uvm_fault(0xfffffd800b0fb1f8, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND dt_ioctl_record_stop(ffff800001492000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff800031008020) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff800031008020) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a315480) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80794be530,81,fffffd80097fb680,ffff800031008020) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8068b46048,ffff800031008020) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8068b46048,ffff800031008020) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8068b46048,ffff800031008020) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8068b46048,ffff800031008020) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800031008020) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800031008020,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800031008020,ffff80002a3157f0,ffff80002a315740) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3157f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3157f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7204c3b81240, count: 3 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(0xfffffd800b0fb1f8, 0x0, 0, 1) -> e ddb{0}> trace dt_ioctl_record_stop(ffff800001492000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff800031008020) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff800031008020) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a315480) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80794be530,81,fffffd80097fb680,ffff800031008020) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8068b46048,ffff800031008020) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8068b46048,ffff800031008020) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8068b46048,ffff800031008020) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8068b46048,ffff800031008020) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800031008020) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800031008020,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800031008020,ffff80002a3157f0,ffff80002a315740) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3157f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3157f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7204c3b81240, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a3153b0 rbx 0x1 rdx 0 rcx 0xffff800031008020 rax 0xffffffff83833028 dt_prov_syscall r8 0xffffffffffffffff r9 0 r10 0xd45031761af1d850 r11 0x7ed2e72a7d862376 r12 0 r13 0 r14 0 r15 0xffff80000148db00 rip 0xffffffff826259b8 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80002a315380 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{0}> show proc PROC (syz-executor) tid=501152 pid=71509 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800031008020 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000ffff2540,0xffffffff839a85d0 process=0xffff80003c492b78 user=0xffff80002a310000, vmspace=0xfffffd800b0fb1f8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 34550 165968 20437 0 2 0 syz-executor 34550 302385 20437 0 3 0x4000080 fsleep syz-executor 40444 493157 12045 0 2 0 syz-executor 40444 505066 12045 0 3 0x4000080 fsleep syz-executor 14383 25586 882 0 2 0 syz-executor 14383 478009 882 0 3 0x4000080 fsleep syz-executor 20873 241943 44808 -1 2 0x10 syz-executor 20873 35382 44808 -1 3 0x4000090 fsleep syz-executor 20873 298786 44808 -1 3 0x4000090 fsleep syz-executor 22110 15372 64328 0 3 0x80 nanoslp syz-executor 22110 297113 64328 0 3 0x4000080 pipewr syz-executor 22110 270010 64328 0 3 0x4000080 fsleep syz-executor 44808 362672 66135 0 3 0x82 nanoslp syz-executor 89168 503358 66135 0 2 0x2 syz-executor 20437 270812 66135 0 3 0x82 nanoslp syz-executor 80121 260453 1 0 3 0x100083 ttyin getty 64328 20978 66135 0 3 0x82 nanoslp syz-executor 73916 58331 66135 0 3 0x82 nanoslp syz-executor 61521 192144 0 0 3 0x14200 bored sosplice 12045 319107 66135 0 3 0x82 nanoslp syz-executor 4817 1610 66135 0 2 0x2 syz-executor 882 141582 66135 0 3 0x82 nanoslp syz-executor 66135 124104 10418 0 2 0x2 syz-executor 10418 287170 90413 