panic: bad dir Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 222820 82377 0 0 0 1 syz-executor.1 *173275 31690 0 0 0 0K dhcpleased db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff8247eb97) 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(fffffd807b6fe818,ffff8000211dcc48,ffff8000211dcc78) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000211dcc18) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 namei(ffff8000211dcc18) at namei+0x36a sys/kern/vfs_lookup.c:245 vn_open(ffff8000211dcc18,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:146 doopenat(ffff800021193ce8,ffffff9c,7f7ffffbe7f0,0,0,ffff8000211dce00) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff8000211dce70) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211dce70) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe7e0, 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(ffffffff8247eb97) 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(fffffd807b6fe818,ffff8000211dcc48,ffff8000211dcc78) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000211dcc18) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 namei(ffff8000211dcc18) at namei+0x36a sys/kern/vfs_lookup.c:245 vn_open(ffff8000211dcc18,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:146 doopenat(ffff800021193ce8,ffffff9c,7f7ffffbe7f0,0,0,ffff8000211dce00) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff8000211dce70) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211dce70) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe7e0, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000211dc6d0 rbx 0xffffffff827dbbff cpu_info_full_primary+0x2bff rdx 0 rcx 0 rax 0xffff800021193ce8 r8 0x101010101010101 r9 0x8080808080808080 r10 0x5924d1ef43fd4c4c r11 0xbb28e5d9d9d64b5b r12 0xffffffff827dba00 cpu_info_full_primary+0x2a00 r13 0 r14 0 r15 0x1 rip 0xffffffff820ed2c8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000211dc6c0 ss 0 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (dhcpleased) pid=173275 stat=onproc flags process=0 proc=0 pri=17, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000211922a8,0xffff8000ffff7d00 process=0xffff8000ffff8008 user=0xffff8000211d7000, vmspace=0xfffffd8008586450 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 82377 222820 62979 0 7 0 syz-executor.1 12494 220461 94872 0 2 0 syz-executor.0 48982 79690 49818 0 2 0 syz-executor.2 48982 502656 49818 0 3 0x4000080 fsleep syz-executor.2 6580 414856 1 0 3 0x100083 ttyin getty 94872 247463 32381 0 2 0x482 syz-executor.0 95499 178858 32381 0 3 0x82 nanoslp syz-executor.3 49818 117130 32381 0 3 0x82 nanoslp syz-executor.2 62979 521799 32381 0 3 0x82 nanoslp syz-executor.1 11073 315703 0 0 3 0x14280 nfsidl nfsio 435 183168 0 0 3 0x14280 nfsidl nfsio 74099 147175 0 0 3 0x14280 nfsidl nfsio 54994 328978 0 0 3 0x14280 nfsidl nfsio 46184 29032 0 0 3 0x14280 nfsidl nfsio 14258 257310 0 0 3 0x14280 nfsidl nfsio 68379 27759 0 0 3 0x14280 nfsidl nfsio 61854 350700 0 0 3 0x14280 nfsidl nfsio 66141 21169 0 0 3 