witness: lock_object uninitialized: 0xffff8000015fe030 Starting stack trace... witness_checkorder(ffff8000015fe030,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff8000015fe030,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_do_enter_write(ffff8000015fe018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015fe000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002a44e248) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002a377730,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80002a377730,ffff80003bcd0e90,ffff80003bcd0de0) at sys_exit+0x1a syscall(ffff80003bcd0e90) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bcd0e90) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7498c56cbd70, 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(ffff8000015fe030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000015fe018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015fe000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002a44e248) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002a377730,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80002a377730,ffff80003bcd0e90,ffff80003bcd0de0) at sys_exit+0x1a syscall(ffff80003bcd0e90) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bcd0e90) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7498c56cbd70, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003bcd0b20 rbx 0 rdx 0 rcx 0xffff80002a377730 rax 0xffffffff83791ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80003bcd0ac0 r9 0x8080808080808080 r10 0x65de2c6ad8543bc6 r11 0xe361a252bfff207e r12 0 r13 0x1 r14 0xffff8000015fe030 r15 0x3 rip 0xffffffff82edcdb5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003bcd0b10 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=252622 pid=89464 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a377730 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a3f5750,0xffff80002a377220 process=0xffff80002a44e248 user=0xffff80003bccb000, vmspace=0xfffffd806bcd5c98 estcpu=36, cpticks=10, pctcpu=0.0, user=0, sys=9, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 86575 177646 64713 0 7 0 syz-executor 31870 59078 21101 0 2 0 syz-executor 31870 49407 21101 0 3 0x4000080 fsleep syz-executor 68577 393057 82837 0 2 0x480 syz-executor 68577 404231 82837 0 3 0x4000080 pppxread syz-executor 68577 220045 82837 0 3 0x4000080 fsleep syz-executor 25582 501341 44850 0 2 0x480 syz-executor 25582 135297 44850 0 3 0x4000080 sbwait syz-executor 25582 410395 44850 0 3 0x4000080 fsleep syz-executor 44850 12864 63395 0 2 0x482 syz-executor 76845 46412 0 0 3 0x14280 nfsidl nfsio 56711 301912 0 0 3 0x14280 nfsidl nfsio 49043 259306 0 0 3 0x14280 nfsidl nfsio 16023 365475 0 0 3 0x14280 nfsidl nfsio 35580 431651 0 0 3 0x14280 nfsidl nfsio 64554 78808 0 0 3 0x14280 nfsidl nfsio 74558 454848 0 0 3 0x14280 nfsidl nfsio 86718 277408 0 0 3 0x14280 nfsidl nfsio 907 80116 0 0 3 0x14280 nfsidl nfsio 92814 44767 0 0 3 0x14280 nfsidl nfsio 82682 223524 0 0 3 0x14280 nfsidl nfsio 97048 75718 0 0 3 0x14280 nfsidl nfsio 10056 390030 0 0 3 0x14280 nfsidl nfsio 31127 432330 0 0 3 0x14280 nfsidl nfsio 26473 170459 0 0 3 0x14280 nfsidl nfsio 32594 347102 0 0 3 0x14280 nfsidl nfsio 70328 471759 0 0 3 0x14280 nfsidl nfsio 94941 361367 0 0 3 0x14280 nfsidl nfsio 48283 375666 0 0 3 0x14280 nfsidl nfsio 44403 457698 0 0 3 0x14280 nfsidl nfsio 93149 320031 1 0 2 0x100083 getty 17986 451566 0 0 3 0x14200 bored sosplice 15284 226870 63395 0 2 0x482 syz-executor 82837 23988 63395 0 2 0x482 syz-executor 93893 330504 63395 0 2 0x482 syz-executor 87386 82945 63395 0 2 0x482 syz-executor 64713 227772 63395 0 2 0x482 syz-executor 41021 44413 63395 0 2 0x482 syz-executor 21101 34920 63395 0 2 0x482 syz-executor 63395 253019 6380 0 3 0x82 kqread syz-executor 6380 145739 32128 0 3 0x10008a sigsusp ksh 32128 453386 72221 0 3 0x98 kqread sshd-session 72221 288270 8053 0 3 0x92 kqread sshd-session 8053 237176 1 0 3 0x88 kqread sshd 14277 174496 14309 74 3 0x1100092 