0 3 0x10008a sigsusp ksh 90413 163694 61946 0 3 0x98 kqread sshd-session 61946 391329 53552 0 3 0x92 kqread sshd-session 53552 153969 1 0 3 0x88 kqread sshd 39406 266380 76351 74 3 0x1100092 bpf pflogd 76351 29709 1 0 3 0x80 sbwait pflogd 57864 441549 99053 73 3 0x1100090 kqread syslogd 99053 132837 1 0 3 0x100082 sbwait syslogd 19310 141886 1 0 3 0x100080 kqread resolvd 93128 456647 65816 77 3 0x100092 kqread dhcpleased 62044 428997 65816 77 3 0x100092 kqread dhcpleased 65816 145622 1 0 3 0x80 kqread dhcpleased 21361 399420 0 0 3 0x14200 bored smr 94213 57438 0 0 2 0x14200 zerothread 16450 234856 0 0 3 0x14200 aiodoned aiodoned 6123 332672 0 0 3 0x14200 syncer update 6215 471523 0 0 3 0x14200 cleaner cleaner 29556 461813 0 0 3 0x14200 reaper reaper 62879 210762 0 0 3 0x14200 pgdaemon pagedaemon 50738 434729 0 0 3 0x14200 bored viomb 65636 114807 0 0 3 0x40014200 acpi0 acpi0 55877 501167 0 0 7 0x40014200 idle1 80849 431080 0 0 3 0x14200 bored softnet7 50780 31619 0 0 3 0x14200 bored softnet6 37253 105565 0 0 3 0x14200 bored softnet5 91695 59076 0 0 3 0x14200 bored softnet4 40954 324662 0 0 3 0x14200 bored softnet3 35629 164047 0 0 3 0x14200 bored softnet2 69615 81398 0 0 3 0x14200 bored softnet1 47487 44981 0 0 2 0x14200 softnet0 62398 192733 0 0 3 0x14200 bored systqmp 424 381507 0 0 3 0x14200 bored systq 48876 321119 0 0 3 0x14200 tmoslp softclockmp 88318 235642 0 0 3 0x40014200 tmoslp softclock 92064 211237 0 0 3 0x40014200 idle0 1 388938 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 4817 (syz-executor) thread 0xffff8000ffff3c98 (1610) exclusive rrwlock inode r = 0 (0xfffffd806e111a48) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:693 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ce891f8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10260 11087K 11689K 166960K 13117 0 pcb 19 14K 16K 166960K 751 0 rtable 245 12K 12K 166960K 726 0 pf 38 18K 81K 166960K 329 0 ifaddr 48 9K 9K 166960K 189 0 ifgroup 63 2K 3K 166960K 321 0 sysctl 4 1K 9K 166960K 20 0 counters 72 37K 38K 166960K 542 0 ioctlops 0 0K 4K 166960K 2120 0 iov 0 0K 24K 166960K 209 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1494 94K 94K 166960K 3471 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 32 0 VM map 2 1K 1K 166960K 2 0 sem 28 11K 11K 166960K 92 0 dirhash 12 2K 2K 166960K 66 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 110K 166960K 2431 0 sigio 0 0K 0K 166960K 51 0 proc 74 131K 164K 166960K 971 0 subproc 72 4K 4K 166960K 135 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 712 0 in_multi 105 7K 7K 166960K 284 0 ether_multi 1 0K 0K 166960K 19 0 mrt 1 0K 0K 166960K 16 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 910 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 12 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 235 167K 197K 166960K 23116 0 UVM aobj 40 3K 3K 166960K 42 0 pinsyscall 41 82K 104K 166960K 3729 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 175 0 NDP 14 0K 2K 166960K 134 0 temp 82 8656K 8784K 166960K 114659 0 kqueue 14 22K 38K 166960K 555 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 244 0 240 2 1 1 2 0 8 0 rtentry 176 244 0 146 5 0 5 5 0 8 0 unpcb 144 2506 0 2486 22 18 4 10 0 8 3 syncache 336 15 0 15 4 3 1 1 0 8 1 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 736 1046 0 1039 20 13 7 7 0 8 6 arp 128 32 0 18 1 0 1 1 0 8 0 inpcb 328 3482 0 3469 24 14 10 13 0 8 8 nd6 144 43 0 22 1 0 1 1 0 8 0 pkpcb 40 25 0 25 4 3 1 1 0 8 1 kcovpl 48 15 0 7 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 204 0 204 1 0 1 1 0 8 1 pppxif 1504 44 0 44 5 4 1 1 0 8 1 pffrag 232 16 0 6 1 0 1 1 0 482 0 pffrnode 88 12 0 3 1 0 1 1 0 8 0 pffrent 40 23 0 13 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 pfrktable 1344 3 0 3 3 3 0 1 0 8 0 pftag 88 1 0 1 1 1 0 1 0 8 0 pfstitem 24 224 0 48 2 0 2 2 0 8 0 pfstkey 128 224 0 48 6 0 6 6 0 8 0 pfstate 384 224 0 48 18 0 18 18 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 rttmr 136 2 0 2 2 1 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1133 0 671 36 7 29 30 0 8 0 art_table 40 1136 0 671 5 0 5 5 0 8 0 art_node 32 243 0 157 1 0 1 1 0 8 0 sysvmsgpl 40 24 0 19 