panic: kernel diagnostic assertion "!ISSET(p->p_flag, P_WSLEEP) || p->p_stat == SSTOP" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_sched.c", line 251 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 266123 67033 32767 0x10 0 1 syz-executor.2 *435167 66152 0 0x14000 0x200 0K reaper db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279b653) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82816c95,ffffffff82762d4d,fb,ffffffff8283e78a) at __assert+0x29 sys/kern/subr_prf.c:157 setrunqueue(ffffffff82bc6ff0,ffff8000212a0b18,50) at setrunqueue+0x2e5 sys/kern/kern_sched.c:249 schedcpu(ffffffff82c83868) at schedcpu+0x28b sys/kern/sched_bsd.c:235 timeout_run(ffffffff82c83868) at timeout_run+0xd0 sys/kern/kern_timeout.c:638 softclock_process_tick_timeout(ffffffff82c83868,0) at softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:685 softclock(0) at softclock+0x130 sys/kern/kern_timeout.c:708 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x23 __mp_lock(ffffffff82c48808) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c48808) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff8000211ad058) at reaper+0x160 sys/kern/kern_exit.c:437 end trace frame: 0x0, 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: kernel diagnostic assertion "!ISSET(p->p_flag, P_WSLEEP) || p->p_stat == SSTOP" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_sched.c", line 251 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279b653) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82816c95,ffffffff82762d4d,fb,ffffffff8283e78a) at __assert+0x29 sys/kern/subr_prf.c:157 setrunqueue(ffffffff82bc6ff0,ffff8000212a0b18,50) at setrunqueue+0x2e5 sys/kern/kern_sched.c:249 schedcpu(ffffffff82c83868) at schedcpu+0x28b sys/kern/sched_bsd.c:235 timeout_run(ffffffff82c83868) at timeout_run+0xd0 sys/kern/kern_timeout.c:638 softclock_process_tick_timeout(ffffffff82c83868,0) at softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:685 softclock(0) at softclock+0x130 sys/kern/kern_timeout.c:708 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x23 __mp_lock(ffffffff82c48808) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c48808) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff8000211ad058) at reaper+0x160 sys/kern/kern_exit.c:437 end trace frame: 0x0, count: -12 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000211b9670 rbx 0xffffffff82bc7b8f cpu_info_full_primary+0x2b8f rdx 0 rcx 0 rax 0xffff8000211ad058 r8 0x101010101010101 r9 0x8080808080808080 r10 0xb086c0fb1d68b777 r11 0x878bc462616b3332 r12 0xffffffff82bc7990 cpu_info_full_primary+0x2990 r13 0 r14 0 r15 0x1 rip 0xffffffff8226bb6c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff8000211b9660 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{0}> show proc PROC (reaper) pid=435167 stat=onproc flags process=14000 proc=200 pri=4, usrpri=54, nice=20 forw=0xffffffffffffffff, list=0xffff8000211ad880,0xffff8000211acdb0 process=0xffff8000ffffe9e0 user=0xffff8000211b4000, vmspace=0xffffffff82d23da0 estcpu=4, cpticks=25, pctcpu=1.23 user=0, sys=1, intr=20 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 16545 