 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000014f4030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000014f4018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014f4000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003a8d1920) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000300a59c8,b,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000300a59c8,ffff80003c586920,ffff80003c586870) at sys_exit+0x1a syscall(ffff80003c586920) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c586920) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x723d20a7ec90, count: -9