panic: kernel diagnostic assertion "cifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 1078 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *176868 70678 0 0x2 0 0K ifconfig db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e69d4) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83099abb,ffffffff83014783,436,ffffffff8300b40e) at __assert+0x29 rtrequest(1,ffff80002a135de8,4,ffff80002a135e90,0) at rtrequest+0xdce sys/net/route.c:1078 rt_ifa_add(ffff800000e5a200,840100,ffff800000e5a258,0) at rt_ifa_add+0x22e sys/net/route.c:1273 in_ifinit(ffff80000159f000,ffff800000e5a200,ffff80002a136100,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline] in_ifinit(ffff80000159f000,ffff800000e5a200,ffff80002a136100,1) at in_ifinit+0x4bd sys/netinet/in.c:703 in_ioctl_change_ifaddr(8040691a,ffff80002a1360f0,ffff80000159f000) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504 ifioctl(ffff800001588540,8040691a,ffff80002a1360f0,ffff8000fffefc00) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] ifioctl(ffff800001588540,8040691a,ffff80002a1360f0,ffff8000fffefc00) at ifioctl+0x1571 sys/net/if.c:2449 sys_ioctl(ffff8000fffefc00,ffff80002a1362d0,ffff80002a136220) at sys_ioctl+0x67c syscall(ffff80002a1362d0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a1362d0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e696596a2c0, count: 4 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 "cifp != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/route.c", line 1078 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e69d4) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83099abb,ffffffff83014783,436,ffffffff8300b40e) at __assert+0x29 rtrequest(1,ffff80002a135de8,4,ffff80002a135e90,0) at rtrequest+0xdce sys/net/route.c:1078 rt_ifa_add(ffff800000e5a200,840100,ffff800000e5a258,0) at rt_ifa_add+0x22e sys/net/route.c:1273 in_ifinit(ffff80000159f000,ffff800000e5a200,ffff80002a136100,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline] in_ifinit(ffff80000159f000,ffff800000e5a200,ffff80002a136100,1) at in_ifinit+0x4bd sys/netinet/in.c:703 in_ioctl_change_ifaddr(8040691a,ffff80002a1360f0,ffff80000159f000) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504 ifioctl(ffff800001588540,8040691a,ffff80002a1360f0,ffff8000fffefc00) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] ifioctl(ffff800001588540,8040691a,ffff80002a1360f0,ffff8000fffefc00) at ifioctl+0x1571 sys/net/if.c:2449 sys_ioctl(ffff8000fffefc00,ffff80002a1362d0,ffff80002a136220) at sys_ioctl+0x67c syscall(ffff80002a1362d0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a1362d0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e696596a2c0, count: -11 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a135be0 rbx 0xffffffff8345fdcf cpu_info_full_primary+0x2dcf rdx 0 rcx 0xffff8000fffefc00 rax 0xffffffff8345eff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4e038e6020985603 r11 0x46c2cd7afcc542a r12 0xffffffff8345fbd0 cpu_info_full_primary+0x2bd0 r13 0 r14 0 r15 0x1 rip 0xffffffff819378e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a135bd0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (ifconfig) tid=176868 pid=70678 tcnt=1 stat=onproc flags process=2 proc=0 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffee538,0xffffffff83527868 process=0xffff800036389b38 user=0xffff80002a131000, vmspace=0xfffffd806ba99c08 