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 80 0 54 1 0 1 1 0 8 0 shmpl 112 39 0 2 2 0 2 2 0 8 0 dirhash 1024 55 0 38 3 0 3 3 0 8 0 dino2pl 256 6228 0 4710 96 0 96 96 0 8 0 ffsino 296 6228 0 4710 118 0 118 118 0 8 0 nchpl 144 9610 0 7897 64 0 64 64 0 8 0 rtmask 32 26 0 26 3 2 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 37107 0 37107 1 0 1 1 0 8 1 percpumem 16 286 0 235 1 0 1 1 0 8 0 kstatmem 264 208 0 176 4 1 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 3 0 3 3 2 1 1 0 8 1 scxspl 216 61948 0 61948 13 11 2 8 1 8 2 plimitpl 152 598 0 581 1 0 1 1 0 8 0 sigapl 424 2735 0 2682 9 1 8 9 0 8 0 knotepl 120 810 0 0 25 0 25 25 0 8 0 kqueuepl 224 1358 0 1347 10 7 3 5 0 8 2 pipepl 344 601 0 573 14 7 7 9 0 8 4 fdescpl 528 2688 0 2658 3 0 3 3 0 8 0 filepl 160 22426 0 22197 42 25 17 24 0 8 4 lockfpl 104 1289 0 1286 3 2 1 2 0 8 0 lockfspl 48 422 0 419 1 0 1 1 0 8 0 sessionpl 144 41 0 32 1 0 1 1 0 8 0 pgrppl 48 283 0 266 1 0 1 1 0 8 0 ucredpl 104 3874 0 3860 1 0 1 1 0 8 0 zombiepl 144 2683 0 2682 1 0 1 1 0 8 0 processpl 1232 2735 0 2682 6 0 6 6 0 8 0 procpl 664 6404 0 6344 10 3 7 9 0 8 0 sosppl 168 21 0 21 4 3 1 1 0 8 1 sockpl 752 6392 0 6354 80 68 12 28 0 8 7 mcl64k 65536 12 0 0 2 0 2 2 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 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 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 91 0 0 12 0 12 12 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 1191 0 0 73 0 73 73 0 8 0 bufpl 280 24663 0 18520 440 0 440 440 0 8 0 anonpl 32 13761 0 0 111 0 111 111 0 246 0 amapchunkpl 152 79384 0 78891 57 21 36 38 0 158 10 amappl16 200 8842 0 8812 55 39 16 24 0 8 8 amappl15 192 42 0 42 2 2 0 1 0 8 0 amappl14 184 193 0 180 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 3485 0 3455 3 1 2 2 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 252 0 252 1 1 0 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 134 0 122 1 0 1 1 0 8 0 amappl6 120 261 0 257 1 0 1 1 0 8 0 amappl5 112 148 0 138 1 0 1 1 0 8 0 amappl4 104 342 0 323 1 0 1 1 0 8 0 amappl3 96 16304 0 16194 4 0 4 4 0 8 0 amappl2 88 845 0 780 2 0 2 2 0 8 0 amappl1 80 20325 0 19737 17 3 14 15 0 8 0 amappl 88 21865 0 21703 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma512 512 2 0 2 2 2 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 256 0 256 4 3 1 1 0 8 1 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 41 0 2 1 0 1 1 0 8 0 uaddrrnd 24 2688 0 2658 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2688 0 2658 1 0 1 1 0 8 0 vmmpekpl 168 22806 0 22749 3 0 3 3 0 8 0 vmmpepl 168 174032 0 172089 126 17 109 110 0 357 11 vmsppl 488 2687 0 2658 6 1 5 5 0 8 0 rwobjpl 80 51338 0 44445 151 1 150 150 0 8 2 pdppl 4096 5383 0 5316 121 50 71 85 0 8 4 pvpl 32 24056 0 0 194 0 194 194 0 265 0 pmappl 256 2687 0 2658 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 400 0 80 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace dt_ioctl_record_stop(ffff800001492000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff800031008020) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff800031008020) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a315480) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80794be530,81,fffffd80097fb680,ffff800031008020) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8068b46048,ffff800031008020) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8068b46048,ffff800031008020) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8068b46048,ffff800031008020) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8068b46048,ffff800031008020) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff800031008020) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff800031008020,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800031008020,ffff80002a3157f0,ffff80002a315740) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3157f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3157f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7204c3b81240, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299edff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299edff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5