panic: kernel diagnostic assertion "pg->wire_count == 1" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_biomem.c", line 310 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *133970 89942 0 0 0x4000000 0K syz-executor.1 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a1ae9) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff8261472b,ffffffff825fd94c,136,ffffffff825df561) at __assert+0x25 sys/kern/subr_prf.c:161 buf_free_pages(fffffd806a7df810) at buf_free_pages+0x1c2 sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd806a7df810) at buf_dealloc_mem+0xdf sys/kern/vfs_biomem.c:179 buf_put(fffffd806a7df810) at buf_put+0x161 sys/kern/vfs_bio.c:132 bufcache_recover_dmapages(0,20a07) at bufcache_recover_dmapages+0xbb sys/kern/vfs_bio.c:1577 buf_get(0,0,20a06475) at buf_get+0x142 sys/kern/vfs_bio.c:1110 geteblk(20a06475) at geteblk+0x2c sys/kern/vfs_bio.c:1064 readdisklabel(2902,ffffffff81c7a510,ffff800000c5e200,0) at readdisklabel+0x145 sys/arch/amd64/amd64/disksubr.c:96 vndopen(2902,1,2000,ffff80002af2da40) at vndopen+0x17a sys/dev/vnd.c:203 spec_open(ffff8000293e7318) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806ed8a688,1,fffffd807f7d7660,ffff80002af2da40) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff8000293e7568,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:180 end trace frame: 0xffff8000293e76e0, count: 0 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: kernel diagnostic assertion "pg->wire_count == 1" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/vfs_biomem.c", line 310 ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff825a1ae9) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff8261472b,ffffffff825fd94c,136,ffffffff825df561) at __assert+0x25 sys/kern/subr_prf.c:161 buf_free_pages(fffffd806a7df810) at buf_free_pages+0x1c2 sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd806a7df810) at buf_dealloc_mem+0xdf sys/kern/vfs_biomem.c:179 buf_put(fffffd806a7df810) at buf_put+0x161 sys/kern/vfs_bio.c:132 bufcache_recover_dmapages(0,20a07) at bufcache_recover_dmapages+0xbb sys/kern/vfs_bio.c:1577 buf_get(0,0,20a06475) at buf_get+0x142 sys/kern/vfs_bio.c:1110 geteblk(20a06475) at geteblk+0x2c sys/kern/vfs_bio.c:1064 readdisklabel(2902,ffffffff81c7a510,ffff800000c5e200,0) at readdisklabel+0x145 sys/arch/amd64/amd64/disksubr.c:96 vndopen(2902,1,2000,ffff80002af2da40) at vndopen+0x17a sys/dev/vnd.c:203 spec_open(ffff8000293e7318) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806ed8a688,1,fffffd807f7d7660,ffff80002af2da40) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff8000293e7568,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:180 doopenat(ffff80002af2da40,ffffff9c,200013c0,0,0,ffff8000293e7750) at doopenat+0x26a sys/kern/vfs_syscalls.c:1131 syscall(ffff8000293e77c0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000293e77c0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x32f7107a960, count: -17 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000293e6db0 rbx 0xffffffff829aec5f cpu_info_full_primary+0x2c5f rdx 0 rcx 0 rax 0xffff80002af2da40 r8 0x101010101010101 r9 0x8080808080808080 r10 0xad5806b0faa4b5d8 r11 0x8cf691ca268b9319 r12 0xffffffff829aea60 cpu_info_full_primary+0x2a60 r13 0 r14 0 r15 0x1 rip 0xffffffff824bfe58 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000293e6da0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.1) pid=133970 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=85, nice=20 forw=0xffffffffffffffff, list=0xffff80002af2d7a0,0xffff80002b33d510 process=0xffff8000294e3620 user=0xffff8000293e2000, vmspace=0xfffffd80726ffa18 estcpu=35, cpticks=6, pctcpu=0.0 user=0, sys=6, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 51495 340072 44768 0 2 0 syz-executor.6 51495 6176 44768 0 3 0x4000080 fsleep syz-executor.6 78937 378246 93309 0 2 0 syz-executor.7 78937 108695 93309 0 3 0x4000080 fsleep syz-executor.7 89942 405473 11387 0 2 0 syz-executor.1 *89942 133970 11387 0 7 0x4000000 syz-executor.1 64740 216125 98273 0 2 0 syz-executor.5 64740 301210 98273 0 3 0x4000080 fsleep syz-executor.5 64740 126874 98273 0 3 0x4000080 fsleep syz-executor.5 64740 484541 98273 0 3 0x4000080 fsleep syz-executor.5 655 8626 77602 0 2 0 syz-executor.3 655 207762 77602 0 3 0x4000080 kqread syz-executor.3 57373 112203 9381 0 2 0 syz-executor.4 57373 60420 9381 0 3 0x4000080 fsleep syz-executor.4 99134 176433 0 0 3 0x14200 acct acct 19923 324339 2404 0 3 0x2 biowait syz-executor.0 93309 227997 2404 0 3 0x82 nanoslp syz-executor.7 90848 22739 2404 0 3 0x82 nanoslp syz-executor.2 51064 492588 1 0 3 0x100083 ttyin getty 77602 326357 2404 0 3 0x82 nanoslp syz-executor.3 11387 55284 2404 0 3 0x82 nanoslp syz-executor.1 9381 170195 2404 0 3 0x82 nanoslp syz-executor.4 44768 186121 2404 0 3 0x82 nanoslp syz-executor.6 98273 519623 2404 0 3 0x82 nanoslp syz-executor.5 588 212435 0 0 3 0x14280 nfsidl nfsio 86388 136073 0 0 3 0x14280 nfsidl nfsio 4675 64454 0 0 3 0x14280 nfsidl nfsio 30153 116536 0 0 3 0x14280 nfsidl nfsio 40823 502738 0 0 3 0x14280 nfsidl nfsio 91816 151385 0 0 3 0x14280 nfsidl nfsio 84163 121900 0 0 3 0x14280 nfsidl nfsio 51905 187478 0 0 3 0x14280 nfsidl nfsio 53751 187730 0 0 3 0x14280 nfsidl nfsio 39445 233161 0 0 3 0x14280 nfsidl nfsio 63550 314642 0 0 3 0x14280 nfsidl nfsio 92042 291541 0 0 3 0x14280 nfsidl nfsio 88331 423056 0 0 3 0x14280 nfsidl nfsio 61042 522457 0 0 3 0x14280 nfsidl nfsio 98742 505360 0 0 3 0x14280 nfsidl nfsio 61448 394034 0 0 3 0x14280 nfsidl nfsio 8981 179240 0 0 3 0x14280 nfsidl nfsio 31325 202243 0 0 3 0x14280 nfsidl nfsio 19318 305443 0 0 3 0x14280 nfsidl nfsio 34599 500942 0 0 3 0x14280 nfsidl nfsio 54025 27506 0 0 3 0x14200 bored sosplice 2404 415671 93172 0 3 0x82 thrsleep syz-fuzzer 2404 435669 93172 0 3 0x4000082 