witness: lock_object uninitialized: 0xffff80000150d030 Starting stack trace... witness_checkorder(ffff80000150d030,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff80000150d030,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_do_enter_write(ffff80000150d018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff80000150d000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002f8ac248) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002a447238,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80002a447238,ffff80002b0c6980,ffff80002b0c68d0) at sys_exit+0x1a syscall(ffff80002b0c6980) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002b0c6980) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f9e66f9a290, 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(ffff80000150d030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff80000150d018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff80000150d000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002f8ac248) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002a447238,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80002a447238,ffff80002b0c6980,ffff80002b0c68d0) at sys_exit+0x1a syscall(ffff80002b0c6980) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002b0c6980) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f9e66f9a290, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002b0c6610 rbx 0 rdx 0 rcx 0xffff80002a447238 rax 0xffff800029aabff0 r8 0xffff80002b0c65b0 r9 0x8080808080808080 r10 0x57fdb1abc80b2b30 r11 0x6535bc584e9864fb r12 0 r13 0x1 r14 0xffff80000150d030 r15 0x3 rip 0xffffffff82606ac5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002b0c6600 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=505502 pid=56422 tcnt=0 stat=onproc flags process=1018 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a447238 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a4474c8,0xffff80002a446d28 process=0xffff80002f8ac248 user=0xffff80002b0c1000, vmspace=0xfffffd806beac1e0 estcpu=36, cpticks=12, pctcpu=0.0, user=0, sys=8, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 20267 17465 70562 0 2 0 syz-executor 20267 186051 70562 0 3 0x4000080 fsleep syz-executor 28152 225505 10701 0 2 0 syz-executor 28152 327019 10701 0 3 0x4000080 fsleep syz-executor 9065 461450 4904 0 2 0 syz-executor 9065 267627 4904 0 3 0x4000080 ttyout syz-executor 9065 255567 4904 0 3 0x4000080 fsleep syz-executor 50727 195572 39926 60928 2 0x10 syz-executor 50727 274599 39926 60928 2 0x4000010 syz-executor 50727 21304 39926 60928 3 0x4000090 fsleep syz-executor 54921 344780 0 0 3 0x14200 acct acct 84798 275454 44059 0 3 0x2 biowait syz-executor 4904 293054 44059 0 3 0x82 nanoslp syz-executor 761 2408 44059 0 3 0x82 nanoslp syz-executor 22653 392521 0 0 3 0x14280 nfsidl nfsio 66220 480069 0 0 3 0x14280 nfsidl nfsio 69392 51192 0 0 3 0x14280 nfsidl nfsio 51059 503323 0 0 3 0x14280 nfsidl nfsio 85756 225730 0 0 3 0x14280 nfsidl nfsio 9778 458303 0 0 3 0x14280 nfsidl nfsio 96305 138754 0 0 3 0x14280 nfsidl nfsio 39841 390971 0 0 3 0x14280 nfsidl nfsio 15116 163806 0 0 3 0x14280 nfsidl nfsio 58033 266328 0 0 3 0x14280 nfsidl nfsio 34782 482187 0 0 3 0x14280 nfsidl nfsio 8186 387083 0 0 3 0x14280 nfsidl nfsio 91313 133488 0 0 3 0x14280 nfsidl nfsio 82692 494463 0 0 3 0x14280 nfsidl nfsio 34757 168105 0 0 3 0x14280 nfsidl nfsio 41764 179094 0 0 3 0x14280 nfsidl nfsio 91032 255515 0 0 3 0x14280 nfsidl nfsio 5589 304569 0 0 3 0x14280 nfsidl nfsio 17518 373675 0 0 3 0x14280 nfsidl nfsio 69455 316048 0 0 3 0x14280 nfsidl nfsio 53987 155508 1 0 3 0x100083 ttyin getty 58603 12655 0 0 3 0x14200 bored sosplice 83540 489541 44059 0 2 0x2 syz-executor 29667 204376 44059 0 3 0x82 nanoslp syz-executor 39926 442063 44059 0 3 0x82 nanoslp syz-executor 10701 317060 44059 0 3 0x82 nanoslp syz-executor 70562 109247 44059 0 3 0x82 nanoslp syz-executor 44059 518572 37027 0 7 0x3 syz-executor 37027 174784 97949 0 3 0x10008a sigsusp ksh 97949 269631 16541 0 3 0x98 kqread sshd-session 16541 323473 97337 0 3 0x92 kqread sshd-session 97337 345524 1 0 3 0x88 kqread sshd 73288 9059 10167 74 3 0x1100092 bpf pflogd 10167 243264 1 0 3 0x80 sbwait pflogd 83387 487103 11919 73 3 0x1100090 kqread syslogd 11919 48625 1 0 3 0x100082 sbwait syslogd 21147 177238 1 0 3 0x100080 kqread resolvd 23724 82940 77569 77 3 0x100092 kqread dhcpleased 23636 395869 77569 77 3 0x100092 kqread dhcpleased 77569 