panic: Caught invalid memory access at ffff800001e8a3b0 size 104 op 1 Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND *424402 32930 0 0 0x4000000 0K syz-executor db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff846367f9) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff800001e8a3b0,ffff800001d664e8,68) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003bb7ba88,1,200000000040,ffff80003bb7ba60) at sysctl_sysvipc+0x746 sys/kern/kern_sysctl.c:2781 kern_sysctl_dirs(33,ffff80003bb7ba88,1,200000000040,ffff80003bb7ba60,0,1,1ffff0000776f6c8) at kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 kern_sysctl(ffff80003bb7ba84,2,200000000040,ffff80003bb7ba60,0,0,ffff80003bb7bce0) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800035b02028,ffff80003bb7bce0,ffff80003bb7bc40) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bb7bce0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb7bce0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x18d622ce7c0, 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: Caught invalid memory access at ffff800001e8a3b0 size 104 op 1 ddb{0}> show kasan KASAN: invalid write of 104 bytes at 0xffff800001e8a3b0 from pc 0xffffffff82cb68b6 KASAN: first bad byte at 0xffff800001e8a414 (+100); shadow 0x04: partial granule (out-of-bounds) KASAN: 0xffff800001e8a414 is 13332 bytes inside the 16384-byte malloc slot [0xffff800001e87000..0xffff800001e8b000) KASAN: allocated at: #0 malloc+0xda0 sys/kern/kern_malloc.c:446 #1 sysctl_sysvipc+0x619 sys/kern/kern_sysctl.c:2766 #2 kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 #3 kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 #4 sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 #5 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 KASAN: pc: sysctl_sysvipc+0x746 KASAN: call trace: #0 kasan_memcpy+0x1ca kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline] #0 kasan_memcpy+0x1ca sys/kern/subr_kasan.c:1025 #1 sysctl_sysvipc+0x746 sys/kern/kern_sysctl.c:2781 #2 kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 #3 kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 #4 sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 #5 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 KASAN: shadow of 0xffff800001e8a300..0xffff800001e8a580 (1 cell = 8 bytes): 0xffff800001e8a300: 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 0xffff800001e8a380: 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 >0xffff800001e8a400: 08 08[04]fb fe fe fe fe fe fe fe fe fe fe fe fe 0xffff800001e8a480: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe 0xffff800001e8a500: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe KASAN: legend: 00 valid; 01..07 partial; fb malloc redzone; fc malloc freed; fd pool freed; fe kmem; fa global; f1..f4/f8 stack/scope ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff846367f9) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff800001e8a3b0,ffff800001d664e8,68) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003bb7ba88,1,200000000040,ffff80003bb7ba60) at sysctl_sysvipc+0x746 sys/kern/kern_sysctl.c:2781 kern_sysctl_dirs(33,ffff80003bb7ba88,1,200000000040,ffff80003bb7ba60,0,1,1ffff0000776f6c8) at kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 kern_sysctl(ffff80003bb7ba84,2,200000000040,ffff80003bb7ba60,0,0,ffff80003bb7bce0) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800035b02028,ffff80003bb7bce0,ffff80003bb7bc40) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bb7bce0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb7bce0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x18d622ce7c0, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003bb7b1d0 