uvm_fault(0xffffffff82b29970, 0xffff80000d88f004, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ufs_lookup+0x4ce: movzwl 0x4(%r15,%r13,1),%ebx TID PID UID PRFLAGS PFLAGS CPU COMMAND *441763 10202 0 0x2 0 0K syz-executor.3 ufs_lookup() at ufs_lookup+0x4ce sys/ufs/ufs/ufs_lookup.c:281 VOP_LOOKUP(fffffd806c3ff268,ffff8000246a3fe8,ffff8000246a4018) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000246a3fb8) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 namei(ffff8000246a3fb8) at namei+0x36a sys/kern/vfs_lookup.c:245 dounlinkat(ffff800028b13268,ffffff9c,7f7ffffd4f00,8) at dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 syscall(ffff8000246a4190) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000246a4190) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4ef0, count: 8 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: uvm_fault(0xffffffff82b29970, 0xffff80000d88f004, 0, 1) -> d ddb{0}> trace ufs_lookup() at ufs_lookup+0x4ce sys/ufs/ufs/ufs_lookup.c:281 VOP_LOOKUP(fffffd806c3ff268,ffff8000246a3fe8,ffff8000246a4018) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000246a3fb8) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 namei(ffff8000246a3fb8) at namei+0x36a sys/kern/vfs_lookup.c:245 dounlinkat(ffff800028b13268,ffffff9c,7f7ffffd4f00,8) at dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 syscall(ffff8000246a4190) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000246a4190) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4ef0, count: -7 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000246a3df0 rbx 0 rdx 0 rcx 0xffffffff rax 0xfffffd8057490c60 r8 0xffffffffffffffff r9 0xfffffd807f7d86c0 r10 0xbcec98ad9aead310 r11 0x13ea55703e2052df r12 0 r13 0 r14 0 r15 0xffff80000d88f000 rip 0xffffffff8179f99e ufs_lookup+0x4ce cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff8000246a3cf0 ss 0x10 ufs_lookup+0x4ce: movzwl 0x4(%r15,%r13,1),%ebx ddb{0}> show proc PROC (syz-executor.3) pid=441763 stat=onproc flags process=2 proc=0 pri=17, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800028b12a88,0xffff800028b13a58 process=0xffff8000ffff0020 user=0xffff80002469f000, vmspace=0xfffffd80649fed10 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 84241 218537 44617 0 3 0x80 nanoslp syz-executor.6 84241 472313 44617 0 3 0x4000080 ttyin syz-executor.6 84241 257021 44617 0 3 0x4000080 fsleep syz-executor.6 30837 328884 46492 0 2 0 syz-executor.2 30837 433254 46492 0 3 0x4000080 fsleep syz-executor.2 33901 502761 65867 0 2 0x482 syz-executor.7 12066 79605 65867 0 2 0x2 syz-executor.4 5918 294129 65867 0 3 0x82 piperd syz-executor.5 *10202 441763 65867 0 7 0x2 syz-executor.3 46492 242054 65867 0 3 0x82 nanoslp syz-executor.2 44617 240700 65867 0 3 0x82 nanoslp syz-executor.6 65430 90496 1 0 3 0x100083 ttyin getty 53409 24150 65867 0 3 0x82 piperd syz-executor.0 23778 493228 65867 0 2 0x2 syz-executor.1 21861 59376 0 0 3 0x14200 bored sosplice 68680 248450 0 0 3 0x14280 nfsidl nfsio 81300 290851 0 0 3 0x14280 nfsidl nfsio 1471 310525 0 0 3 0x14280 nfsidl nfsio 97083 513865 0 0 3 0x14280 nfsidl nfsio 22978 499258 