panic: Caught invalid memory access at ffff8000018cade0 size 20 op 1 Stopped at db_enter+0x17: popq %rbp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 78938 2675 0 0x10 0x4000000 0 syz-executor db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457 panic(ffffffff84634053) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff8000018cade0,ffff80003bbbf4f0,14) at kasan_memcpy+0x1ec sysvipc_infoout(200000000040,ffff80003bbbfb40,ffff80003bbbf4f0,14,18,68,1ffff00007777e90,dfff908000000000) at sysvipc_infoout+0x1a9 sys/kern/kern_sysctl.c:2713 sysctl_sysvipc(ffff80003bbbfb68,1,200000000040,ffff80003bbbfb40) at sysctl_sysvipc+0x224 sys/kern/kern_sysctl.c:-1 kern_sysctl_dirs(33,ffff80003bbbfb68,1,200000000040,ffff80003bbbfb40,0,1,1ffff00007777ee4) at kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 kern_sysctl(ffff80003bbbfb64,2,200000000040,ffff80003bbbfb40,0,0,ffff80003bbbfdb0) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800029932d18,ffff80003bbbfdb0,ffff80003bbbfd20) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bbbfdb0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bbbfdb0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x170a744e8e0, 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: Caught invalid memory access at ffff8000018cade0 size 20 op 1 ddb{0}> show kasan KASAN: invalid write of 20 bytes at 0xffff8000018cade0 from pc 0xffffffff83484679 KASAN: first bad byte at 0xffff8000018cade0 (+0); shadow 0xfb: malloc redzone (out-of-bounds) KASAN: 0xffff8000018cade0 is 0 bytes inside the 16-byte malloc slot [0xffff8000018cade0..0xffff8000018cadf0) KASAN: allocated at: #0 malloc+0xda0 sys/kern/kern_malloc.c:446 #1 sysvipc_infoout+0x18e sys/kern/kern_sysctl.c:2711 #2 sysctl_sysvipc+0x224 sys/kern/kern_sysctl.c:-1 #3 kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 #4 kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 #5 sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 #6 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #7 Xsyscall+0x128 KASAN: pc: sysvipc_infoout+0x1a9 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 sysvipc_infoout+0x1a9 sys/kern/kern_sysctl.c:2713 #2 sysctl_sysvipc+0x224 sys/kern/kern_sysctl.c:-1 #3 kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 #4 kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 #5 sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 #6 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 #7 Xsyscall+0x128 KASAN: shadow of 0xffff8000018cac80..0xffff8000018caf00 (1 cell = 8 bytes): 0xffff8000018cac80: fc 08 fc 08 fc 08 04 fb fc 08 fc 08 fc 08 fc 08 0xffff8000018cad00: fc 08 fc 08 fc 08 08 fb 08 fb fc 08 fc 08 fc 08 >0xffff8000018cad80: fc 08 fc 08 04 fb fc 08 fc 08 fc 08[fb]08 08 08 0xffff8000018cae00: 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 0xffff8000018cae80: 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 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(ffffffff84634053) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff8000018cade0,ffff80003bbbf4f0,14) at kasan_memcpy+0x1ec sysvipc_infoout(200000000040,ffff80003bbbfb40,ffff80003bbbf4f0,14,18,68,1ffff00007777e90,dfff908000000000) at sysvipc_infoout+0x1a9 sys/kern/kern_sysctl.c:2713 sysctl_sysvipc(ffff80003bbbfb68,1,200000000040,ffff80003bbbfb40) at sysctl_sysvipc+0x224 sys/kern/kern_sysctl.c:-1 kern_sysctl_dirs(33,ffff80003bbbfb68,1,200000000040,ffff80003bbbfb40,0,1,1ffff00007777ee4) at kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 