panic: bad dir Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 41652 24982 0 0x2000 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83381103) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80002a3c3bf8,ffff80002a3c3bf8,842f77bdd8543279) at ufs_dirbadentry VOP_LOOKUP(fffffd8009ee3360,ffff80002a3c3dc8,ffff80002a3c3df8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a3c3d98) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80002a3c3d98) at namei+0x7aa sys/kern/vfs_lookup.c:250 sys_unveil(ffff8000ffff1d48,ffff80002a3c3f80,ffff80002a3c3ed0) at sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 syscall(ffff80002a3c3f80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3c3f80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x830979836f0, count: 6 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+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83381103) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80002a3c3bf8,ffff80002a3c3bf8,842f77bdd8543279) at ufs_dirbadentry VOP_LOOKUP(fffffd8009ee3360,ffff80002a3c3dc8,ffff80002a3c3df8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a3c3d98) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80002a3c3d98) at namei+0x7aa sys/kern/vfs_lookup.c:250 sys_unveil(ffff8000ffff1d48,ffff80002a3c3f80,ffff80002a3c3ed0) at sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 syscall(ffff80002a3c3f80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3c3f80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x830979836f0, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a3c3a20 rbx 0xffffffff837c2dcf cpu_info_full_primary+0x2dcf rdx 0xffff8000014940c0 rcx 0xffff8000ffff1d48 rax 0xffffffff837c1ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xa79ece08d32d0b8a r11 0x7a4b6a5781e3da8a r12 0xffffffff837c2bd0 cpu_info_full_primary+0x2bd0 r13 0 r14 0 r15 0x1 rip 0xffffffff82abaff5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a3c3a10 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=41652 pid=24982 tcnt=2 stat=onproc flags process=2000 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000ffff1d48 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff0010,0xffff80002a29d010 process=0xffff8000fffea168 user=0xffff80002a3bf000, vmspace=0xfffffd806a4fa030 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 68533 402625 72557 0 2 0x2 ifconfig 72557 36024 45159 0 3 0x10008a sigsusp sh 24982 508115 76161 0 4 0x82000 syz-executor *24982 41652 76161 0 7 0x4002000 syz-executor 45159 181031 98755 0 3 0x82 wait syz-executor 62856 8252 90916 0 2 0 syz-executor 62856 263789 90916 0 3 0x4000080 fsleep syz-executor 62856 470957 90916 0 3 0x4000080 fsleep syz-executor 59404 122605 72771 0 2 0x1 syz-executor 59404 174851 72771 0 3 0x4000080 fsleep syz-executor 8407 411264 17248 0 2 0 syz-executor 8407 490546 17248 0 3 0x4000080 ttyin syz-executor 8407 408 17248 0 3 0x4000080 fsleep syz-executor 8407 28116 17248 0 3 0x4000080 fsleep syz-executor 68313 397305 75920 0 2 0x1 syz-executor 68313 83332 75920 0 3 0x4000080 fsleep syz-executor 22235 300818 0 0 3 0x14280 nfsidl nfsio 50464 31398 0 0 3 0x14280 nfsidl nfsio 9667 238854 0 0 3 0x14280 nfsidl nfsio 20601 171870 0 0 3 0x14280 nfsidl nfsio 65598 285191 0 0 3 0x14280 nfsidl nfsio 14232 322160 0 0 3 0x14280 nfsidl nfsio 51132 272862 0 0 3 0x14280 nfsidl nfsio 95081 298199 0 0 3 0x14280 nfsidl nfsio 99958 84549 0 0 3 0x14280 nfsidl nfsio 18783 461872 0 0 3 0x14280 nfsidl nfsio 76265 99963 0 0 3 0x14280 nfsidl nfsio 16164 238676 0 0 3 0x14280 nfsidl nfsio 35226 23956 0 0 3 0x14280 nfsidl nfsio 11274 467287 0 0 3 0x14280 nfsidl nfsio 37625 312435 0 0 3 0x14280 nfsidl nfsio 4698 320115 0 0 3 0x14280 nfsidl nfsio 88819 400147 0 0 3 0x14280 nfsidl nfsio 93391 480405 0 0 3 0x14280 nfsidl nfsio 23103 144514 0 0 3 0x14280 nfsidl nfsio 41974 19003 0 0 3 0x14280 nfsidl nfsio 72771 46663 98755 0 2 0xc82 syz-executor 91461 275659 0 0 3 0x14200 bored sosplice 76161 233900 98755 0 3 0x82 nanoslp syz-executor 71862 15400 98755 0 2 0xc82 syz-executor 73513 216346 98755 0 2 0xc82 syz-executor 17248 256602 98755 0 2 0xc82 syz-executor 90916 282753 98755 0 2 0xc82 syz-executor 75920 521208 98755 0 2 0xc82 syz-executor 98755 426877 34140 0 3 0x82 kqread syz-executor 34140 494506 13764 0 3 0x10008a sigsusp ksh 13764 244320 