witness: lock_object uninitialized: 0xffff800001240028 Starting stack trace... witness_checkorder(ffff800001240028,9,0) at witness_checkorder+0x1af witness_debugger sys/kern/subr_witness.c:2522 [inline] witness_checkorder(ffff800001240028,9,0) at witness_checkorder+0x1af sys/kern/subr_witness.c:779 rw_enter_write(ffff800001240018) at rw_enter_write+0x7a sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800001240000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff800037200490) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000371e3200,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000371e3200,ffff8000372ad560,ffff8000372ad4b0) at sys_exit+0x1a syscall(ffff8000372ad560) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000372ad560) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d1cc00e5f20, 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(ffff800001240028,9,0) at witness_checkorder+0x1b4 rw_enter_write(ffff800001240018) at rw_enter_write+0x7a sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800001240000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff800037200490) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000371e3200,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000371e3200,ffff8000372ad560,ffff8000372ad4b0) at sys_exit+0x1a syscall(ffff8000372ad560) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000372ad560) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d1cc00e5f20, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000372ad230 rbx 0 rdx 0 rcx 0xffff8000371e3200 rax 0xffff800029b7bff0 r8 0xffff8000372ad1d0 r9 0x8080808080808080 r10 0x8ac05333ccf1911 r11 0x8b5ddfbac6565eed r12 0 r13 0x1 r14 0xffff800001240028 r15 0x3 rip 0xffffffff82b713d5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000372ad220 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=247118 pid=56227 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000371e3200 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000371e2cf0,0xffff8000371e2a78 process=0xffff800037200490 user=0xffff8000372a8000, vmspace=0xfffffd806bed7c60 estcpu=36, cpticks=9, pctcpu=0.0, user=0, sys=8, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 72519 174343 21178 0 2 0 syz-executor 55497 455177 37911 0 2 0 syz-executor 55497 466914 37911 0 3 0x4000080 fsleep syz-executor 55497 305515 37911 0 3 0x4000080 fsleep syz-executor 14895 260703 0 0 3 0x14280 nfsidl nfsio 59945 32909 0 0 3 0x14280 nfsidl nfsio 10346 225630 0 0 3 0x14280 nfsidl nfsio 40957 171721 0 0 3 0x14280 nfsidl nfsio 66410 499107 0 0 3 0x14280 nfsidl nfsio 96211 438199 0 0 3 0x14280 nfsidl nfsio 17029 509212 0 0 3 0x14280 nfsidl nfsio 46861 68045 0 0 3 0x14280 nfsidl nfsio 67979 427311 0 0 3 0x14280 nfsidl nfsio 98897 471543 0 0 3 0x14280 nfsidl nfsio 79914 11069 0 0 3 0x14280 nfsidl nfsio 34267 386132 0 0 3 0x14280 nfsidl nfsio 17630 190964 0 0 3 0x14280 nfsidl nfsio 636 62641 0 0 3 0x14280 nfsidl nfsio 94687 172793 0 0 3 0x14280 nfsidl nfsio 38838 354138 0 0 3 0x14280 nfsidl nfsio 86709 328993 0 0 3 0x14280 nfsidl nfsio 92242 457469 0 0 3 0x14280 nfsidl nfsio 24178 222659 0 0 3 0x14280 nfsidl nfsio 55545 370235 0 0 3 0x14280 nfsidl nfsio 81035 441775 60155 0 3 0x3000 suspend syz-executor 81035 102890 60155 0 3 0x4081000 biowait syz-executor 80075 274024 1 0 3 0x100083 ttyin getty 39399 9504 0 0 3 