kern_sysctl(ffff80003bbbfb64,2,200000000040,ffff80003bbbfb40,0,0,ffff80003bbbfdb0) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800029932d18,ffff80003bbbfdb0,ffff80003bbbfd20) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bbbfdb0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bbbfdb0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x170a744e8e0, count: -10 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003bbbf230 rbx 0xffff80003bbbf2a0 rdx 0 rcx 0xffffffff850aeff0 cpu_info_full_primary+0x1ff0 rax 0xffff800000172080 r8 0x101010101010101 r9 0x8080808080808080 r10 0xffff80003bbbf018 r11 0xffffffff8263c7e0 x86_bus_space_io_read_1 r12 0xffffffff84634053 .str.5+0x9c553 r13 0xffffffff850afc08 cpu_info_full_primary+0x2c08 r14 0xffffffff850afe07 cpu_info_full_primary+0x2e07 r15 0x1 rip 0xffffffff81fd2ec7 db_enter+0x17 cs 0x8 rflags 0x246 rsp 0xffff80003bbbf230 ss 0x10 db_enter+0x17: popq %rbp ddb{0}> show proc PROC (syz-executor) tid=78938 pid=2675 tcnt=3 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=78, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800029932020,0xffff800029a3ad40 process=0xffff800045ff0020 user=0xffff80003bbb4000, vmspace=0xffff800001c403e8 estcpu=28, cpticks=18, pctcpu=0.14, user=0, sys=18, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 16963 449543 12713 0 2 0 0 syz-executor 16963 325172 12713 0 3 0 0x4000080 fsleep syz-executor 49927 165734 64483 0 2 0x10 0 syz-executor 49927 300378 64483 0 3 0x10 0x4000080 fsleep syz-executor 4427 375916 5545 0 2 0 0 syz-executor 4427 149360 5545 0 3 0 0x4000080 fsleep syz-executor 90205 423311 77185 0 2 0x4000000 0 syz-executor 90205 233044 77185 0 3 0x4000000 0x4000080 fsleep syz-executor 2675 168289 16720 0 2 0x10 0 syz-executor 2675 331476 16720 0 3 0x10 0x4000080 kqsel syz-executor * 2675 78938 16720 0 7 0x10 0x4000000 syz-executor 28901 486804 88764 0 2 0 0xc80 syz-executor 28901 362768 88764 0 3 0 0x4000080 fifor syz-executor 28901 392763 88764 0 3 0 0x4000080 fsleep syz-executor 74509 174807 52691 0 2 0x1 0 syz-executor 74509 94771 52691 0 3 0x1 0x4000080 fsleep syz-executor 67510 225174 37011 -1 2 0x10 0 syz-executor 67510 71477 37011 -1 3 0x10 0x4000080 fsleep syz-executor 16720 516299 73889 0 2 0x2 0xc80 syz-executor 5545 143663 73889 0 2 0x2 0xc80 syz-executor 37011 357750 73889 0 2 0x2 0xc80 syz-executor 77185 14834 73889 0 2 0x2 0xc80 syz-executor 52691 393243 73889 0 2 0x2 0xc80 syz-executor 12713 309898 73889 0 2 0x2 0xc80 syz-executor 88764 140780 73889 0 2 0x2 0xc80 syz-executor 64483 388943 73889 0 2 0x2 0xc80 syz-executor 73889 89513 31715 0 3 0x2 0x80 kqread syz-executor 31715 335397 61468 0 3 0x100002 0x88 sigsusp ksh 61468 511488 64757 0 3 0x10 0x88 kqread sshd-session 64757 347957 37811 0 3 0x12 0x80 kqread sshd-session 37811 127292 1 0 3 0 0x88 kqread sshd 73031 400538 62062 74 3 0x1100012 0x80 bpf pflogd 62062 375028 1 0 3 0 0x80 sbwait pflogd 79803 36433 72713 73 2 0x1100010 0x80 syslogd 72713 12981 1 0 3 0x100002 0x80 sbwait syslogd 55107 502808 1 0 3 0x100000 0x80 kqread resolvd 66748 408338 4231 77 3 0x100012 0x80 kqread dhcpleased 67397 44046 4231 77 3 0x100012 0x80 kqread dhcpleased 4231 289503 1 0 3 0 0x80 kqread dhcpleased 17818 421262 0 0 3 0x14000 0x200 bored smr 8736 4301 0 0 2 0x14000 0x200 zerothread 88770 84781 0 0 3 0x14000 0x200 aiodoned aiodoned 29794 23845 0 0 3 0x14000 0x200 syncer update 3646 341676 0 0 3 0x14000 0x200 cleaner cleaner 97346 277523 0 0 3 0x14000 0x200 reaper reaper 58936 178688 0 0 3 0x14000 0x200 pgdaemon pagedaemon 7172 105412 0 0 3 0x14000 0x200 bored viomb 