rbx 0xffff80003bb7b240 rdx 0 rcx 0xffffffff84f17ff0 cpu_info_full_primary+0x1ff0 rax 0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xffff80003bb7afb8 r11 0xffffffff81565e60 x86_bus_space_io_read_1 r12 0xffffffff846367f9 .str.4+0x9df59 r13 0xffffffff84f18c08 cpu_info_full_primary+0x2c08 r14 0xffffffff84f18e07 cpu_info_full_primary+0x2e07 r15 0x1 rip 0xffffffff823f2eb7 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff80003bb7b1d0 ss 0x10 db_enter+0x17: popq %rbp ddb{0}> show proc PROC (syz-executor) tid=424402 pid=32930 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800035b022c0,0xffff800035b03cc0 process=0xffff800035b05830 user=0xffff80003bb70000, vmspace=0xffff800000d8a000 estcpu=36, cpticks=17, pctcpu=0.0, user=0, sys=17, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 56228 356694 28302 0 2 0x10 syz-executor 56228 223543 28302 0 3 0x4000090 fsleep syz-executor 16018 35144 68970 0 2 0 syz-executor 16018 72351 68970 0 3 0x4000080 fsleep syz-executor 17943 113796 36937 0 2 0 syz-executor 17943 19919 36937 0 3 0x4000080 fsleep syz-executor 17943 462619 36937 0 3 0x4000080 fsleep syz-executor 32930 91301 64329 0 2 0 syz-executor *32930 424402 64329 0 7 0x4000000 syz-executor 32930 165678 64329 0 3 0x4000080 fsleep syz-executor 55260 442879 1 0 3 0x100083 ttyin getty 28302 147430 70499 0 2 0xc82 syz-executor 43655 209367 70499 0 3 0x82 wait syz-executor 64329 184886 70499 0 2 0xc82 syz-executor 68970 298504 70499 0 2 0xc82 syz-executor 98814 411974 70499 0 3 0x82 wait syz-executor 36937 283079 70499 0 2 0x20000c82 syz-executor 30889 233472 70499 0 2 0x2 syz-executor 54590 509157 70499 0 3 0x82 wait syz-executor 70499 241923 91557 0 3 0x10000082 kqread syz-executor 91557 16657 18107 0 3 0x10008a sigsusp ksh 18107 353252 79168 0 3 0x98 kqread sshd-session 79168 312128 45086 0 3 0x92 kqread sshd-session 45086 44698 1 0 3 0x88 kqread sshd 42885 292675 70301 74 3 0x1100092 bpf pflogd 70301 392187 1 0 3 0x80 sbwait pflogd 68830 366658 12125 73 2 0x1100090 syslogd 12125 284219 1 0 3 0x100082 sbwait syslogd 86666 79627 1 0 3 0x100080 kqread resolvd 47147 114502 71203 77 3 0x100092 kqread dhcpleased 18806 488663 71203 77 3 0x100092 kqread dhcpleased 71203 197108 1 0 3 0x80 kqread dhcpleased 23181 438791 0 0 2 0x14200 smr 62308 448249 0 0 2 0x14200 zerothread 11619 68038 0 0 3 0x14200 aiodoned aiodoned 4594 73901 0 0 3 0x14200 syncer update 47910 276650 0 0 3 0x14200 cleaner cleaner 88701 276135 0 0 3 0x14200 reaper reaper 23863 6772 0 0 3 0x14200 pgdaemon pagedaemon 892 177534 0 0 3 0x14200 bored viomb 33705 238240 0 0 3 0x40014200 acpi0 acpi0 48890 80719 0 0 7 0x40014200 idle1 11032 35633 0 0 3 0x14200 bored softnet1 86937 35206 0 0 3 0x14200 bored softnet0 57359 369033 0 0 3 0x14200 bored systqmp 64749 466568 0 0 3 0x14200 bored systq 55559 283421 0 0 2 0x14200 softclockmp 30475 41583 0 0 3 0x40014200 tmoslp softclock 7652 405376 0 0 3 0x40014200 idle0 1 360240 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 32930 (syz-executor) thread 0xffff800035b02028 (424402) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff85e461c0) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 sysctl_sysvipc+0x672 sys/kern/kern_sysctl.c:-1 #2 kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 #3 kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 #4 sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 #5 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 Process 30889 (syz-executor) thread 