0x14280 nfsidl nfsio 69952 297249 0 0 3 0x14280 nfsidl nfsio 80813 388707 0 0 3 0x14280 nfsidl nfsio 80222 277513 0 0 3 0x14280 nfsidl nfsio 80652 359637 0 0 3 0x14280 nfsidl nfsio 63861 520112 0 0 3 0x14280 nfsidl nfsio 82309 510402 0 0 3 0x14280 nfsidl nfsio 3773 458713 0 0 3 0x14280 nfsidl nfsio 67171 90301 0 0 3 0x14280 nfsidl nfsio 73024 192214 0 0 3 0x14280 nfsidl nfsio 47002 55319 0 0 3 0x14280 nfsidl nfsio 96497 81630 0 0 3 0x14280 nfsidl nfsio 76172 238288 0 0 3 0x14200 bored sosplice 32381 256433 77664 0 3 0x82 thrsleep syz-fuzzer 32381 461940 77664 0 2 0x4000482 syz-fuzzer 32381 443635 77664 0 3 0x4000082 thrsleep syz-fuzzer 32381 503141 77664 0 3 0x4000082 thrsleep syz-fuzzer 32381 24361 77664 0 3 0x4000082 thrsleep syz-fuzzer 32381 215629 77664 0 3 0x4000082 kqread syz-fuzzer 32381 400206 77664 0 3 0x4000082 thrsleep syz-fuzzer 32381 521741 77664 0 3 0x4000082 thrsleep syz-fuzzer 32381 88994 77664 0 3 0x4000082 thrsleep syz-fuzzer 77664 419236 48163 0 3 0x10008a sigsusp ksh 48163 167646 19766 0 3 0x9a poll sshd 19766 436321 1 0 3 0x88 poll sshd 92516 325451 18748 74 3 0x100092 bpf pflogd 18748 344875 1 0 3 0x80 netio pflogd 45438 429703 75856 73 3 0x100090 kqread syslogd 75856 66647 1 0 3 0x100082 netio syslogd 61568 195472 1 0 3 0x100080 kqread resolvd 66466 276932 31690 77 3 0x100092 kqread dhcpleased 92037 162193 31690 77 3 0x100092 kqread dhcpleased *31690 173275 1 0 7 0 dhcpleased 75715 177656 0 0 3 0x14200 bored smr 61601 342425 0 0 2 0x14200 zerothread 15154 263370 0 0 3 0x14200 aiodoned aiodoned 33792 148803 0 0 3 0x14200 syncer update 14044 232712 0 0 3 0x14200 cleaner cleaner 67725 224494 0 0 3 0x14200 reaper reaper 58321 195115 0 0 3 0x14200 pgdaemon pagedaemon 31540 187336 0 0 3 0x14200 bored viomb 16123 487648 0 0 3 0x40014200 acpi0 acpi0 5032 200877 0 0 3 0x40014200 idle1 39053 111676 0 0 3 0x14200 bored softnet 90146 336108 0 0 3 0x14200 bored systqmp 61009 225909 0 0 3 0x14200 bored systq 14796 428226 0 0 2 0x40014200 softclock 3652 3552 0 0 3 0x40014200 idle0 1 364647 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 31690 (dhcpleased) thread 0xffff800021193ce8 (173275) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8293dc80) #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 10216 6585K 7272K 78643K 51164 0 pcb 13 18K 21K 78643K 3864 0 rtable 166 21K 23K 78643K 5989 0 ifaddr 82 24K 29K 78643K 2165 0 sysctl 3 1K 1K 78643K 3 0 counters 48 34K 35K 78643K 680 0 ioctlops 0 0K 8K 78643K 5942 0 iov 0 0K 28K 78643K 2621 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1588 100K 100K 78643K 15770 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 289 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 4012 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 49K 78643K 26225 0 sigio 0 0K 0K 78643K 1372 0 proc 72 87K 123K 78643K 4060 0 subproc 52 3K 3K 78643K 1333 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1830 0 in_multi 44 2K 3K 78643K 2165 0 ether_multi 1 0K 0K 78643K 399 0 mrt 3 0K 0K 78643K 135 