85571 27464 32767 3 0x3810 suspend syz-executor.6 16545 467038 27464 32767 2 0x4081810 syz-executor.6 16545 116138 27464 32767 2 0x40818b0 syz-executor.6 30148 142989 83364 32767 2 0x10 syz-executor.3 30148 57510 83364 32767 3 0x4000090 fsleep syz-executor.3 30148 267283 83364 32767 2 0x4000010 syz-executor.3 59782 372479 3476 32767 2 0x10 syz-executor.1 59782 520842 3476 32767 3 0x4000090 fsleep syz-executor.1 21878 451105 7309 32767 2 0x10 syz-executor.4 21878 520789 7309 32767 3 0x4000090 fsleep syz-executor.4 21878 491597 7309 32767 3 0x4000090 fsleep syz-executor.4 74443 45022 91155 32767 2 0x10 syz-executor.0 74443 393965 91155 32767 2 0x4000010 syz-executor.0 74443 36540 91155 32767 2 0x4000010 syz-executor.0 63621 461212 80907 32767 2 0x3010 syz-executor.5 45907 322048 52415 32767 3 0x3010 suspend syz-executor.7 45907 99815 52415 32767 2 0x4081010 syz-executor.7 67033 266123 94538 32767 7 0x10 syz-executor.2 67033 299845 94538 32767 3 0x4000090 fsleep syz-executor.2 27464 205151 14174 32767 3 0x90 nanoslp syz-executor.6 14174 424041 91254 0 3 0x82 wait syz-executor.6 80907 300260 21883 32767 3 0x90 nanoslp syz-executor.5 21883 345412 91254 0 3 0x82 wait syz-executor.5 80887 453896 0 0 3 0x14200 bored sosplice 52415 80020 88520 32767 3 0x90 nanoslp syz-executor.7 83364 411129 67723 32767 3 0x90 nanoslp syz-executor.3 88520 502 91254 0 3 0x82 wait syz-executor.7 7309 199858 84907 32767 3 0x90 nanoslp syz-executor.4 94538 86764 24155 32767 3 0x90 nanoslp syz-executor.2 84907 95115 91254 0 3 0x82 wait syz-executor.4 24155 117271 91254 0 3 0x82 wait syz-executor.2 67723 40643 91254 0 3 0x82 wait syz-executor.3 3476 474613 95712 32767 3 0x90 nanoslp syz-executor.1 95712 488436 91254 0 3 0x82 wait syz-executor.1 91155 341876 10350 32767 3 0x90 nanoslp syz-executor.0 10350 190690 91254 0 3 0x82 wait syz-executor.0 91254 371187 48173 0 3 0x82 thrsleep syz-fuzzer 91254 266874 48173 0 3 0x4000082 thrsleep syz-fuzzer 91254 432324 48173 0 3 0x4000082 wait syz-fuzzer 91254 377062 48173 0 3 0x4000082 thrsleep syz-fuzzer 91254 168507 48173 0 3 0x4000082 wait syz-fuzzer 91254 73242 48173 0 3 0x4000082 wait syz-fuzzer 91254 516683 48173 0 3 0x4000082 thrsleep syz-fuzzer 91254 201446 48173 0 3 0x4000082 wait syz-fuzzer 91254 512435 48173 0 3 0x4000082 wait syz-fuzzer 91254 370050 48173 0 3 0x4000082 wait syz-fuzzer 91254 250572 48173 0 3 0x4000082 thrsleep syz-fuzzer 91254 273487 48173 0 3 0x4000082 thrsleep syz-fuzzer 91254 383134 48173 0 3 0x4000082 thrsleep syz-fuzzer 91254 273668 48173 0 3 0x4000082 wait syz-fuzzer 91254 229342 48173 0 3 0x4000082 wait syz-fuzzer 91254 55750 48173 0 3 0x4000082 kqread syz-fuzzer 48173 487291 46153 0 3 0x10008a sigsusp ksh 46153 315573 29745 0 3 0x9a kqread sshd 21762 474008 1 0 3 0x100083 ttyin getty 29745 79528 1 0 3 0x88 kqread sshd 33885 192451 40755 73 3 0x1100090 kqread syslogd 40755 420383 1 0 3 0x100082 netio syslogd 54182 142210 1 0 3 0x100080 kqread resolvd 32191 95129 83533 77 3 0x100092 kqread dhcpleased 44834 88139 83533 77 3 0x100092 kqread dhcpleased 83533 243791 1 0 3 0x80 kqread dhcpleased 87415 194714 0 0 3 0x14200 bored smr 44782 508514 