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *70678 176868 46773 0 7 0x2 ifconfig 46773 245227 98222 0 3 0x10008a sigsusp sh 73995 268489 7604 0 2 0x2 syz-executor 98222 46212 7604 0 3 0x82 wait syz-executor 60458 498638 7604 0 3 0x82 piperd syz-executor 48253 167989 0 0 3 0x14280 nfsidl nfsio 66888 234023 0 0 3 0x14280 nfsidl nfsio 58384 3215 0 0 3 0x14280 nfsidl nfsio 96268 282115 0 0 3 0x14280 nfsidl nfsio 77006 489977 0 0 3 0x14280 nfsidl nfsio 413 486430 0 0 3 0x14280 nfsidl nfsio 53964 435731 0 0 3 0x14280 nfsidl nfsio 61896 132951 0 0 3 0x14280 nfsidl nfsio 21110 444714 0 0 3 0x14280 nfsidl nfsio 33162 43975 0 0 3 0x14280 nfsidl nfsio 51950 121929 0 0 3 0x14280 nfsidl nfsio 75141 316759 0 0 3 0x14280 nfsidl nfsio 72810 185323 0 0 3 0x14280 nfsidl nfsio 57930 19361 0 0 3 0x14280 nfsidl nfsio 85175 390493 0 0 3 0x14280 nfsidl nfsio 43658 455477 0 0 3 0x14280 nfsidl nfsio 42093 354934 0 0 3 0x14280 nfsidl nfsio 3832 112920 0 0 3 0x14280 nfsidl nfsio 1144 401775 0 0 3 0x14280 nfsidl nfsio 8717 21343 0 0 3 0x14280 nfsidl nfsio 49488 11993 1 0 3 0x100083 ttyin getty 64618 287434 0 0 3 0x14200 acct acct 98449 498487 7604 0 3 0x82 piperd syz-executor 10514 505051 7604 0 3 0x82 piperd syz-executor 13183 128075 7604 0 3 0x82 piperd syz-executor 74523 356324 7604 0 3 0x82 piperd syz-executor 63007 247977 0 0 3 0x14200 bored sosplice 7604 51394 24970 0 3 0x82 wait syz-executor 24970 129715 51902 0 3 0x10008a sigsusp ksh 51902 522959 8573 0 3 0x98 kqread sshd-session 8573 288858 13077 0 3 0x92 kqread sshd-session 13077 21801 1 0 3 0x88 kqread sshd 59739 252178 2400 74 3 0x1100092 bpf pflogd 2400 366115 1 0 3 0x80 sbwait pflogd 20298 118148 31652 73 2 0x1100010 syslogd 31652 455238 1 0 3 0x100082 sbwait syslogd 59579 181858 1 0 3 0x100080 kqread resolvd 86187 404081 31174 77 3 0x100092 kqread dhcpleased 32666 108120 31174 77 3 0x100092 kqread dhcpleased 31174 479439 1 0 3 0x80 kqread dhcpleased 17029 389727 0 0 3 0x14200 bored smr 46464 516907 0 0 2 0x14200 zerothread 13164 94609 0 0 3 0x14200 aiodoned aiodoned 6829 308227 0 0 3 0x14200 syncer update 50635 341527 0 0 3 0x14200 cleaner cleaner 19009 83647 0 0 3 0x14200 reaper reaper 84491 193549 0 0 3 0x14200 pgdaemon pagedaemon 5635 311554 0 0 3 0x14200 bored viomb 11993 274839 0 0 3 0x40014200 acpi0 acpi0 18234 327730 0 0 7 0x40014200 idle1 18404 298292 0 0 3 0x14200 bored softnet3 39500 29218 0 0 3 0x14200 bored softnet2 52228 511293 0 0 3 0x14200 bored softnet1 62694 447951 0 0 3 0x14200 bored softnet0 76155 222045 0 0 3 0x14200 bored systqmp 92744 269454 0 0 3 0x14200 bored systq 70557 426280 0 0 2 0x14200 softclockmp 86855 130688 0 0 2 0x40014200 softclock 48244 486217 0 0 3 0x40014200 idle0 1 68377 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 70678 (ifconfig) thread 0xffff8000fffefc00 (176868) exclusive rwlock netlock r = 0 (0xffffffff834a3860) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 in_ioctl_change_ifaddr+0xbe sys/netinet/in.c:413 #2 ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] #2 ifioctl+0x1571 sys/net/if.c:2449 #3 sys_ioctl+0x67c #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff835af680) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 ifioctl+0x47f sys/net/if.c:2096 #2 sys_ioctl+0x67c #3 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #3 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 20298 (syslogd) thread 