0xffff800029922a70 (233472) exclusive rrwlock inode r = 0 (0xffff800001d1db60) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xf0 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0x17e sys/kern/vfs_vops.c:527 #4 vn_lock+0xca sys/kern/vfs_vnops.c:576 #5 vget+0x321 sys/kern/vfs_subr.c:694 #6 ufs_ihashget+0x233 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x10b sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1529 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0xda sys/kern/vfs_vops.c:85 #10 vfs_lookup+0xfbd sys/kern/vfs_lookup.c:580 #11 namei+0xe19 sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x102 sys/kern/vfs_syscalls.c:1807 #13 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xffff800001b807d0) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xf0 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0x17e sys/kern/vfs_vops.c:527 #4 vn_lock+0xca sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x1f7 sys/kern/vfs_lookup.c:431 #6 namei+0xe19 sys/kern/vfs_lookup.c:250 #7 dounlinkat+0x102 sys/kern/vfs_syscalls.c:1807 #8 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11083 12536K 12536K 166960K 12490 0 pcb 18 28K 30K 166960K 63 0 rtable 241 12K 13K 166960K 355 0 pf 37 23K 39K 166960K 61 0 ifaddr 44 12K 13K 166960K 53 0 ifgroup 60 2K 2K 166960K 76 0 sysctl 1 1K 13K 166960K 6 0 counters 72 43K 44K 166960K 82 0 ioctlops 0 0K 4K 166960K 1527 0 iov 0 0K 12K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1392 89K 89K 166960K 1746 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 10K 166960K 25 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 24 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 292K 166960K 11964 0 file desc 17 61K 89K 166960K 450 0 sigio 0 0K 0K 166960K 5 0 proc 71 128K 177K 166960K 597 0 subproc 72 9K 9K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 0K 166960K 6 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 17 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 97 668K 668K 166960K 97 0 exec 0 0K 2K 166960K 405 0 fusefs mount 1 36K 36K 166960K 1 0 tdb 3 1K 1K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 227 220K 239K 166960K 5876 0 UVM aobj 131 6K 6K 166960K 132 0 pinsyscall 1066 1855K 1857K 166960K 1610 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 13 0K 2K 166960K 34 0 temp 43 9187K 9191K 166960K 11475 0 kqueue 14 44K 57K 166960K 78 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 28 0 0 1 0 1 1 0 8 0 rtpcb 120 33 0 30 1 0 1 1 0 8 0 rtentry 176 113 0 1 6 0 6 6 0 8 0 unpcb 144 575 0 558 9 3 6 6 0 8 5 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 37 0 33 1 0 1 1 0 8 0 arp 136 19 0 0 1 0 1 1 0 8 0 inpcb 328 277 0 268 7 5 2 6 0 8 1 nd6 152 25 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 2 0 2 1 0 1 1 0 8 1 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 4 0 1 1 0 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfstitem 24 43 0 3 1 0 1 1 0 8 0 pfstkey 128 43 0 3 2 0 2 2 0 8 0 pfstate 448 43 0 3 5 0 5 5 0 8 0 pfrule 1360 23 0 18 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 465 0 0 30 0 30 30 0 8 0 art_table 40 466 0 0 5 0 5 5 0 8 0 art_node 32 113 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 3 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 72 21 0 11 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2156 0 684 93 0 93 93 0 8 0 ffsino 296 2156 0 684 114 0 114 114 0 8 0 nchpl 144 2844 0 1142 64 0 64 64 0 8 0 vnodes 216 2503 0 0 140 0 140 140 0 8 0 namei 1024 9915 0 9915 3 2 1 2 0 8 1 percpumem 16 57 0 5 1 0 1 1 0 8 0 kstatmem 264 39 0 10 3 0 3 3 0 8 1 scxspl 216 