witness: lock_object uninitialized: 0xffff8000014e0030 Starting stack trace... witness_checkorder(ffff8000014e0030,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff8000014e0030,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_do_enter_write(ffff8000014e0018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014e0000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c55eb50) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80003c4d2f98,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80003c4d2f98,ffff80003c56a300,ffff80003c56a250) at sys_exit+0x1a syscall(ffff80003c56a300) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c56a300) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fc76b837f30, 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(ffff8000014e0030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000014e0018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014e0000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c55eb50) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80003c4d2f98,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80003c4d2f98,ffff80003c56a300,ffff80003c56a250) at sys_exit+0x1a syscall(ffff80003c56a300) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c56a300) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fc76b837f30, count: -9 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c569f90 rbx 0 rdx 0 rcx 0xffff80003c4d2f98 rax 0xffffffff83851ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80003c569f30 r9 0x8080808080808080 r10 0xf7303e41feb25fc6 r11 0x9760c55f1d47a59d r12 0 r13 0x1 r14 0xffff8000014e0030 r15 0x3 rip 0xffffffff81441685 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c569f80 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=155372 pid=55857 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c4d2f98 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c4d2d08,0xffff8000ffffd208 process=0xffff80003c55eb50 user=0xffff80003c565000, vmspace=0xfffffd8064179028 estcpu=36, cpticks=11, pctcpu=0.0, user=0, sys=8, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 17311 90686 77453 0 2 0 syz-executor 16974 413039 52606 0 2 0 syz-executor 16974 19532 52606 0 7 0x4000001 syz-executor 16974 87578 52606 0 3 0x4000080 fsleep syz-executor 6040 484975 66923 0 2 0 syz-executor 6040 287568 66923 0 3 0x4000080 lockf syz-executor 6040 488513 66923 0 2 0x4000000 syz-executor 1278 433987 21180 0 2 0 syz-executor 1278 107835 21180 0 2 0x4000000 syz-executor 30690 81661 52371 0 2 0 syz-executor 30690 290077 52371 0 2 0x4000000 syz-executor 16251 137839 65132 0 3 0x82 sbwait sshd-session 80667 241649 0 0 3 0x14200 acct acct 80956 316119 65132 0 3 0x82 sbwait sshd-session 77453 354963 67657 0 2 0x482 syz-executor 52606 279170 67657 0 2 0x482 syz-executor 52371 386085 67657 0 2 0x482 syz-executor 63548 340546 1 0 2 0x100083 getty 10977 410487 0 0 3 0x14200 bored sosplice 66923 437786 67657 0 2 0x482 syz-executor 89865 19168 67657 0 2 0x482 syz-executor 21180 125578 67657 0 2 0x482 syz-executor 17850 77195 67657 0 2 0x482 syz-executor 72132 22959 67657 0 2 0x2 syz-executor 67657 478826 89071 0 3 0x82 kqread syz-executor 89071 396488 53213 0 3 0x10008a sigsusp ksh 53213 37785 86722 0 3 0x98 kqread sshd-session 86722 19902 65132 0 3 0x92 kqread sshd-session 65132 211639 1 0 3 0x88 kqread sshd 85352 497801 543 74 3 0x1100092 bpf pflogd 543 33002 1 0 3 0x80 sbwait pflogd 88639 52515 2500 73 2 0x1100090 syslogd 2500 221243 1 0 3 0x100082 sbwait syslogd 35503 291045 1 0 3 0x100080 kqread resolvd 49049 44278 58075 77 3 0x100092 kqread dhcpleased 62483 485092 58075 77 3 0x100092 kqread dhcpleased 58075 438595 1 0 3 0x80 kqread dhcpleased 9687 177069 0 0 3 0x14200 bored smr 38989 252848 0 0 2 0x14200 zerothread 94280 166246 