0 0 3 0x14280 nfsidl nfsio 78847 233139 0 0 3 0x14280 nfsidl nfsio 36541 350958 0 0 3 0x14280 nfsidl nfsio 10620 366898 0 0 3 0x14280 nfsidl nfsio 85067 174952 0 0 3 0x14280 nfsidl nfsio 32773 306288 0 0 3 0x14280 nfsidl nfsio 53820 254703 0 0 3 0x14280 nfsidl nfsio 70405 458393 0 0 3 0x14280 nfsidl nfsio 56968 39129 0 0 3 0x14280 nfsidl nfsio 87230 219563 0 0 3 0x14280 nfsidl nfsio 97588 266130 0 0 3 0x14280 nfsidl nfsio 21538 122463 0 0 3 0x14280 nfsidl nfsio 19611 510946 0 0 3 0x14280 nfsidl nfsio 22050 154639 0 0 3 0x14280 nfsidl nfsio 41504 279651 0 0 3 0x14280 nfsidl nfsio 7599 325999 0 0 3 0x14280 nfsidl nfsio 65867 115043 58428 0 3 0x82 thrsleep syz-fuzzer 65867 437355 58428 0 2 0x4000482 syz-fuzzer 65867 185174 58428 0 3 0x4000082 thrsleep syz-fuzzer 65867 79455 58428 0 3 0x4000082 thrsleep syz-fuzzer 65867 478122 58428 0 2 0x4000482 syz-fuzzer 65867 327995 58428 0 3 0x4000082 thrsleep syz-fuzzer 65867 382538 58428 0 2 0x4000002 syz-fuzzer 65867 200815 58428 0 3 0x4000082 thrsleep syz-fuzzer 65867 514422 58428 0 3 0x4000082 thrsleep syz-fuzzer 58428 290696 58130 0 3 0x10008a sigsusp ksh 58130 325326 21239 0 2 0x12 sshd 21239 375492 1 0 3 0x88 poll sshd 17553 190568 70477 74 3 0x100092 bpf pflogd 70477 395996 1 0 3 0x80 netio pflogd 73620 467841 51848 73 3 0x100090 kqread syslogd 51848 183607 1 0 3 0x100082 netio syslogd 22151 86707 1 0 3 0x100080 kqread resolvd 939 385702 37087 77 3 0x100092 kqread dhcpleased 79573 159883 37087 77 3 0x100092 kqread dhcpleased 37087 214513 1 0 3 0x80 kqread dhcpleased 30694 297766 0 0 3 0x14200 bored smr 18720 385865 0 0 2 0x14200 zerothread 20649 207503 0 0 3 0x14200 aiodoned aiodoned 73150 155708 0 0 3 0x14200 syncer update 37594 244882 0 0 3 0x14200 cleaner cleaner 36769 358197 0 0 3 0x14200 reaper reaper 60960 396223 0 0 3 0x14200 pgdaemon pagedaemon 19493 137110 0 0 3 0x14200 bored viomb 74961 146054 0 0 3 0x40014200 acpi0 acpi0 71320 38644 0 0 7 0x40014200 idle1 92449 257987 0 0 3 0x14200 bored softnet 23190 369644 0 0 3 0x14200 bored systqmp 48503 66968 0 0 3 0x14200 bored systq 64606 9612 0 0 2 0x40014200 softclock 39284 69512 0 0 3 0x40014200 idle0 1 402199 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 12066 (syz-executor.4) thread 0xffff800028b10010 (79605) exclusive rrwlock inode r = 0 (0xfffffd805b4d3a28) #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 (0xfffffd8067b25d58) #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 10202 (syz-executor.3) thread 0xffff800028b13268 (441763) exclusive rrwlock inode r = 0 (0xfffffd80687c0700) #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 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82aa6758) #0 witness_lock+0x44d #1 syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline] #1 syscall+0x3ef sys/arch/amd64/amd64/trap.c:585 #2 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10220 6575K 7281K 78643K 44398 0 pcb 13 16K 18K 78643K 2153 0 rtable 298 32K 33K 78643K 5536 0 ifaddr 113 26K 27K 78643K 1925 0 sysctl 3 1K 1K 78643K 3 0 counters 56 35K 36K 78643K 414 0 ioctlops 0 0K 4K 78643K 4630 0 iov 0 0K 16K 78643K 1096 