witness: lock_object uninitialized: 0xffff80000135a028 Starting stack trace... witness_checkorder(ffff80000135a028,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff80000135a028,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_enter_write(ffff80000135a018) at rw_enter_write+0x7a sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff80000135a000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002e374018) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff800032f88cd8,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff800032f88cd8,ffff800037230f90,ffff800037230ee0) at sys_exit+0x1a syscall(ffff800037230f90) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037230f90) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x784261fe77f0, count: 249 End of stack trace. Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff80000135a028,9,0) at witness_checkorder+0x1b4 rw_enter_write(ffff80000135a018) at rw_enter_write+0x7a sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff80000135a000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002e374018) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff800032f88cd8,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff800032f88cd8,ffff800037230f90,ffff800037230ee0) at sys_exit+0x1a syscall(ffff800037230f90) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037230f90) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x784261fe77f0, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800037230c60 rbx 0 rdx 0 rcx 0xffff800032f88cd8 rax 0xffff800029b7bff0 r8 0xffff800037230c00 r9 0x8080808080808080 r10 0xa078c73a2ab50ac7 r11 0x44a216bd03c5d006 r12 0 r13 0x1 r14 0xffff80000135a028 r15 0x3 rip 0xffffffff81ac00e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800037230c50 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=150495 pid=3046 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800032f88cd8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000371e62c8,0xffffffff836345a0 process=0xffff80002e374018 user=0xffff80003722c000, vmspace=0xfffffd806bf1be20 estcpu=36, cpticks=10, pctcpu=0.0, user=0, sys=9, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 99230 188770 73165 0 3 0x80 nanoslp syz-executor 99230 275395 73165 0 3 0x4000080 sbwait syz-executor 99230 240422 73165 0 3 0x4000080 fsleep syz-executor 11452 280220 2253 0 3 0x80 nanoslp syz-executor 11452 64124 2253 0 3 0x4000080 kqsel syz-executor 11452 272623 2253 0 3 0x4000080 fsleep syz-executor 18070 270382 25798 0 3 0x90 nanoslp syz-executor 18070 10139 25798 0 3 0x4000090 pipewr syz-executor 18070 379675 25798 0 3 0x4000090 fsleep syz-executor 5189 335767 41533 0 3 0x80 nanoslp syz-executor 5189 239953 41533 0 3 0x4000080 netcon syz-executor 5189 194847 41533 0 3 0x4000080 fsleep syz-executor 40046 75564 1 0 3 0x100083 ttyin getty 12141 453502 41325 0 3 0x82 wait syz-executor 25798 464737 41325 0 3 0x82 nanoslp syz-executor 53785 379350 0 0 3 0x14200 acct acct 73165 221073 41325 0 3 0x82 nanoslp syz-executor 61437 7367 0 0 3 0x14200 bored sosplice 97744 10772 41325 0 7 0x2 syz-executor 35642 487084 41325 0 3 0x2 biowait syz-executor 41533 316645 41325 0 3 0x82 nanoslp syz-executor 2253 426698 41325 0 3 0x82 nanoslp syz-executor 84304 407453 41325 0 3 0x82 nanoslp syz-executor 41325 162227 48258 0 3 0x82 kqread syz-executor 48258 424726 90033 0 3 0x10008a sigsusp ksh 90033 32959 8474 0 3 0x98 kqread sshd-session 8474 443271 41688 0 3 0x92 kqread sshd-session 41688 504338 1 0 3 0x88 kqread sshd 26709 384139 62767 74 3 0x1100092 bpf pflogd 62767 280925 1 0 3 0x80 sbwait pflogd 29596 469093 23235 73 3 0x1100090 kqread syslogd 23235 84349 1 0 3 0x100082 sbwait syslogd 81178 439066 1 0 3 0x100080 kqread resolvd 31875 133224 35379 77 3 0x100092 kqread dhcpleased 71783 373202 35379 77 3 0x100092 kqread dhcpleased 35379 375202 1 0 3 0x80 kqread dhcpleased 32478 83026 0 0 3 0x14200 bored smr 38638 313884 0 0 3 0x14200 pgzero zerothread 37391 347909 0 0 3 0x14200 aiodoned aiodoned 8757 175923 0 0 3 0x14200 syncer update 82095 19023 0 0 3 0x14200 cleaner cleaner 63822 448668 0 0 3 0x14200 reaper reaper 30928 35985 0 0 3 0x14200 pgdaemon pagedaemon 74356 227723 0 0 3 0x14200 bored viomb 19962 80823 0 0 3 0x40014200 acpi0 acpi0 90786 162951 0 0 3 0x40014200 idle1 73495 489605 0 0 3 0x14200 bored softnet3 51075 17937 0 0 3 0x14200 bored softnet2 80056 176439 0 0 3 0x14200 bored