245423 1 0 3 0x80 kqread dhcpleased 91839 258380 0 0 3 0x14200 bored smr 61240 417550 0 0 2 0x14200 zerothread 25382 334716 0 0 3 0x14200 aiodoned aiodoned 97067 451639 0 0 3 0x14200 syncer update 1990 202018 0 0 3 0x14200 cleaner cleaner 4889 394955 0 0 2 0x14200 reaper 80976 383142 0 0 3 0x14200 pgdaemon pagedaemon 47692 167915 0 0 3 0x14200 bored viomb 71314 391663 0 0 3 0x40014200 acpi0 acpi0 11470 195286 0 0 3 0x40014200 idle1 9275 294232 0 0 3 0x14200 bored softnet3 69088 212771 0 0 3 0x14200 bored softnet2 18230 198500 0 0 3 0x14200 bored softnet1 82070 89762 0 0 2 0x14200 softnet0 50792 263867 0 0 3 0x14200 bored systqmp 66163 360171 0 0 3 0x14200 bored systq 74934 306623 0 0 3 0x14200 tmoslp softclockmp 49019 437740 0 0 3 0x40014200 tmoslp softclock 68725 293540 0 0 3 0x40014200 idle0 1 267258 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 9065 (syz-executor) thread 0xffff80002a447c78 (461450) exclusive rwlock vmmaplk r = 0 (0xfffffd806beaca00) #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_map_protect+0xe1 sys/uvm/uvm_map.c:3057 #4 sys_mprotect+0x34c sys/uvm/uvm_mmap.c:590 #5 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 Process 50727 (syz-executor) thread 0xffff80002a446568 (274599) exclusive rwlock futex r = 0 (0xffffffff837985a8) #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 84798 (syz-executor) thread 0xffff80002a446a88 (275454) exclusive rrwlock inode r = 0 (0xfffffd806bdba770) #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 vget+0x2bd sys/kern/vfs_subr.c:694 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1851 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806decb970) #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 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1851 #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 4889 (reaper) thread 0xffff8000ffffd1f8 (394955) exclusive rwlock kmmaplk r = 0 (0xffffffff838e1920) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10206 11109K 11619K 166960K 13699 0 pcb 17 15K 16K 166960K 290 0 rtable 210 8K 9K 166960K 734 0 pf 36 18K 25K 166960K 224 0 ifaddr 38 6K 8K 166960K 103 0 ifgroup 58 2K 2K 166960K 161 0 sysctl 4 1K 1K 166960K 8 0 counters 64 36K 37K 166960K 142 0 ioctlops 0 0K 4K 166960K 1816 0 iov 0 0K 24K 166960K 176 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1554 98K 98K 166960K 3124 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 33 0 VM map 2 1K 1K 166960K 2 0 sem 25 10K 10K 166960K 54 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 240K 166960K 1640 0 sigio 0 0K 0K 166960K 23 0 proc 79 115K 140K 166960K 838 0 subproc 72 4K 4K 166960K 109 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 250 0 in_multi 79 5K 7K 166960K 201 0 ether_multi 1 0K 0K 166960K 13 0 mrt 1 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 701 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 233 72K 87K 166960K 16638 0 UVM aobj 52 6K 6K 166960K 58 0 pinsyscall 42 84K 106K 166960K 2817 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 62 0 NDP 12 0K 2K 166960K 70 0 temp 83 8644K 8712K 166960K 36276 0 kqueue 13 20K 38K 166960K 314 0 SYN cache 2 16K 16K 166960K 2 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 120 163 0 160 2 1 1 2 0 8 0 rtentry 112 230 0 138 4 0 4 4 0 8 0 unpcb 144 1296 0 1279 15 13 2 6 0 8 1 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 403 0 396 8 6 2 7 0 8 1 arp 120 34 0 14 1 0 1 1 0 8 0 inpcb 376 1778 0 1770 28 20 8 15 0 8 7 nd6 136 41 0 17 1 0 1 1 0 8 0 pkpcb 40 11 0 11 5 4 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1168 23 0 23 4 3 1 1 0 8 1 pppxif 1472 6 0 6 4 3 1 1 0 8 1 pffrag 232 12 0 3 1 0 1 1 0 482 0 pffrnode 88 12 0 3 1 0 1 1 0 8 0 pffrent 40 20 0 11 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 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 95 0 25 1 0 1 1 0 8 0 pfstkey 128 95 0 25 3 0 3 3 0 8 0 pfstate 376 95 0 25 7 0 7 7 0 8 0 pfrule 1344 55 0 17 5 1 4 4 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 777 0 417 34 4 30 31 0 8 1 art_table 32 779 0 417 4 0 4 4 0 8 0 art_node 16 188 0 107 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semupl 112 8 0 8 3 2 1 1 0 8 1 semapl 112 49 0 26 1 0 1 1 0 8 0 shmpl 112 55 0 6 2 0 2 2 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 4324 0 2814 95 0 95 95 0 8 0 ffsino 280 4324 0 2814 109 0 109 109 0 8 0 nchpl 144 6604 0 6054 65 32 33 64 0 8 8 uvmvnodes 80 5608 0 0 115 0 115 115 