0xffff8000ffffd1c8 (118148) exclusive rrwlock inode r = 0 (0xfffffd806e1460a0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2926 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10226 14201K 18627K 166960K 13026 0 pcb 17 13K 14K 166960K 211 0 rtable 177 6K 8K 166960K 1585 0 pf 39 18K 25K 166960K 200 0 ifaddr 35 6K 8K 166960K 221 0 ifgroup 58 2K 2K 166960K 259 0 sysctl 3 0K 1K 166960K 4 0 counters 64 36K 37K 166960K 178 0 ioctlops 0 0K 4K 166960K 1614 0 iov 0 0K 16K 166960K 195 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1484 93K 94K 166960K 2869 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 5K 9K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 54 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 12 41K 89K 166960K 1611 0 sigio 0 0K 0K 166960K 29 0 proc 79 103K 128K 166960K 1611 0 subproc 96 6K 6K 166960K 553 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 157 0 in_multi 66 4K 7K 166960K 543 0 ether_multi 1 0K 0K 166960K 16 0 mrt 1 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 972 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 173 63K 99K 166960K 14651 0 UVM aobj 9 2K 2K 166960K 10 0 pinsyscall 37 74K 104K 166960K 3588 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 66 0 NDP 14 0K 1K 166960K 159 0 temp 75 6823K 6887K 166960K 58547 0 kqueue 13 20K 30K 166960K 175 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 243 0 240 3 2 1 3 0 8 0 rtentry 112 540 0 463 5 1 4 4 0 8 0 unpcb 144 938 0 921 12 11 1 5 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 461 0 457 17 13 4 8 0 8 3 arp 120 89 0 74 1 0 1 1 0 8 0 inpcb 336 1696 0 1687 19 14 5 8 0 8 3 nd6 136 140 0 121 1 0 1 1 0 8 0 pkpcb 40 7 0 7 4 4 0 1 0 8 0 kcovpl 48 42 0 35 1 0 1 1 0 8 0 ppxss 1168 16 0 16 6 6 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 11 0 7 1 0 1 1 0 482 0 pffrnode 88 8 0 4 1 0 1 1 0 8 0 pffrent 40 15 0 11 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 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 153 0 92 1 0 1 1 0 8 0 pfstkey 128 159 0 96 3 0 3 3 0 8 0 pfstate 376 156 0 95 8 0 8 8 0 8 0 pfrule 1344 30 0 22 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 2242 0 1911 33 5 28 29 0 8 1 art_table 32 2245 0 1911 4 0 4 4 0 8 0 art_node 16 533 0 465 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 7 2 1 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 48 0 38 1 0 1 1 0 8 0 shmpl 112 7 0 1 1 0 1 1 0 8 0 dirhash 1024 30 0 13 3 0 3 3 0 8 0 dino2pl 256 3572 0 2001 99 0 99 99 0 8 0 ffsino 272 3572 0 2001 107 1 106 106 0 8 0 nchpl 144 5195 0 3467 65 0 65 65 0 8 0 uvmvnodes 80 4735 0 0 97 0 97 97 0 8 0 vnodes 216 4735 0 0 264 0 264 264 0 8 0 namei 1024 22108 0 22108 4 3 1 1 0 8 1 percpumem 16 103 0 57 1 0 1 1 0 8 0 kstatmem 264 138 0 114 4 2 2 3 0 8 0 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 216 36551 0 36551 17 16 1 8 1 8 1 plimitpl 152 451 0 434 1 0 1 1 0 8 0 sigapl 424 1872 0 1806 11 2 9 9 0 8 0 futexpl 64 15590 0 15590 4 3 1 1 0 8 1 knotepl 120 829 0 0 26 1 25 25 0 8 0 kqueuepl 216 398 0 389 6 5 1 5 0 8 0 pipepl 320 412 0 385 7 4 3 6 0 8 0 fdescpl 496 1832 0 1806 7 2 5 5 0 8 0 filepl 152 11172 0 10942 30 18 12 18 0 8 2 lockfpl 104 557 0 555 3 2 1 2 0 8 0 lockfspl 48 186 0 184 1 0 1 1 0 8 0 sessionpl 144 58 0 49 1 0 1 1 0 8 0 pgrppl 48 118 0 101 1 0 1 1 0 8 0 ucredpl 104 1806 0 1792 1 0 1 1 0 8 0 zombiepl 144 1807 0 1806 1 0 1 1 0 8 0 processpl 1160 1872 0 1806 7 1 6 6 0 8 0 procpl 648 3472 0 3406 8 0 8 8 0 8 1 srpgc 96 9 0 9 4 4 0 1 0 8 0 sosppl 168 5 0 5 3 3 0 1 0 8 0 sockpl 664 2905 0 2877 29 23 6 14 0 8 3 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 246 0 0 31 0 31 31 0 8 0 mtagpl 96 55 0 0 2 0 2 2 0 8 0 mbufpl 256 344 0 0 18 0 18 18 0 8 0 bufpl 280 10570 0 4175 515 9 506 515 0 8 0 anonpl 24 352147 0 349075 96 20 76 76 0 185 38 amapchunkpl 152 48280 0 47978 48 16 32 40 0 158 14 amappl16 200 8282 0 8266 59 44 15 15 0 8 10 amappl15 192 28 0 28 1 1 0 1 0 8 0 amappl14 184 198 0 186 1 0 1 1 0 8 0 amappl13 176 10 0 9 1 0 1 1 0 8 0 amappl12 168 3027 0 3001 3 1 2 2 0 8 0 amappl11 160 56 0 42 1 0 1 1 0 8 0 amappl10 152 37 0 37 1 1 0 1 0 8 0 amappl9 144 142 0 141 1 0 1 1 0 8 0 amappl8 136 30 0 27 1 0 1 1 0 8 0 amappl7 128 185 0 173 1 0 1 1 0 8 0 amappl6 120 503 0 500 1 0 1 1 0 8 0 amappl5 112 269 0 256 1 0 1 1 0 8 0 amappl4 104 416 0 395 1 0 1 1 0 8 0 amappl3 96 9428 0 9359 4 0 4 4 0 8 0 amappl2 88 1158 0 1088 2 0 2 2 0 8 0 amappl1 80 14119 0 13562 15 2 13 14 0 8 0 amappl 88 13904 0 13792 5 0 5 5 0 92 0 dma65536 65536 2 0 2 2 2 0 1 0 8 0 dma32768 32768 2 0 2 1 1 0 1 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 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 9 0 9 4 4 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 21 0 20 1 0 1 1 0 8 0 aobjpl 72 9 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1832 0 1806 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1832 0 1806 1 0 1 1 0 8 0 vmmpekpl 168 15667 0 15607 5 1 4 4 0 8 0 vmmpepl 168 118843 0 117332 115 22 93 95 0 357 11 vmsppl 440 1831 0 1806 6 2 4 5 0 8 0 rwobjpl 56 40768 0 35149 87 3 84 84 0 8 3 pdppl 4096 3671 0 3612 139 70 69 83 0 8 10 pvpl 32 31294 0 0 253 1 252 252 0 265 0 pmappl 248 1831 0 1806 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 493 0 122 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e69d4) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83099abb,ffffffff83014783,436,ffffffff8300b40e) at __assert+0x29 rtrequest(1,ffff80002a135de8,4,ffff80002a135e90,0) at rtrequest+0xdce sys/net/route.c:1078 rt_ifa_add(ffff800000e5a200,840100,ffff800000e5a258,0) at rt_ifa_add+0x22e sys/net/route.c:1273 in_ifinit(ffff80000159f000,ffff800000e5a200,ffff80002a136100,1) at in_ifinit+0x4bd in_insert_prefix sys/netinet/in.c:770 [inline] in_ifinit(ffff80000159f000,ffff800000e5a200,ffff80002a136100,1) at in_ifinit+0x4bd sys/netinet/in.c:703 in_ioctl_change_ifaddr(8040691a,ffff80002a1360f0,ffff80000159f000) at in_ioctl_change_ifaddr+0x92c sys/netinet/in.c:504 ifioctl(ffff800001588540,8040691a,ffff80002a1360f0,ffff8000fffefc00) at ifioctl+0x1571 pru_control sys/sys/protosw.h:355 [inline] ifioctl(ffff800001588540,8040691a,ffff80002a1360f0,ffff8000fffefc00) at ifioctl+0x1571 sys/net/if.c:2449 sys_ioctl(ffff8000fffefc00,ffff80002a1362d0,ffff80002a136220) at sys_ioctl+0x67c syscall(ffff80002a1362d0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a1362d0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e696596a2c0, count: -11 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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+0x41e sys/dev/acpi/acpicpu.c:1219 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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+0x41e sys/dev/acpi/acpicpu.c:1219 sched_idle(ffff800029b7bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5