0 0 3 0x14200 aiodoned aiodoned 57816 186240 0 0 3 0x14200 syncer update 12310 434432 0 0 3 0x14200 cleaner cleaner 19897 217414 0 0 2 0x14200 reaper 34861 287965 0 0 3 0x14200 pgdaemon pagedaemon 32238 77326 0 0 3 0x14200 bored viomb 70509 220024 0 0 3 0x40014200 acpi0 acpi0 29281 359117 0 0 3 0x40014200 idle1 41416 278940 0 0 3 0x14200 bored softnet3 31757 125765 0 0 3 0x14200 bored softnet2 53025 356817 0 0 3 0x14200 bored softnet1 60314 281958 0 0 2 0x14200 softnet0 80226 187483 0 0 3 0x14200 bored systqmp 78804 359540 0 0 3 0x14200 bored systq 99674 159288 0 0 2 0x14200 softclockmp 84107 2648 0 0 3 0x40014200 tmoslp softclock 83365 304478 0 0 3 0x40014200 idle0 1 53373 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 30690 (syz-executor) thread 0xffff80003c4d39d8 (290077) exclusive rwlock fdlock r = 0 (0xfffffd806beb4a50) #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 doopenat+0x173 #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 72132 (syz-executor) thread 0xffff80002a3662a8 (22959) exclusive rrwlock inode r = 0 (0xfffffd806dd73408) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3102 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ccb11e8) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3087 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 19897 (reaper) thread 0xffff8000ffffcf68 (217414) exclusive rwlock kmmaplk r = 0 (0xffffffff838cfdb0) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10196 11040K 11363K 166960K 12607 0 pcb 17 14K 16K 166960K 266 0 rtable 125 6K 8K 166960K 605 0 pf 26 16K 18K 166960K 118 0 ifaddr 24 4K 8K 166960K 99 0 ifgroup 39 1K 2K 166960K 160 0 sysctl 4 1K 1K 166960K 10 0 counters 56 35K 37K 166960K 144 0 ioctlops 0 0K 4K 166960K 1570 0 iov 0 0K 14K 166960K 174 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1388 87K 88K 166960K 2049 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 30 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 59 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 93K 166960K 1094 0 sigio 0 0K 0K 166960K 7 0 proc 78 115K 128K 166960K 714 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 167 0 in_multi 42 3K 7K 166960K 172 0 ether_multi 1 0K 0K 166960K 5 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 541 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 4K 166960K 65 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 251 88K 88K 166960K 12114 0 UVM aobj 52 6K 6K 166960K 56 0 pinsyscall 45 90K 104K 166960K 2312 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 49 0 NDP 8 0K 2K 166960K 70 0 temp 79 8644K 8713K 166960K 46743 0 kqueue 13 20K 28K 166960K 201 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 120 200 0 197 4 1 3 3 0 8 2 rtentry 112 169 0 120 4 0 4 4 0 8 0 unpcb 144 856 0 839 11 7 4 6 0 8 3 syncache 336 15 0 14 3 2 1 1 0 8 0 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 808 319 0 306 9 7 2 8 0 8 0 arp 120 28 0 18 1 0 1 1 0 8 0 inpcb 376 1262 0 1245 18 12 6 9 0 8 3 nd6 136 35 0 26 1 0 1 1 0 8 0 pkpcb 40 68 0 68 1 1 0 1 0 8 0 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1168 25 0 25 2 1 1 1 0 8 1 pppxif 1472 4 0 4 2 2 0 1 0 8 0 pffrag 232 7 0 3 2 1 1 1 0 482 0 pffrnode 88 7 0 3 2 1 1 1 0 8 0 pffrent 40 10 0 6 2 1 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 67 0 29 1 0 1 1 0 8 0 pfstkey 128 67 0 29 2 0 2 2 0 8 0 pfstate 376 67 0 29 5 0 5 5 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 771 0 558 32 8 24 31 0 8 4 art_table 32 775 0 558 4 0 4 4 0 8 0 art_node 16 167 0 123 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 1 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 56 0 46 1 0 1 1 0 8 0 shmpl 112 53 0 4 2 0 2 2 0 8 0 dirhash 1024 36 0 19 3 0 3 3 0 8 0 dino2pl 256 3289 0 1782 95 0 95 95 0 8 0 ffsino 280 3289 0 