63804 152773 0 0 3 0x14000 0x40000200 acpi0 acpi0 1506 209615 0 0 7 0x14000 0x40000200 idle1 73301 505716 0 0 3 0x14000 0x200 bored softnet1 72511 347731 0 0 3 0x14000 0x200 bored softnet0 36320 125893 0 0 3 0x14000 0x200 bored systqmp 55649 231150 0 0 3 0x14000 0x200 bored systq 98112 95140 0 0 3 0x14000 0x200 tmoslp softclockmp 29617 312065 0 0 2 0x14000 0x40000200 softclock 38919 344712 0 0 3 0x14000 0x40000200 idle0 1 501542 0 0 2 0x2 0 init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks Process 1 (init) thread 0xffff800045fffc88 (501542) exclusive rrwlock inode r = 0 (0xffff800000d970a0) #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 uvn_io+0x579 sys/uvm/uvm_vnode.c:1226 #6 uvn_get+0x494 sys/uvm/uvm_vnode.c:1075 #7 uvm_fault_lower_io+0x5cd sys/uvm/uvm_fault.c:1612 #8 uvm_fault_lower+0x34e sys/uvm/uvm_fault.c:1381 #9 uvm_fault+0x3ef sys/uvm/uvm_fault.c:657 #10 upageflttrap+0xe0 sys/arch/amd64/amd64/trap.c:192 #11 usertrap+0x4f9 sys/arch/amd64/amd64/trap.c:640 #12 recall_trap+0x8 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11057 12243K 12406K 166960K 12355 0 pcb 18 24K 24K 166960K 46 0 rtable 211 11K 13K 166960K 415 0 pf 33 22K 32794K 166960K 64 0 ifaddr 38 11K 13K 166960K 59 0 ifgroup 51 2K 2K 166960K 75 0 sysctl 2 1K 13K 166960K 8 0 counters 68 42K 43K 166960K 82 0 ioctlops 0 0K 4K 166960K 1526 0 iov 0 0K 12K 166960K 9 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1305 84K 84K 166960K 1565 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 10K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 1K 166960K 12 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 292K 166960K 11964 0 file desc 18 65K 97K 166960K 335 0 sigio 0 0K 0K 166960K 6 0 proc 63 112K 177K 166960K 635 0 subproc 72 9K 9K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 0K 166960K 3 0 in_multi 87 6K 7K 166960K 121 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 10 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 61 425K 425K 166960K 61 0 exec 0 0K 2K 166960K 411 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 229 224K 252K 166960K 4758 0 UVM aobj 15 4K 4K 166960K 16 0 pinsyscall 1065 1793K 1795K 166960K 1543 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 1 0 NDP 13 0K 2K 166960K 38 0 temp 74 9171K 9183K 166960K 4608 0 kqueue 14 44K 69K 166960K 65 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 39 0 36 1 0 1 1 0 8 0 rtentry 176 135 0 38 6 0 6 6 0 8 0 unpcb 144 226 0 199 3 1 2 2 0 8 1 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 736 41 0 36 2 0 2 2 0 8 1 arp 136 22 0 8 1 0 1 1 0 8 0 inpcb 328 202 0 189 3 1 2 2 0 8 0 nd6 152 32 0 9 2 0 2 2 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1192 2 0 2 1 0 1 1 0 8 1 pffrag 232 4 0 1 1 0 1 1 0 482 0 pffrnode 88 3 0 1 1 0 1 1 0 8 0 pffrent 40 5 0 2 1 0 1 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 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 69 0 32 1 0 1 1 0 8 0 pfstkey 128 69 0 32 2 0 2 2 0 8 0 pfstate 448 69 0 32 7 0 7 7 0 8 2 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 256 547 0 136 30 1 29 29 0 8 1 art_table 40 548 0 136 5 0 5 5 0 8 0 art_node 32 135 0 47 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semapl 72 9 0 0 1 0 1 1 0 8 0 shmpl 112 13 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1916 0 438 93 0 93 93 0 8 0 ffsino 296 1916 0 438 114 0 114 114 0 8 0 nchpl 144 2366 0 653 64 0 64 64 0 8 0 vnodes 216 2103 0 0 117 0 117 117 0 8 0 namei 1024 7846 0 7846 3 2 1 2 0 8 1 percpumem 16 57 0 7 1 0 1 1 0 8 0 kstatmem 264 39 0 14 2 0 2 2 0 