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 211 943K 943K 78643K 211 0 exec 0 0K 2K 78643K 6525 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 549 1359K 1374K 78643K 335532 0 UVM aobj 131 8K 8K 78643K 149 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1738 0 NDP 11 0K 1K 78643K 588 0 temp 122 4220K 8316K 78643K 314038 0 kqueue 11 14K 22K 78643K 1271 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 1662 0 1659 21 20 1 3 0 8 0 rtentry 112 1506 0 1455 2 0 2 2 0 8 0 unpcb 136 17649 0 17634 189 183 6 9 0 8 5 syncache 296 108 0 108 31 31 0 1 0 8 0 tcpqe 32 39 0 39 16 16 0 1 0 8 0 tcpcb 736 27034 0 27022 532 527 5 26 0 8 3 arp 120 236 0 229 1 0 1 1 0 8 0 inpcb 304 42384 0 42376 358 352 6 14 0 8 5 rttmr 72 38 0 38 12 12 0 1 0 8 0 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 48 387 0 377 1 0 1 1 0 8 0 pkpcb 40 69 0 69 15 15 0 1 0 8 0 kcovpl 48 99 0 95 1 0 1 1 0 8 0 ppxss 1248 73 0 73 22 22 0 1 0 8 0 pfstscr 40 11 0 11 2 2 0 1 0 8 0 pffrag 232 251 0 251 12 11 1 1 0 482 1 pffrnode 88 251 0 251 12 11 1 1 0 8 1 pffrent 40 3838 0 3838 15 14 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 546 0 531 6 4 2 2 0 8 0 pftag 88 14 0 13 2 1 1 1 0 8 0 pfqueue 264 2 0 2 1 1 0 1 0 8 0 pfstitem 24 86 0 84 1 0 1 1 0 8 0 pfstkey 112 102 0 100 1 0 1 1 0 8 0 pfstate 320 94 0 92 3 2 1 3 0 8 0 pfrule 1360 574 0 530 6 2 4 4 0 8 0 art_heap8 4096 9 0 8 7 6 1 3 0 8 0 art_heap4 256 5959 0 5718 35 18 17 19 0 8 0 art_table 32 5968 0 5726 5 2 3 3 0 8 0 art_node 16 1504 0 1464 1 0 1 1 0 8 0 sysvmsgpl 40 48 0 8 1 0 1 1 0 8 0 semapl 112 3976 0 3966 1 0 1 1 0 8 0 shmpl 112 146 0 18 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 35557 0 34056 95 0 95 95 0 8 0 ffsino 272 35557 0 34056 101 0 101 101 0 8 0 nchpl 144 73365 0 71767 61 0 61 61 0 8 0 uvmvnodes 80 6174 0 0 126 0 126 126 0 8 0 vnodes 224 6174 0 0 364 0 364 364 0 8 0 namei 1024 255111 0 255110 4 3 1 1 0 8 0 percpumem 16 352 0 316 1 0 1 1 0 8 0 vcpupl 2048 279 0 0 35 0 35 35 0 8 0 vmpool 560 512 0 233 25 5 20 21 0 8 0 pfiaddrpl 120 183 0 163 3 2 1 1 0 8 0 scsiplug 72 15 0 15 5 5 0 1 0 8 0 scxspl 216 212788 0 212788 69 68 1 8 0 8 1 plimitpl 152 2733 0 2722 1 0 1 1 0 8 0 sigapl 424 26228 0 26171 8 1 7 7 0 8 0 futexpl 64 233309 0 233308 8 7 1 1 0 8 0 knotepl 112 392 0 0 4 1 3 4 0 8 0 kqueuepl 216 5937 0 5930 103 102 1 6 0 8 0 pipepl 336 7732 0 7716 208 202 6 10 0 8 4 fdescpl 496 26168 0 26146 8 5 3 4 0 8 0 filepl 152 199678 0 199525 322 308 14 19 0 8 7 lockfpl 104 8659 0 8657 15 14 1 4 0 8 0 lockfspl 48 2609 0 2607 1 0 1 1 0 8 0 sessionpl 144 119 0 106 1 0 1 1 0 8 0 pgrppl 48 269 0 256 1 0 1 1 0 8 0 ucredpl 96 21160 0 21148 1 0 1 1 0 8 0 zombiepl 144 26171 0 26170 2 1 1 1 0 8 0 processpl 1064 26228 0 26170 4 0 4 4 0 8 0 procpl 672 78075 0 78008 28 21 7 8 0 8 0 srpgc 96 104 0 104 21 21 0 1 0 8 0 sosppl 168 239 0 239 40 39 1 1 0 8 1 sockpl 480 61931 0 61905 1032 1020 12 37 0 8 8 mcl64k 65536 48 0 0 3 1 2 3 0 8 0 mcl16k 16384 54 0 0 6 4 2 3 0 8 0 mcl12k 12288 64 0 0 2 0 2 2 0 8 0 mcl9k 9216 47 0 0 3 1 2 2 0 8 0 mcl8k 8192 49 