1782 109 0 109 109 0 8 0 nchpl 144 4852 0 3158 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 1 0 1 0 8 0 uvmvnodes 80 3748 0 0 77 0 77 77 0 8 0 vnodes 216 3748 0 0 209 0 209 209 0 8 0 namei 1024 16728 0 16726 3 2 1 2 0 8 0 percpumem 16 86 0 44 1 0 1 1 0 8 0 kstatmem 264 88 0 72 3 1 2 3 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 14805 0 14805 11 9 2 8 1 8 2 plimitpl 152 307 0 290 1 0 1 1 0 8 0 sigapl 424 1421 0 1368 9 1 8 9 0 8 0 futexpl 64 14420 0 14419 1 0 1 1 0 8 0 knotepl 120 595 0 0 18 0 18 18 0 8 0 kqueuepl 216 400 0 391 4 3 1 4 0 8 0 pipepl 328 300 0 271 8 5 3 8 0 8 0 fdescpl 504 1381 0 1350 5 0 5 5 0 8 0 filepl 152 8882 0 8650 28 13 15 18 0 8 4 lockfpl 104 497 0 493 2 1 1 2 0 8 0 lockfspl 48 220 0 217 1 0 1 1 0 8 0 sessionpl 144 37 0 26 1 0 1 1 0 8 0 pgrppl 48 59 0 40 1 0 1 1 0 8 0 ucredpl 104 1416 0 1401 1 0 1 1 0 8 0 zombiepl 144 1889 0 1887 1 0 1 1 0 8 0 processpl 1168 1421 0 1368 6 2 4 6 0 8 0 procpl 656 3099 0 3038 10 3 7 8 0 8 0 srpgc 96 14 0 14 4 3 1 1 0 8 1 sosppl 168 5 0 5 3 2 1 1 0 8 1 sockpl 688 2399 0 2362 32 20 12 15 0 8 7 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 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 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 127 0 0 16 0 16 16 0 8 0 mcl2k 2048 38 0 0 5 0 5 5 0 8 0 mtagpl 96 14 0 0 1 0 1 1 0 8 0 mbufpl 256 312 0 0 20 0 20 20 0 8 0 bufpl 280 5520 0 137 385 0 385 385 0 8 0 anonpl 24 207125 0 201440 86 20 66 66 0 184 24 amapchunkpl 152 38601 0 37822 38 6 32 32 0 158 0 amappl16 200 4055 0 3993 28 14 14 19 0 8 8 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 146 0 131 1 0 1 1 0 8 0 amappl13 176 9 0 9 2 1 1 1 0 8 1 amappl12 168 2081 0 2048 4 2 2 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 267 0 267 1 1 0 1 0 8 0 amappl8 136 42 0 39 1 0 1 1 0 8 0 amappl7 128 120 0 106 1 0 1 1 0 8 0 amappl6 120 217 0 212 1 0 1 1 0 8 0 amappl5 112 140 0 131 1 0 1 1 0 8 0 amappl4 104 385 0 366 1 0 1 1 0 8 0 amappl3 96 7804 0 7687 5 1 4 5 0 8 0 amappl2 88 798 0 723 2 0 2 2 0 8 0 amappl1 80 13605 0 12861 18 2 16 16 0 8 0 amappl 88 11600 0 11418 6 1 5 6 0 92 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 0 1 1 0 8 1 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 55 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1381 0 1348 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1381 0 1348 1 0 1 1 0 8 0 vmmpekpl 168 13418 0 13358 4 0 4 4 0 8 0 vmmpepl 168 92751 0 90573 119 7 112 112 0 357 12 vmsppl 456 1380 0 1348 6 1 5 5 0 8 0 rwobjpl 64 31630 0 26661 84 0 84 84 0 8 0 pdppl 4096 2769 0 2696 115 40 75 85 0 8 2 pvpl 32 19631 0 0 159 1 158 158 0 265 0 pmappl 248 1380 0 1348 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 326 0 65 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(ffff8000014e0030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff8000014e0018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff8000014e0000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80003c55eb50) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80003c4d2f98,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80003c4d2f98,ffff80003c56a300,ffff80003c56a250) at sys_exit+0x1a syscall(ffff80003c56a300) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c56a300) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6fc76b837f30, 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+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c 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 ktrsyscall(ffff80002a376fa8,87,20,ffff80002a47c4e0) at ktrsyscall+0x2b3 sys/kern/kern_ktrace.c:183 syscall(ffff80002a47c4e0) at syscall+0x2e6 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80002a47c4e0) at syscall+0x2e6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaabc604dc40, count: -8