bpf pflogd 14309 243399 1 0 3 0x80 sbwait pflogd 35980 236059 97660 73 2 0x1100090 syslogd 97660 316490 1 0 3 0x100082 sbwait syslogd 30857 309376 1 0 3 0x100080 kqread resolvd 8599 98513 80068 77 3 0x100092 kqread dhcpleased 13951 517846 80068 77 3 0x100092 kqread dhcpleased 80068 101010 1 0 3 0x80 kqread dhcpleased 3699 409672 0 0 3 0x14200 pause smr 88335 8876 0 0 3 0x14200 pgzero zerothread 68955 112312 0 0 3 0x14200 aiodoned aiodoned 73369 159479 0 0 3 0x14200 syncer update 30274 522840 0 0 3 0x14200 cleaner cleaner 16870 325921 0 0 3 0x14200 reaper reaper 71012 261672 0 0 3 0x14200 pgdaemon pagedaemon 59159 174712 0 0 3 0x14200 bored viomb 20114 210038 0 0 3 0x40014200 acpi0 acpi0 23653 397578 0 0 3 0x40014200 idle1 76175 98270 0 0 3 0x14200 bored softnet3 87150 346526 0 0 3 0x14200 bored softnet2 57681 405738 0 0 3 0x14200 bored softnet1 4032 228325 0 0 2 0x14200 softnet0 42160 116090 0 0 3 0x14200 bored systqmp 51014 103094 0 0 3 0x14200 bored systq 79453 267110 0 0 3 0x14200 tmoslp softclockmp 38157 366974 0 0 2 0x40014200 softclock 30607 449189 0 0 3 0x40014200 idle0 1 91866 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 25582 (syz-executor) thread 0xffff80002a3f4a80 (135297) exclusive rwlock sbufrcv r = 0 (0xffff8000015ed1c8) #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 sblock+0xb7 sys/kern/uipc_socket2.c:537 #3 soreceive+0x28e sys/kern/uipc_socket.c:882 #4 recvit+0x40a sys/kern/uipc_syscalls.c:1072 #5 sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:963 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10238 11109K 11487K 166960K 13537 0 pcb 19 14K 15K 166960K 346 0 rtable 190 6K 8K 166960K 637 0 pf 37 18K 13201K 166960K 147 0 ifaddr 39 6K 8K 166960K 104 0 ifgroup 57 2K 2K 166960K 188 0 sysctl 4 1K 1K 166960K 8 0 counters 66 36K 37K 166960K 162 0 ioctlops 0 0K 4K 166960K 1622 0 iov 1 4K 34K 166960K 208 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1392 88K 88K 166960K 2488 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 10K 14K 166960K 29 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 62 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 1513 0 sigio 0 0K 0K 166960K 194 0 proc 74 115K 128K 166960K 706 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 267 0 in_multi 78 5K 7K 166960K 168 0 ether_multi 1 0K 0K 166960K 16 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 277 1235K 1235K 166960K 277 0 exec 0 0K 1K 166960K 670 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 234 73K 77K 166960K 15841 0 UVM aobj 53 2K 2K 166960K 57 0 pinsyscall 43 86K 104K 166960K 2689 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 99 0 NDP 12 0K 2K 166960K 72 0 temp 76 8644K 8886K 166960K 44670 0 kqueue 16 26K 30K 166960K 284 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 120 204 0 200 3 2 1 2 0 8 0 rtentry 112 157 0 73 4 0 4 4 0 8 0 unpcb 144 1113 0 1093 14 13 1 6 0 8 0 syncache 336 8 0 8 5 4 1 1 0 8 1 tcpcb 808 409 0 404 8 1 7 7 0 8 6 arp 120 28 0 13 1 0 1 1 0 8 0 inpcb 376 1643 0 1632 28 20 8 9 0 8 6 nd6 136 32 0 11 1 0 1 1 0 8 0 pkpcb 40 14 0 14 6 5 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1168 30 0 28 5 4 1 1 0 8 0 pppxif 1472 6 0 5 4 3 1 1 0 8 0 pffrag 232 10 0 4 1 0 1 1 0 482 0 pffrnode 88 9 0 3 1 0 1 1 0 8 0 pffrent 40 25 0 19 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 pfstitem 24 90 0 29 1 0 1 1 0 8 0 pfstkey 128 90 0 29 2 0 2 2 0 8 0 pfstate 376 90 0 29 7 0 7 7 0 8 0 pfrule 1344 22 0 16 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 609 0 263 30 7 23 29 0 8 0 art_table 32 610 0 263 4 0 4 4 0 8 0 art_node 16 155 0 82 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 5 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 59 0 49 1 0 1 1 0 8 0 shmpl 112 54 0 4 2 0 2 2 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 4096 0 2594 95 0 95 95 0 8 0 ffsino 280 4096 0 2594 109 0 109 109 0 8 0 nchpl 144 6276 0 5733 63 39 24 63 0 8 0 rtmask 32 1 0 1 1 1 0 1 0 8 0 uvmvnodes 80 4851 0 0 99 0 99 99 