8 0 scxspl 216 7944 0 7944 4 3 1 3 1 8 1 plimitpl 152 40 0 24 1 0 1 1 0 8 0 sigapl 424 648 0 601 8 2 6 7 0 8 0 knotepl 120 153 0 0 5 0 5 5 0 8 0 kqueuepl 224 81 0 67 2 1 1 2 0 8 0 pipepl 344 168 0 141 3 0 3 3 0 8 0 fdescpl 528 632 0 601 3 0 3 3 0 8 0 filepl 160 3033 0 2791 20 7 13 17 0 8 2 lockfpl 104 283 0 281 3 2 1 3 0 8 0 lockfspl 48 35 0 33 1 0 1 1 0 8 0 sessionpl 144 34 0 25 1 0 1 1 0 8 0 pgrppl 48 45 0 28 1 0 1 1 0 8 0 ucredpl 104 555 0 537 1 0 1 1 0 8 0 zombiepl 144 601 0 601 2 1 1 1 0 8 1 processpl 1232 648 0 601 5 0 5 5 0 8 1 procpl 664 925 0 868 8 2 6 6 0 8 1 sockpl 752 468 0 425 8 1 7 7 0 8 2 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k128 9344 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mextrefs 64 18 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 166 0 0 11 0 11 11 0 8 0 bufpl 272 2577 0 105 165 0 165 165 0 8 0 anonpl 32 5655 0 0 46 0 46 46 0 222 0 amapchunkpl 152 13936 0 13456 27 6 21 26 0 158 1 amappl16 200 2126 0 2094 5 2 3 5 0 8 0 amappl15 192 11 0 10 1 0 1 1 0 8 0 amappl14 184 454 0 453 1 0 1 1 0 8 0 amappl13 176 133 0 122 1 0 1 1 0 8 0 amappl12 168 939 0 909 2 0 2 2 0 8 0 amappl11 160 10 0 10 3 2 1 1 0 8 1 amappl10 152 66 0 51 1 0 1 1 0 8 0 amappl9 144 274 0 274 1 1 0 1 0 8 0 amappl8 136 107 0 105 1 0 1 1 0 8 0 amappl7 128 159 0 147 1 0 1 1 0 8 0 amappl6 120 205 0 203 1 0 1 1 0 8 0 amappl5 112 101 0 90 1 0 1 1 0 8 0 amappl4 104 306 0 287 1 0 1 1 0 8 0 amappl3 96 2716 0 2602 4 0 4 4 0 8 0 amappl2 88 556 0 496 2 0 2 2 0 8 0 amappl1 80 11418 0 10836 15 2 13 15 0 8 0 amappl 88 3965 0 3802 5 0 5 5 0 92 0 uvmvnodes 80 105 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 15 0 1 1 0 1 1 0 8 0 uaddrrnd 24 632 0 601 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 632 0 601 1 0 1 1 0 8 0 vmmpekpl 168 7203 0 7166 3 0 3 3 0 8 0 vmmpepl 168 49185 0 47285 90 2 88 88 0 357 2 vmsppl 488 631 0 601 6 1 5 5 0 8 0 rwobjpl 80 17119 0 16105 24 0 24 24 0 8 0 pdppl 4096 1273 0 1202 105 30 75 89 0 8 4 pvpl 32 13188 0 0 109 2 107 107 0 265 0 pmappl 256 631 0 601 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 120 451 0 38 13 0 13 13 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(ffffffff84634053) at panic+0x270 sys/kern/subr_prf.c:198 kasan_memcpy(ffff8000018cade0,ffff80003bbbf4f0,14) at kasan_memcpy+0x1ec sysvipc_infoout(200000000040,ffff80003bbbfb40,ffff80003bbbf4f0,14,18,68,1ffff00007777e90,dfff908000000000) at sysvipc_infoout+0x1a9 sys/kern/kern_sysctl.c:2713 sysctl_sysvipc(ffff80003bbbfb68,1,200000000040,ffff80003bbbfb40) at sysctl_sysvipc+0x224 sys/kern/kern_sysctl.c:-1 kern_sysctl_dirs(33,ffff80003bbbfb68,1,200000000040,ffff80003bbbfb40,0,1,1ffff00007777ee4) at kern_sysctl_dirs+0x30f sys/kern/kern_sysctl.c:429 kern_sysctl(ffff80003bbbfb64,2,200000000040,ffff80003bbbfb40,0,0,ffff80003bbbfdb0) at kern_sysctl+0x1ce sys/kern/kern_sysctl.c:529 sys_sysctl(ffff800029932d18,ffff80003bbbfdb0,ffff80003bbbfd20) at sys_sysctl+0x54f sys/kern/kern_sysctl.c:309 syscall(ffff80003bbbfdb0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bbbfdb0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x170a744e8e0, count: -10 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x19: leave x86_ipi_db(ffff800028fe3ff0) 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(ffff800028fe3ff0) at sched_idle+0x566 sys/kern/kern_sched.c:204 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800028fe3ff0) 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(ffff800028fe3ff0) at sched_idle+0x566 sys/kern/kern_sched.c:204 end trace frame: 0x0, count: -5