0 0 5 2 3 3 0 8 1 mcl4k 4096 65 0 0 5 2 3 3 0 8 0 mcl2k2 2112 15 0 0 1 0 1 1 0 8 0 mcl2k 2048 544 0 0 24 7 17 24 0 8 0 mtagpl 96 1130 0 0 11 2 9 9 0 8 0 mbufpl 256 3176 0 0 133 0 133 133 0 8 0 bufpl 288 46553 0 40236 454 0 454 454 0 8 0 anonpl 24 7638148 0 7611082 484 312 172 198 0 186 0 amapchunkpl 152 843821 0 842977 224 184 40 49 0 158 3 amappl16 200 74432 0 73360 236 173 63 70 0 8 0 amappl15 192 1750 0 1750 5 5 0 1 0 8 0 amappl14 184 814 0 810 1 0 1 1 0 8 0 amappl13 176 4910 0 4905 1 0 1 1 0 8 0 amappl12 168 4312 0 4306 1 0 1 1 0 8 0 amappl11 160 3788 0 3772 1 0 1 1 0 8 0 amappl10 152 2707 0 2698 1 0 1 1 0 8 0 amappl9 144 5588 0 5586 1 0 1 1 0 8 0 amappl8 136 5311 0 5193 6 1 5 5 0 8 0 amappl7 128 3348 0 3336 1 0 1 1 0 8 0 amappl6 120 5852 0 5825 1 0 1 1 0 8 0 amappl5 112 21488 0 21460 2 1 1 2 0 8 0 amappl4 104 8746 0 8715 1 0 1 1 0 8 0 amappl3 96 9422 0 9400 1 0 1 1 0 8 0 amappl2 88 8351 0 8288 4 2 2 2 0 8 0 amappl1 80 479963 0 479488 13 2 11 13 0 8 0 amappl 88 332934 0 332655 9 1 8 8 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 72 148 0 18 3 0 3 3 0 8 0 uaddrrnd 24 26680 0 26379 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 26680 0 26379 2 0 2 2 0 8 0 vmmpekpl 168 190451 0 190383 4 0 4 4 0 8 0 vmmpepl 168 2433971 0 2430555 742 576 166 187 0 357 1 vmsppl 368 26679 0 26379 28 0 28 28 0 8 0 rwobjpl 56 594090 0 585703 161 41 120 123 0 8 0 pdppl 4096 53368 0 53037 436 103 333 335 0 8 2 pvpl 32 12751060 0 12729043 679 482 197 258 0 265 0 pmappl 248 26679 0 26379 19 0 19 19 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 2123 0 879 38 2 36 36 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(ffffffff8247eb97) 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(fffffd807b6fe818,ffff8000211dcc48,ffff8000211dcc78) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000211dcc18) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 namei(ffff8000211dcc18) at namei+0x36a sys/kern/vfs_lookup.c:245 vn_open(ffff8000211dcc18,1,0) at vn_open+0x105 sys/kern/vfs_vnops.c:146 doopenat(ffff800021193ce8,ffffff9c,7f7ffffbe7f0,0,0,ffff8000211dce00) at doopenat+0x26a sys/kern/vfs_syscalls.c:1128 syscall(ffff8000211dce70) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000211dce70) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbe7e0, 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 __mp_lock(ffffffff8293da78) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8293da78) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff800027b188c0) at syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800027b188c0) at syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb040, count: 9 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 __mp_lock(ffffffff8293da78) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff8293da78) at __mp_lock+0x122 sys/kern/kern_lock.c:147 syscall(ffff800027b188c0) at syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] syscall(ffff800027b188c0) at syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb040, count: -6