panic: kernel diagnostic assertion "rn != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/pipex.c", line 459 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833a643d) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833ea289,ffffffff834008ff,1cb,ffffffff8339e417) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003c435748) at pipex_unlink_session_locked+0x409 pipex_destroy_all_sessions(ffff800010fcd800) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff800010fcd800) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:151 pppacclose(637e,41,2000,ffff80003c411260) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80002efd7090) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806e99f880,41,fffffd80097fd6e8,ffff80003c411260) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805f04fdc8,ffff80003c411260) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805f04fdc8,ffff80003c411260) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805f04fdc8,ffff80003c411260) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805f04fdc8,ffff80003c411260) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c411260) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c411260,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c411260,ffff80002efd7400,ffff80002efd7350) at sys_exit+0x1a sys/kern/kern_exit.c:-1 end trace frame: 0xffff80002efd73f0, 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 "rn != NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/pipex.c", line 459 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833a643d) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833ea289,ffffffff834008ff,1cb,ffffffff8339e417) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003c435748) at pipex_unlink_session_locked+0x409 pipex_destroy_all_sessions(ffff800010fcd800) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff800010fcd800) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:151 pppacclose(637e,41,2000,ffff80003c411260) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80002efd7090) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806e99f880,41,fffffd80097fd6e8,ffff80003c411260) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805f04fdc8,ffff80003c411260) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805f04fdc8,ffff80003c411260) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805f04fdc8,ffff80003c411260) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805f04fdc8,ffff80003c411260) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c411260) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c411260,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c411260,ffff80002efd7400,ffff80002efd7350) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002efd7400) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002efd7400) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x758c0e66a750, count: -16 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002efd6e60 rbx 0xffffffff83868e07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff80003c411260 rax 0xffffffff83867ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x2a6a7a9f56bf2165 r11 0x6db5eb3523e37349 r12 0xffffffff83868c08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff81a5eac5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002efd6e50 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=378576 pid=62110 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c411260 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c410038,0xffff80003c4102e0 process=0xffff80002a3bc018 user=0xffff80002efd2000, vmspace=0xfffffd806cae55d0 estcpu=36, cpticks=4, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 53900 16503 6876 0 2 0 syz-executor 90369 205429 55722 0 2 0 syz-executor 90369 182619 55722 0 3 0x4000080 fsleep syz-executor 70980 209143 40328 0 3 0x80 nanoslp syz-executor 70980 230567 40328 0 3 0x4000080 sbwait syz-executor 70980 434760 40328 0 3 0x4000080 fsleep syz-executor 47033 190147 75435 0 2 0x10000082 syz-executor 55722 130821 75435 0 3 0x82 nanoslp syz-executor 79569 59849 1 0 3 0x100083 ttyopn getty 7564 297245 75435 0 3 0x82 nanoslp syz-executor 61709 54674 75435 0 2 0x2 syz-executor 40328 26751 75435 0 3 0x82 nanoslp syz-executor 64942 299214 75435 0 3 0x82 wait syz-executor 6876 48449 75435 0 3 0x82 nanoslp syz-executor 79538 152948 75435 0 3 0x82 nanoslp syz-executor 75435 16016 68573 0 2 0x2 syz-executor 68573 400465 45564 0 3 0x10008a sigsusp ksh 45564 443581 38845 0 3 0x98 kqread sshd-session 38845 47409 9815 0 3 0x92 kqread