uvm_fault(0xffff800000d84000, 0x8, 0, 1) -> e kernel: page fault trap, code=0 Stopped at knote_processfork+0x287: movq 0x8(%r15),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND 491474 64218 0 0 0 1 syz-executor *246141 28945 0 0 0x4000000 0 syz-executor knote_processfork(ffffffff85d370e0,68d3) at knote_processfork+0x287 sys/kern/kern_event.c:2246 fork1(ffffffff85d36d80,f0,ffffffff82562cd0,0,0,ffff80003bcbf940) at fork1+0x1225 sys/kern/kern_fork.c:511 kthread_create(ffffffff82562cd0,0,ffffffff85d12580,ffffffff84999780) at kthread_create+0xa8 sys/kern/kern_kthread.c:61 sys_acct(ffff800045ff4020,ffff80003bcbfd20,ffff80003bcbfc80) at sys_acct+0x35e acct_start sys/kern/kern_acct.c:300 [inline] sys_acct(ffff800045ff4020,ffff80003bcbfd20,ffff80003bcbfc80) at sys_acct+0x35e sys/kern/kern_acct.c:151 syscall(ffff80003bcbfd20) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bcbfd20) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdeecd618fc0, count: 9 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(0xffff800000d84000, 0x8, 0, 1) -> e ddb{0}> show kasan kasan: no report recorded this boot ddb{0}> trace knote_processfork(ffffffff85d370e0,68d3) at knote_processfork+0x287 sys/kern/kern_event.c:2246 fork1(ffffffff85d36d80,f0,ffffffff82562cd0,0,0,ffff80003bcbf940) at fork1+0x1225 sys/kern/kern_fork.c:511 kthread_create(ffffffff82562cd0,0,ffffffff85d12580,ffffffff84999780) at kthread_create+0xa8 sys/kern/kern_kthread.c:61 sys_acct(ffff800045ff4020,ffff80003bcbfd20,ffff80003bcbfc80) at sys_acct+0x35e acct_start sys/kern/kern_acct.c:300 [inline] sys_acct(ffff800045ff4020,ffff80003bcbfd20,ffff80003bcbfc80) at sys_acct+0x35e sys/kern/kern_acct.c:151 syscall(ffff80003bcbfd20) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bcbfd20) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdeecd618fc0, count: -6 ddb{0}> show registers rdi 0x8 rsi 0x1 rbp 0xffff80003bcbf810 rbx 0xffff8000017c3bea rdx 0 rcx 0xffffffff84f15ff0 cpu_info_full_primary+0x1ff0 rax 0x1 r8 0x8 r9 0x1 r10 0 r11 0xffffffff8301f780 filt_proc r12 0xffff80003bcbf6c0 r13 0xffff80003bcbf6c0 r14 0xffffffff85d37220 process0+0x140 r15 0 rip 0xffffffff8302db97 knote_processfork+0x287 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff80003bcbf660 ss 0x10 knote_processfork+0x287: movq 0x8(%r15),%r14 ddb{0}> show proc PROC (syz-executor) tid=246141 pid=28945 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800045ff47e8,0xffff800045ffcd20 process=0xffff800045ff89b8 user=0xffff80003bcb4000, vmspace=0xffff800000d84000 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 26835 132796 0 0 2 0x14000 0x200 swapper 19048 7188 17470 0 2 0 0 syz-executor 64218 491474 88746 0 7 0 0 syz-executor 28945 63576 77697 0 2 0 0 syz-executor *28945 246141 77697 0 7 0 0x4000000 syz-executor 42030 151630 99513 0 2 0x2 0 arp 53131 403007 47079 0 2 0 0 syz-executor 53131 462598 47079 0 3 0 0x4000080 kqread syz-executor 53131 492637 47079 0 3 0 0x4000080 kqread syz-executor 99513 116593 54512 0 3 0x100002 0x88 sigsusp sh 96029 354726 62843 0 2 0 0 syz-executor 96029 411442 