panic: bad dir Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *293987 25091 0 0 0 0K dhcpleased db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82481758) 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(fffffd806f03b658,ffff8000211dc858,ffff8000211dc888) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000211dc828) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 namei(ffff8000211dc828) at namei+0x36a sys/kern/vfs_lookup.c:245 vn_open(ffff8000211dc828,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:146 doopenat(ffff800021193268,ffffff9c,7f7ffffd2480,0,0,ffff8000211dca10) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff8000211dca80) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211dca80) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd2470, 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(ffffffff82481758) 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(fffffd806f03b658,ffff8000211dc858,ffff8000211dc888) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000211dc828) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 namei(ffff8000211dc828) at namei+0x36a sys/kern/vfs_lookup.c:245 vn_open(ffff8000211dc828,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:146 doopenat(ffff800021193268,ffffff9c,7f7ffffd2480,0,0,ffff8000211dca10) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff8000211dca80) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211dca80) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd2470, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000211dc2e0 rbx 0xffffffff827dabff cpu_info_full_primary+0x2bff rdx 0 rcx 0 rax 0xffff800021193268 r8 0x101010101010101 r9 0x8080808080808080 r10 0xecdc63c025bb9f84 r11 0xf1374364f36661d7 r12 0xffffffff827daa00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff8228d3c8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000211dc2d0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (dhcpleased) pid=293987 stat=onproc flags process=0 proc=0 pri=17, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800021193508,0xffff8000ffff7a60 process=0xffff8000ffff94d0 user=0xffff8000211d7000, vmspace=0xfffffd807efffa10 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 57367 401311 37849 0 2 0 syz-executor.1 57367 429447 37849 0 2 0x4000000 syz-executor.1 63936 160958 55808 0 2 0 syz-executor.0 63936 505508 55808 0 3 0x4000080 netio syz-executor.0 37849 2291 22061 0 2 0x482 syz-executor.1 96725 40086 22061 0 3 0x82 nanoslp syz-executor.2 99981 388330 22061 0 2 0x2 syz-executor.3 55808 443344 22061 0 3 0x82 nanoslp syz-executor.0 43191 307566 0 0 3 0x14200 acct acct 62808 400910 1 0 3 0x100083 ttyin getty 19139 17011 0 0 3 0x14200 bored sosplice 22061 480551 10412 0 3 0x82 thrsleep syz-fuzzer 22061 362675 10412 0 3 0x4000082 nanoslp syz-fuzzer 22061 355826 10412 0 3 0x4000082 thrsleep syz-fuzzer 22061 336969 10412 0 3 0x4000082 thrsleep syz-fuzzer 22061 390803 10412 0 3 0x4000082 thrsleep syz-fuzzer 22061 182986 10412 0 3 0x4000082 thrsleep syz-fuzzer 22061 261152 10412 0 3 0x4000082 thrsleep syz-fuzzer 22061 466587 10412 0 3 0x4000082 nanoslp syz-fuzzer 22061 225262 10412 0 3 0x4000082 kqread syz-fuzzer 10412 222558 98706 0 3 0x10008a sigsusp ksh 98706 20531 58441 0 3 0x9a poll sshd 58441 51098 1 0 3 0x88 poll sshd 81939 103772 1457 74 3 0x100092 bpf pflogd 1457 454255 1 0 3 0x80 netio pflogd 67861 13646 61846 73 3 0x100090 kqread syslogd 61846 322414 1 0 3 0x100082 netio syslogd 69725 26792 1 0 3 0x100080 kqread resolvd 18164 195111 25091 77 3 0x100092 kqread dhcpleased 51209 411363 25091 77 3 0x100092 kqread dhcpleased *25091 293987 1 0 7 0 dhcpleased 39694 82507 0 0 3 0x14200 bored smr 19955 177426 0 0 2 0x14200 zerothread 87441 195394 0 0 3 0x14200 aiodoned aiodoned 1846 38096 0 0 3 0x14200 