sshd-session 9815 166683 1 0 3 0x88 kqread sshd 57846 462258 8696 74 3 0x1100092 bpf pflogd 8696 155555 1 0 3 0x80 sbwait pflogd 26594 183536 66973 73 3 0x1100090 kqread syslogd 66973 380008 1 0 3 0x100082 sbwait syslogd 90786 296050 1 0 3 0x100080 kqread resolvd 98617 314888 18313 77 2 0x100012 dhcpleased 95941 34809 18313 77 2 0x100012 dhcpleased 18313 163704 1 0 3 0x80 kqread dhcpleased 63752 437734 0 0 3 0x14200 bored smr 51135 395559 0 0 2 0x14200 zerothread 366 136100 0 0 3 0x14200 aiodoned aiodoned 14490 202718 0 0 3 0x14200 syncer update 87604 374439 0 0 3 0x14200 cleaner cleaner 78869 63437 0 0 3 0x14200 reaper reaper 84846 166898 0 0 3 0x14200 pgdaemon pagedaemon 36882 125073 0 0 3 0x14200 bored viomb 30352 324831 0 0 3 0x40014200 acpi0 acpi0 74461 354912 0 0 7 0x40014200 idle1 4012 235640 0 0 3 0x14200 bored softnet1 54829 148964 0 0 3 0x14200 bored softnet0 370 83693 0 0 3 0x14200 bored systqmp 72102 301007 0 0 3 0x14200 bored systq 90596 7535 0 0 3 0x14200 tmoslp softclockmp 64559 65667 0 0 3 0x40014200 tmoslp softclock 43560 373852 0 0 3 0x40014200 idle0 1 79175 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex /syzkaller/managers/multicore/kernel/sys/net/pipex.c:78 r = 0 (0xffffffff837d4050) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 pipex_destroy_all_sessions+0x2f sys/net/pipex.c:144 #4 pppacclose+0x16f sys/net/if_pppx.c:1335 #5 spec_close+0x417 sys/kern/spec_vnops.c:-1 #6 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #7 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #7 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #8 fdrop+0x121 sys/kern/kern_descrip.c:1280 #9 closef+0x192 sys/kern/kern_descrip.c:1264 #10 fdfree+0x116 sys/kern/kern_descrip.c:1195 #11 exit1+0x576 sys/kern/kern_exit.c:215 #12 sys_exit+0x1a sys/kern/kern_exit.c:-1 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #14 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10241 11121K 13063K 166960K 17580 0 pcb 17 18K 34K 166960K 1070 0 rtable 265 15K 15K 166960K 979 0 pf 39 18K 82K 166960K 324 0 ifaddr 42 8K 8K 166960K 197 0 ifgroup 59 2K 2K 166960K 340 0 sysctl 4 1K 9K 166960K 26 0 counters 74 37K 38K 166960K 504 0 ioctlops 0 0K 4K 166960K 2314 0 iov 0 0K 24K 166960K 429 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1557 98K 98K 166960K 5214 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 53 0 VM map 2 1K 1K 166960K 2 0 sem 21 28K 28K 166960K 176 0 dirhash 12 2K 2K 166960K 63 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 110K 166960K 3147 0 sigio 0 0K 0K 166960K 254 0 proc 73 115K 180K 166960K 965 0 subproc 72 4K 4K 166960K 113 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 618 0 in_multi 77 5K 7K 166960K 298 0 ether_multi 1 0K 0K 166960K 49 0 mrt 2 0K 0K 166960K 25 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 825 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 7 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 227 158K 196K 166960K 29791 0 UVM aobj 41 20K 20K 166960K 42 0 pinsyscall 41 82K 103K 166960K 4410 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 220 0 NDP 13 0K 2K 166960K 145 0 temp 83 8676K 8920K 166960K 158924 0 kqueue 14 22K 31K 166960K 586 0 SYN cache 2 0K 16K 166960K 4 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 120 414 0 411 5 4 1 3 0 8 0 rtentry 176 282 0 183 6 0 6 6 0 8 0 unpcb 144 3177 0 3156 22 17 5 6 0 8 4 syncache 336 13 0 13 5 4 1 1 0 8 1 tcpqe 32 3 0 3 2 2 0 1 0 8 0 tcpcb 736 1288 0 1281 22 15 7 7 0 8 6 arp 136 42 0 23 1 0 1 1 0 8 0 inpcb 328 4558 0 4544 24 17 7 10 0 8 5 nd6 152 45 0 23 1 0 1 1 0 8 0 pkpcb 40 21 0 21 5 4 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 191 0 189 1 0 1 1 0 8 0 pppxif 1504 11 0 11 4 3 1 1 0 8 1 pfstscr 40 2 0 0 1 0 1 1 0 8 0 pffrag 232 43 0 30 1 0 1 1 0 482 0 pffrnode 88 23 0 10 1 0 1 1 0 8 0 pffrent 40 149 0 136 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 4 0 4 3 2 1 1 0 8 1 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 193 0 83 1 0 1 1 0 8 0 pfstkey 128 193 0 83 4 0 4 4 0 8 0 pfstate 448 191 0 83 13 0 13 13 0 8 0 pfrule 1344 31 0 26 2 1 1 2 0 8 0 rttmr 136 6 0 6 3 3 0 1 0 8 0 art_heap8 4096 7 0 0 7 0 7 7 0 8 0 art_heap4 256 1310 0 923 44 8 36 36 0 8 6 art_table 40 1317 0 923 6 0 6 6 0 8 0 art_node 32 279 0 192 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 15 1 0 1 1 0 8 0 semupl 112 2 0 2 2 1 1 1 0 8 1 semapl 112 167 0 148 1 0 1 1 0 8 0 shmpl 112 30 0 0 1 0 1 1 0 8 0 dirhash 1024 51 0 34 3 0 3 3 0 8 0 dino2pl 256 7879 0 6367 96 0 96 96 0 8 0 ffsino 296 7879 0 6367 118 0 118 118 0 8 0 nchpl 144 