panic: missing alias Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *372614 58048 0 0x2 0 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8333a774) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd805d756e78,ffff8000fffea028) at vgonel+0x681 sys/kern/vfs_subr.c:1218 checkalias(fffffd80757f9610,1e5f,ffff800000b49800) at checkalias+0x1ab sys/kern/vfs_subr.c:-1 ffs_vinit(ffff800000b49800,ffff80003c438f80) at ffs_vinit+0x13d sys/ufs/ffs/ffs_subr.c:-1 ffs_vget(ffff800000b49800,539,ffff80003c439068) at ffs_vget+0x429 sys/ufs/ffs/ffs_vfsops.c:1283 ufs_lookup() at ufs_lookup+0x16bc sys/ufs/ufs/ufs_lookup.c:573 VOP_LOOKUP(fffffd8071c0c570,ffff80003c4392e8,ffff80003c439318) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c4392b8) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80003c4392b8) at namei+0x7aa sys/kern/vfs_lookup.c:250 dofstatat(ffff8000fffea028,ffffff9c,741e397b4a40,741e397b4e40,2) at dofstatat+0xe0 sys/kern/vfs_syscalls.c:2084 syscall(ffff80003c439530) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c439530) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x741e397b4ef0, count: 2 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: missing alias ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8333a774) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd805d756e78,ffff8000fffea028) at vgonel+0x681 sys/kern/vfs_subr.c:1218 checkalias(fffffd80757f9610,1e5f,ffff800000b49800) at checkalias+0x1ab sys/kern/vfs_subr.c:-1 ffs_vinit(ffff800000b49800,ffff80003c438f80) at ffs_vinit+0x13d sys/ufs/ffs/ffs_subr.c:-1 ffs_vget(ffff800000b49800,539,ffff80003c439068) at ffs_vget+0x429 sys/ufs/ffs/ffs_vfsops.c:1283 ufs_lookup() at ufs_lookup+0x16bc sys/ufs/ufs/ufs_lookup.c:573 VOP_LOOKUP(fffffd8071c0c570,ffff80003c4392e8,ffff80003c439318) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c4392b8) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80003c4392b8) at namei+0x7aa sys/kern/vfs_lookup.c:250 dofstatat(ffff8000fffea028,ffffff9c,741e397b4a40,741e397b4e40,2) at dofstatat+0xe0 sys/kern/vfs_syscalls.c:2084 syscall(ffff80003c439530) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c439530) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x741e397b4ef0, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c438d60 rbx 0xffffffff837ebdcf cpu_info_full_primary+0x2dcf rdx 0 rcx 0xffff8000fffea028 rax 0xffffffff837eaff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x7768f5b486c22dfd r11 0x2fd1d113cc7627aa r12 0xffffffff837ebbd0 cpu_info_full_primary+0x2bd0 r13 0 r14 0 r15 0x1 rip 0xffffffff82428565 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c438d50 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=372614 pid=58048 tcnt=1 stat=onproc flags process=2 proc=0 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff14a0,0xffff8000fffea2c8 process=0xffff8000fffe4e18 user=0xffff80003c434000, vmspace=0xfffffd806bd31200 estcpu=36, cpticks=0, pctcpu=0.12, user=4, sys=204, intr=3 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 78021 349914 0 0 3 0x14200 acct acct 11345 331693 1 0 3 0x100083 ttyin getty 9911 60408 51206 0 3 0x82 piperd syz-executor 7378 492683 51206 