panic: vrele: ref cnt Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 161865 91813 0 0 0 1 syz-executor *437805 76932 0 0x500000 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830dd29c) at panic+0x1e5 sys/kern/subr_prf.c:198 vrele(fffffd806fbf2dd8) at vrele+0x240 sys/kern/vfs_subr.c:813 unveil_destroy(ffff8000ffffad60) at unveil_destroy+0x9a sys/kern/kern_unveil.c:181 sys_pledge(ffff80002fd787c8,ffff8000371b7ef0,ffff8000371b7e40) at sys_pledge+0x399 sys/kern/kern_pledge.c:532 syscall(ffff8000371b7ef0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371b7ef0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd2121497f0, count: 8 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: vrele: ref cnt ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830dd29c) at panic+0x1e5 sys/kern/subr_prf.c:198 vrele(fffffd806fbf2dd8) at vrele+0x240 sys/kern/vfs_subr.c:813 unveil_destroy(ffff8000ffffad60) at unveil_destroy+0x9a sys/kern/kern_unveil.c:181 sys_pledge(ffff80002fd787c8,ffff8000371b7ef0,ffff8000371b7e40) at sys_pledge+0x399 sys/kern/kern_pledge.c:532 syscall(ffff8000371b7ef0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371b7ef0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd2121497f0, count: -7 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000371b7c40 rbx 0xffffffff834d5d87 cpu_info_full_primary+0x2d87 rdx 0 rcx 0xffff80002fd787c8 rax 0xffffffff834d4ff0 cpu_info_full_primary+0x1ff0 r8 0 r9 0x8080808080808080 r10 0xe2fee97d19afeec5 r11 0xcb061d9c4ff14597 r12 0xffffffff834d5b88 cpu_info_full_primary+0x2b88 r13 0 r14 0 r15 0x1 rip 0xffffffff817459e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000371b7c30 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=437805 pid=76932 tcnt=4 stat=onproc flags process=500000 proc=4000000 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff6530,0xffff8000ffff6cd8 process=0xffff8000ffffad60 user=0xffff8000371b2000, vmspace=0xfffffd806bf65378 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 91813 161865 7604 0 7 0 syz-executor 89944 161891 65818 0 2 0 syz-executor 89944 92814 65818 0 2 0x4000000 syz-executor 4514 19817 11810 0 2 0 syz-executor 4514 211505 11810 0 3 0x4000080 fsleep syz-executor 9044 326840 8462 0 2 0x2 ndp 8462 318832 16236 0 3 0x10008a sigsusp sh 76932 361221 38769 0 2 0x500000 syz-executor *76932 437805 38769 0 7 0x4500000 syz-executor 76932 398779 38769 0 2 0x4500000 syz-executor 76932 236637 38769 0 3 0x4500080 fsleep syz-executor 38621 439217 23204 0 2 0 syz-executor 38621 422140 23204 0 3 0x4000080 fsleep syz-executor 72854 25659 13254 -1 2 0x490 syz-executor 72854 300798 13254 -1 3 0x4000090 ttyin syz-executor 72854 10808 13254 -1 3 0x4000090 fsleep syz-executor 38769 298444 72667 0 2 0x482 syz-executor 16236 423673 72667 0 3 0x82 wait syz-executor 16378 421655 72667 0 2 0x2 syz-executor 65818 185454 72667 0 2 0x482 syz-executor 23204 135154 72667 0 2 0x2 syz-executor 7604 32407 72667 0 2 0x482 syz-executor 13254 318783 72667 0 2 0x2 syz-executor 11810 177125 72667 0 2 0x2 syz-executor 4868 466340 1 0 3 0x100083 ttyin getty 26954 72841 0 0 3 0x14200 bored sosplice 72667 65969 56987 0 2 0x2 syz-executor 56987 125920 2212 0 3 0x10008a sigsusp ksh 2212 361608 11788 0 3 0x98 kqread sshd-session 11788 385441 53170 0 3 0x92 kqread sshd-session 53170 203310 1 0 3 0x88 kqread sshd 94244 26952 60739 74 3 0x1100092 bpf pflogd 60739 194342 1 0 3 0x80 sbwait pflogd 26211 93752 79463 73 2 0x1100010 syslogd 79463 373937 1 0 3 0x100082 sbwait syslogd 67606 28387 1 0 3 0x100080 kqread resolvd 82155 95596 31724 77 3 0x100092 kqread dhcpleased 26151 471322 31724 77 3 0x100092 kqread dhcpleased 31724 256793 1 0 3 0x80 kqread dhcpleased 14786 175544 0 0 3 0x14200 bored smr 38050 152044 0 0 2 0x14200 zerothread 21075 233218 0 0 3 0x14200 aiodoned aiodoned 12867 350851 0 0 3 0x14200 syncer update 34070 479416 0 0 3 0x14200 cleaner cleaner 90329 85004 0 0 3 0x14200 reaper reaper 22682 319520 0 0 3 0x14200 pgdaemon pagedaemon 77946 301873 0 0 3 0x14200 bored viomb 70019 331282 0 0 3 0x40014200 acpi0 acpi0 65672 332847 0 0 3 0x40014200 idle1 72112 378178 0 0 