12216 0 10496 65 0 65 65 0 8 0 rtmask 32 35 0 33 4 3 1 1 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 47251 0 47251 2 1 1 1 0 8 1 percpumem 16 267 0 215 1 0 1 1 0 8 0 vcpupl 3968 9 0 1 2 0 2 2 0 8 0 vmpool 840 9 0 1 1 0 1 1 0 8 0 kstatmem 264 240 0 210 5 2 3 3 0 8 0 scsiplug 72 20 0 20 4 3 1 1 0 8 1 scxspl 216 60654 0 60654 12 11 1 8 1 8 1 plimitpl 152 1054 0 1037 1 0 1 1 0 8 0 sigapl 424 3471 0 3424 9 3 6 8 0 8 0 knotepl 120 835 0 0 25 0 25 25 0 8 0 kqueuepl 224 1513 0 1502 16 13 3 5 0 8 2 pipepl 344 557 0 530 15 12 3 9 0 8 0 fdescpl 528 3427 0 3397 3 0 3 3 0 8 0 filepl 160 29265 0 29044 32 16 16 20 0 8 4 lockfpl 104 1580 0 1578 2 1 1 2 0 8 0 lockfspl 48 573 0 571 1 0 1 1 0 8 0 sessionpl 144 36 0 27 1 0 1 1 0 8 0 pgrppl 48 168 0 151 1 0 1 1 0 8 0 ucredpl 104 4712 0 4699 1 0 1 1 0 8 0 zombiepl 144 3428 0 3424 1 0 1 1 0 8 0 processpl 1232 3471 0 3424 7 3 4 6 0 8 0 procpl 664 8135 0 8085 8 1 7 8 0 8 0 sosppl 176 19 0 18 6 5 1 1 0 8 0 sockpl 752 8407 0 8369 60 47 13 21 0 8 8 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 126 0 0 16 0 16 16 0 8 0 mcl2k 2048 93 0 0 12 0 12 12 0 8 0 mtagpl 96 280 0 0 7 0 7 7 0 8 0 mbufpl 256 2031 0 0 126 0 126 126 0 8 0 bufpl 280 21740 0 15604 439 0 439 439 0 8 0 anonpl 32 11845 0 0 96 0 96 96 0 246 0 amapchunkpl 152 104843 0 104397 57 27 30 41 0 158 6 amappl16 200 10905 0 10863 56 41 15 20 0 8 5 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 4 0 4 1 1 0 1 0 8 0 amappl13 176 517 0 516 1 0 1 1 0 8 0 amappl12 168 3840 0 3800 3 0 3 3 0 8 0 amappl11 160 24 0 23 1 0 1 1 0 8 0 amappl10 152 47 0 32 1 0 1 1 0 8 0 amappl9 144 264 0 263 2 1 1 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 98 0 96 1 0 1 1 0 8 0 amappl6 120 341 0 328 1 0 1 1 0 8 0 amappl5 112 85 0 75 1 0 1 1 0 8 0 amappl4 104 552 0 521 1 0 1 1 0 8 0 amappl3 96 18303 0 18217 4 1 3 3 0 8 0 amappl2 88 3596 0 3519 2 0 2 2 0 8 0 amappl1 80 24014 0 23432 15 1 14 15 0 8 0 amappl 88 28427 0 28276 5 0 5 5 0 92 0 uvmvnodes 80 196 0 0 4 0 4 4 0 8 0 dma65536 65536 3 0 3 2 2 0 1 0 8 0 dma32768 32768 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 1 0 0 1 0 1 1 0 8 0 dma256 256 10 0 10 3 3 0 1 0 8 0 dma128 128 262 0 262 6 5 1 1 0 8 1 dma64 64 8 0 8 2 1 1 1 0 8 1 dma32 32 8 0 8 2 1 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 41 0 1 1 0 1 1 0 8 0 uaddrrnd 24 3427 0 3397 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3427 0 3397 1 0 1 1 0 8 0 vmmpekpl 168 26705 0 26658 3 0 3 3 0 8 0 vmmpepl 168 220813 0 218930 121 19 102 103 0 357 3 vmsppl 488 3426 0 3397 5 0 5 5 0 8 0 rwobjpl 80 55454 0 54288 33 2 31 32 0 8 0 pdppl 4096 6879 0 6804 131 52 79 85 0 8 4 pvpl 32 20993 0 0 168 0 168 168 0 265 0 pmappl 256 3435 0 3398 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 495 0 89 12 0 12 12 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:438 panic(ffffffff833a643d) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833ea289,ffffffff834008ff,1cb,ffffffff8339e417) at __assert+0x29 sys/kern/subr_prf.c:-1 pipex_unlink_session_locked(ffff80003c435748) at pipex_unlink_session_locked+0x409 pipex_destroy_all_sessions(ffff800010fcd800) at pipex_destroy_all_sessions+0xd9 pipex_rele_session sys/net/pipex.c:-1 [inline] pipex_destroy_all_sessions(ffff800010fcd800) at pipex_destroy_all_sessions+0xd9 sys/net/pipex.c:151 pppacclose(637e,41,2000,ffff80003c411260) at pppacclose+0x16f sys/net/if_pppx.c:1335 spec_close(ffff80002efd7090) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806e99f880,41,fffffd80097fd6e8,ffff80003c411260) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805f04fdc8,ffff80003c411260) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805f04fdc8,ffff80003c411260) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805f04fdc8,ffff80003c411260) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805f04fdc8,ffff80003c411260) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c411260) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c411260,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c411260,ffff80002efd7400,ffff80002efd7350) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002efd7400) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002efd7400) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x758c0e66a750, count: -16 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) 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(ffff8000299ddff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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(ffff8000299ddff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5