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1597 100K 100K 78643K 12163 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 137 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 269 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 12 41K 93K 78643K 13875 0 sigio 0 0K 0K 78643K 73 0 proc 71 87K 124K 78643K 2406 0 subproc 104 6K 6K 78643K 800 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 976 0 in_multi 91 6K 7K 78643K 1040 0 ether_multi 1 0K 0K 78643K 143 0 mrt 47 2K 3K 78643K 94 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 235 1049K 1049K 78643K 235 0 exec 0 0K 2K 78643K 3504 0 pfkey data 0 0K 0K 78643K 4 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 523 852K 854K 78643K 170926 0 UVM aobj 134 7K 7K 78643K 139 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 896 0 NDP 14 0K 1K 78643K 327 0 temp 158 4739K 8825K 78643K 122984 0 kqueue 13 20K 26K 78643K 740 0 SYN cache 2 8K 16K 78643K 3 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 120 992 0 989 16 15 1 3 0 8 0 rtentry 112 775 0 674 4 1 3 4 0 8 0 unpcb 136 9656 0 9641 106 105 1 8 0 8 0 syncache 296 15 0 15 4 4 0 1 0 8 0 sackhl 24 2 1 2 2 2 0 1 0 8 0 tcpqe 32 3 0 3 1 1 0 1 0 8 0 tcpcb 736 14333 0 14279 268 260 8 21 0 8 3 arp 120 121 0 103 1 0 1 1 0 8 0 inpcb 304 26222 0 26211 229 222 7 17 0 8 5 rttmr 72 9 0 9 3 3 0 1 0 8 0 ip6q 72 6 0 6 2 2 0 1 0 8 0 ip6af 40 18 0 18 2 2 0 1 0 8 0 nd6 48 201 0 178 1 0 1 1 0 8 0 pkpcb 40 225 0 225 8 8 0 1 0 8 0 kcovpl 48 53 0 45 1 0 1 1 0 8 0 ppxss 1248 49 0 49 14 13 1 1 0 8 1 pfstscr 40 172 0 170 9 8 1 1 0 8 0 pffrag 232 56 0 56 6 5 1 1 0 482 1 pffrnode 88 56 0 56 6 5 1 1 0 8 1 pffrent 40 657 0 657 6 5 1 1 0 8 1 pfosfp 40 1435 0 1011 5 0 5 5 0 8 0 pfosfpen 112 1435 0 720 21 0 21 21 0 8 0 pfrke_plain 168 65 0 65 4 4 0 1 0 8 0 pfrktable 1344 1433 0 1403 9 6 3 3 0 8 0 pftag 88 9 0 3 1 0 1 1 0 8 0 pfqueue 264 3 0 3 1 1 0 1 0 8 0 pfstitem 24 32 0 28 1 0 1 1 0 8 0 pfstkey 112 278 0 274 1 0 1 1 0 8 0 pfstate 320 149 0 146 2 1 1 2 0 8 0 pfrule 1360 676 0 552 14 3 11 11 0 8 0 art_heap8 4096 3 0 2 3 2 1 3 0 8 0 art_heap4 256 3159 0 2736 56 28 28 30 0 8 0 art_table 32 3162 0 2738 4 0 4 4 0 8 0 art_node 16 766 0 677 1 0 1 1 0 8 0 sysvmsgpl 40 29 0 18 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 267 0 257 1 0 1 1 0 8 0 shmpl 112 136 0 8 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 19583 0 18103 93 0 93 93 0 8 0 ffsino 272 19583 0 18103 100 0 100 100 0 8 0 nchpl 144 38057 0 36433 63 0 63 63 0 8 0 rtmask 32 40 0 40 3 3 0 1 0 8 0 uvmvnodes 80 7343 0 0 150 0 150 150 0 8 0 vnodes 224 7343 0 0 432 0 432 432 0 8 0 namei 1024 137414 0 137412 8 7 1 2 0 8 0 percpumem 16 219 0 179 1 0 1 1 0 8 0 vcpupl 2048 214 0 0 27 0 27 27 0 8 0 vmpool 560 231 0 17 16 0 16 16 0 8 0 pfiaddrpl 120 485 0 442 3 1 2 2 0 8 0 scsiplug 72 10 0 10 3 3 0 1 0 8 0 scxspl 216 118461 0 118461 20 19 1 8 0 8 1 plimitpl 152 2481 0 2465 1 0 1 1 0 8 0 sigapl 424 14113 0 14053 8 0 8 8 0 8 0 futexpl 64 140290 0 140288 9 8 1 1 0 8 0 knotepl 112 201 0 0 4 0 4 4 0 8 0 kqueuepl 216 3181 0 3172 69 68 1 7 0 8 0 pipepl 336 3066 0 3038 79 71 8 10 0 8 5 fdescpl 496 14075 0 14050 5 