0 0 2 0x14200 zerothread 59160 287131 0 0 3 0x14200 aiodoned aiodoned 47118 241935 0 0 3 0x14200 syncer update 48322 475159 0 0 3 0x14200 cleaner cleaner *66152 435167 0 0 7 0x14200 reaper 82700 229460 0 0 3 0x14200 pgdaemon pagedaemon 53025 200935 0 0 3 0x14200 bored viomb 32824 223847 0 0 3 0x40014200 acpi0 acpi0 63618 403489 0 0 3 0x40014200 idle1 5847 127831 0 0 3 0x14200 bored softnet3 18540 88821 0 0 3 0x14200 bored softnet2 30465 223957 0 0 3 0x14200 bored softnet1 95874 134354 0 0 3 0x14200 bored softnet0 59997 393972 0 0 3 0x14200 bored systqmp 87826 441376 0 0 3 0x14200 bored systq 79658 283482 0 0 3 0x40014200 bored softclock 89594 435851 0 0 3 0x40014200 idle0 1 263155 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive sched_lock &sched_lock r = 0 (0xffffffff82c83820) #0 witness_lock+0x447 #1 schedcpu+0x119 sys/kern/sched_bsd.c:218 #2 timeout_run+0xd0 sys/kern/kern_timeout.c:638 #3 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:685 #4 softclock+0x130 sys/kern/kern_timeout.c:708 #5 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #6 Xsoftclock+0x23 #7 __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] #7 __mp_lock+0x122 sys/kern/kern_lock.c:147 #8 reaper+0x160 sys/kern/kern_exit.c:437 #9 proc_trampoline+0x1c shared mutex timeout r = 0 (0xffffffff82b9be90) #0 witness_lock+0x447 #1 timeout_run+0xbb sys/kern/kern_timeout.c:634 #2 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:685 #3 softclock+0x130 sys/kern/kern_timeout.c:708 #4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x23 #6 __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] #6 __mp_lock+0x122 sys/kern/kern_lock.c:147 #7 reaper+0x160 sys/kern/kern_exit.c:437 #8 proc_trampoline+0x1c Process 66152 (reaper) thread 0xffff8000211ad058 (435167) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82c48a10) #0 witness_lock+0x447 #1 softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88 #2 Xsoftclock+0x23 #3 __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] #3 __mp_lock+0x122 sys/kern/kern_lock.c:147 #4 reaper+0x160 sys/kern/kern_exit.c:437 #5 proc_trampoline+0x1c exclusive sched_lock &sched_lock r = 0 (0xffffffff82c83820) #0 witness_lock+0x447 #1 schedcpu+0x119 sys/kern/sched_bsd.c:218 #2 timeout_run+0xd0 sys/kern/kern_timeout.c:638 #3 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:685 #4 softclock+0x130 sys/kern/kern_timeout.c:708 #5 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #6 Xsoftclock+0x23 #7 __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] #7 __mp_lock+0x122 sys/kern/kern_lock.c:147 #8 reaper+0x160 sys/kern/kern_exit.c:437 #9 proc_trampoline+0x1c shared mutex timeout r = 0 (0xffffffff82b9be90) #0 witness_lock+0x447 #1 timeout_run+0xbb sys/kern/kern_timeout.c:634 #2 softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:685 #3 softclock+0x130 sys/kern/kern_timeout.c:708 #4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 #5 Xsoftclock+0x23 #6 __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] #6 __mp_lock+0x122 sys/kern/kern_lock.c:147 #7 reaper+0x160 sys/kern/kern_exit.c:437 #8 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10201 