26866 0 3 0x98 kqread sshd-session 26866 432050 45852 0 3 0x92 kqread sshd-session 25975 46026 1 0 3 0x100083 ttyopn getty 45852 358009 1 0 3 0x88 kqread sshd 15180 187038 33161 74 3 0x1100092 bpf pflogd 33161 497877 1 0 3 0x80 sbwait pflogd 94461 233026 72792 73 3 0x1100090 kqread syslogd 72792 300289 1 0 3 0x100082 sbwait syslogd 38121 109961 1 0 3 0x100080 kqread resolvd 95622 138556 99122 77 3 0x100092 kqread dhcpleased 40987 524018 99122 77 3 0x100092 kqread dhcpleased 99122 94827 1 0 3 0x80 kqread dhcpleased 41569 332542 0 0 3 0x14200 bored smr 68240 333734 0 0 2 0x14200 zerothread 40811 265022 0 0 3 0x14200 aiodoned aiodoned 70278 415148 0 0 3 0x14200 syncer update 76888 313914 0 0 3 0x14200 cleaner cleaner 67378 241952 0 0 3 0x14200 reaper reaper 32157 252685 0 0 3 0x14200 pgdaemon pagedaemon 40573 407580 0 0 3 0x14200 bored viomb 35677 192141 0 0 3 0x40014200 acpi0 acpi0 90155 423367 0 0 7 0x40014200 idle1 33113 428151 0 0 3 0x14200 bored softnet3 87393 8703 0 0 3 0x14200 bored softnet2 86027 427893 0 0 3 0x14200 bored softnet1 67017 159603 0 0 3 0x14200 bored softnet0 1925 393834 0 0 3 0x14200 bored systqmp 47281 493469 0 0 3 0x14200 bored systq 36696 138454 0 0 2 0x14200 softclockmp 40503 106155 0 0 2 0x40014200 softclock 84527 100943 0 0 3 0x40014200 idle0 1 51472 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 24982 (syz-executor) thread 0xffff8000ffff1d48 (41652) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83964030) #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 sleep_finish+0x24f sys/kern/kern_synch.c:412 #4 biowait+0xc1 sys/kern/vfs_bio.c:1246 #5 ffs_bufatoff+0x16f sys/ufs/ffs/ffs_subr.c:71 #6 ufs_lookup+0x548 sys/ufs/ufs/ufs_lookup.c:256 #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 sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 #11 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807e312f40) #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:527 #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 sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 #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 8407 (syz-executor) thread 0xffff800037fffaa8 (490546) exclusive rrwlock inode r = 0 (0xfffffd806f4a9bf0) #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:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 spec_open+0x305 sys/kern/spec_vnops.c:151 #6 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 #7 vn_open+0x708 sys/kern/vfs_vnops.c:177 #8 vndioctl+0xcb1 sys/dev/vnd.c:457 #9 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #10 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #11 sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 #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 10227 11048K 12361K 166960K 12257 0 pcb 17 15K 16K 166960K 166 0 rtable 187 6K 9K 166960K 491 0 pf 35 17K 23K 166960K 121 0 ifaddr 36 6K 8K 166960K 72 0 ifgroup 54 2K 2K 166960K 108 0 sysctl 1 1K 5K 166960K 2 0 counters 62 36K 36K 166960K 104 0 ioctlops 0 0K 4K 166960K 1550 0 iov 0 0K 12K 166960K 64 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1438 90K 91K 166960K 2115 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 158 0 dirhash 12 2K 3K 166960K 42 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 97K 166960K 766 0 sigio 0 0K 0K 166960K 3 0 proc 79 103K 140K 166960K 660 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 98 0 in_multi 77 5K 7K 166960K 139 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 461 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 251 177K 190K 166960K 8565 0 UVM aobj 13 2K 2K 166960K 14 0 pinsyscall 44 88K 108K 166960K 1914 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 24 0 NDP 11 0K 2K 166960K 48 0 temp 53 8685K 8810K 166960K 29224 0 kqueue 13 20K 28K 166960K 104 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 80 0 77 1 0 1 1 0 8 0 rtentry 176 147 0 64 6 0 6 6 0 8 0 unpcb 144 556 0 536 7 5 2 5 0 8 1 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 211 0 205 7 6 1 7 0 8 0 arp 128 23 0 8 1 0 1 1 0 8 0 inpcb 384 692 0 679 14 12 2 8 0 8 0 nd6 144 32 0 12 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1192 12 0 12 2 1 1 1 0 8 1 pppxif 1504 2 0 2 1 1 0 1 0 8 0 pffrag 232 4 0 0 1 0 1 1 0 482 0 pffrnode 88 4 0 0 1 0 1 1 0 8 0 pffrent 40 8 0 4 