1 4 5 0 8 0 filepl 152 108048 0 107801 183 165 18 24 0 8 7 lockfpl 104 4046 0 4044 12 11 1 2 0 8 0 lockfspl 48 1375 0 1373 1 0 1 1 0 8 0 sessionpl 144 71 0 54 1 0 1 1 0 8 0 pgrppl 48 168 0 151 1 0 1 1 0 8 0 ucredpl 96 11725 0 11712 1 0 1 1 0 8 0 zombiepl 144 14053 0 14052 2 1 1 1 0 8 0 processpl 1064 14113 0 14052 5 0 5 5 0 8 0 procpl 672 35394 0 35322 20 12 8 9 0 8 0 srpgc 96 56 0 56 13 13 0 1 0 8 0 sosppl 168 118 0 118 24 23 1 1 0 8 1 sockpl 480 37158 0 37128 804 792 12 37 0 8 7 mcl64k 65536 24 0 0 3 1 2 3 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 14 0 0 2 0 2 2 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 11 0 0 2 0 2 2 0 8 0 mcl4k 4096 16 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 194 0 0 18 0 18 18 0 8 0 mtagpl 96 1007 0 0 21 0 21 21 0 8 0 mbufpl 256 2208 0 0 118 0 118 118 0 8 0 bufpl 288 25029 0 17685 525 0 525 525 0 8 0 anonpl 24 3914547 0 3893830 296 144 152 164 0 186 0 amapchunkpl 152 437180 0 436403 149 107 42 51 0 158 0 amappl16 200 38420 0 37605 169 123 46 56 0 8 0 amappl15 192 3192 0 3185 1 0 1 1 0 8 0 amappl14 184 1292 0 1285 1 0 1 1 0 8 0 amappl13 176 1132 0 1130 1 0 1 1 0 8 0 amappl12 168 1441 0 1438 1 0 1 1 0 8 0 amappl11 160 1620 0 1602 1 0 1 1 0 8 0 amappl10 152 2529 0 2523 1 0 1 1 0 8 0 amappl9 144 1758 0 1754 1 0 1 1 0 8 0 amappl8 136 3928 0 3786 5 0 5 5 0 8 0 amappl7 128 2463 0 2448 1 0 1 1 0 8 0 amappl6 120 1635 0 1606 2 1 1 2 0 8 0 amappl5 112 13392 0 13371 4 3 1 2 0 8 0 amappl4 104 5456 0 5410 2 0 2 2 0 8 0 amappl3 96 3164 0 3148 1 0 1 1 0 8 0 amappl2 88 2862 0 2795 3 1 2 3 0 8 0 amappl1 80 251063 0 250537 19 5 14 19 0 8 0 amappl 88 169325 0 169030 9 0 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 72 138 0 5 3 0 3 3 0 8 0 uaddrrnd 24 14306 0 14067 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 14306 0 14067 2 0 2 2 0 8 0 vmmpekpl 168 93651 0 93570 5 0 5 5 0 8 0 vmmpepl 168 1284287 0 1281077 422 245 177 185 0 357 13 vmsppl 368 14305 0 14067 24 1 23 23 0 8 0 rwobjpl 56 305714 0 296305 155 20 135 135 0 8 0 pdppl 4096 28619 0 28348 744 461 283 284 0 8 12 pvpl 32 6751937 0 6728513 596 372 224 278 0 265 0 pmappl 248 14305 0 14067 17 1 16 16 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 2091 0 836 36 0 36 36 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ufs_lookup() at ufs_lookup+0x4ce sys/ufs/ufs/ufs_lookup.c:281 VOP_LOOKUP(fffffd806c3ff268,ffff8000246a3fe8,ffff8000246a4018) at VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000246a3fb8) at vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 namei(ffff8000246a3fb8) at namei+0x36a sys/kern/vfs_lookup.c:245 dounlinkat(ffff800028b13268,ffffff9c,7f7ffffd4f00,8) at dounlinkat+0x99 sys/kern/vfs_syscalls.c:1849 syscall(ffff8000246a4190) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000246a4190) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd4ef0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) 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(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) 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(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5