0 3 0x82 piperd syz-executor 57190 223251 51206 0 3 0x82 piperd syz-executor 5090 286353 51206 0 3 0x82 nanoslp syz-executor 22847 196929 51206 0 3 0x82 piperd syz-executor *58048 372614 51206 0 7 0x2 syz-executor 92660 438771 0 0 3 0x14200 bored sosplice 12199 259383 51206 0 3 0x82 piperd syz-executor 51206 298760 18463 0 3 0x82 nanoslp syz-executor 18463 148459 73216 0 3 0x10008a sigsusp ksh 73216 211983 45763 0 3 0x98 kqread sshd-session 45763 197116 67567 0 3 0x92 kqread sshd-session 67567 189718 1 0 3 0x88 kqread sshd 65076 267439 38046 74 3 0x1100092 bpf pflogd 38046 74228 1 0 3 0x80 sbwait pflogd 12500 397498 1864 73 3 0x1100090 kqread syslogd 1864 207284 1 0 3 0x100082 sbwait syslogd 55841 243572 1 0 3 0x100080 kqread resolvd 31194 463037 61094 77 3 0x100092 kqread dhcpleased 85913 245659 61094 77 3 0x100092 kqread dhcpleased 61094 409737 1 0 3 0x80 kqread dhcpleased 27078 325717 0 0 3 0x14200 bored smr 35520 308616 0 0 2 0x14200 zerothread 85342 58833 0 0 3 0x14200 aiodoned aiodoned 95137 112063 0 0 3 0x14200 syncer update 70619 493561 0 0 3 0x14200 cleaner cleaner 34168 15780 0 0 3 0x14200 reaper reaper 55924 57972 0 0 3 0x14200 pgdaemon pagedaemon 28092 426632 0 0 3 0x14200 bored viomb 12775 54875 0 0 3 0x40014200 acpi0 acpi0 78574 401427 0 0 7 0x40014200 idle1 45499 266719 0 0 3 0x14200 bored softnet3 80702 22089 0 0 3 0x14200 bored softnet2 80813 54713 0 0 3 0x14200 bored softnet1 6961 162636 0 0 3 0x14200 bored softnet0 78302 207623 0 0 3 0x14200 bored systqmp 99379 374757 0 0 3 0x14200 bored systq 69302 325722 0 0 3 0x14200 tmoslp softclockmp 3694 325602 0 0 3 0x40014200 tmoslp softclock 12954 4059 0 0 3 0x40014200 idle0 1 77391 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 58048 (syz-executor) thread 0xffff8000fffea028 (372614) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838c1ae0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 yield+0x6a sys/kern/sched_bsd.c:320 #4 pool_get+0x265 sys/kern/subr_pool.c:593 #5 ffs_vget+0x320 sys/ufs/ffs/ffs_vfsops.c:1264 #6 ufs_lookup+0x16bc sys/ufs/ufs/ufs_lookup.c:573 #7 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #8 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #9 namei+0x7aa sys/kern/vfs_lookup.c:250 #10 dofstatat+0xe0 sys/kern/vfs_syscalls.c:2084 #11 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e059d20) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #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 ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ufs_lookup+0x16bc sys/ufs/ufs/ufs_lookup.c:573 #7 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #8 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #9 namei+0x7aa sys/kern/vfs_lookup.c:250 #10 dofstatat+0xe0 sys/kern/vfs_syscalls.c:2084 #11 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806dd92f60) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #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 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x21b sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 dofstatat+0xe0 sys/kern/vfs_syscalls.c:2084 #12 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10242 11250K 12522K 166960K 16176 0 pcb 17 15K 17K 166960K 587 0 rtable 226 12K 13K 166960K 1398 0 pf 39 18K 23K 166960K 328 0 ifaddr 40 7K 9K 166960K 231 0 ifgroup 54 2K 2K 166960K 361 0 sysctl 4 1K 5K 166960K 12 0 counters 62 36K 37K 166960K 438 0 ioctlops 0 0K 4K 166960K 2054 0 iov 0 0K 16K 166960K 155 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1555 98K 98K 166960K 4532 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 36 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 112 0 dirhash 12 2K 2K 166960K 42 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 10 33K 110K 166960K 2870 0 sigio 0 0K 0K 166960K 49 0 proc 73 91K 128K 166960K 1426 0 subproc 63 3K 4K 166960K 279 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 533 0 in_multi 87 6K 7K 166960K 429 0 ether_multi 1 0K 0K 166960K 25 0 mrt 1 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 265 1182K 1182K 166960K 265 0 exec 0 0K 1K 166960K 1012 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 9 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 196 172K 198K 166960K 26421 0 UVM aobj 88 5K 5K 166960K 97 0 pinsyscall 35 70K 104K 166960K 4568 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 130 0 NDP 11 0K 2K 166960K 160 0 temp 72 8687K 8760K 166960K 92103 0 kqueue 13 20K 34K 166960K 443 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 357 0 354 3 2 1 3 0 8 0 rtentry 176 424 0 331 6 0 6 6 0 8 0 unpcb 144 1859 0 1842 15 14 1 6 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 729 0 725 19 18 1 8 0 8 0 arp 128 72 0 53 1 0 1 1 0 8 0 inpcb 384 2660 0 2650 38 33 5 12 0 8 2 nd6 144 99 0 76 2 1 1 2 0 8 0 pkpcb 40 22 0 22 5 5 0 1 0 8 0 kcovpl 48 31 0 24 1 0 1 1 0 8 0 mppekey 1024 3 0 3 3 3 0 1 0 8 0 ppxss 1192 133 0 133 3 2 1 1 0 8 1 pppxif 1504 81 0 81 4 3 1 1 0 8 1 pfstscr 40 3 0 3 1 1 0 1 0 8 0 pffrag 232 15 0 11 1 0 1 1 0 482 0 pffrnode 88 13 0 10 1 0 1 1 0 8 0 pffrent 40 30 0 25 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 27 0 23 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstitem 24 130 0 93 1 0 1 1 0 8 0 pfstkey 128 133 0 96 3 0 3 3 0 8 0 pfstate 384 132 0 95 8 0 8 8 0 8 0 pfrule 1344 68 0 29 5 1 4 4 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1771 0 1360 41 12 29 29 0 8 1 art_table 32 1774 0 1360 4 0 4 4 0 8 0 art_node 16 413 0 331 1 0 1 1 0 8 0 sysvmsgpl 40 25 0 19 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 109 0 99 1 0 1 1 0 8 0 shmpl 112 94 0 9 3 0 3 3 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 6204 0 4655 98 0 98 98 0 8 0 ffsino 288 6204 0 4655 111 0 111 111 0 8 0 nchpl 144 9853 0 8101 66 0 66 66 0 8 0 rtmask 32 8 0 8 4 4 0 1 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 36815 0 36814 1 0 1 1 0 8 0 percpumem 16 234 0 188 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 196 0 174 2 0 2 2 0 8 0 scsiplug 72 10 0 10 4 4 0 1 0 8 0 scxspl 216 34656 0 34656 13 12 1 8 1 8 1 plimitpl 152 689 0 672 1 0 1 1 0 8 0 sigapl 424 3142 0 3098 10 3 7 9 0 8 0 futexpl 64 37368 0 37368 1 0 1 1 0 8 1 knotepl 120 596 0 0 17 0 17 17 0 8 0 kqueuepl 224 895 0 886 9 6 3 5 0 8 2 pipepl 336 501 0 474 6 3 3 6 0 8 0 fdescpl 520 3099 0 3075 3 0 3 3 0 8 0 filepl 160 20384 0 20183 28 16 12 18 0 8 0 