witness: lock_object uninitialized: 0xffff8000015c0030 Starting stack trace... witness_checkorder(ffff8000015c0030,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff8000015c0030,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_do_enter_write(ffff8000015c0018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015c0000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c59dda0) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002a434f90,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80002a434f90,ffff80003c520350,ffff80003c5202a0) at sys_exit+0x1a syscall(ffff80003c520350) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c520350) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x770f6924f090, count: 249 End of stack trace. Stopped at db_enter+0x25: 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+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000015c0030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000015c0018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015c0000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c59dda0) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002a434f90,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80002a434f90,ffff80003c520350,ffff80003c5202a0) at sys_exit+0x1a syscall(ffff80003c520350) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c520350) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x770f6924f090, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c51ffe0 rbx 0 rdx 0 rcx 0xffff80002a434f90 rax 0xffffffff83851ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80003c51ff80 r9 0x8080808080808080 r10 0xa129a3b290d5f29e r11 0x2abbe64fb0402df r12 0 r13 0x1 r14 0xffff8000015c0030 r15 0x3 rip 0xffffffff81441685 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c51ffd0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=75733 pid=82763 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a434f90 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c50cd18,0xffff8000ffffb210 process=0xffff80003c59dda0 user=0xffff80003c51b000, vmspace=0xfffffd806be421e8 estcpu=36, cpticks=11, pctcpu=0.0, user=0, sys=9, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 45236 465766 3718 0 7 0x100000 sh 3718 372066 96540 0 3 0x10008a sigsusp sh 55569 484895 330 0 2 0 syz-executor 55569 157030 330 0 3 0x4000080 bell syz-executor 55569 140293 330 0 3 0x4000080 kqpoll syz-executor 55569 190162 330 0 2 0x4000000 syz-executor 92489 142654 67593 0 2 0 syz-executor 92489 456117 67593 0 3 0x4000080 fsleep syz-executor 10106 407718 86983 0 2 0x480 syz-executor 10106 182109 86983 0 3 0x4000080 fsleep syz-executor 10106 124308 86983 0 3 0x4000080 pipewr syz-executor 10106 396661 86983 0 3 0x4000080 fsleep syz-executor 5831 328219 54971 0 2 0x480 syz-executor 5831 6482 54971 0 3 0x4000080 ttyout syz-executor 5831 339899 54971 0 3 0x4000080 fsleep syz-executor 96540 135826 37194 0 3 0x82 wait syz-executor 96844 378320 37194 0 2 0x482 syz-executor 86983 380585 37194 0 2 0x482 syz-executor 71848 433790 1 0 2 0x100083 getty 14255 506866 0 0 3 0x14200 acct acct 71042 15216 37194 0 2 0x482 syz-executor 66861 1058 0 0 3 0x14200 bored sosplice 17436 219524 78535 0 3 0x100082 sbwait ndp 78535 38954 1 0 3 0x10008a sigsusp sh 67593 107527 37194 0 2 0x482 syz-executor 330 201453 37194 0 2 0x482 syz-executor 59239 251486 37194 0 2 0x482 syz-executor 54971 129661 37194 0 2 0x482 syz-executor 37194 289293 87425 0 3 0x82 kqread syz-executor 87425 184895 51797 0 3 0x10008a sigsusp ksh 51797 454066 45737 0 3 0x98 kqread sshd-session 45737 157267 3531 0 3 0x92 kqread sshd-session 3531 111663 1 0 3 0x88 kqread sshd 93887 363557 99038 74 3 0x1100092 bpf pflogd 99038 96108 1 0 3 