0x14200 acct acct 39080 447954 91282 0 3 0x2 biowait syz-executor 59570 144774 91282 0 3 0x2 getblk syz-executor 28127 376253 0 0 3 0x14200 bored sosplice 60155 407526 91282 0 3 0x82 wait syz-executor 37911 240997 91282 0 3 0x82 nanoslp syz-executor 21178 314975 91282 0 3 0x82 nanoslp syz-executor 56162 197684 91282 0 3 0x82 nanoslp syz-executor 96156 216295 91282 0 3 0x82 nanoslp syz-executor 76629 503438 91282 0 3 0x82 nanoslp syz-executor 91282 5567 12417 0 7 0x2 syz-executor 12417 247348 88457 0 3 0x10008a sigsusp ksh 88457 112426 79694 0 3 0x98 kqread sshd-session 79694 466035 50780 0 3 0x92 kqread sshd-session 50780 16029 1 0 3 0x88 kqread sshd 74814 227030 20964 74 3 0x1100092 bpf pflogd 20964 347838 1 0 3 0x80 sbwait pflogd 1279 318771 93295 73 3 0x1100090 kqread syslogd 93295 521403 1 0 3 0x100082 sbwait syslogd 64218 387841 1 0 3 0x100080 kqread resolvd 25643 494847 76707 77 3 0x100092 kqread dhcpleased 22503 438514 76707 77 3 0x100092 kqread dhcpleased 76707 85148 1 0 3 0x80 kqread dhcpleased 38752 497617 0 0 3 0x14200 bored smr 95770 339277 0 0 2 0x14200 zerothread 72213 219062 0 0 3 0x14200 aiodoned aiodoned 2959 450274 0 0 3 0x14200 syncer update 58725 509922 0 0 3 0x14200 cleaner cleaner 44079 444561 0 0 2 0x14200 reaper 86219 306493 0 0 3 0x14200 pgdaemon pagedaemon 40176 341453 0 0 3 0x14200 bored viomb 3078 98403 0 0 3 0x40014200 acpi0 acpi0 19830 68827 0 0 3 0x40014200 idle1 85939 388792 0 0 3 0x14200 bored softnet3 81448 188492 0 0 3 0x14200 bored softnet2 5539 73789 0 0 3 0x14200 bored softnet1 58600 412861 0 0 3 0x14200 bored softnet0 78642 59046 0 0 3 0x14200 bored systqmp 94634 265195 0 0 3 0x14200 bored systq 15515 114722 0 0 3 0x14200 tmoslp softclockmp 56117 469981 0 0 3 0x40014200 tmoslp softclock 41026 196986 0 0 3 0x40014200 idle0 1 446823 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 81035 (syz-executor) thread 0xffff8000365b7470 (102890) exclusive rrwlock inode r = 0 (0xfffffd806dd1f3c8) #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_write+0x18d sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x23c sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #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 39080 (syz-executor) thread 0xffff80003726b990 (447954) exclusive rrwlock inode r = 0 (0xfffffd805ed26818) #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 (0xfffffd806d34bb40) #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 Process 59570 (syz-executor) thread 0xffff8000365b6f60 (144774) exclusive rrwlock inode r = 0 (0xfffffd805ed264e8) #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 44079 (reaper) thread 0xffff800029fd87a0 (444561) exclusive rwlock kmmaplk r = 0 (0xffffffff835700c0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5255 #2 uvm_unmap+0x81 sys/uvm/uvm_map.c:1792 #3 km_free+0x87 sys/uvm/uvm_km.c:833 #4 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:284 #5 reaper+0x1fe sys/kern/kern_exit.c:466 #6 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10241 11160K 12228K 166960K 16629 0 pcb 17 15K 16K 166960K 596 0 rtable 150 6K 7K 166960K 764 0 pf 43 19K 274K 166960K 161 0 ifaddr 39 6K 8K 166960K 117 0 ifgroup 69 2K 3K 166960K 164 0 sysctl 4 1K 1K 166960K 8 0 counters 72 37K 37K 166960K 148 0 ioctlops 0 0K 4K 166960K 1784 0 iov 0 0K 24K 166960K 218 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1504 