lockfpl 104 900 0 898 3 2 1 2 0 8 0 lockfspl 48 335 0 333 1 0 1 1 0 8 0 sessionpl 144 47 0 38 1 0 1 1 0 8 0 pgrppl 48 179 0 163 1 0 1 1 0 8 0 ucredpl 104 3350 0 3337 1 0 1 1 0 8 0 zombiepl 144 3617 0 3614 1 0 1 1 0 8 0 processpl 1192 3142 0 3098 6 0 6 6 0 8 0 procpl 656 7332 0 7285 9 3 6 8 0 8 0 srpgc 96 22 0 22 3 3 0 1 0 8 0 sosppl 168 10 0 10 4 4 0 1 0 8 0 sockpl 728 4925 0 4898 45 38 7 16 0 8 4 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 112 4 0 14 0 14 14 0 8 0 mcl2k 2048 36 0 0 4 0 4 4 0 8 0 mtagpl 96 88 0 0 2 0 2 2 0 8 0 mbufpl 256 1228 0 0 76 0 76 76 0 8 0 bufpl 280 11355 0 5212 440 0 440 440 0 8 0 anonpl 32 9771 0 0 80 1 79 79 0 246 0 amapchunkpl 152 88788 0 88435 47 22 25 30 0 158 0 amappl16 200 7201 0 7171 57 49 8 21 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 164 0 152 1 0 1 1 0 8 0 amappl13 176 12 0 12 2 2 0 1 0 8 0 amappl12 168 4125 0 4101 4 2 2 3 0 8 0 amappl11 160 59 0 44 1 0 1 1 0 8 0 amappl10 152 6 0 5 3 2 1 1 0 8 0 amappl9 144 244 0 244 1 1 0 1 0 8 0 amappl8 136 41 0 38 1 0 1 1 0 8 0 amappl7 128 157 0 144 1 0 1 1 0 8 0 amappl6 120 414 0 408 1 0 1 1 0 8 0 amappl5 112 229 0 219 1 0 1 1 0 8 0 amappl4 104 399 0 378 1 0 1 1 0 8 0 amappl3 96 18539 0 18466 5 1 4 4 0 8 0 amappl2 88 984 0 921 2 0 2 2 0 8 0 amappl1 80 21030 0 20452 17 3 14 15 0 8 0 amappl 88 24863 0 24742 5 0 5 5 0 92 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 257 0 257 3 3 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 96 0 9 2 0 2 2 0 8 0 uaddrrnd 24 3099 0 3075 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3099 0 3075 1 0 1 1 0 8 0 vmmpekpl 168 22685 0 22619 4 0 4 4 0 8 0 vmmpepl 168 194782 0 193114 117 19 98 106 0 357 0 vmsppl 480 3098 0 3075 6 1 5 5 0 8 0 rwobjpl 72 54052 0 47155 133 1 132 132 0 8 0 pdppl 4096 6206 0 6150 154 80 74 88 0 8 18 pvpl 32 17702 0 0 145 2 143 143 0 265 0 pmappl 256 3098 0 3075 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 544 0 121 13 0 13 13 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:438 panic(ffffffff8333a774) at panic+0x1e5 sys/kern/subr_prf.c:198 vgonel(fffffd805d756e78,ffff8000fffea028) at vgonel+0x681 sys/kern/vfs_subr.c:1218 checkalias(fffffd80757f9610,1e5f,ffff800000b49800) at checkalias+0x1ab sys/kern/vfs_subr.c:-1 ffs_vinit(ffff800000b49800,ffff80003c438f80) at ffs_vinit+0x13d sys/ufs/ffs/ffs_subr.c:-1 ffs_vget(ffff800000b49800,539,ffff80003c439068) at ffs_vget+0x429 sys/ufs/ffs/ffs_vfsops.c:1283 ufs_lookup() at ufs_lookup+0x16bc sys/ufs/ufs/ufs_lookup.c:573 VOP_LOOKUP(fffffd8071c0c570,ffff80003c4392e8,ffff80003c439318) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c4392b8) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80003c4392b8) at namei+0x7aa sys/kern/vfs_lookup.c:250 dofstatat(ffff8000fffea028,ffffff9c,741e397b4a40,741e397b4e40,2) at dofstatat+0xe0 sys/kern/vfs_syscalls.c:2084 syscall(ffff80003c439530) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c439530) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x741e397b4ef0, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff8000299edff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff8000299edff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5