3 0x14200 bored softnet3 88362 340108 0 0 3 0x14200 bored softnet2 90746 232001 0 0 3 0x14200 bored softnet1 83723 385908 0 0 2 0x14200 softnet0 93572 313258 0 0 3 0x14200 bored systqmp 33506 479829 0 0 3 0x14200 bored systq 62499 217512 0 0 2 0x14200 softclockmp 88798 352585 0 0 2 0x40014200 softclock 40168 478946 0 0 3 0x40014200 idle0 1 510981 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 76932 (syz-executor) thread 0xffff80002fd787c8 (437805) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83627dc0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 sys_pledge+0x388 sys/kern/kern_pledge.c:531 #2 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #2 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #3 Xsyscall+0x128 Process 76932 (syz-executor) thread 0xffff8000371d51f0 (398779) exclusive rrwlock inode r = 0 (0xfffffd80743c11b8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 vrele+0xd0 sys/kern/vfs_subr.c:818 #6 unveil_destroy+0x9a sys/kern/kern_unveil.c:181 #7 sys_pledge+0x399 sys/kern/kern_pledge.c:532 #8 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 16378 (syz-executor) thread 0xffff80002fd78540 (421655) exclusive rrwlock inode r = 0 (0xfffffd80743c1f88) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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:120 #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:3100 #10 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #10 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80743c12c8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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:3085 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 26211 (syslogd) thread 0xffff8000ffffdbe8 (93752) exclusive rrwlock inode r = 0 (0xfffffd806e4a04e0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #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 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2927 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10194 10173K 10431K 166960K 12191 0 pcb 17 16K 16K 166960K 155 0 rtable 216 7K 8K 166960K 1650 0 pf 36 18K 82K 166960K 169 0 ifaddr 41 7K 7K 166960K 217 0 ifgroup 55 2K 2K 166960K 240 0 sysctl 3 0K 0K 166960K 3 0 counters 64 36K 36K 166960K 156 0 ioctlops 0 0K 4K 166960K 1578 0 iov 0 0K 16K 166960K 40 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1585 100K 100K 166960K 2643 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 85 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 18 65K 97K 166960K 1228 0 sigio 0 0K 0K 166960K 14 0 proc 73 103K 128K 166960K 1701 0 subproc 104 6K 6K 166960K 624 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 64 0 in_multi 95 7K 7K 166960K 557 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 1017 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 235 93K 108K 166960K 10689 0 UVM aobj 50 4K 4K 166960K 50 0 pinsyscall 43 86K 108K 166960K 3344 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 63 0 NDP 18 0K 2K 166960K 154 0 temp 57 6819K 6883K 166960K 39549 0 kqueue 13 20K 28K 166960K 98 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 120 164 0 161 1 0 1 1 0 8 0 rtentry 112 576 0 479 4 1 3 4 0 8 0 unpcb 144 574 0 557 6 5 1 4 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 317 0 311 16 15 1 8 0 8 0 arp 120 103 0 85 1 0 1 1 0 8 0 inpcb 336 1256 0 1246 27 25 2 13 0 8 1 nd6 136 150 0 126 1 0 1 1 0 8 0 pkpcb 40 3 0 3 3 2 1 1 0 8 1 kcovpl 48 48 0 40 1 0 1 1 0 8 0 ppxss 1168 2 0 2 1 1 0 1 0 8 0 pffrag 232 2 0 1 1 0 1 1 0 482 0 pffrnode 88 2 0 1 1 0 1 1 0 8 0 pffrent 40 4 0 3 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 pfrktable 1344 2 0 2 2 2 0 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 3 0 2 1 0 1 1 0 8 0 pfqueue 264 1 0 0 1 0 1 1 0 8 0 pfstitem 24 98 0 57 1 0 1 1 0 8 0 pfstkey 128 98 0 57 2 0 2 2 0 8 0 pfstate 376 96 0 57 4 0 4 4 0 8 0 pfrule 1344 29 0 23 2 1 1 2 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 2270 0 1848 30 3 27 29 0 8 0 art_table 32 2272 0 1849 4 0 4 4 0 8 0 art_node 16 573 0 486 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 82 0 72 1 0 1 1 0 8 0 shmpl 112 47 0 0 2 0 2 