95K 95K 166960K 4549 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 28K 36K 166960K 63 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 183 0 dirhash 12 2K 3K 166960K 99 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 15 53K 89K 166960K 3208 0 sigio 0 0K 0K 166960K 65 0 proc 78 115K 128K 166960K 937 0 subproc 104 6K 6K 166960K 132 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 727 0 in_multi 61 4K 7K 166960K 242 0 ether_multi 1 0K 0K 166960K 31 0 mrt 1 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 871 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 235 73K 96K 166960K 32077 0 UVM aobj 158 6K 8K 166960K 169 0 pinsyscall 41 82K 102K 166960K 4354 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 231 0 NDP 16 0K 1K 166960K 82 0 temp 76 6828K 6924K 166960K 141810 0 kqueue 14 22K 32K 166960K 554 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 120 280 0 277 2 0 2 2 0 8 1 rtentry 112 225 0 165 4 0 4 4 0 8 0 unpcb 144 2660 0 2641 21 17 4 6 0 8 2 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 808 1420 0 1416 34 26 8 8 0 8 7 arp 120 34 0 23 1 0 1 1 0 8 0 inpcb 336 4416 0 4408 28 21 7 10 0 8 6 nd6 136 38 0 23 1 0 1 1 0 8 0 pkpcb 40 12 0 12 5 4 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1168 32 0 31 4 3 1 1 0 8 0 pffrag 232 21 0 12 2 1 1 1 0 482 0 pffrnode 88 21 0 12 2 1 1 1 0 8 0 pffrent 40 46 0 37 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 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 235 0 114 1 0 1 1 0 8 0 pfstkey 128 236 0 115 5 0 5 5 0 8 0 pfstate 376 235 0 115 14 0 14 14 0 8 0 pfrule 1344 23 0 17 2 1 1 2 0 8 0 art_heap8 4096 4 0 1 3 0 3 3 0 8 0 art_heap4 256 890 0 562 35 13 22 30 0 8 0 art_table 32 894 0 563 4 0 4 4 0 8 0 art_node 16 185 0 132 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 9 1 0 1 1 0 8 0 semapl 112 174 0 164 1 0 1 1 0 8 0 shmpl 112 166 0 11 5 0 5 5 0 8 0 dirhash 1024 76 0 59 3 0 3 3 0 8 0 dino2pl 256 7542 0 6035 95 0 95 95 0 8 0 ffsino 272 7542 0 6035 102 0 102 102 0 8 0 nchpl 144 12170 0 10477 64 0 64 64 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 42298 0 42297 4 3 1 2 0 8 0 percpumem 16 88 0 38 1 0 1 1 0 8 0 kstatmem 264 108 0 76 3 0 3 3 0 8 0 scsiplug 72 23 0 23 6 5 1 1 0 8 1 scxspl 216 46315 0 46312 17 16 1 8 1 8 0 plimitpl 152 889 0 869 1 0 1 1 0 8 0 sigapl 424 3553 0 3483 12 3 9 9 0 8 0 futexpl 64 49039 0 49037 1 0 1 1 0 8 0 knotepl 120 874 0 0 25 0 25 25 0 8 0 kqueuepl 216 1010 0 1000 11 8 3 5 0 8 2 pipepl 320 686 0 659 13 10 3 8 0 8 0 fdescpl 496 3490 0 3461 6 1 5 5 0 8 0 filepl 152 26405 0 26152 37 19 18 20 0 8 5 lockfpl 104 1316 0 1314 2 1 1 2 0 8 0 lockfspl 48 474 0 472 1 0 1 1 0 8 0 sessionpl 144 30 0 21 1 0 1 1 0 8 0 pgrppl 48 152 0 135 1 0 1 1 0 8 0 ucredpl 104 5246 0 5232 1 0 1 1 0 8 0 zombiepl 144 3668 0 3663 1 0 1 1 0 8 0 processpl 1160 3553 0 3483 7 1 6 6 0 8 0 procpl 648 8767 0 8691 10 2 8 8 0 8 0 srpgc 96 12 0 12 4 4 0 1 0 8 0 sosppl 168 16 0 16 6 5 1 1 0 8 1 sockpl 664 7476 0 7446 53 42 11 18 0 8 8 mcl64k 65536 4 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 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 142 0 0 18 0 18 18 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 38 0 0 4 0 4 4 0 8 0 mtagpl 96 259 0 0 7 0 7 7 0 8 0 mbufpl 256 2448 0 0 150 0 150 150 0 8 0 bufpl 280 17019 0 10845 442 0 442 442 0 8 0 anonpl 24 