6410K 6419K 78643K 11292 0 pcb 13 12K 14K 78643K 17 0 rtable 240 6K 7K 78643K 505 0 pf 29 8K 8K 78643K 37 0 ifaddr 44 15K 15K 78643K 62 0 ifgroup 50 2K 2K 78643K 66 0 sysctl 2 0K 2K 78643K 71 0 counters 60 35K 35K 78643K 68 0 ioctlops 0 0K 2K 78643K 43 0 iov 0 0K 20K 78643K 258 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1279 80K 80K 78643K 3201 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 71 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 287 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 26 97K 125K 78643K 3989 0 sigio 0 0K 0K 78643K 23 0 proc 56 78K 115K 78643K 802 0 subproc 104 6K 6K 78643K 156 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 264 0 in_multi 99 7K 7K 78643K 181 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 199 890K 890K 78643K 199 0 exec 0 0K 1K 78643K 1269 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 424 89K 93K 78643K 41259 0 UVM aobj 131 4K 4K 78643K 134 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 99 0 NDP 11 0K 2K 78643K 39 0 temp 74 5868K 5948K 78643K 12770 0 kqueue 12 18K 26K 78643K 273 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 82 0 79 1 0 1 1 0 8 0 rtentry 112 168 0 55 4 0 4 4 0 8 0 unpcb 144 2836 0 2814 22 19 3 6 0 8 1 syncache 296 21 0 21 4 4 0 1 0 8 0 tcpqe 32 286 0 286 2 2 0 1 0 8 0 tcpcb 808 1058 0 1054 42 35 7 14 0 8 6 arp 120 26 0 8 1 0 1 1 0 8 0 ipq 40 5 0 4 2 1 1 1 0 8 0 ipqe 40 48 0 45 2 1 1 1 0 8 0 inpcb 368 2210 0 2202 53 46 7 13 0 8 6 nd6 136 49 0 22 1 0 1 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 690 0 222 30 0 30 30 0 8 0 art_table 32 691 0 222 4 0 4 4 0 8 0 art_node 16 167 0 64 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 284 0 274 1 0 1 1 0 8 0 shmpl 112 131 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 7665 0 6224 91 0 91 91 0 8 0 ffsino 272 7665 0 6224 97 0 97 97 0 8 0 nchpl 144 13010 0 11367 63 0 63 63 0 8 0 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 49578 0 49578 3 2 1 2 0 8 1 percpumem 16 47 0 4 1 0 1 1 0 8 0 kstatmem 264 30 0 8 2 0 2 2 0 8 0 scxspl 216 38367 0 38367 25 24 1 8 0 8 1 plimitpl 152 634 0 608 7 5 2 2 0 8 0 sigapl 424 4274 0 4219 7 0 7 7 0 8 0 futexpl 64 31068 0 31062 1 0 1 1 0 8 0 knotepl 120 341 0 0 11 1 10 11 0 8 0 kqueuepl 216 560 0 552 9 8 1 5 0 8 0 pipepl 320 836 0 807 24 21 3 8 0 8 0 fdescpl 496 4256 0 4219 7 2 5 6 0 8 0 filepl 152 29283 0 29033 50 34 16 19 0 8 6 lockfpl 104 1660 0 1658 1 0 1 1 0 8 0 lockfspl 48 416 0 414 1 0 1 1 0 8 0 sessionpl 144 27 0 11 1 0 1 1 0 8 0 pgrppl 48 37 0 21 1 0 1 1 0 8 0 ucredpl 104 10209 0 10191 1 0 1 1 0 8 0 zombiepl 144 4221 0 4219 1 0 1 1 0 8 0 processpl 1072 4274 0 4219 5 1 4 5 0 8 0 procpl 696 11186 0 11103 10 2 8 9 0 8 0 sosppl 168 51 0 51 6 5 1 1 0 8 1 sockpl 488 5186 0 5153 106 94 12 21 0 8 6 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 3 0 3 3 0 8 0 mcl12k 12288 15 0 0 2 0 2 2 0 8 0 mcl9k 9216 11 0 0 1 0 1 1 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 296 0 0 36 0 36 36 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 964 0 0 58 0 58 58 0 8 0 bufpl 288 11347 0 5032 452 0 452 452 0 8 0 anonpl 24 582721 0 570435 140 52 88 91 0 186 