login: witness: lock_object uninitialized: 0xffff800010fcb028 Starting stack trace... witness_checkorder(ffff800010fcb028,9,0) at witness_checkorder+0x13b witness_debugger sys/kern/subr_witness.c:2510 [inline] witness_checkorder(ffff800010fcb028,9,0) at witness_checkorder+0x13b sys/kern/subr_witness.c:777 rw_enter_write(ffff800010fcb018) at rw_enter_write+0x5f sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800010fcb000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000ffff2398) at unveil_destroy+0x9d sys/kern/kern_unveil.c:183 exit1(ffff80002a1567e8,0,0,1) at exit1+0x3d9 sys/kern/kern_exit.c:218 sys_exit(ffff80002a1567e8,ffff800033d26120,ffff800033d26070) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800033d26120) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff800033d26120) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a41af7f2840, count: 249 End of stack trace. Stopped at db_enter+0x1c: 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+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800010fcb028,9,0) at witness_checkorder+0x140 rw_enter_write(ffff800010fcb018) at rw_enter_write+0x5f sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800010fcb000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000ffff2398) at unveil_destroy+0x9d sys/kern/kern_unveil.c:183 exit1(ffff80002a1567e8,0,0,1) at exit1+0x3d9 sys/kern/kern_exit.c:218 sys_exit(ffff80002a1567e8,ffff800033d26120,ffff800033d26070) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800033d26120) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff800033d26120) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a41af7f2840, count: -9 ddb{0}> show registers rdi 0 rsi 0x4000000000000000 rbp 0xffff800033d25de0 rbx 0 rdx 0 rcx 0xffff80002a1567e8 rax 0xffffffff82ccbff0 cpu_info_full_primary+0x1ff0 r8 0xffff800033d25d80 r9 0x8080808080808080 r10 0xffff800033d25cd0 r11 0x15e810d82ce4b72d r12 0 r13 0x1 r14 0xffff800010fcb028 r15 0x3 rip 0xffffffff8201acac db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff800033d25dd0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.3) tid=481198 pid=17197 tcnt=1 stat=onproc flags process=8001008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a1567e8 forw=0xffffffffffffffff, list=0xffff8000ffff54a8,0xffff80002a156fa8 process=0xffff8000ffff2398 user=0xffff800033d21000, vmspace=0xfffffd8070a791c0 estcpu=36, cpticks=12, pctcpu=0.0, user=0, sys=9, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 5294 371677 11632 0 2 0x8000000 syz-executor.4 83948 522338 30686 0 2 0x8000000 syz-executor.2 83948 79722 30686 0 2 0xc000000 syz-executor.2 23148 186517 42138 0 2 0x8000000 syz-executor.5 23148 47482 42138 0 2 0xc000000 syz-executor.5 23148 116127 42138 0 3 0xc000080 fsleep syz-executor.5 73637 240875 1 0 2 0x18100083 getty 37071 17064 22176 0 2 0x8000482 syz-executor.6 70634 85085 22176 0 2 0x8000482 syz-executor.1 87740 439412 22176 0 2 0x8000482 syz-executor.3 73432 362386 22176 0 2 0x8000002 syz-executor.0 71165 86170 22176 0 2 0x8000482 syz-executor.7 73374 470413 0 0 3 0x14200 acct acct 30686 465088 22176 0 2 0x8000482 syz-executor.2 11632 400872 22176 0 2 0x8000482 syz-executor.4 40768 37553 0 0 3 0x14280 nfsidl nfsio 40057 301902 0 0 3 0x14280 nfsidl nfsio 57306 113335 