455532 0 444383 154 85 69 115 0 185 0 amapchunkpl 152 106968 0 106362 75 38 37 45 0 158 8 amappl16 200 10787 0 10421 89 69 20 32 0 8 0 amappl15 192 34 0 33 1 0 1 1 0 8 0 amappl14 184 130 0 118 1 0 1 1 0 8 0 amappl13 176 15 0 15 2 2 0 1 0 8 0 amappl12 168 4172 0 4143 3 1 2 2 0 8 0 amappl11 160 49 0 35 1 0 1 1 0 8 0 amappl10 152 10 0 10 2 2 0 1 0 8 0 amappl9 144 194 0 194 2 2 0 1 0 8 0 amappl8 136 15 0 12 1 0 1 1 0 8 0 amappl7 128 115 0 102 1 0 1 1 0 8 0 amappl6 120 218 0 216 1 0 1 1 0 8 0 amappl5 112 149 0 136 1 0 1 1 0 8 0 amappl4 104 367 0 348 1 0 1 1 0 8 0 amappl3 96 19369 0 19281 3 0 3 3 0 8 0 amappl2 88 3782 0 3698 3 0 3 3 0 8 0 amappl1 80 17285 0 16722 14 0 14 14 0 8 0 amappl 88 31409 0 31237 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 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 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 257 0 257 5 5 0 1 0 8 0 dma64 64 7 0 7 2 2 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 72 168 0 11 3 0 3 3 0 8 0 uaddrrnd 24 3490 0 3460 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3490 0 3460 1 0 1 1 0 8 0 vmmpekpl 168 27470 0 27424 3 0 3 3 0 8 0 vmmpepl 168 214947 0 212783 137 37 100 110 0 357 0 vmsppl 448 3489 0 3460 6 2 4 5 0 8 0 rwobjpl 56 59528 0 52172 108 2 106 106 0 8 0 pdppl 4096 6987 0 6920 119 48 71 83 0 8 4 pvpl 32 38171 0 0 308 0 308 308 0 265 0 pmappl 248 3489 0 3460 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 615 0 122 15 0 15 15 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff834ffff0) 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+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(ffffffff8363b2e0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8363b2e0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff80002a075f60,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_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(ffffffff8363b2e0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8363b2e0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 intr_handler(ffff80002a0760d0,ffff800000079e00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f __mp_lock(ffffffff8363b2e0) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8363b2e0) at __mp_lock+0x199 sys/kern/kern_lock.c:144 intr_handler(ffff80002a076230,ffff800000079f80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff8363b2e0) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8363b2e0) at __mp_lock+0x199 sys/kern/kern_lock.c:144 syscall(ffff80002a076400) at syscall+0x2cc mi_syscall sys/sys/syscall_mi.h:155 [inline] syscall(ffff80002a076400) at syscall+0x2cc sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ac66d48aa20, count: -17 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(ffff800001240028,9,0) at witness_checkorder+0x1b4 rw_enter_write(ffff800001240018) at rw_enter_write+0x7a sys/kern/kern_rwlock.c:128 unveil_delete_names(ffff800001240000) at unveil_delete_names+0x3d sys/kern/kern_unveil.c:102 unveil_destroy(ffff800037200490) at unveil_destroy+0xbd sys/kern/kern_unveil.c:183 exit1(ffff8000371e3200,0,0,1) at exit1+0x60f sys/kern/kern_exit.c:233 sys_exit(ffff8000371e3200,ffff8000372ad560,ffff8000372ad4b0) at sys_exit+0x1a syscall(ffff8000372ad560) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff8000372ad560) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d1cc00e5f20, count: -9