syncer update 63206 175583 0 0 3 0x14200 cleaner cleaner 10299 223036 0 0 3 0x14200 reaper reaper 85378 353171 0 0 3 0x14200 pgdaemon pagedaemon 20143 502701 0 0 3 0x14200 bored viomb 16704 445235 0 0 3 0x40014200 acpi0 acpi0 74694 344513 0 0 7 0x40014200 idle1 17359 459906 0 0 3 0x14200 bored softnet 4900 78562 0 0 3 0x14200 bored systqmp 97524 423341 0 0 3 0x14200 bored systq 96159 507232 0 0 3 0x40014200 bored softclock 27788 399992 0 0 3 0x40014200 idle0 1 421835 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 99981 (syz-executor.3) thread 0xffff80002123d7a0 (388330) exclusive rrwlock inode r = 0 (0xfffffd8076daf920) #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 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #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 (0xfffffd806f90b5f8) #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 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 #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 25091 (dhcpleased) thread 0xffff800021193268 (293987) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff829c30a0) #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 (0xfffffd806f0872c0) #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 10295 6581K 7146K 78643K 71492 0 pcb 13 24K 28K 78643K 20915 0 rtable 195 33K 35K 78643K 11668 0 ifaddr 142 40K 42K 78643K 3886 0 sysctl 3 1K 1K 78643K 3 0 counters 48 34K 35K 78643K 998 0 ioctlops 0 0K 8K 78643K 15410 0 iov 0 0K 20K 78643K 3884 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1423 89K 90K 78643K 23100 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 374 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 22 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 8 25K 49K 78643K 47310 0 sigio 0 0K 0K 78643K 853 0 proc 71 87K 111K 78643K 5906 0 subproc 52 3K 3K 78643K 1902 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 2384 0 in_multi 34 2K 4K 78643K 5117 0 ether_multi 1 0K 0K 78643K 589 0 mrt 1 0K 0K 78643K 275 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 307 1367K 1367K 78643K 307 0 exec 0 0K 2K 78643K 8256 0 pfkey data 0 0K 1K 78643K 12 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 720 1692K 1708K 78643K 596473 0 UVM aobj 131 4K 4K 78643K 140 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 2546 0 NDP 10 0K 1K 78643K 1297 0 temp 136 4260K 8340K 78643K 368229 0 kqueue 12 18K 28K 78643K 1584 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 3914 0 3911 35 34 1 3 0 8 0 rtentry 112 3056 0 3016 3 1 2 2 0 8 0 unpcb 136 22283 0 22268 262 256 6 9 0 8 5 syncache 296 253 0 253 50 49 1 1 0 8 1 sackhl 24 1 1 1 1 1 0 1 0 8 0 tcpqe 32 212 254 212 5 5 0 1 0 8 0 tcpcb 736 16854 0 16778 513 506 7 26 0 8 0 arp 120 394 0 387 1 0 1 1 0 8 0 inpcb 304 80371 0 80294 625 615 10 17 0 8 4 rttmr 72 79 0 79 29 29 0 1 0 8 0 ip6q 72 3 0 3 1 1 0 1 0 8 0 ip6af 40 9 0 9 1 1 0 1 0 8 0 nd6 48 1002 0 996 1 0 1 1 0 8 0 pkpcb 40 231 0 231 23 23 0 1 0 8 0 kcovpl 48 144 0 140 1 0 1 1 0 8 0 ppxss 1248 85 0 85 28 28 0 1 0 8 0 pfstscr 40 163 0 163 9 9 0 1 0 8 0 pffrag 232 326 0 326 23 22 1 1 0 482 1 pffrnode 88 324 0 324 23 22 1 1 0 8 1 pffrent 40 2413 0 2413 24 23 1 1 0 8 1 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 1077 0 1035 15 11 4 4 0 8 0 pftag 88 51 0 41 1 0 1 1 0 8 0 pfqueue 264 45 0 6 5 2 3 3 0 8 0 pfstitem 24 47 0 45 1 0 1 1 0 8 0 pfstkey 112 243 0 241 1 0 1 1 0 8 0 pfstate 320 143 0 141 3 2 1 3 0 8 0 pfsrctr 152 46 0 46 4 4 0 1 0 8 0 pfrule 1360 5506 0 5221 27 3 24 24 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 11358 0 11162 62 47 15 20 0 8 0 art_table 32 11360 0 11162 4 1 3 3 0 8 0 art_node 16 3044 0 3011 1 0 1 1 0 8 0 sysvmsgpl 40 107 0 70 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 16 0 6 1 0 1 1 0 8 0 shmpl 112 137 0 9 