thrsleep syz-fuzzer 2404 362438 93172 0 3 0x4000082 thrsleep syz-fuzzer 2404 289795 93172 0 3 0x4000082 thrsleep syz-fuzzer 2404 491285 93172 0 3 0x4000082 thrsleep syz-fuzzer 2404 241728 93172 0 3 0x4000082 kqread syz-fuzzer 2404 29237 93172 0 3 0x4000082 thrsleep syz-fuzzer 2404 270745 93172 0 3 0x4000082 thrsleep syz-fuzzer 2404 429497 93172 0 3 0x4000082 thrsleep syz-fuzzer 93172 174960 64617 0 3 0x10008a sigsusp ksh 64617 185813 37570 0 3 0x9a kqread sshd 37570 284322 1 0 3 0x88 kqread sshd 32962 85295 7987 74 3 0x1100092 bpf pflogd 7987 285911 1 0 3 0x80 netio pflogd 36654 362855 30493 73 3 0x1100090 kqread syslogd 30493 484159 1 0 3 0x100082 netio syslogd 98873 191815 1 0 3 0x100080 kqread resolvd 76746 94859 95985 77 3 0x100092 kqread dhcpleased 19778 190954 95985 77 3 0x100092 kqread dhcpleased 95985 57246 1 0 3 0x80 kqread dhcpleased 42357 367259 0 0 3 0x14200 bored smr 41067 364333 0 0 2 0x14200 zerothread 38328 321491 0 0 3 0x14200 aiodoned aiodoned 43001 330799 0 0 3 0x14200 syncer update 60167 205241 0 0 3 0x14200 cleaner cleaner 5102 436175 0 0 3 0x14200 reaper reaper 28401 452328 0 0 3 0x14200 pgdaemon pagedaemon 87500 253269 0 0 3 0x14200 bored viomb 15319 356065 0 0 3 0x40014200 acpi0 acpi0 91560 242988 0 0 7 0x40014200 idle1 65660 515950 0 0 3 0x14200 bored softnet 28159 37477 0 0 3 0x14200 bored softnet 66366 210623 0 0 3 0x14200 bored softnet 55396 424326 0 0 3 0x14200 bored softnet 2693 82346 0 0 3 0x14200 bored systqmp 70930 433111 0 0 3 0x14200 bored systq 8005 365525 0 0 3 0x40014200 bored softclock 7689 386663 0 0 3 0x40014200 idle0 1 469784 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10228 6513K 8369K 78643K 85973 0 pcb 13 22K 30K 78643K 11613 0 rtable 220 13K 13K 78643K 5214 0 ifaddr 98 23K 24K 78643K 1138 0 sysctl 2 0K 2K 78643K 6 0 counters 56 35K 36K 78643K 348 0 ioctlops 0 0K 4K 78643K 3905 0 iov 0 0K 24K 78643K 3381 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1421 89K 89K 78643K 17912 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 84 0 VM map 2 1K 1K 78643K 2 0 sem 10 10K 20K 78643K 28 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 93K 78643K 16822 0 sigio 0 0K 0K 78643K 226 0 proc 83 92K 128K 78643K 2081 0 subproc 104 6K 6K 78643K 624 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 489 0 in_multi 80 5K 6K 78643K 788 0 ether_multi 1 0K 0K 78643K 76 0 mrt 2 0K 0K 78643K 61 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 253 1129K 1129K 78643K 253 0 exec 0 0K 2K 78643K 3074 0 pfkey data 0 0K 0K 78643K 14 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 467 935K 936K 78643K 91956 0 UVM aobj 131 4K 5K 78643K 143 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 381 0 NDP 14 0K 2K 78643K 271 0 temp 154 4758K 70294K 78643K 302514 0 kqueue 14 22K 28K 78643K 2552 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 1432 0 1429 9 8 1 3 0 8 0 rtentry 112 782 0 