0 0 3 0x14280 nfsidl nfsio 59658 101431 0 0 3 0x14280 nfsidl nfsio 6489 57895 0 0 3 0x14280 nfsidl nfsio 62187 368713 0 0 3 0x14280 nfsidl nfsio 68167 519862 0 0 3 0x14280 nfsidl nfsio 36753 263692 0 0 3 0x14280 nfsidl nfsio 84233 193205 0 0 3 0x14280 nfsidl nfsio 30164 437636 0 0 3 0x14280 nfsidl nfsio 42114 410518 0 0 3 0x14280 nfsidl nfsio 76225 243039 0 0 3 0x14280 nfsidl nfsio 71799 9438 0 0 3 0x14280 nfsidl nfsio 65934 441431 0 0 3 0x14280 nfsidl nfsio 76751 54894 0 0 3 0x14280 nfsidl nfsio 7344 258882 0 0 3 0x14280 nfsidl nfsio 92801 151886 0 0 3 0x14280 nfsidl nfsio 87040 118017 0 0 3 0x14280 nfsidl nfsio 86921 354155 0 0 3 0x14280 nfsidl nfsio 31958 477315 0 0 3 0x14280 nfsidl nfsio 39181 352649 0 0 3 0x14200 bored sosplice 42138 278061 22176 0 2 0x8000482 syz-executor.5 22176 15863 33879 0 3 0x1a000082 wait syz-fuzzer 22176 158359 33879 0 2 0x1e000482 syz-fuzzer 22176 131880 33879 0 3 0x1e000082 thrsleep syz-fuzzer 22176 27944 33879 0 3 0x1e000082 wait syz-fuzzer 22176 263981 33879 0 3 0x1e000082 thrsleep syz-fuzzer 22176 22440 33879 0 3 0x1e000082 thrsleep syz-fuzzer 22176 50757 33879 0 3 0x1e000082 wait syz-fuzzer 22176 400970 33879 0 3 0x1e000082 wait syz-fuzzer 22176 230476 33879 0 3 0x1e000082 thrsleep syz-fuzzer 22176 8156 33879 0 3 0x1e000082 wait syz-fuzzer 22176 263072 33879 0 3 0x1e000082 thrsleep syz-fuzzer 22176 501265 33879 0 3 0x1e000082 kqread syz-fuzzer 22176 360475 33879 0 3 0x1e000082 thrsleep syz-fuzzer 22176 196038 33879 0 3 0x1e000082 wait syz-fuzzer 22176 441072 33879 0 3 0x1e000082 wait syz-fuzzer 22176 422339 33879 0 3 0x1e000082 wait syz-fuzzer 33879 275267 64952 0 3 0x810008a sigsusp ksh 64952 491825 76402 0 3 0x1800009a kqread sshd 76402 22512 1 0 3 0x18000088 kqread sshd 18199 310052 49184 73 2 0x19100090 syslogd 49184 87763 1 0 3 0x18100082 sbwait syslogd 79687 139704 1 0 3 0x18100080 kqread resolvd 89871 339959 29707 77 3 0x18100092 kqread dhcpleased 34240 328985 29707 77 3 0x18100092 kqread dhcpleased 29707 208609 1 0 3 0x18000080 kqread dhcpleased 98399 462397 0 0 3 0x14200 bored smr 54021 464563 0 0 2 0x14200 zerothread 9885 227972 0 0 3 0x14200 aiodoned aiodoned 55350 325349 0 0 3 0x14200 syncer update 58689 399301 0 0 3 0x14200 cleaner cleaner 88032 394108 0 0 7 0x14200 reaper 38065 466621 0 0 3 0x14200 pgdaemon pagedaemon 17401 294004 0 0 3 0x14200 bored viomb 36461 436382 0 0 3 0x40014200 acpi0 acpi0 24441 73175 0 0 3 0x40014200 idle1 40865 477303 0 0 3 0x14200 bored softnet3 26091 151238 0 0 3 0x14200 bored softnet2 38804 410656 0 0 3 0x14200 bored softnet1 30326 211999 0 0 3 0x14200 bored softnet0 75585 138556 0 0 3 0x14200 bored systqmp 90233 277652 0 0 3 0x14200 bored systq 26246 183111 0 0 3 0x14200 tmoslp softclockmp 69627 74564 0 0 2 0x40014200 softclock 68410 494044 0 0 3 0x40014200 idle0 1 450928 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 23148 (syz-executor.5) thread 0xffff8000ffff4028 (47482) exclusive rwlock vmmaplk r = 0 (0xfffffd8070a79620) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0xfa sys/uvm/uvm_map.c:5291 #3 sys_munmap+0x14e sys/uvm/uvm_mmap.c:526 #4 syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] #4 syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 Process 73432 (syz-executor.0) thread 0xffff8000ffff79b8 (362386) exclusive rrwlock inode r = 0 (0xfffffd807081d2c8) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x91 sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 sys_getdents+0x1be sys/kern/vfs_syscalls.c:3132 #6 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #6 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10203 6443K 7130K 166960K 13689 0 pcb 17 12K 12K 166960K 424 0 rtable 223 7K 8K 166960K 1278 0 pf 31 9K 10K 166960K 181 0 ifaddr 43 15K 16K 166960K 188 0 ifgroup 54 2K 2K 166960K 279 0 sysctl 4 1K 2K 166960K 7 0 counters 66 36K 36K 166960K 188 0 ioctlops 0 0K 4K 166960K 1631 0 iov 0 0K 18K 166960K 157 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1435 90K 91K 166960K 3234 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 78 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 241 0 dirhash 12 2K 2K 166960K 78 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 14 49K 85K 166960K 2985 0 sigio 0 0K 0K 166960K 87 0 proc 65 103K 115K 166960K 1410 0 subproc 104 6K 7K 166960K 391 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 460 0 in_multi 84 6K 7K 166960K 448 0 ether_multi 1 0K 0K 166960K 22 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 169 758K 758K 166960K 169 0 exec 0 0K 1K 166960K 1064 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 301 183K 194K 166960K 28441 0 UVM aobj 93 7K 7K 166960K 102 0 pinsyscall 35 70K 100K 166960K 4747 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 210 0 NDP 12 0K 1K 166960K 135 0 temp 74 6820K 6948K 166960K 114109 0 kqueue 12 18K 28K 166960K 479 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 120 438 0 435 4 3 1 3 0 8 0 rtentry 112 425 0 327 4 0 4 4 0 8 0 unpcb 144 2751 0 2736 19 18 1 6 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 44 0 44 3 3 0 1 0 8 0 tcpcb 808 871 0 866 16 14 2 7 0 8 1 arp 120 77 0 60 1 0 1 1 0 8 0 inpcb 384 3403 0 3394 44 42 2 11 0 8 1 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 136 110 0 88 1 0 1 1 0 8 0 pkpcb 40 14 0 14 8 7 1 1 0 8 1 kcovpl 48 30 0 22 1 0 1 1 0 8 0 ppxss 1168 20 0 20 9 9 0 1 0 8 0 pffrag 232 23 0 20 3 2 1 1 0 482 0 pffrnode 88 23 0 20 3 2 1 1 0 8 0 pffrent 40 168 0 165 3 2 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 24 255 0 209 1 0 1 1 0 8 0 pfstkey 128 255 0 209 2 0 2 2 0 8 0 pfstate 376 255 0 209 9 3 6 6 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1568 0 1164 37 10 27 29 0 8 0 art_table 32 1569 0 1164 4 0 4 4 0 8 0 art_node 16 422 0 333 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 13 1 0 1 1 0 8 0 semapl 112 235 0 225 1 0 1 1 0 8 0 shmpl 112 99 0 9 3 0 3 3 0 8 0 dirhash 1024 61 0 44 3 0 3 3 0 8 0 dino2pl 256 6415 0 4883 97 0 97 97 0 8 0 ffsino 272 6415 0 4883 103 0 103 103 0 8 0 nchpl 144 10821 0 9088 67 0 67 67 0 8 0 uvmvnodes 80 7442 0 0 152 0 152 152 0 8 0 vnodes 216 7442 0 0 414 0 414 414 0 8 0 namei 1024 38632 0 38632 10 8 2 3 0 8 2 percpumem 16 108 0 61 1 0 1 1 0 8 0 vcpupl 3904 12 0 0 2 0 2 2 0 8 0 vmpool 696 18 0 6 4 2 2 2 0 8 0 kstatmem 264 146 0 122 2 0 2 2 0 8 0 scsiplug 72 5 0 5 1 1 0 1 0 8 0 scxspl 216 72430 0 72430 16 15 1 8 1 8 1 plimitpl 152 601 0 584 1 0 1 1 0 8 0 sigapl 424 3277 0 3209 8 0 8 8 0 8 0 futexpl 64 44480 0 44479 8 7 1 1 0 8 0 knotepl 120 608 0 0 11 0 11 11 0 8 0 kqueuepl 216 918 0 909 4 3 1 2 0 8 0 pipepl 320 693 0 665 16 13 3 8 0 8 0 fdescpl 496 3236 0 3211 7 3 4 5 0 8 0 filepl 152 22992 0 22749 48 35 13 19 0 8 1 lockfpl 104 700 0 698 1 0 1 1 0 8 0 lockfspl 48 296 0 294 1 0 1 1 0 8 0 sessionpl 144 48 0 32 1 0 1 1 0 8 0 pgrppl 48 88 0 72 1 0 1 1 0 8 0 ucredpl 104 4406 0 4394 1 0 1 1 0 8 0 zombiepl 144 3348 0 3344 2 1 1 1 0 8 0 processpl 1136 3277 0 3209 7 1 6 6 0 8 0 procpl 656 6911 0 6823 10 1 9 9 0 8 0 srpgc 96 9 0 9 4 4 0 1 0 8 0 sosppl 168 50 0 50 12 11 1 1 0 8 1 sockpl 664 6656 0 6629 67 63 4 19 0 8 1 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 436 0 0 43 6 37 43 0 8 0 mtagpl 96 53 0 0 2 0 2 2 0 8 0 mbufpl 256 689 0 0 29 0 29 29 0 8 0 bufpl 280 13570 0 4681 636 0 636 636 0 8 0 anonpl 24 559632 0 553497 166 107 59 96 0 186 0 amapchunkpl 152 95109 0 94444 89 55 34 50 0 158 2 amappl16 200 12177 0 12036 134 115 19 31 0 8 8 amappl15 192 26 0 25 1 0 1 1 0 8 0 amappl14 184 225 0 214 2 1 1 2 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 4227 0 4198 3 1 2 3 0 8 0 amappl11 160 50 0 40 1 0 1 1 0 8 0 amappl10 152 66 0 57 1 0 1 1 0 8 0 amappl9 144 184 0 184 3 3 0 1 0 8 0 amappl8 136 225 0 187 2 0 2 2 0 8 0 amappl7 128 62 0 45 1 0 1 1 0 8 0 amappl6 120 638 0 625 2 1 1 2 0 8 0 amappl5 112 259 0 247 1 0 1 1 0 8 0 amappl4 104 734 0 702 2 1 1 2 0 8 0 amappl3 96 17858 0 17783 3 0 3 3 0 8 0 amappl2 88 3718 0 3649 3 1 2 3 0 8 0 amappl1 80 19822 0 19342 22 10 12 22 0 8 0 amappl 88 27526 0 27326 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 72 101 0 9 2 0 2 2 0 8 0 uaddrrnd 24 3254 0 3216 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3254 0 3216 1 0 1 1 0 8 0 vmmpekpl 168 27207 0 27129 4 0 4 4 0 8 0 vmmpepl 168 213951 0 212115 190 97 93 112 0 357 0 vmsppl 440 3253 0 3215 6 1 5 5 0 8 0 rwobjpl 56 63481 0 54859 139 14 125 125 0 8 0 pdppl 4096 6515 0 6442 210 133 77 80 0 8 4 pvpl 32 44877 0 0 365 3 362 362 0 265 0 pmappl 248 3253 0 3215 6 3 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 565 0 183 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff800010fcb028,9,0) at witness_checkorder+0x140 rw_enter_write(ffff800010fcb018) at rw_enter_write+0x5f sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800010fcb000) at unveil_delete_names+0x34 sys/kern/kern_unveil.c:102 unveil_destroy(ffff8000ffff2398) at unveil_destroy+0x9d sys/kern/kern_unveil.c:183 exit1(ffff80002a1567e8,0,0,1) at exit1+0x3d9 sys/kern/kern_exit.c:218 sys_exit(ffff80002a1567e8,ffff800033d26120,ffff800033d26070) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff800033d26120) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff800033d26120) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a41af7f2840, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e 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+0x27 __mp_lock(ffffffff82d78770) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82d78770) at __mp_lock+0x122 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff80002a155310,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1371 uvm_map_teardown(fffffd8062d928b0) at uvm_map_teardown+0x2f8 sys/uvm/uvm_map.c:2554 uvmspace_free(fffffd8062d928b0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 reaper(ffff80002a148f68) at reaper+0x197 sys/kern/kern_exit.c:463 end trace frame: 0x0, count: -8