8 amapchunkpl 152 130892 0 129905 57 19 38 45 0 158 0 amappl16 200 15356 0 14986 89 68 21 27 0 8 1 amappl15 192 14 0 13 1 0 1 1 0 8 0 amappl14 184 168 0 154 2 1 1 2 0 8 0 amappl13 176 16 0 15 1 0 1 1 0 8 0 amappl12 168 4946 0 4908 2 0 2 2 0 8 0 amappl11 160 68 0 56 1 0 1 1 0 8 0 amappl10 152 54 0 40 1 0 1 1 0 8 0 amappl9 144 260 0 260 7 6 1 2 0 8 1 amappl8 136 387 0 272 5 0 5 5 0 8 0 amappl7 128 127 0 109 1 0 1 1 0 8 0 amappl6 120 313 0 294 2 1 1 2 0 8 0 amappl5 112 321 0 315 1 0 1 1 0 8 0 amappl4 104 738 0 702 2 0 2 2 0 8 0 amappl3 96 25750 0 25629 6 3 3 4 0 8 0 amappl2 88 4650 0 4570 4 2 2 3 0 8 0 amappl1 80 23083 0 22549 22 9 13 22 0 8 0 amappl 88 40537 0 40255 8 1 7 7 0 92 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 72 133 0 3 3 0 3 3 0 8 0 uaddrrnd 24 4256 0 4219 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4256 0 4219 1 0 1 1 0 8 0 vmmpekpl 168 35280 0 35216 4 0 4 4 0 8 0 vmmpepl 168 265289 0 262669 161 47 114 119 0 357 0 vmsppl 464 4255 0 4219 7 2 5 6 0 8 0 rwobjpl 56 79585 0 72056 112 5 107 108 0 8 0 pdppl 4096 8520 0 8438 202 120 82 96 0 8 0 pvpl 32 1407921 0 1389424 362 184 178 362 0 265 28 pmappl 248 4255 0 4219 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1084 0 206 26 0 26 26 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8279b653) at panic+0x17b sys/kern/subr_prf.c:198 __assert(ffffffff82816c95,ffffffff82762d4d,fb,ffffffff8283e78a) at __assert+0x29 sys/kern/subr_prf.c:157 setrunqueue(ffffffff82bc6ff0,ffff8000212a0b18,50) at setrunqueue+0x2e5 sys/kern/kern_sched.c:249 schedcpu(ffffffff82c83868) at schedcpu+0x28b sys/kern/sched_bsd.c:235 timeout_run(ffffffff82c83868) at timeout_run+0xd0 sys/kern/kern_timeout.c:638 softclock_process_tick_timeout(ffffffff82c83868,0) at softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:685 softclock(0) at softclock+0x130 sys/kern/kern_timeout.c:708 softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x23 __mp_lock(ffffffff82c48808) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c48808) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff8000211ad058) at reaper+0x160 sys/kern/kern_exit.c:437 end trace frame: 0x0, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800020d58ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82c83618) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c83618) at __mp_lock+0x122 sys/kern/kern_lock.c:147 preempt() at preempt+0x37 sys/kern/sched_bsd.c:296 ast(ffff80002636d760) at ast+0x109 mi_ast sys/sys/syscall_mi.h:192 [inline] ast(ffff80002636d760) at ast+0x109 sys/arch/amd64/amd64/trap.c:541 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x78274214b8a0, count: 8 ddb{1}> trace x86_ipi_db(ffff800020d58ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82c83618) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82c83618) at __mp_lock+0x122 sys/kern/kern_lock.c:147 preempt() at preempt+0x37 sys/kern/sched_bsd.c:296 ast(ffff80002636d760) at ast+0x109 mi_ast sys/sys/syscall_mi.h:192 [inline] ast(ffff80002636d760) at ast+0x109 sys/arch/amd64/amd64/trap.c:541 intr_user_exit() at intr_user_exit+0x3c end of kernel end trace frame: 0x78274214b8a0, count: -7