witness: lock_object uninitialized: 0xffff800001505030 Starting stack trace... witness_checkorder(ffff800001505030,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff800001505030,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_do_enter_write(ffff800001505018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff800001505000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002f099938) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000ffffd1f8,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000ffffd1f8,ffff80003c50df60,ffff80003c50deb0) at sys_exit+0x1a syscall(ffff80003c50df60) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c50df60) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a8c02323280, 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(ffff800001505030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff800001505018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff800001505000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002f099938) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000ffffd1f8,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000ffffd1f8,ffff80003c50df60,ffff80003c50deb0) at sys_exit+0x1a syscall(ffff80003c50df60) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c50df60) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a8c02323280, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c50dbf0 rbx 0 rdx 0 rcx 0xffff8000ffffd1f8 rax 0xffffffff8380dff0 cpu_info_full_primary+0x1ff0 r8 0xffff80003c50db90 r9 0x8080808080808080 r10 0xbeecef7b88c9ae r11 0x899283fca2e5cf72 r12 0 r13 0x1 r14 0xffff800001505030 r15 0x3 rip 0xffffffff81cd1b05 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c50dbe0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=93334 pid=56076 tcnt=0 stat=onproc flags process=1018 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000ffffd1f8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a38fc50,0xffff80002a38c548 process=0xffff80002f099938 user=0xffff80003c509000, vmspace=0xfffffd806becaac8 estcpu=36, cpticks=8, pctcpu=0.18, user=0, sys=8, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 49373 252588 23074 0 2 0 syz-executor 49373 418473 23074 0 2 0x4000000 syz-executor 49373 109534 23074 0 2 0x4000000 syz-executor 49373 20817 23074 0 3 0x4000080 fsleep syz-executor 85070 32296 59649 0 2 0 syz-executor 85070 146352 59649 0 3 0x4000080 fsleep syz-executor 5297 4156 4900 0 2 0 syz-executor 5297 195766 4900 0 2 0x4000000 syz-executor 5297 140849 4900 0 2 0x4000000 syz-executor 87672 309706 4366 0 2 0 syz-executor 87672 220041 4366 0 3 0x4000080 kqread syz-executor 87672 259086 4366 0 2 0x4000000 syz-executor 30045 227393 54084 0 2 0x480 syz-executor 30045 184014 54084 0 3 0x4000080 fifow syz-executor 30045 17184 54084 0 3 0x4000080 fsleep syz-executor 30045 168963 54084 0 3 0x4000080 fsleep syz-executor 46648 5335 67554 0 2 0 syz-executor 46648 418156 67554 0 2 0x4000000 syz-executor 46648 276952 67554 0 3 0x4000080 fsleep syz-executor 86834 314295 0 0 3 0x14200 acct acct 95493 447675 1 0 2 0x100083 getty 59649 285897 52506 0 2 0x3 syz-executor 25102 463588 43614 0 3 0x82 sbwait sshd-session 19006 445403 52506 0 2 0x2 syz-executor 81138 202209 0 0 3 0x14200 bored sosplice 14348 341463 52506 0 2 0x482 syz-executor 23074 476357 52506 0 2 0x3 syz-executor 67554 524033 52506 0 2 0x482 syz-executor 4900 68034 52506 0 2 0x482 syz-executor 4366 491846 52506 0 2 0x3 syz-executor 54084 379658 52506 0 2 0x3 syz-executor 52506 420411 88081 0 3 0x82 kqread syz-executor 88081 91971 99630 0 3 0x10008a sigsusp ksh 99630 418500 75916 0 3 0x98 kqread sshd-session 75916 372793 43614 0 3 0x92 kqread sshd-session 43614 261566 1 0 3 0x88 kqread sshd 10405 289031 677 74 3 0x1100092 bpf pflogd 677 193923 1 0 3 0x80 sbwait pflogd 7452 249286 27879 73 2 0x1100090 syslogd 27879 506316 1 0 3 0x100082 sbwait syslogd 32953 