689 4 1 3 4 0 8 0 unpcb 136 17065 0 17045 109 108 1 8 0 8 0 syncache 296 135 0 135 11 11 0 1 0 8 0 tcpqe 32 278 0 278 8 8 0 2 0 8 0 tcpcb 736 5965 0 5958 176 169 7 15 0 8 6 arp 120 103 0 86 1 0 1 1 0 8 0 inpcb 312 21988 0 21981 253 252 1 17 0 8 0 nd6 48 171 0 150 1 0 1 1 0 8 0 pkpcb 40 119 0 119 12 11 1 1 0 8 1 kcovpl 48 48 0 40 1 0 1 1 0 8 0 ppxss 1248 66 0 66 11 11 0 1 0 8 0 pfstscr 40 3 0 3 1 1 0 1 0 8 0 pffrag 232 48 0 48 5 5 0 1 0 482 0 pffrnode 88 48 0 48 5 5 0 1 0 8 0 pffrent 40 257 0 257 8 8 0 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 516 0 511 1 0 1 1 0 8 0 pftag 88 127 0 127 1 1 0 1 0 8 0 pfqueue 264 2 0 2 1 1 0 1 0 8 0 pfstitem 24 83 0 81 1 0 1 1 0 8 0 pfstkey 112 89 0 87 1 0 1 1 0 8 0 pfstate 336 86 0 84 3 2 1 3 0 8 0 pfrule 1360 170 0 155 3 1 2 2 0 8 0 rttmr 64 14 0 14 4 4 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 3647 0 3284 40 17 23 29 0 8 0 art_table 32 3649 0 3284 5 2 3 4 0 8 0 art_node 16 776 0 697 1 0 1 1 0 8 0 sysvmsgpl 40 56 0 16 2 1 1 1 0 8 0 semupl 112 7 0 7 2 2 0 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 140 0 12 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 22404 0 20920 94 0 94 94 0 8 0 ffsino 272 22404 0 20920 100 0 100 100 0 8 0 nchpl 144 43803 0 42165 63 1 62 63 0 8 0 uvmvnodes 80 7591 0 0 155 0 155 155 0 8 0 vnodes 224 7591 0 0 447 0 447 447 0 8 0 namei 1024 151266 0 151265 13 12 1 2 0 8 0 percpumem 16 186 0 146 1 0 1 1 0 8 0 vcpupl 2048 130 0 0 17 0 17 17 0 8 0 vmpool 560 196 0 66 11 1 10 10 0 8 0 pfiaddrpl 120 134 0 127 1 0 1 1 0 8 0 kstatmem 264 320 0 292 5 2 3 3 0 8 0 scsiplug 72 10 0 10 2 2 0 1 0 8 0 scxspl 216 144169 0 144167 14 13 1 8 0 8 0 plimitpl 152 1206 0 1191 1 0 1 1 0 8 0 sigapl 424 17110 0 17041 10 2 8 8 0 8 0 futexpl 64 182242 0 182236 13 12 1 1 0 8 0 knotepl 120 990 0 0 17 0 17 17 0 8 0 kqueuepl 216 4638 0 4628 45 44 1 5 0 8 0 pipepl 336 6013 0 5984 124 121 3 14 0 8 0 fdescpl 496 17029 0 17000 5 1 4 5 0 8 0 filepl 152 126672 0 126419 208 197 11 24 0 8 0 lockfpl 104 23660 0 23658 45 44 1 4 0 8 0 lockfspl 48 11020 0 11018 5 4 1 2 0 8 0 sessionpl 144 66 0 49 1 0 1 1 0 8 0 pgrppl 48 148 0 131 1 0 1 1 0 8 0 ucredpl 96 12839 0 12826 1 0 1 1 0 8 0 zombiepl 144 17042 0 17041 2 1 1 1 0 8 0 processpl 1064 17110 0 17041 5 0 5 5 0 8 0 procpl 672 42325 0 42240 22 13 9 9 0 8 0 srpgc 96 56 0 56 16 16 0 1 0 8 0 sosppl 168 56 0 56 11 11 0 1 0 8 0 sockpl 480 40610 0 40580 836 831 5 34 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 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 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 562 0 0 34 3 31 34 0 8 0 mtagpl 96 2519 0 0 49 0 49 49 0 8 0 mbufpl 256 2825 0 0 139 0 139 139 0 8 0 bufpl 288 31460 0 24940 543 0 543 543 0 8 19 anonpl 24 3127200 0 3107870 329 204 125 147 0 186 0 amapchunkpl 152 267216 0 266370 140 105 35 48 0 158 0 amappl16 200 42950 0 42298 148 113 35 47 0 8 0 amappl15 192 1552 0 1551 5 