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 62139 0 60614 96 0 96 96 0 8 0 ffsino 272 62139 0 60614 102 0 102 102 0 8 0 nchpl 144 121779 0 120185 61 0 61 61 0 8 0 uvmvnodes 80 6694 0 0 137 0 137 137 0 8 0 vnodes 224 6694 0 0 394 0 394 394 0 8 0 namei 1024 434880 0 434879 4 3 1 1 0 8 0 percpumem 16 511 0 475 1 0 1 1 0 8 0 vcpupl 2048 381 0 2 48 0 48 48 0 8 0 vmpool 560 514 0 135 31 3 28 28 0 8 0 pfiaddrpl 120 1162 0 1031 10 6 4 5 0 8 0 scsiplug 72 31 0 31 8 8 0 1 0 8 0 scxspl 216 383450 0 383450 70 69 1 8 0 8 1 plimitpl 152 5171 0 5160 1 0 1 1 0 8 0 sigapl 424 47156 0 47119 7 1 6 7 0 8 0 futexpl 64 453140 0 453140 8 7 1 1 0 8 1 knotepl 112 481 0 0 4 0 4 4 0 8 0 kqueuepl 216 9522 0 9507 252 247 5 8 0 8 4 pipepl 336 7349 0 7333 191 189 2 12 0 8 0 fdescpl 496 47118 0 47097 4 1 3 4 0 8 0 filepl 152 329811 0 329592 478 464 14 16 0 8 5 lockfpl 104 11102 0 11100 21 20 1 4 0 8 0 lockfspl 48 3347 0 3345 1 0 1 1 0 8 0 sessionpl 144 164 0 151 1 0 1 1 0 8 0 pgrppl 48 305 0 292 1 0 1 1 0 8 0 ucredpl 96 43241 0 43228 1 0 1 1 0 8 0 zombiepl 144 47119 0 47118 1 0 1 1 0 8 0 processpl 1064 47156 0 47118 4 0 4 4 0 8 0 procpl 672 134948 0 134900 56 50 6 8 0 8 0 srpgc 96 152 0 152 35 35 0 1 0 8 0 sosppl 168 286 0 286 21 20 1 1 0 8 1 sockpl 480 107003 0 106905 1599 1586 13 35 0 8 0 mcl64k 65536 84 0 0 6 4 2 4 0 8 0 mcl16k 16384 72 0 0 8 6 2 3 0 8 0 mcl12k 12288 157 0 0 9 0 9 9 0 8 0 mcl9k 9216 73 0 0 2 0 2 2 0 8 0 mcl8k 8192 107 0 0 6 2 4 4 0 8 0 mcl4k 4096 73 0 0 4 1 3 3 0 8 0 mcl2k2 2112 17 0 0 2 0 2 2 0 8 0 mcl2k 2048 976 0 0 67 4 63 66 0 8 0 mtagpl 96 1736 0 0 10 1 9 10 0 8 0 mbufpl 256 5325 0 0 296 1 295 295 0 8 0 bufpl 288 70985 0 64726 479 2 477 479 0 8 0 anonpl 24 13478180 0 13453671 850 683 167 209 0 186 0 amapchunkpl 152 1500371 0 1499643 326 293 33 46 0 158 0 amappl16 200 132735 0 131574 461 395 66 86 0 8 0 amappl15 192 5724 0 5723 13 12 1 1 0 8 0 amappl14 184 3694 0 3687 1 0 1 1 0 8 0 amappl13 176 4691 0 4688 1 0 1 1 0 8 0 amappl12 168 9583 0 9576 1 0 1 1 0 8 0 amappl11 160 10063 0 10049 1 0 1 1 0 8 0 amappl10 152 6601 0 6588 1 0 1 1 0 8 0 amappl9 144 1792 0 1790 1 0 1 1 0 8 0 amappl8 136 9948 0 9755 7 0 7 7 0 8 0 amappl7 128 7157 0 7146 1 0 1 1 0 8 0 amappl6 120 2356 0 2324 8 6 2 2 0 8 1 amappl5 112 38635 0 38603 23 21 2 2 0 8 1 amappl4 104 20567 0 20532 6 4 2 2 0 8 0 amappl3 96 15438 0 15411 1 0 1 1 0 8 0 amappl2 88 12681 0 12623 2 0 2 2 0 8 0 amappl1 80 847090 0 846607 13 1 12 13 0 8 0 amappl 88 592980 0 592653 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 72 139 0 9 3 0 3 3 0 8 0 uaddrrnd 24 47632 0 47232 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 47632 0 47232 3 0 3 3 0 8 0 vmmpekpl 168 286672 0 286594 4 0 4 4 0 8 0 vmmpepl 168 4316701 0 4311243 1377 1103 274 275 0 357 20 vmsppl 368 47631 0 47232 42 5 37 37 0 8 0 rwobjpl 56 1032606 0 1023474 222 91 131 136 0 8 0 pdppl 4096 95272 0 94843 567 134 433 434 0 8 4 pvpl 32 22464560 0 22444344 1056 862 194 252 0 265 0 pmappl 248 47631 0 47232 27 1 26 26 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 2526 0 909 48 1 47 47 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(ffffffff82481758) 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(fffffd806f03b658,ffff8000211dc858,ffff8000211dc888) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000211dc828) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 namei(ffff8000211dc828) at namei+0x36a sys/kern/vfs_lookup.c:245 vn_open(ffff8000211dc828,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:146 doopenat(ffff800021193268,ffffff9c,7f7ffffd2480,0,0,ffff8000211dca10) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff8000211dca80) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211dca80) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd2470, 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