514466 1 0 3 0x100080 kqread resolvd 51724 158344 3067 77 3 0x100092 kqread dhcpleased 52306 145345 3067 77 3 0x100092 kqread dhcpleased 3067 130463 1 0 3 0x80 kqread dhcpleased 80724 2293 0 0 3 0x14200 bored smr 74441 182615 0 0 2 0x14200 zerothread 47195 76667 0 0 3 0x14200 aiodoned aiodoned 43259 388776 0 0 3 0x14200 syncer update 13157 273886 0 0 3 0x14200 cleaner cleaner 60285 418560 0 0 3 0x14200 reaper reaper 65119 37745 0 0 3 0x14200 pgdaemon pagedaemon 69662 57639 0 0 3 0x14200 bored viomb 42006 187666 0 0 3 0x40014200 acpi0 acpi0 48449 312456 0 0 7 0x40014200 idle1 41619 41674 0 0 3 0x14200 bored softnet3 66578 258969 0 0 3 0x14200 bored softnet2 20958 279964 0 0 3 0x14200 bored softnet1 34668 8876 0 0 2 0x14200 softnet0 53177 289730 0 0 3 0x14200 bored systqmp 6767 190227 0 0 3 0x14200 bored systq 90548 289125 0 0 3 0x14200 tmoslp softclockmp 89010 268592 0 0 2 0x40014200 softclock 84734 331211 0 0 3 0x40014200 idle0 1 209657 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 5297 (syz-executor) thread 0xffff80003b4c94a8 (195766) exclusive rwlock vmmaplk r = 0 (0xfffffd806beca838) #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 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1858 #4 uvm_fault_check+0x987 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x987 sys/uvm/uvm_fault.c:774 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:668 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 46648 (syz-executor) thread 0xffff80002a38e020 (418156) exclusive rwlock futex r = 0 (0xffffffff83895658) #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 sys_futex+0x69 sys/kern/sys_futex.c:98 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 19006 (syz-executor) thread 0xffff80003b4c9738 (445403) exclusive rwlock vmmaplk r = 0 (0xfffffd806becaa00) #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 uvmspace_fork+0x12b sys/uvm/uvm_map.c:3820 #4 process_new+0x553 sys/kern/kern_fork.c:279 #5 fork1+0x3ea sys/kern/kern_fork.c:405 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd806eb7f660) #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 uvmspace_fork+0x44 sys/uvm/uvm_map.c:3811 #4 process_new+0x553 sys/kern/kern_fork.c:279 #5 fork1+0x3ea sys/kern/kern_fork.c:405 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10208 11034K 11610K 166960K 12971 0 pcb 18 15K 17K 166960K 280 0 rtable 221 7K 7K 166960K 504 0 pf 35 17K 18K 166960K 91 0 ifaddr 41 7K 7K 166960K 84 0 ifgroup 55 2K 2K 166960K 120 0 sysctl 3 1K 2K 166960K 4 0 counters 64 36K 36K 166960K 108 0 ioctlops 0 0K 4K 166960K 1565 0 iov 0 0K 16K 166960K 96 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1397 88K 88K 166960K 2330 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 13K 166960K 27 0 VM map 2 1K 1K 166960K 2 0 sem 23 68K 68K 166960K 34 0 dirhash 12 2K 3K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 85K 166960K 1231 0 sigio 0 0K 0K 166960K 89 0 proc 78 115K 140K 166960K 730 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 150 0 in_multi 94 6K 7K 166960K 188 0 ether_multi 1 0K 0K 166960K 16 0 mrt 0 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 527 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 255 74K 87K 166960K 13155 0 UVM aobj 131 8K 8K 166960K 132 0 pinsyscall 45 90K 101K 166960K 2399 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 54 0 NDP 12 0K 2K 166960K 57 0 temp 77 8644K 8712K 166960K 35730 0 kqueue 13 20K 28K 166960K 197 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 95 0 92 1 0 1 1 0 8 0 rtentry 112 160 0 59 4 0 4 4 0 8 0 unpcb 144 707 0 688 7 6 1 4 0 8 0 syncache 336 9 0 9 3 3 0 1 0 8 0 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 808 306 0 298 9 4 5 9 0 8 4 arp 120 25 0 8 1 0 1 1 0 8 0 inpcb 376 1471 0 1458 20 14 6 9 0 8 3 nd6 136 36 0 10 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1168 13 0 13 3 2 1 1 0 8 1 pppxif 1472 1 0 1 1 1 0 1 0 8 0 pffrag 232 10 0 3 1 0 1 1 0 482 0 pffrnode 88 9 0 3 1 0 1 1 0 8 0 pffrent 40 16 0 9 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 72 0 34 1 0 1 1 0 8 0 pfstkey 128 73 0 35 2 0 2 2 0 8 0 pfstate 376 73 0 35 5 0 5 5 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 680 0 235 32 4 28 30 0 8 0 art_table 32 682 0 235 4 0 4 4 0 8 0 art_node 16 157 0 66 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 5 1 1 0 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 30 0 9 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 3635 0 2127 95 0 95 95 0 8 0 ffsino 280 3635 0 2127 109 0 109 109 0 8 0 nchpl 144 5390 0 4851 63 39 24 63 0 8 0 uvmvnodes 80 4188 0 0 86 0 86 86 0 8 0 vnodes 216 4188 0 0 233 0 233 233 0 8 0 namei 1024 17939 0 17939 1 0 1 1 0 8 1 percpumem 16 68 0 22 1 0 1 1 0 8 0 kstatmem 264 64 0 40 2 0 2 2 0 8 0 scsiplug 72 3 0 3 3 3 0 1 0 8 0 scxspl 216 17957 0 17957 13 12 1 8 1 8 1 plimitpl 152 225 0 208 1 0 1 1 0 8 0 sigapl 424 1536 0 1483 8 1 7 7 0 8 0 futexpl 64 15743 0 15737 1 0 1 1 0 8 0 knotepl 120 567 0 0 18 0 18 18 0 8 0 kqueuepl 216 503 0 492 8 4 4 5 0 8 3 pipepl 328 312 0 284 11 8 3 9 0 8 0 fdescpl 504 1515 0 1483 5 0 5 5 0 8 0 filepl 152 9732 0 9508 25 12 13 17 0 8 3 lockfpl 104 609 0 606 3 2 1 2 0 8 0 lockfspl 48 147 0 144 1 0 1 1 0 8 0 sessionpl 144 32 0 22 1 0 1 1 0 8 0 pgrppl 48 57 0 39 1 0 1 1 0 8 0 ucredpl 104 1789 0 1774 1 0 1 1 0 8 0 zombiepl 144 1888 0 1887 2 1 1 1 0 8 0 processpl 1168 1536 0 1483 4 0 4 4 0 8 0 procpl 656 3361 0 3295 7 0 7 7 0 8 1 srpgc 96 5 0 5 2 2 0 1 0 8 0 sosppl 168 8 0 8 2 2 0 1 0 8 0 sockpl 688 2288 0 2253 21 14 7 10 0 8 2 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 110 0 0 14 0 14 14 0 8 0 mcl2k 2048 35 0 0 5 0 5 5 0 8 0 mtagpl 96 27 0 0 1 0 1 1 0 8 0 mbufpl 256 269 0 0 17 0 17 17 0 8 0 bufpl 280 5582 0 138 389 0 389 389 0 8 0 anonpl 24 228026 0 223594 77 18 59 59 0 184 18 amapchunkpl 152 42726 0 42115 37 9 28 30 0 158 3 amappl16 200 5025 0 4986 30 15 15 15 0 8 8 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 130 0 117 1 0 1 1 0 8 0 amappl13 176 21 0 21 1 1 0 1 0 8 0 amappl12 168 2197 0 2165 4 2 2 3 0 8 0 amappl11 160 64 0 50 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 1 0 1 0 8 0 amappl9 144 246 0 246 1 1 0 1 0 8 0 amappl8 136 72 0 68 1 0 1 1 0 8 0 amappl7 128 122 0 109 1 0 1 1 0 8 0 amappl6 120 203 0 199 1 0 1 1 0 8 0 amappl5 112 136 0 126 1 0 1 1 0 8 0 amappl4 104 342 0 322 1 0 1 1 0 8 0 amappl3 96 8660 0 8533 4 0 4 4 0 8 0 amappl2 88 728 0 658 2 0 2 2 0 8 0 amappl1 80 12681 0 12028 16 1 15 16 0 8 0 amappl 88 12675 0 12481 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 2 0 2 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 131 0 1 3 0 3 3 0 8 0 uaddrrnd 24 1515 0 1482 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1515 0 1482 1 0 1 1 0 8 0 vmmpekpl 168 14129 0 14079 3 0 3 3 0 8 0 vmmpepl 168 98821 0 96770 110 8 102 102 0 357 6 vmsppl 456 1514 0 1482 6 1 5 5 0 8 0 rwobjpl 64 32943 0 27556 89 0 89 89 0 8 0 pdppl 4096 3038 0 2964 112 38 74 82 0 8 0 pvpl 32 16904 0 0 137 1 136 136 0 265 0 pmappl 248 1514 0 1482 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 312 0 54 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(ffff800001505030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff800001505018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff800001505000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002f099938) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000ffffd1f8,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000ffffd1f8,ffff80003c50df60,ffff80003c50deb0) at sys_exit+0x1a syscall(ffff80003c50df60) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c50df60) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a8c02323280, 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff800029a9bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5