4 1 1 0 8 0 amappl14 184 2238 0 2231 2 1 1 1 0 8 0 amappl13 176 1720 0 1715 1 0 1 1 0 8 0 amappl12 168 503 0 502 3 2 1 1 0 8 0 amappl11 160 3692 0 3672 3 2 1 2 0 8 0 amappl10 152 1280 0 1272 1 0 1 1 0 8 0 amappl9 144 1607 0 1605 1 0 1 1 0 8 0 amappl8 136 6227 0 6116 4 0 4 4 0 8 0 amappl7 128 5129 0 5111 1 0 1 1 0 8 0 amappl6 120 1623 0 1601 2 1 1 2 0 8 0 amappl5 112 14468 0 14449 1 0 1 1 0 8 0 amappl4 104 6825 0 6798 2 1 1 2 0 8 0 amappl3 96 49880 0 49826 2 0 2 2 0 8 0 amappl2 88 19789 0 19727 3 1 2 3 0 8 0 amappl1 80 397764 0 397093 31 16 15 20 0 8 0 amappl 88 90287 0 90044 7 1 6 6 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 72 142 0 12 3 0 3 3 0 8 0 uaddrrnd 24 17225 0 17066 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 17225 0 17066 1 0 1 1 0 8 0 vmmpekpl 168 122844 0 122751 5 0 5 5 0 8 0 vmmpepl 168 1628658 0 1625627 330 190 140 151 0 357 0 vmsppl 368 17224 0 17066 16 1 15 15 0 8 0 rwobjpl 56 387265 0 377748 162 27 135 136 0 8 0 pdppl 4096 34457 0 34262 783 584 199 199 0 8 4 pvpl 32 6333932 0 6311174 682 481 201 291 0 265 0 pmappl 248 17224 0 17066 13 2 11 11 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 2350 0 1164 35 0 35 35 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:437 panic(ffffffff825a1ae9) at panic+0x177 sys/kern/subr_prf.c:202 __assert(ffffffff8261472b,ffffffff825fd94c,136,ffffffff825df561) at __assert+0x25 sys/kern/subr_prf.c:161 buf_free_pages(fffffd806a7df810) at buf_free_pages+0x1c2 sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd806a7df810) at buf_dealloc_mem+0xdf sys/kern/vfs_biomem.c:179 buf_put(fffffd806a7df810) at buf_put+0x161 sys/kern/vfs_bio.c:132 bufcache_recover_dmapages(0,20a07) at bufcache_recover_dmapages+0xbb sys/kern/vfs_bio.c:1577 buf_get(0,0,20a06475) at buf_get+0x142 sys/kern/vfs_bio.c:1110 geteblk(20a06475) at geteblk+0x2c sys/kern/vfs_bio.c:1064 readdisklabel(2902,ffffffff81c7a510,ffff800000c5e200,0) at readdisklabel+0x145 sys/arch/amd64/amd64/disksubr.c:96 vndopen(2902,1,2000,ffff80002af2da40) at vndopen+0x17a sys/dev/vnd.c:203 spec_open(ffff8000293e7318) at spec_open+0x3d7 sys/kern/spec_vnops.c:157 VOP_OPEN(fffffd806ed8a688,1,fffffd807f7d7660,ffff80002af2da40) at VOP_OPEN+0x75 sys/kern/vfs_vops.c:138 vn_open(ffff8000293e7568,1,0) at vn_open+0x467 sys/kern/vfs_vnops.c:180 doopenat(ffff80002af2da40,ffffff9c,200013c0,0,0,ffff8000293e7750) at doopenat+0x26a sys/kern/vfs_syscalls.c:1131 syscall(ffff8000293e77c0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000293e77c0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x32f7107a960, count: -17 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020cd8ff0) 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(ffff800020cd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020cd8ff0) 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(ffff800020cd8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -5