panic: bad dir Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 73288 90387 0 0 0 0K dhcpleased db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8248268c) at panic+0x177 sys/kern/subr_prf.c:202 ufs_lookup() at ufs_lookup+0x174c ufs_dirbad sys/ufs/ufs/ufs_lookup.c:609 [inline] ufs_lookup() at ufs_lookup+0x174c sys/ufs/ufs/ufs_lookup.c:444 VOP_LOOKUP(fffffd80717af578,ffff8000211dc6f8,ffff8000211dc728) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000211dc6c8) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 namei(ffff8000211dc6c8) at namei+0x36a sys/kern/vfs_lookup.c:245 vn_open(ffff8000211dc6c8,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:146 doopenat(ffff8000211937a8,ffffff9c,7f7ffffbe9b0,0,0,ffff8000211dc8b0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff8000211dc920) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211dc920) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe9a0, count: 5 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: bad dir ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8248268c) at panic+0x177 sys/kern/subr_prf.c:202 ufs_lookup() at ufs_lookup+0x174c ufs_dirbad sys/ufs/ufs/ufs_lookup.c:609 [inline] ufs_lookup() at ufs_lookup+0x174c sys/ufs/ufs/ufs_lookup.c:444 VOP_LOOKUP(fffffd80717af578,ffff8000211dc6f8,ffff8000211dc728) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000211dc6c8) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 namei(ffff8000211dc6c8) at namei+0x36a sys/kern/vfs_lookup.c:245 vn_open(ffff8000211dc6c8,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:146 doopenat(ffff8000211937a8,ffffff9c,7f7ffffbe9b0,0,0,ffff8000211dc8b0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff8000211dc920) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211dc920) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe9a0, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000211dc180 rbx 0xffffffff82800bff cpu_info_full_primary+0x2bff rdx 0 rcx 0 rax 0xffff8000211937a8 r8 0x101010101010101 r9 0x8080808080808080 r10 0x8934c2a0a618db8f r11 0x74ebbf3a7ef10889 r12 0xffffffff82800a00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff815b7158 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000211dc170 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (dhcpleased) pid=73288 stat=onproc flags process=0 proc=0 pri=17, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021193268,0xffff8000ffff7a60 process=0xffff8000ffff8858 user=0xffff8000211d7000, vmspace=0xfffffd807efff000 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 64816 403058 61981 0 3 0x80 nanoslp syz-executor.1 64816 438254 61981 0 3 0x4000080 fsleep syz-executor.1 21076 48113 93489 0 2 0 syz-executor.3 21076 146640 93489 0 3 0x4000080 bell syz-executor.3 85153 94849 78386 0 2 0 syz-executor.0 85153 22621 78386 0 3 0x4000080 fsleep syz-executor.0 67625 296222 88780 0 2 0x2 syz-executor.2 93489 361672 88780 0 3 0x82 nanoslp syz-executor.3 61981 74809 88780 0 3 0x82 nanoslp syz-executor.1 78386 159394 88780 0 3 0x82 nanoslp syz-executor.0 38440 236472 1 0 3 0x100083 ttyin getty 59402 349884 0 0 3 0x14200 bored sosplice 88780 69974 39910 0 3 0x82 thrsleep