0x80 sbwait pflogd 94913 298056 76763 73 2 0x1100090 syslogd 76763 473564 1 0 3 0x100082 sbwait syslogd 22204 144304 1 0 3 0x100080 kqread resolvd 52353 111355 3100 77 3 0x100092 kqread dhcpleased 71882 10236 3100 77 3 0x100092 kqread dhcpleased 3100 472757 1 0 3 0x80 kqread dhcpleased 18594 161385 0 0 3 0x14200 bored smr 26540 305840 0 0 2 0x14200 zerothread 49720 499992 0 0 3 0x14200 aiodoned aiodoned 47328 279405 0 0 3 0x14200 syncer update 2834 369750 0 0 3 0x14200 cleaner cleaner 84035 30755 0 0 3 0x14200 reaper reaper 55222 1251 0 0 3 0x14200 pgdaemon pagedaemon 30623 257300 0 0 3 0x14200 bored viomb 62260 187498 0 0 3 0x40014200 acpi0 acpi0 76122 221553 0 0 3 0x40014200 idle1 83930 492294 0 0 3 0x14200 bored softnet3 68692 189342 0 0 3 0x14200 bored softnet2 21381 365645 0 0 3 0x14200 bored softnet1 77209 25498 0 0 2 0x14200 softnet0 76811 190608 0 0 2 0x14200 systqmp 54276 392733 0 0 3 0x14200 bored systq 91389 355269 0 0 2 0x14200 softclockmp 61707 212751 0 0 2 0x40014200 softclock 9210 123871 0 0 3 0x40014200 idle0 1 158818 0 0 3 0x80082 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 10244 11215K 11529K 166960K 14709 0 pcb 17 16K 18K 166960K 699 0 rtable 180 8K 9K 166960K 1116 0 pf 43 19K 27K 166960K 240 0 ifaddr 40 7K 8K 166960K 163 0 ifgroup 64 2K 3K 166960K 284 0 sysctl 4 1K 1K 166960K 6 0 counters 68 36K 37K 166960K 222 0 ioctlops 0 0K 4K 166960K 1864 0 iov 0 0K 28K 166960K 260 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1462 92K 92K 166960K 3784 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 67 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 243 0 dirhash 12 2K 3K 166960K 66 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 20 73K 236K 166960K 3052 0 sigio 1 0K 0K 166960K 219 0 proc 79 115K 139K 166960K 1054 0 subproc 81 5K 5K 166960K 138 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 516 0 in_multi 70 5K 7K 166960K 320 0 ether_multi 2 0K 0K 166960K 42 0 mrt 1 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 930 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 4K 166960K 8 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 258 74K 87K 166960K 30357 0 UVM aobj 131 6K 7K 166960K 139 0 pinsyscall 47 94K 105K 166960K 4352 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 183 0 NDP 14 0K 2K 166960K 113 0 temp 79 8644K 8772K 166960K 113092 0 kqueue 13 20K 30K 166960K 522 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 120 416 0 412 7 6 1 3 0 8 0 rtentry 112 290 0 216 4 1 3 4 0 8 0 unpcb 144 2473 0 2456 21 20 1 6 0 8 0 syncache 336 17 0 17 5 5 0 1 0 8 0 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 808 1034 0 1029 29 25 4 10 0 8 3 arp 120 42 0 29 1 0 1 1 0 8 0 inpcb 376 3701 0 3691 59 50 9 15 0 8 7 nd6 136 49 0 32 1 0 1 1 0 8 0 pkpcb 40 24 0 24 6 5 1 1 0 8 1 kcovpl 48 15 0 6 1 0 1 1 0 8 0 ppxss 1168 44 0 44 6 5 1 1 0 8 1 pppxif 1472 7 0 7 4 3 1 1 0 8 1 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 13 0 8 1 0 1 1 0 482 0 pffrnode 88 13 0 8 1 0 1 1 0 8 0 pffrent 40 37 0 32 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 3 0 1 1 0 1 1 0 8 0 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pftag 88 3 0 2 2 1 1 1 0 8 0 pfstitem 24 174 0 83 1 0 1 1 0 8 0 pfstkey 128 174 0 83 4 0 4 4 0 8 0 pfstate 376 173 0 83 10 0 10 10 0 8 0 pfrule 1344 35 0 25 2 1 1 2 0 8 0 art_heap8 4096 7 0 3 5 1 4 4 0 8 0 art_heap4 256 1268 0 944 30 8 22 29 0 8 1 art_table 32 1275 0 947 4 1 3 4 0 8 0 art_node 16 278 0 214 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 11 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 240 0 230 1 0 1 1 0 8 0 shmpl 112 136 0 8 4 0 4 4 0 8 0 dirhash 1024 53 0 36 3 0 3 3 0 8 0 dino2pl 256 6874 0 5356 96 0 96 96 0 8 0 ffsino 