softnet1 62842 220864 0 0 3 0x14200 bored softnet0 38671 445470 0 0 3 0x14200 bored systqmp 98471 34818 0 0 3 0x14200 bored systq 69835 419489 0 0 3 0x14200 tmoslp softclockmp 41411 369946 0 0 3 0x40014200 tmoslp softclock 98964 387084 0 0 3 0x40014200 idle0 1 277534 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 97744 (syz-executor) thread 0xffff8000ffff6530 (10772) exclusive rrwlock inode r = 0 (0xfffffd806e0f04e8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:292 [inline] #5 vn_closefile+0x111 sys/kern/vfs_vnops.c:609 #6 fdrop+0x126 sys/kern/kern_descrip.c:1274 #7 closef+0x192 sys/kern/kern_descrip.c:1258 #8 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #8 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 35642 (syz-executor) thread 0xffff8000ffff62a8 (487084) exclusive rrwlock inode r = 0 (0xfffffd806dd38d68) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:169 #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:3099 #10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c68d1a8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #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:3084 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10200 11145K 11597K 166960K 14251 0 pcb 18 16K 17K 166960K 441 0 rtable 174 6K 9K 166960K 769 0 pf 31 17K 25K 166960K 101 0 ifaddr 34 6K 8K 166960K 104 0 ifgroup 50 2K 2K 166960K 144 0 sysctl 3 0K 0K 166960K 3 0 counters 60 35K 36K 166960K 112 0 ioctlops 0 0K 4K 166960K 1782 0 iov 0 0K 20K 166960K 114 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1513 95K 95K 166960K 2872 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 5K 13K 166960K 33 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 105 0 dirhash 12 2K 2K 166960K 69 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 15 53K 93K 166960K 2225 0 sigio 0 0K 0K 166960K 39 0 proc 74 115K 140K 166960K 871 0 subproc 104 6K 6K 166960K 173 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 470 0 in_multi 71 5K 7K 166960K 325 0 ether_multi 2 0K 0K 166960K 27 0 mrt 1 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 805 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 247 73K 88K 166960K 22958 0 UVM aobj 65 7K 7K 166960K 74 0 pinsyscall 41 82K 108K 166960K 3492 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 1K 166960K 145 0 NDP 10 0K 2K 166960K 73 0 temp 77 6828K 7070K 166960K 92745 0 kqueue 13 20K 28K 166960K 377 0 SYN cache 2 10K 18K 166960K 3 0 ddb{1}> 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 120 355 0 351 5 4 1 3 0 8 0 rtentry 112 216 0 141 4 0 4 4 0 8 0 unpcb 144 1477 0 1459 13 9 4 6 0 8 3 syncache 336 9 0 9 3 3 0 1 0 8 0 tcpqe 32 3 0 3 2 2 0 1 0 8 0 tcpcb 808 729 0 719 14 12 2 8 0 8 1 arp 120 35 0 23 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 336 2746 0 2726 23 21 2 10 0 8 0 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 49 0 28 1 0 1 1 0 8 0 pkpcb 40 83 0 83 4 3 1 1 0 8 1 kcovpl 48 13 0 5 1 0 1 1 0 8 0 ppxss 1168 9 0 9 4 4 0 1 0 8 0 pffrag 232 16 0 4 1 0 1 1 0 482 0 pffrnode 88 15 0 4 1 0 1 1 0 8 0 pffrent 40 31 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 24 141 0 53 1 0 1 1 0 8 0 pfstkey 128 141 0 53 3 0 3 3 0 8 0 pfstate 376 141 0 53 10 0 10 10 0 8 0 pfrule 1344 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 972 0 627 31 4 27 31 0 8 2 art_table 32 976 0 627 5 0 5 5 0 8 0 art_node 16 208 0 143 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 100 0 90 1 0 1 1 0 8 0 shmpl 112 71 0 9 2 0 2 2 0 8 0 dirhash 1024 55 0 38 3 0 3 3 0 8 0 dino2pl 256 5260 0 3746 96 0 96 96 0 8 0 ffsino 272 5260 0 3746 102 0 102 102 0 8 0 nchpl 144 8439 0 7887 64 39 25 64 0 8 0 uvmvnodes 80 5927 0 0 121 0 121 121 0 8 0 vnodes 216 5927 0 0 330 0 330 330 0 8 0 namei 1024 32339 0 32338 8 7 1 4 0 8 0 percpumem 16 70 0 26 1 0 1 1 0 8 0 kstatmem 264 72 0 52 2 0 2 2 0 8 0 scsiplug 72 10 0 10 4 4 0 1 0 8 0 scxspl 216 25573 0 25572 12 11 1 8 1 8 0 plimitpl 152 446 0 428 1 0 1 1 0 8 0 sigapl 424 2552 0 2502 11 3 8 9 0 8 0 futexpl 64 32562 0 32558 1 0 1 1 0 8 0 knotepl 120 561 0 0 17 0 17 17 0 8 0 kqueuepl 216 621 0 611 3 2 1 3 0 8 0 pipepl 320 464 0 436 8 5 3 8 0 8 0 fdescpl 496 2512 0 2483 6 1 5 5 0 8 0 filepl 152 17850 0 17589 29 16 13 18 0 8 2 lockfpl 104 886 0 884 2 1 1 2 0 8 0 lockfspl 48 320 0 318 1 0 1 1 0 8 0 sessionpl 144 35 0 26 1 0 1 1 0 8 0 pgrppl 48 86 0 69 1 0 1 1 0 8 0 ucredpl 104 3580 0 3561 1 0 1 1 0 8 0 zombiepl 144 3057 