62843 0 3 0 0x4000080 kqread syz-executor 96029 285206 62843 0 3 0 0x4000080 fsleep syz-executor 96029 418792 62843 0 3 0 0x4000080 fsleep syz-executor 99430 198084 33429 0 3 0 0x80 nanoslp syz-executor 99430 203650 33429 0 3 0 0x4000080 fsleep syz-executor 99430 79376 33429 0 3 0 0x4000080 fsleep syz-executor 99430 431328 33429 0 3 0 0x4000080 kqread syz-executor 54512 146489 17470 0 3 0x2 0x80 wait syz-executor 62843 76822 17470 0 3 0x2 0x80 nanoslp syz-executor 39756 418779 0 0 3 0x14000 0x280 nfsidl nfsio 94842 405223 0 0 3 0x14000 0x280 nfsidl nfsio 9231 508952 0 0 3 0x14000 0x280 nfsidl nfsio 46890 368328 0 0 3 0x14000 0x280 nfsidl nfsio 35171 459766 0 0 3 0x14000 0x280 nfsidl nfsio 65808 41437 0 0 3 0x14000 0x280 nfsidl nfsio 96278 15561 0 0 3 0x14000 0x280 nfsidl nfsio 22676 486892 0 0 3 0x14000 0x280 nfsidl nfsio 96311 341980 0 0 3 0x14000 0x280 nfsidl nfsio 41609 14397 0 0 3 0x14000 0x280 nfsidl nfsio 71279 228836 0 0 3 0x14000 0x280 nfsidl nfsio 35971 202414 0 0 3 0x14000 0x280 nfsidl nfsio 64925 323497 0 0 3 0x14000 0x280 nfsidl nfsio 22761 104244 0 0 3 0x14000 0x280 nfsidl nfsio 88930 159257 0 0 3 0x14000 0x280 nfsidl nfsio 91083 115036 0 0 3 0x14000 0x280 nfsidl nfsio 85285 79299 0 0 3 0x14000 0x280 nfsidl nfsio 34141 322192 0 0 3 0x14000 0x280 nfsidl nfsio 3425 327221 0 0 3 0x14000 0x280 nfsidl nfsio 5629 206331 0 0 3 0x14000 0x280 nfsidl nfsio 77697 188647 17470 0 3 0x2 0x80 nanoslp syz-executor 53536 8211 1 0 3 0x100003 0x80 ttyin getty 1479 63736 17470 0 2 0x2 0xc80 syz-executor 47079 428296 17470 0 3 0x2 0x80 nanoslp syz-executor 33429 491580 17470 0 3 0x2 0x80 nanoslp syz-executor 88746 29547 17470 0 2 0x2 0xc80 syz-executor 17470 59406 87863 0 2 0x2 0 syz-executor 87863 6377 94582 0 3 0x100002 0x88 sigsusp ksh 94582 470266 71476 0 3 0x10 0x88 kqread sshd-session 71476 440084 2047 0 3 0x12 0x80 kqread sshd-session 2047 337197 1 0 3 0 0x88 kqread sshd 62894 350598 43689 74 3 0x1100012 0x80 bpf pflogd 43689 511615 1 0 3 0 0x80 sbwait pflogd 78153 513951 10529 73 3 0x1100010 0x80 kqread syslogd 10529 517118 1 0 3 0x100002 0x80 sbwait syslogd 39586 54493 1 0 3 0x100000 0x80 kqread resolvd 7539 238283 17045 77 3 0x100012 0x80 kqread dhcpleased 56849 334765 17045 77 3 0x100012 0x80 kqread dhcpleased 17045 168867 1 0 3 0 0x80 kqread dhcpleased 26860 163548 0 0 3 0x14000 0x200 bored smr 66265 250734 0 0 2 0x14000 0x200 zerothread 13348 278708 0 0 3 0x14000 0x200 aiodoned aiodoned 98067 408532 0 0 3 0x14000 0x200 syncer update 5972 237206 0 0 3 0x14000 0x200 cleaner cleaner 44720 80806 0 0 3 0x14000 0x200 reaper reaper 21661 184703 0 0 3 0x14000 0x200 pgdaemon pagedaemon 42265 516147 0 0 3 0x14000 0x200 bored viomb 60404 323808 0 0 3 0x14000 0x40000200 acpi0 acpi0 16470 345220 0 0 3 0x14000 0x40000200 idle1 73389 66004 0 0 3 0x14000 0x200 bored softnet1 93677 493126 0 0 2 0x14000 0x200 softnet0 15791 114563 0 0 3 0x14000 0x200 bored systqmp 8915 158524 0 0 3 0x14000 0x200 bored systq 36824 48424 0 0 3 0x14000 0x200 tmoslp softclockmp 22128 302399 0 0 3 0x14000 0x40000200 tmoslp softclock 87094 205371 0 0 