280 6874 0 5356 109 0 109 109 0 8 0 nchpl 144 11075 0 9368 64 0 64 64 0 8 0 rtmask 32 3 0 3 3 3 0 1 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 39414 0 39414 5 4 1 2 0 8 1 percpumem 16 125 0 77 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 158 0 130 6 4 2 3 0 8 0 scsiplug 72 16 0 16 6 5 1 1 0 8 1 scxspl 216 34000 0 34000 21 19 2 8 1 8 2 plimitpl 152 499 0 481 1 0 1 1 0 8 0 sigapl 424 3352 0 3297 9 2 7 9 0 8 0 futexpl 64 43544 0 43540 1 0 1 1 0 8 0 knotepl 120 626 0 0 19 0 19 19 0 8 0 kqueuepl 216 1010 0 1000 11 10 1 5 0 8 0 pipepl 328 634 0 603 11 8 3 8 0 8 0 fdescpl 504 3308 0 3274 5 0 5 5 0 8 0 filepl 152 23326 0 23091 44 31 13 18 0 8 1 lockfpl 104 935 0 933 1 0 1 1 0 8 0 lockfspl 48 345 0 343 1 0 1 1 0 8 0 sessionpl 144 45 0 36 1 0 1 1 0 8 0 pgrppl 48 97 0 79 1 0 1 1 0 8 0 ucredpl 104 3899 0 3884 2 1 1 2 0 8 0 zombiepl 144 3693 0 3690 4 3 1 1 0 8 0 processpl 1168 3352 0 3297 6 0 6 6 0 8 0 procpl 656 8269 0 8205 10 3 7 8 0 8 0 srpgc 96 16 0 16 6 5 1 1 0 8 1 sosppl 168 10 0 10 6 5 1 1 0 8 1 sockpl 688 6652 0 6621 75 65 10 22 0 8 6 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 110 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 91 0 0 9 0 9 9 0 8 0 mtagpl 96 65 0 0 2 0 2 2 0 8 0 mbufpl 256 1236 0 0 76 0 76 76 0 8 0 bufpl 280 8841 0 2687 440 0 440 440 0 8 0 anonpl 24 433006 0 426834 124 62 62 78 0 184 3 amapchunkpl 152 99038 0 98401 54 28 26 31 0 158 1 amappl16 200 8920 0 8812 60 41 19 24 0 8 6 amappl15 192 7 0 6 1 0 1 1 0 8 0 amappl14 184 159 0 146 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 4072 0 4033 3 1 2 2 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 1 0 1 0 8 0 amappl9 144 251 0 251 1 1 0 1 0 8 0 amappl8 136 37 0 34 1 0 1 1 0 8 0 amappl7 128 138 0 124 1 0 1 1 0 8 0 amappl6 120 259 0 254 1 0 1 1 0 8 0 amappl5 112 174 0 164 1 0 1 1 0 8 0 amappl4 104 399 0 377 1 0 1 1 0 8 0 amappl3 96 20863 0 20734 4 0 4 4 0 8 0 amappl2 88 895 0 827 2 0 2 2 0 8 0 amappl1 80 20424 0 19816 16 1 15 16 0 8 0 amappl 88 29667 0 29468 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 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 128 257 0 257 4 4 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 138 0 8 3 0 3 3 0 8 0 uaddrrnd 24 3308 0 3273 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3308 0 3273 1 0 1 1 0 8 0 vmmpekpl 168 26746 0 26686 4 0 4 4 0 8 0 vmmpepl 168 207683 0 205578 133 29 104 111 0 357 5 vmsppl 456 3307 0 3273 5 0 5 5 0 8 0 rwobjpl 64 59783 0 52624 126 6 120 120 0 8 0 pdppl 4096 6623 0 6546 135 58 77 83 0 8 0 pvpl 32 20011 0 0 163 1 162 162 0 265 0 pmappl 248 3307 0 3273 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 434 0 111 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff8000015c0030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000015c0018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015c0000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c59dda0) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002a434f90,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80002a434f90,ffff80003c520350,ffff80003c5202a0) at sys_exit+0x1a syscall(ffff80003c520350) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c520350) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x770f6924f090, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029a9bff0) 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+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff8398e688) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8398e688) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 syscall(ffff80003c506800) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c506800) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e7323a7c360, count: -7