9976 0 9976 5 4 1 3 1 8 1 plimitpl 152 58 0 37 1 0 1 1 0 8 0 sigapl 424 768 0 721 7 1 6 7 0 8 0 knotepl 120 103 0 0 4 0 4 4 0 8 0 kqueuepl 224 119 0 109 1 0 1 1 0 8 0 pipepl 344 171 0 144 3 0 3 3 0 8 0 fdescpl 528 752 0 721 3 0 3 3 0 8 0 filepl 160 4427 0 4197 23 4 19 19 0 8 7 lockfpl 104 275 0 273 2 0 2 2 0 8 1 lockfspl 48 98 0 96 1 0 1 1 0 8 0 sessionpl 144 106 0 97 1 0 1 1 0 8 0 pgrppl 48 119 0 102 1 0 1 1 0 8 0 ucredpl 104 703 0 689 1 0 1 1 0 8 0 zombiepl 144 724 0 721 1 0 1 1 0 8 0 processpl 1232 768 0 721 5 0 5 5 0 8 0 procpl 664 1295 0 1242 7 1 6 6 0 8 0 sosppl 176 6 0 6 3 2 1 1 0 8 1 sockpl 752 894 0 865 33 21 12 23 0 8 8 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k128 9344 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 121 0 0 16 0 16 16 0 8 1 mcl2k 2048 20 0 0 3 0 3 3 0 8 0 mextrefs 64 17 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 207 0 0 13 0 13 13 0 8 0 bufpl 272 3273 0 106 212 0 212 212 0 8 0 anonpl 32 8381 0 0 68 0 68 68 0 222 0 amapchunkpl 152 18031 0 17562 28 1 27 27 0 158 5 amappl16 200 2353 0 2324 19 8 11 15 0 8 8 amappl15 192 10 0 9 2 1 1 1 0 8 0 amappl14 184 433 0 432 1 0 1 1 0 8 0 amappl13 176 123 0 111 1 0 1 1 0 8 0 amappl12 168 1024 0 994 2 0 2 2 0 8 0 amappl11 160 78 0 78 3 2 1 1 0 8 1 amappl10 152 64 0 50 1 0 1 1 0 8 0 amappl9 144 304 0 303 1 0 1 1 0 8 0 amappl8 136 100 0 98 1 0 1 1 0 8 0 amappl7 128 163 0 149 1 0 1 1 0 8 0 amappl6 120 156 0 155 1 0 1 1 0 8 0 amappl5 112 100 0 89 1 0 1 1 0 8 0 amappl4 104 305 0 284 1 0 1 1 0 8 0 amappl3 96 3616 0 3504 4 0 4 4 0 8 0 amappl2 88 551 0 488 2 0 2 2 0 8 0 amappl1 80 11720 0 11118 15 2 13 15 0 8 0 amappl 88 5093 0 4935 5 0 5 5 0 92 0 uvmvnodes 80 107 0 0 3 0 3 3 0 8 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 72 131 0 1 3 0 3 3 0 8 0 uaddrrnd 24 752 0 721 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 752 0 721 1 0 1 1 0 8 0 vmmpekpl 168 8066 0 8031 2 0 2 2 0 8 0 vmmpepl 168 55905 0 53995 98 2 96 96 0 357 8 vmsppl 488 751 0 721 5 1 4 5 0 8 0 rwobjpl 80 18547 0 17379 30 1 29 29 0 8 4 pdppl 4096 1513 0 1442 95 22 73 85 0 8 2 pvpl 32 14465 0 0 118 1 117 117 0 265 0 pmappl 256 751 0 721 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 120 488 0 29 14 0 14 14 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff846367f9) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff800001e8a3b0,ffff800001d664e8,68) at kasan_memcpy+0x1ec sysctl_sysvipc(ffff80003bb7ba88,1,200000000040,ffff80003bb7ba60) at sysctl_sysvipc+0x746 sys/kern/kern_sysctl.c:2781 kern_sysctl_dirs(33,ffff80003bb7ba88,1,200000000040,ffff80003bb7ba60,0,1,1ffff0000776f6c8) at kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 kern_sysctl(ffff80003bb7ba84,2,200000000040,ffff80003bb7ba60,0,0,ffff80003bb7bce0) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800035b02028,ffff80003bb7bce0,ffff80003bb7bc40) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bb7bce0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bb7bce0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x18d622ce7c0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x19: leave x86_ipi_db(ffff800028ff3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x63c sys/dev/acpi/acpicpu_x86.c:-1 sched_idle(ffff800028ff3ff0) at sched_idle+0x566 sys/kern/kern_sched.c:204 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800028ff3ff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412 x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x63c sys/dev/acpi/acpicpu_x86.c:-1 sched_idle(ffff800028ff3ff0) at sched_idle+0x566 sys/kern/kern_sched.c:204 end trace frame: 0x0, count: -5