3 0x14000 0x40000200 idle0 1 293426 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pr->ps_mtx r = 0 (0xffffffff85d371f8) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x683 sys/kern/kern_lock.c:487 #2 knote_processfork+0x666 sys/kern/kern_event.c:-1 #3 fork1+0x1225 sys/kern/kern_fork.c:511 #4 kthread_create+0xa8 sys/kern/kern_kthread.c:61 #5 sys_acct+0x35e acct_start sys/kern/kern_acct.c:300 [inline] #5 sys_acct+0x35e sys/kern/kern_acct.c:151 #6 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #7 Xsyscall+0x128 Process 28945 (syz-executor) thread 0xffff800045ff4020 (246141) exclusive rwlock acctlk r = 0 (0xffffffff850f4738) #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 sys_acct+0x1be sys/kern/kern_acct.c:137 #3 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #4 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff85cda380) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 syscall+0x1048 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0x1048 sys/arch/amd64/amd64/trap.c:791 #2 Xsyscall+0x128 exclusive mutex &pr->ps_mtx r = 0 (0xffffffff85d371f8) #0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x632 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x683 sys/kern/kern_lock.c:487 #2 knote_processfork+0x666 sys/kern/kern_event.c:-1 #3 fork1+0x1225 sys/kern/kern_fork.c:511 #4 kthread_create+0xa8 sys/kern/kern_kthread.c:61 #5 sys_acct+0x35e acct_start sys/kern/kern_acct.c:300 [inline] #5 sys_acct+0x35e sys/kern/kern_acct.c:151 #6 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11070 12251K 12434K 166960K 12391 0 pcb 17 24K 24K 166960K 39 0 rtable 191 19K 22K 166960K 616 0 pf 37 23K 28K 166960K 128 0 ifaddr 35 9K 12K 166960K 94 0 ifgroup 55 2K 2K 166960K 149 0 sysctl 4 1K 13K 166960K 9 0 counters 70 42K 43K 166960K 114 0 ioctlops 0 0K 4K 166960K 1533 0 iov 0 0K 8K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1303 84K 84K 166960K 1750 0 UFS quota 1 36K 36K 166960K 1 0 UFS mount 5 44K 44K 166960K 5 0 shm 2 2K 6K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 15 1K 1K 166960K 15 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 66K 97K 166960K 582 0 sigio 0 0K 0K 166960K 2 0 proc 73 128K 193K 166960K 811 0 subproc 72 9K 9K 166960K 144 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 20K 20K 166960K 1 0 ip_moptions 0 0K 0K 166960K 20 0 in_multi 67 5K 7K 166960K 189 0 ether_multi 1 0K 0K 166960K 1 0 mrt 2 0K 0K 166960K 21 0 ISOFS mount 1 36K 36K 166960K 1 0 MSDOSFS mount 1 20K 20K 166960K 1 0 ttys 91 627K 627K 166960K 91 0 exec 0 0K 2K 166960K 485 0 fusefs mount 1 36K 36K 166960K 1 0 tdb 3 1K 1K 166960K 3 0 VM swap 14 124K 124K 166960K 15 0 UVM amap 238 271K 293K 166960K 6455 0 UVM aobj 7 4K 8K 166960K 12 0 pinsyscall 1069 1875K 1875K 166960K 1945 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 11 0 NDP 12 0K 2K 166960K 65 0 temp 36 9162K 9191K 166960K 8364 0 kqueue 15 45K 57K 166960K 69 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 48 0 45 1 0 1 1 0 8 0 rtentry 176 199 0 119 6 0 6 6 0 8 0 unpcb 144 848 0 787 8 1 7 7 0 8 4 