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 0 5 5 0 8 5 pfosfpen 112 1428 0 1428 21 0 21 21 0 8 21 pfrktable 1344 9 0 9 1 1 0 1 0 8 0 pfanchor 1288 3 0 2 1 0 1 1 0 8 0 pfstitem 24 60 0 21 1 0 1 1 0 8 0 pfstkey 128 68 0 29 2 0 2 2 0 8 0 pfstate 384 63 0 25 4 0 4 4 0 8 0 pfrule 1344 35 0 28 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 596 0 233 29 0 29 29 0 8 3 art_table 32 598 0 233 4 0 4 4 0 8 0 art_node 16 144 0 69 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 8 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 154 0 144 1 0 1 1 0 8 0 shmpl 112 11 0 1 1 0 1 1 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 2841 0 1331 95 0 95 95 0 8 0 ffsino 288 2841 0 1331 109 0 109 109 0 8 0 nchpl 144 3859 0 2155 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 1 0 1 0 8 0 uvmvnodes 80 3311 0 0 68 0 68 68 0 8 0 vnodes 216 3311 0 0 184 0 184 184 0 8 0 namei 1024 12988 0 12986 3 2 1 2 0 8 0 percpumem 16 67 0 21 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 2 1 1 0 1 0 8 0 kstatmem 264 56 0 34 2 0 2 2 0 8 0 scsiplug 72 5 0 5 3 2 1 1 0 8 1 scxspl 216 12409 0 12409 9 8 1 8 1 8 1 plimitpl 152 85 0 68 1 0 1 1 0 8 0 sigapl 424 1083 0 1011 10 1 9 9 0 8 0 futexpl 64 8417 0 8411 1 0 1 1 0 8 0 knotepl 120 548 0 0 16 0 16 16 0 8 0 kqueuepl 224 183 0 173 2 1 1 2 0 8 0 pipepl 336 151 0 124 3 0 3 3 0 8 0 fdescpl 520 1043 0 1010 3 0 3 3 0 8 0 filepl 160 6001 0 5773 21 9 12 15 0 8 1 lockfpl 104 313 0 311 2 1 1 2 0 8 0 lockfspl 48 85 0 83 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 46 0 29 1 0 1 1 0 8 0 ucredpl 104 1089 0 1075 1 0 1 1 0 8 0 zombiepl 144 1300 0 1298 2 1 1 1 0 8 0 processpl 1216 1083 0 1011 6 0 6 6 0 8 0 procpl 680 2116 0 2036 8 0 8 8 0 8 0 srpgc 96 7 0 7 2 1 1 1 0 8 1 sosppl 168 3 0 3 2 1 1 1 0 8 1 sockpl 728 1336 0 1300 21 16 5 12 0 8 1 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 12 0 0 2 0 2 2 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 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 51 0 0 7 0 7 7 0 8 0 mtagpl 96 14 0 0 1 0 1 1 0 8 0 mbufpl 256 251 0 0 15 0 15 15 0 8 0 bufpl 280 3740 0 128 258 0 258 258 0 8 0 anonpl 32 8368 0 0 69 1 68 68 0 246 0 amapchunkpl 152 27690 0 27125 39 8 31 31 0 158 9 amappl16 200 3490 0 3454 37 25 12 15 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 116 0 104 1 0 1 1 0 8 0 amappl13 176 12 0 11 1 0 1 1 0 8 0 amappl12 168 1723 0 1690 4 1 3 3 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 7 0 6 2 1 1 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 110 0 98 1 0 1 1 0 8 0 amappl6 120 206 0 201 1 0 1 1 0 8 0 amappl5 112 131 0 120 1 0 1 1 0 8 0 amappl4 104 313 0 293 1 0 1 1 0 8 0 amappl3 96 5402 0 5284 4 0 4 4 0 8 0 amappl2 88 665 0 599 2 0 2 2 0 8 0 amappl1 80 10799 0 10186 15 2 13 15 0 8 0 amappl 88 7725 0 7548 5 0 5 5 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 13 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1043 0 1010 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1043 0 1010 1 0 1 1 0 8 0 vmmpekpl 168 9761 0 9715 3 0 3 3 0 8 0 vmmpepl 168 71605 0 69551 115 15 100 100 0 357 5 vmsppl 480 1042 0 1010 7 2 5 5 0 8 0 rwobjpl 72 24020 0 19723 81 0 81 81 0 8 0 pdppl 4096 2094 0 2020 110 36 74 88 0 8 0 pvpl 32 16046 0 0 130 0 130 130 0 265 0 pmappl 256 1042 0 1010 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 418 0 47 11 0 11 11 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(ffffffff83381103) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80002a3c3bf8,ffff80002a3c3bf8,842f77bdd8543279) at ufs_dirbadentry VOP_LOOKUP(fffffd8009ee3360,ffff80002a3c3dc8,ffff80002a3c3df8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a3c3d98) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80002a3c3d98) at namei+0x7aa sys/kern/vfs_lookup.c:250 sys_unveil(ffff8000ffff1d48,ffff80002a3c3f80,ffff80002a3c3ed0) at sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 syscall(ffff80002a3c3f80) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3c3f80) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x830979836f0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) 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(ffff8000299ddff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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(ffff8000299ddff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5