syz-fuzzer 88780 231108 39910 0 3 0x4000082 nanoslp syz-fuzzer 88780 29921 39910 0 3 0x4000082 thrsleep syz-fuzzer 88780 437739 39910 0 3 0x4000082 thrsleep syz-fuzzer 88780 490997 39910 0 3 0x4000082 thrsleep syz-fuzzer 88780 465314 39910 0 3 0x4000082 nanoslp syz-fuzzer 88780 333961 39910 0 3 0x4000082 thrsleep syz-fuzzer 88780 410279 39910 0 3 0x4000082 thrsleep syz-fuzzer 88780 459503 39910 0 3 0x4000082 thrsleep syz-fuzzer 39910 347967 93478 0 3 0x10008a sigsusp ksh 93478 152366 71438 0 3 0x9a poll sshd 71438 144808 1 0 3 0x88 poll sshd 47937 129251 61661 74 3 0x100092 bpf pflogd 61661 517670 1 0 3 0x80 netio pflogd 54413 60369 4825 73 3 0x100090 kqread syslogd 4825 223070 1 0 3 0x100082 netio syslogd 28151 163824 1 0 3 0x100080 kqread resolvd 32164 111892 90387 77 3 0x100092 kqread dhcpleased 90169 139562 90387 77 3 0x100092 kqread dhcpleased *90387 73288 1 0 7 0 dhcpleased 74687 172995 0 0 3 0x14200 bored smr 27157 524066 0 0 2 0x14200 zerothread 66080 275740 0 0 3 0x14200 aiodoned aiodoned 62901 210190 0 0 3 0x14200 syncer update 37014 420417 0 0 3 0x14200 cleaner cleaner 48685 266917 0 0 3 0x14200 reaper reaper 8929 267451 0 0 3 0x14200 pgdaemon pagedaemon 27991 498317 0 0 3 0x14200 bored viomb 33247 112272 0 0 3 0x40014200 acpi0 acpi0 18667 62298 0 0 7 0x40014200 idle1 85443 93633 0 0 3 0x14200 bored softnet 79348 520469 0 0 3 0x14200 bored systqmp 74407 108950 0 0 3 0x14200 bored systq 19734 390309 0 0 3 0x40014200 bored softclock 65625 28667 0 0 3 0x40014200 idle0 1 429373 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 67625 (syz-executor.2) thread 0xffff8000ffff5500 (296222) exclusive rrwlock inode r = 0 (0xfffffd8062155818) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3100 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80621555f8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3085 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 Process 90387 (dhcpleased) thread 0xffff8000211937a8 (73288) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828dce90) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416 #3 sleep_finish+0x1b2 sys/kern/kern_synch.c:433 #4 tsleep+0x12c sys/kern/kern_synch.c:158 #5 biowait+0x91 sys/kern/vfs_bio.c:1271 #6 ffs_bufatoff+0x125 sys/ufs/ffs/ffs_subr.c:71 #7 ufs_lookup+0x466 sys/ufs/ufs/ufs_lookup.c:258 #8 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #10 namei+0x36a sys/kern/vfs_lookup.c:245 #11 vn_open+0x105 sys/kern/vfs_vnops.c:146 #12 doopenat+0x26a sys/kern/vfs_syscalls.c:1128 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806f1024e0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:677 #6 cache_lookup+0x2b4 sys/kern/vfs_cache.c:224 #7 ufs_lookup+0x1ac sys/ufs/ufs/ufs_lookup.c:162 #8 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #10 namei+0x36a sys/kern/vfs_lookup.c:245 #11 vn_open+0x105 sys/kern/vfs_vnops.c:146 #12 doopenat+0x26a sys/kern/vfs_syscalls.c:1128 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10224 6517K 8561K 78643K 78395 0 pcb 13 16K 18K 78643K 4876 0 rtable 182 20K 22K 78643K 7713 0 ifaddr 82 24K 26K 78643K 2617 0 sysctl 3 1K 5K 78643K 7 0 counters 52 35K 35K 78643K 978 0 ioctlops 0 0K 4K 78643K 7173 0 iov 0 0K 24K 78643K 2683 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1646 103K 104K 78643K 22149 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 324 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 4535 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 45K 78643K 36104 0 sigio 0 0K 0K 78643K 107 0 proc 90 88K 113K 78643K 6107 0 subproc 52 3K 7K 78643K 2058 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2515 0 in_multi 48 3K 4K 78643K 2968 0 ether_multi 1 0K 0K 78643K 540 0 mrt 3 0K 0K 78643K 223 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 265 1182K 1182K 78643K 265 0 exec 0 0K 2K 78643K 7783 0 pfkey data 0 0K 0K 78643K 37 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 745 1972K 1972K 78643K 442765 0 UVM aobj 131 6K 6K 78643K 146 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1986 0 NDP 12 0K 1K 78643K 828 0 temp 120 4212K 8308K 78643K 275671 0 kqueue 16 21K 30K 78643K 1583 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 3718 0 3715 51 50 1 3 0 8 0 rtentry 112 2301 0 2239 4 2 2 3 0 8 0 unpcb 136 21373 0 21358 246 245 1 9 0 8 0 syncache 296 27 0 27 8 8 0 1 0 8 0 tcpqe 32 45 0 45 4 4 0 1 0 8 0 tcpcb 736 10578 0 10570 400 397 3 29 0 8 2 arp 120 404 0 393 1 0 1 1 0 8 0 inpcb 304 31615 0 31595 467 465 2 17 0 8 0 rttmr 72 46 0 46 14 14 0 1 0 8 0 nd6 48 517 0 505 1 0 1 1 0 8 0 pkpcb 40 158 0 158 19 19 0 1 0 8 0 kcovpl 48 150 0 146 1 0 1 1 0 8 0 ppxss 1248 147 0 147 42 42 0 1 0 8 0 pfstscr 40 49 0 49 5 5 0 1 0 8 0 pffrag 232 268 0 264 12 11 1 1 0 482 0 pffrnode 88 268 0 264 12 11 1 1 0 8 0 pffrent 40 1910 0 1906 12 11 1 1 0 8 0 pfosfp 40 1431 0 1007 5 0 5 5 0 8 0 pfosfpen 112 1431 0 716 21 0 21 21 0 8 0 pfrktable 1344 239 0 226 8 6 2 2 0 8 0 pftag 88 26 0 21 1 0 1 1 0 8 0 pfqueue 264 17 0 6 1 0 1 1 0 8 0 pfstitem 24 20 0 18 1 0 1 1 0 8 0 pfstkey 112 122 0 120 1 0 1 1 0 8 0 pfstate 320 70 0 68 2 1 1 2 0 8 0 pfrule 1360 795 0 723 8 1 7 7 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 9909 0 9655 58 42 16 19 0 8 0 art_table 32 9911 0 9656 3 0 3 3 0 8 0 art_node 16 2287 0 2234 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 0 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 4532 0 4522 1 0 1 1 0 8 0 shmpl 112 143 0 15 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 46296 0 44787 95 0 95 95 0 8 0 ffsino 272 46296 0 44787 102 0 102 102 0 8 0 nchpl 144 105987 0 104383 61 0 61 61 0 8 0 uvmvnodes 80 7536 0 0 154 0 154 154 0 8 0 vnodes 224 7536 0 0 444 0 444 444 0 8 0 namei 1024 359787 0 359785 19 18 1 1 0 8 0 percpumem 16 501 0 463 1 0 1 1 0 8 0 vcpupl 2048 319 0 1 40 0 40 40 0 8 0 vmpool 560 381 0 63 24 1 23 23 0 8 0 pfiaddrpl 120 82 0 62 1 0 1 1 0 8 0 scxspl 216 297196 0 297196 60 59 1 8 0 8 1 plimitpl 152 3396 0 3385 1 0 1 1 0 8 0 sigapl 424 35956 0 35919 8 1 7 7 0 8 0 futexpl 64 327050 0 327048 20 19 1 1 0 8 0 knotepl 112 279 0 0 3 0 3 3 0 8 0 kqueuepl 216 7266 0 7257 135 134 1 8 0 8 0 pipepl 336 6995 0 6979 188 186 2 12 0 8 0 fdescpl 496 35899 0 35877 5 2 3 4 0 8 0 filepl 152 256241 0 256085 440 431 9 18 0 8 3 lockfpl 104 9605 0 9603 23 22 1 2 0 8 0 lockfspl 48 2762 0 2760 1 0 1 1 0 8 0 sessionpl 144 175 0 162 1 0 1 1 0 8 0 pgrppl 48 431 0 418 1 0 1 1 0 8 0 ucredpl 96 24020 0 24004 1 0 1 1 0 8 0 zombiepl 144 35919 0 35919 1 0 1 1 0 8 1 processpl 1064 35956 0 35919 5 2 3 4 0 8 0 procpl 672 95075 0 95027 46 39 7 8 0 8 0 srpgc 96 196 0 196 36 36 0 1 0 8 0 sosppl 168 232 0 232 41 41 0 1 0 8 0 sockpl 480 57049 0 57021 1206 1201 5 36 0 8 1 mcl64k 65536 25 0 0 3 0 3 3 0 8 0 mcl16k 16384 26 0 0 4 2 2 3 0 8 0 mcl12k 12288 65 0 0 3 1 2 2 0 8 0 mcl9k 9216 41 0 0 2 0 2 2 0 8 0 mcl8k 8192 60 0 0 6 3 3 3 0 8 0 mcl4k 4096 57 0 0 5 2 3 3 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 787 0 0 41 10 31 40 0 8 0 mtagpl 96 1834 0 0 15 2 13 13 0 8 0 mbufpl 256 11565 0 0 608 0 608 608 0 8 0 bufpl 288 59165 0 52632 539 18 521 539 0 8 0 anonpl 24 10273537 0 10244983 648 467 181 213 0 186 7 amapchunkpl 152 1124254 0 1123345 311 273 38 50 0 158 1 amappl16 200 103918 0 102741 443 376 67 79 0 8 0 amappl15 192 6410 0 6408 1 0 1 1 0 8 0 amappl14 184 3890 0 3888 19 18 1 1 0 8 0 amappl13 176 7522 0 7518 1 0 1 1 0 8 0 amappl12 168 6292 0 6283 1 0 1 1 0 8 0 amappl11 160 2164 0 2149 1 0 1 1 0 8 0 amappl10 152 4764 0 4755 1 0 1 1 0 8 0 amappl9 144 4727 0 4722 1 0 1 1 0 8 0 amappl8 136 5435 0 5279 9 3 6 6 0 8 0 amappl7 128 2775 0 2763 1 0 1 1 0 8 0 amappl6 120 5268 0 5243 1 0 1 1 0 8 0 amappl5 112 31827 0 31788 9 7 2 2 0 8 0 amappl4 104 9087 0 9054 1 0 1 1 0 8 0 amappl3 96 12326 0 12290 1 0 1 1 0 8 0 amappl2 88 10642 0 10587 8 6 2 2 0 8 0 amappl1 80 635469 0 634976 13 1 12 13 0 8 0 amappl 88 439284 0 438927 11 2 9 9 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 128 253 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 72 145 0 15 3 0 3 3 0 8 0 uaddrrnd 24 36280 0 35940 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 36280 0 35940 3 0 3 3 0 8 0 vmmpekpl 168 226765 0 226695 5 1 4 4 0 8 0 vmmpepl 168 3290516 0 3287015 1237 1057 180 186 0 357 16 vmsppl 368 36279 0 35940 34 3 31 31 0 8 0 rwobjpl 56 775276 0 765287 234 92 142 146 0 8 0 pdppl 4096 72568 0 72198 535 163 372 373 0 8 2 pvpl 32 17319722 0 17295970 1099 879 220 261 0 265 19 pmappl 248 36279 0 35940 24 2 22 22 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 2693 0 848 55 1 54 54 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8248268c) at panic+0x177 sys/kern/subr_prf.c:202 ufs_lookup() at ufs_lookup+0x174c ufs_dirbad sys/ufs/ufs/ufs_lookup.c:609 [inline] ufs_lookup() at ufs_lookup+0x174c sys/ufs/ufs/ufs_lookup.c:444 VOP_LOOKUP(fffffd80717af578,ffff8000211dc6f8,ffff8000211dc728) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000211dc6c8) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 namei(ffff8000211dc6c8) at namei+0x36a sys/kern/vfs_lookup.c:245 vn_open(ffff8000211dc6c8,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:146 doopenat(ffff8000211937a8,ffffff9c,7f7ffffbe9b0,0,0,ffff8000211dc8b0) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff8000211dc920) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211dc920) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe9a0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020d38ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206 sched_idle(ffff800020d38ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5