0 8 0 vnodes 216 5608 0 0 312 0 312 312 0 8 0 namei 1024 23306 0 23306 3 2 1 1 0 8 1 percpumem 16 85 0 39 1 0 1 1 0 8 0 kstatmem 264 88 0 64 3 1 2 3 0 8 0 scsiplug 72 4 0 4 3 2 1 1 0 8 1 scxspl 216 19524 0 19523 12 11 1 8 1 8 0 plimitpl 152 306 0 287 1 0 1 1 0 8 0 sigapl 424 1944 0 1873 11 2 9 9 0 8 0 futexpl 64 22700 0 22695 1 0 1 1 0 8 0 knotepl 120 318 0 0 10 0 10 10 0 8 0 kqueuepl 216 584 0 575 7 6 1 5 0 8 0 pipepl 328 263 0 236 3 0 3 3 0 8 0 fdescpl 504 1901 0 1871 6 1 5 6 0 8 0 filepl 152 12632 0 12416 26 13 13 17 0 8 1 lockfpl 104 434 0 432 1 0 1 1 0 8 0 lockfspl 48 175 0 173 1 0 1 1 0 8 0 sessionpl 144 28 0 19 1 0 1 1 0 8 0 pgrppl 48 55 0 38 1 0 1 1 0 8 0 ucredpl 104 2176 0 2161 1 0 1 1 0 8 0 zombiepl 144 2002 0 1999 1 0 1 1 0 8 0 processpl 1168 1944 0 1873 7 1 6 6 0 8 0 procpl 656 4336 0 4257 10 2 8 8 0 8 0 srpgc 96 9 0 9 3 3 0 1 0 8 0 sosppl 168 14 0 14 3 2 1 1 0 8 1 sockpl 688 3272 0 3244 47 37 10 21 0 8 7 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 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 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 127 0 0 16 0 16 16 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 30 0 0 4 0 4 4 0 8 0 mtagpl 96 32 0 0 1 0 1 1 0 8 0 mbufpl 256 361 0 0 23 0 23 23 0 8 0 bufpl 280 5110 0 139 356 0 356 356 0 8 0 anonpl 24 236196 0 232636 64 28 36 48 0 184 0 amapchunkpl 152 53720 0 53208 39 12 27 28 0 158 2 amappl16 200 4366 0 4327 33 26 7 15 0 8 1 amappl15 192 68 0 68 1 1 0 1 0 8 0 amappl14 184 121 0 109 1 0 1 1 0 8 0 amappl13 176 3 0 3 2 2 0 1 0 8 0 amappl12 168 2609 0 2578 4 1 3 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 3 0 2 2 1 1 1 0 8 0 amappl9 144 274 0 274 1 1 0 1 0 8 0 amappl8 136 21 0 18 1 0 1 1 0 8 0 amappl7 128 116 0 104 1 0 1 1 0 8 0 amappl6 120 223 0 219 1 0 1 1 0 8 0 amappl5 112 139 0 128 1 0 1 1 0 8 0 amappl4 104 334 0 315 1 0 1 1 0 8 0 amappl3 96 11197 0 11080 4 0 4 4 0 8 0 amappl2 88 705 0 642 2 0 2 2 0 8 0 amappl1 80 12531 0 11962 14 1 13 14 0 8 0 amappl 88 16143 0 15966 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 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 128 255 0 255 2 1 1 1 0 8 1 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 57 0 6 1 0 1 1 0 8 0 uaddrrnd 24 1901 0 1870 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1901 0 1870 1 0 1 1 0 8 0 vmmpekpl 168 15188 0 15128 3 0 3 3 0 8 0 vmmpepl 168 117810 0 115911 106 18 88 93 0 357 2 vmsppl 456 1900 0 1870 5 0 5 5 0 8 0 rwobjpl 64 36278 0 29667 108 1 107 107 0 8 0 pdppl 4096 3810 0 3740 120 48 72 88 0 8 2 pvpl 32 15735 0 0 127 0 127 127 0 265 0 pmappl 248 1900 0 1870 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 333 0 69 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff837a6ff0) 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(ffffffff83925158) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83925158) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80002a3b2140,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff83925158) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83925158) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80002a3b22a0,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff83925158) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83925158) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 ktrgenio(ffff8000ffffcf68,27,1,ffff80000154fea0,30) at ktrgenio+0x238 sys/kern/kern_ktrace.c:264 dofilewritev(ffff8000ffffcf68,27,ffff80002a3b2558,0,ffff80002a3b2610) at dofilewritev+0x4d6 sys/kern/sys_generic.c:398 sys_write(ffff8000ffffcf68,ffff80002a3b26c0,ffff80002a3b2610) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80002a3b26c0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3b26c0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a645fd96ec0, count: -16 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(ffff80000150d030,9,0) at witness_checkorder+0x1b4 rw_do_enter_write(ffff80000150d018,0) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 unveil_delete_names(ffff80000150d000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff80002f8ac248) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff80002a447238,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff80002a447238,ffff80002b0c6980,ffff80002b0c68d0) at sys_exit+0x1a syscall(ffff80002b0c6980) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002b0c6980) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f9e66f9a290, count: -9