0 3055 1 0 1 1 0 8 0 processpl 1160 2552 0 2502 7 2 5 6 0 8 0 procpl 648 6112 0 6054 9 1 8 8 0 8 1 srpgc 96 19 0 19 3 2 1 1 0 8 1 sosppl 168 14 0 13 4 3 1 1 0 8 0 sockpl 664 4687 0 4645 41 32 9 21 0 8 5 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 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 158 0 0 20 0 20 20 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 84 0 0 10 0 10 10 0 8 0 mtagpl 96 95 0 0 3 0 3 3 0 8 0 mbufpl 256 1279 0 0 79 0 79 79 0 8 0 bufpl 280 8033 0 1859 442 0 442 442 0 8 0 anonpl 24 382908 0 376492 108 47 61 72 0 185 10 amapchunkpl 152 75760 0 75147 54 18 36 36 0 158 7 amappl16 200 9087 0 8978 49 35 14 19 0 8 5 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 146 0 134 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 3278 0 3248 3 1 2 2 0 8 0 amappl11 160 56 0 42 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 1 0 1 0 8 0 amappl9 144 129 0 128 1 0 1 1 0 8 0 amappl8 136 74 0 71 1 0 1 1 0 8 0 amappl7 128 130 0 117 1 0 1 1 0 8 0 amappl6 120 217 0 216 1 0 1 1 0 8 0 amappl5 112 164 0 152 1 0 1 1 0 8 0 amappl4 104 368 0 348 1 0 1 1 0 8 0 amappl3 96 14005 0 13905 3 0 3 3 0 8 0 amappl2 88 2873 0 2787 3 0 3 3 0 8 0 amappl1 80 15787 0 15224 15 1 14 14 0 8 0 amappl 88 22352 0 22167 5 0 5 5 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 128 254 0 254 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 73 0 9 2 0 2 2 0 8 0 uaddrrnd 24 2513 0 2483 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2513 0 2483 1 0 1 1 0 8 0 vmmpekpl 168 21240 0 21191 3 0 3 3 0 8 0 vmmpepl 168 160138 0 158203 116 21 95 100 0 357 3 vmsppl 448 2512 0 2483 6 2 4 5 0 8 0 rwobjpl 56 49990 0 42964 100 0 100 100 0 8 0 pdppl 4096 5033 0 4966 125 54 71 85 0 8 4 pvpl 32 18469 0 0 150 1 149 149 0 265 0 pmappl 248 2512 0 2483 4 1 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 534 0 109 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff834f2ff0) 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(ffffffff835a0960) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a0960) at __mp_lock+0x199 sys/kern/kern_lock.c:144 intr_handler(ffff80002a16c040,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff835a0960) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a0960) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80002a16c1a0,ffff800000079e00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f __mp_lock(ffffffff835a0960) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835a0960) at __mp_lock+0x199 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff835a0960,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x4b7 sys/kern/sched_bsd.c:441 sleep_finish(0,1) at sleep_finish+0x2f2 sys/kern/kern_synch.c:425 getblk(fffffd80093255e8,195160,4000,0,ffffffffffffffff) at getblk+0x197 sys/kern/vfs_bio.c:1017 bread(fffffd80093255e8,195160,4000,ffff80002a16c5d8) at bread+0x47 bio_doread sys/kern/vfs_bio.c:422 [inline] bread(fffffd80093255e8,195160,4000,ffff80002a16c5d8) at bread+0x47 sys/kern/vfs_bio.c:467 ffs_update(fffffd806e0f0450,0) at ffs_update+0x198 sys/ufs/ffs/ffs_inode.c:91 ufs_inactive(ffff80002a16c698) at ufs_inactive+0x2e2 sys/ufs/ufs/ufs_inode.c:95 VOP_INACTIVE(fffffd805ebb9450,ffff8000ffff6530) at VOP_INACTIVE+0x107 sys/kern/vfs_vops.c:495 vput(fffffd805ebb9450) at vput+0xe5 sys/kern/vfs_subr.c:781 vn_closefile(fffffd806b367d30,ffff8000ffff6530) at vn_closefile+0x13f sys/kern/vfs_vnops.c:610 fdrop(fffffd806b367d30,ffff8000ffff6530) at fdrop+0x126 sys/kern/kern_descrip.c:1274 closef(fffffd806b367d30,ffff8000ffff6530) at closef+0x192 sys/kern/kern_descrip.c:1258 syscall(ffff80002a16c910) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80002a16c910) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x745ea4173dd0, count: -24 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(ffff80000135a028,9,0) at witness_checkorder+0x1b4 rw_enter_write(ffff80000135a018) at rw_enter_write+0x7a sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff80000135a000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002e374018) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff800032f88cd8,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff800032f88cd8,ffff800037230f90,ffff800037230ee0) at sys_exit+0x1a syscall(ffff800037230f90) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037230f90) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x784261fe77f0, count: -9