2 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2628 0 1045 100 0 100 100 0 8 0 ffsino 272 2628 0 1045 106 0 106 106 0 8 0 nchpl 144 3596 0 1855 65 0 65 65 0 8 0 uvmvnodes 80 3779 0 0 78 0 78 78 0 8 0 vnodes 216 3779 0 0 210 0 210 210 0 8 0 namei 1024 16412 0 16411 5 4 1 2 0 8 0 percpumem 16 92 0 46 1 0 1 1 0 8 0 vcpupl 3904 5 0 0 1 0 1 1 0 8 0 vmpool 696 7 0 2 1 0 1 1 0 8 0 kstatmem 264 116 0 92 2 0 2 2 0 8 0 scsiplug 72 2 0 2 2 2 0 1 0 8 0 scxspl 216 28010 0 28010 15 14 1 8 1 8 1 plimitpl 152 325 0 308 1 0 1 1 0 8 0 sigapl 424 1449 0 1398 10 3 7 7 0 8 0 futexpl 64 8991 0 8987 4 3 1 1 0 8 0 knotepl 120 813 0 0 25 0 25 25 0 8 0 kqueuepl 216 226 0 216 5 4 1 5 0 8 0 pipepl 320 377 0 350 6 3 3 6 0 8 0 fdescpl 496 1430 0 1398 8 3 5 6 0 8 0 filepl 152 7898 0 7645 28 16 12 18 0 8 1 lockfpl 104 207 0 204 1 0 1 1 0 8 0 lockfspl 48 83 0 80 1 0 1 1 0 8 0 sessionpl 144 64 0 55 1 0 1 1 0 8 0 pgrppl 48 158 0 141 1 0 1 1 0 8 0 ucredpl 104 1073 0 1059 1 0 1 1 0 8 0 zombiepl 144 1398 0 1398 1 0 1 1 0 8 1 processpl 1160 1449 0 1398 5 1 4 5 0 8 0 procpl 648 2354 0 2295 8 2 6 7 0 8 0 srpgc 96 3 0 3 2 2 0 1 0 8 0 sosppl 168 4 0 4 2 2 0 1 0 8 0 sockpl 664 2002 0 1972 31 27 4 15 0 8 1 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 249 0 0 32 0 32 32 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 449 0 0 26 0 26 26 0 8 0 bufpl 280 8248 0 1392 490 0 490 490 0 8 0 anonpl 24 245631 0 241121 85 31 54 82 0 185 22 amapchunkpl 152 33748 0 33268 44 13 31 43 0 158 10 amappl16 200 4574 0 4491 26 17 9 14 0 8 4 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 199 0 187 1 0 1 1 0 8 0 amappl13 176 9 0 9 1 1 0 1 0 8 0 amappl12 168 2714 0 2681 4 2 2 3 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 70 0 70 1 1 0 1 0 8 0 amappl9 144 140 0 140 1 1 0 1 0 8 0 amappl8 136 22 0 20 1 0 1 1 0 8 0 amappl7 128 184 0 172 1 0 1 1 0 8 0 amappl6 120 567 0 564 1 0 1 1 0 8 0 amappl5 112 293 0 281 1 0 1 1 0 8 0 amappl4 104 432 0 412 1 0 1 1 0 8 0 amappl3 96 6510 0 6400 4 0 4 4 0 8 0 amappl2 88 1181 0 1114 2 0 2 2 0 8 0 amappl1 80 13447 0 12847 18 4 14 15 0 8 1 amappl 88 9990 0 9823 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 dma2048 2048 1 0 1 1 0 1 1 0 8 1 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 49 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1437 0 1400 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1437 0 1400 1 0 1 1 0 8 0 vmmpekpl 168 14215 0 14172 3 0 3 3 0 8 0 vmmpepl 168 94038 0 92105 99 11 88 93 0 357 0 vmsppl 440 1436 0 1400 7 2 5 5 0 8 0 rwobjpl 56 32971 0 28122 70 1 69 69 0 8 0 pdppl 4096 2881 0 2805 158 77 81 87 0 8 5 pvpl 32 44150 0 0 357 1 356 356 0 265 0 pmappl 248 1436 0 1400 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 516 0 130 12 0 12 12 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 panic(ffffffff830dd29c) at panic+0x1e5 sys/kern/subr_prf.c:198 vrele(fffffd806fbf2dd8) at vrele+0x240 sys/kern/vfs_subr.c:813 unveil_destroy(ffff8000ffffad60) at unveil_destroy+0x9a sys/kern/kern_unveil.c:181 sys_pledge(ffff80002fd787c8,ffff8000371b7ef0,ffff8000371b7e40) at sys_pledge+0x399 sys/kern/kern_pledge.c:532 syscall(ffff8000371b7ef0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371b7ef0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd2121497f0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) 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(ffffffff83627bb8) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:114 [inline] __mp_lock(ffffffff83627bb8) at __mp_lock+0x190 sys/kern/kern_lock.c:144 syscall(ffff8000371ff170) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371ff170) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78c7559fc290, count: 9 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) 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(ffffffff83627bb8) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:114 [inline] __mp_lock(ffffffff83627bb8) at __mp_lock+0x190 sys/kern/kern_lock.c:144 syscall(ffff8000371ff170) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff8000371ff170) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78c7559fc290, count: -6