0 8 0 vnodes 216 4851 0 0 270 0 270 270 0 8 0 namei 1024 22574 0 22574 4 3 1 2 0 8 1 percpumem 16 95 0 48 1 0 1 1 0 8 0 kstatmem 264 104 0 80 3 1 2 3 0 8 0 scsiplug 72 7 0 7 3 3 0 1 0 8 0 scxspl 216 20768 0 20768 13 12 1 8 1 8 1 plimitpl 152 326 0 308 1 0 1 1 0 8 0 sigapl 424 1850 0 1779 10 1 9 9 0 8 0 futexpl 64 21991 0 21988 2 1 1 1 0 8 0 knotepl 120 360 0 0 11 0 11 11 0 8 0 kqueuepl 216 566 0 553 6 5 1 5 0 8 0 pipepl 328 376 0 349 8 5 3 8 0 8 0 fdescpl 504 1810 0 1779 6 1 5 6 0 8 0 filepl 152 11775 0 11544 26 14 12 17 0 8 2 lockfpl 104 540 0 538 2 1 1 2 0 8 0 lockfspl 48 203 0 201 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 51 0 33 1 0 1 1 0 8 0 ucredpl 104 1788 0 1775 1 0 1 1 0 8 0 zombiepl 144 1811 0 1807 1 0 1 1 0 8 0 processpl 1168 1850 0 1779 7 1 6 6 0 8 0 procpl 656 4132 0 4055 9 1 8 8 0 8 0 srpgc 96 6 0 6 2 2 0 1 0 8 0 sosppl 168 14 0 14 2 2 0 1 0 8 0 sockpl 688 3002 0 2967 32 23 9 15 0 8 5 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 31 0 0 4 0 4 4 0 8 0 mtagpl 96 119 0 0 3 0 3 3 0 8 0 mbufpl 256 380 0 0 24 0 24 24 0 8 0 bufpl 280 6211 0 135 434 0 434 434 0 8 0 anonpl 24 220073 0 216118 89 40 49 50 0 184 6 amapchunkpl 152 50768 0 50233 38 14 24 28 0 158 1 amappl16 200 3830 0 3790 29 14 15 15 0 8 9 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 179 0 166 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 2491 0 2459 3 1 2 2 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 33 0 30 1 0 1 1 0 8 0 amappl7 128 117 0 103 1 0 1 1 0 8 0 amappl6 120 216 0 211 1 0 1 1 0 8 0 amappl5 112 159 0 149 1 0 1 1 0 8 0 amappl4 104 387 0 364 1 0 1 1 0 8 0 amappl3 96 10592 0 10474 4 0 4 4 0 8 0 amappl2 88 729 0 666 2 0 2 2 0 8 0 amappl1 80 13435 0 12863 14 0 14 14 0 8 0 amappl 88 15338 0 15160 5 0 5 5 0 92 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 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 2 2 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 56 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1810 0 1778 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1810 0 1778 1 0 1 1 0 8 0 vmmpekpl 168 16472 0 16427 3 0 3 3 0 8 0 vmmpepl 168 113485 0 111549 112 11 101 101 0 357 2 vmsppl 456 1809 0 1778 5 0 5 5 0 8 0 rwobjpl 64 34781 0 28928 99 0 99 99 0 8 0 pdppl 4096 3628 0 3556 134 60 74 88 0 8 2 pvpl 32 16227 0 0 133 2 131 131 0 265 0 pmappl 248 1809 0 1778 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 347 0 84 8 0 8 8 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(ffff8000015fe030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000015fe018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000015fe000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002a44e248) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002a377730,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80002a377730,ffff80003bcd0e90,ffff80003bcd0de0) at sys_exit+0x1a syscall(ffff80003bcd0e90) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bcd0e90) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7498c56cbd70, 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 __mp_lock(ffffffff838e3cd8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838e3cd8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff838e3cd8,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x4b7 sys/kern/sched_bsd.c:441 yield() at yield+0x6a sys/kern/sched_bsd.c:320 pool_get(ffffffff83987eb0,1) at pool_get+0x265 sys/kern/subr_pool.c:593 thread_fork(ffff80002a377210,2a42dc6fd70,2a4afaa6600,2a4afaa6630,ffff80003c4ef880) at thread_fork+0x12b thread_new sys/kern/kern_fork.c:150 [inline] thread_fork(ffff80002a377210,2a42dc6fd70,2a4afaa6600,2a4afaa6630,ffff80003c4ef880) at thread_fork+0x12b sys/kern/kern_fork.c:563 sys___tfork(ffff80002a377210,ffff80003c4ef930,ffff80003c4ef880) at sys___tfork+0x1b6 sys/kern/kern_fork.c:138 syscall(ffff80003c4ef930) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4ef930) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7dcc5d03baf0, count: -12