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 736 27 0 23 1 0 1 1 0 8 0 arp 136 34 0 21 1 0 1 1 0 8 0 inpcb 328 216 0 209 1 0 1 1 0 8 0 ip6q 80 2 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 0 1 0 1 1 0 8 0 nd6 152 47 0 32 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 16 0 8 1 0 1 1 0 8 0 ppxss 1192 2 0 2 1 1 0 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 8 0 5 1 0 1 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 30 0 22 1 0 1 1 0 8 0 pfstkey 128 30 0 22 1 0 1 1 0 8 0 pfstate 448 30 0 22 4 1 3 4 0 8 1 pfrule 1360 31 0 23 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 831 0 499 30 5 25 30 0 8 1 art_table 40 832 0 499 5 0 5 5 0 8 0 art_node 32 199 0 126 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 72 13 0 0 1 0 1 1 0 8 0 shmpl 112 9 0 5 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2216 0 731 94 0 94 94 0 8 0 ffsino 296 2216 0 731 115 0 115 115 0 8 0 nchpl 144 2816 0 1081 65 0 65 65 0 8 0 vnodes 216 2499 0 0 139 0 139 139 0 8 0 namei 1024 10273 0 10273 4 3 1 3 0 8 1 percpumem 16 73 0 22 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 73 0 44 3 0 3 3 0 8 0 scxspl 216 10643 0 10643 7 3 4 4 1 8 4 plimitpl 152 162 0 143 1 0 1 1 0 8 0 sigapl 424 906 0 836 8 0 8 8 0 8 0 knotepl 120 184 0 0 6 0 6 6 0 8 0 kqueuepl 224 93 0 78 2 1 1 2 0 8 0 pipepl 344 192 0 162 3 0 3 3 0 8 0 fdescpl 528 869 0 836 3 0 3 3 0 8 0 filepl 160 4167 0 3894 18 1 17 18 0 8 4 lockfpl 104 108 0 105 1 0 1 1 0 8 0 lockfspl 48 51 0 48 1 0 1 1 0 8 0 sessionpl 144 50 0 41 1 0 1 1 0 8 0 pgrppl 48 71 0 54 1 0 1 1 0 8 0 ucredpl 104 648 0 635 1 0 1 1 0 8 0 zombiepl 144 838 0 836 1 0 1 1 0 8 0 processpl 1232 906 0 836 6 0 6 6 0 8 0 procpl 664 1386 0 1307 8 0 8 8 0 8 1 sosppl 176 3 0 3 1 1 0 1 0 8 0 sockpl 752 1114 0 1043 40 20 20 20 0 8 12 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k128 9344 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 9 0 0 2 0 2 2 0 8 0 mcl4k 4096 131 0 0 17 0 17 17 0 8 0 mcl2k 2048 21 0 0 3 0 3 3 0 8 0 mextrefs 64 23 0 0 1 0 1 1 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 249 0 0 16 0 16 16 0 8 0 bufpl 272 3630 0 108 235 0 235 235 0 8 0 anonpl 32 7586 0 0 63 1 62 62 0 222 0 amapchunkpl 152 19753 0 19269 27 2 25 26 0 158 5 amappl16 200 2564 0 2538 29 15 14 16 0 8 11 amappl15 192 5 0 5 3 2 1 1 0 8 1 amappl14 184 524 0 522 1 0 1 1 0 8 0 amappl13 176 140 0 128 1 0 1 1 0 8 0 amappl12 168 1148 0 1118 2 0 2 2 0 8 0 amappl11 160 51 0 51 2 1 1 1 0 8 1 amappl10 152 67 0 52 1 0 1 1 0 8 0 amappl9 144 277 0 277 1 1 0 1 0 8 0 amappl8 136 171 0 168 1 0 1 1 0 8 0 amappl7 128 193 0 178 1 0 1 1 0 8 0 amappl6 120 264 0 262 1 0 1 1 0 8 0 amappl5 112 102 0 92 1 0 1 1 0 8 0 amappl4 104 322 0 303 1 0 1 1 0 8 0 amappl3 96 3582 0 3484 3 0 3 3 0 8 0 amappl2 88 1052 0 971 2 0 2 2 0 8 0 amappl1 80 12797 0 12166 16 2 14 16 0 8 0 amappl 88 5571 0 5408 5 0 5 5 0 92 0 uvmvnodes 80 110 0 0 3 0 3 3 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 11 0 5 1 0 1 1 0 8 0 uaddrrnd 24 869 0 836 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 869 0 836 1 0 1 1 0 8 0 vmmpekpl 168 8667 0 8631 3 0 3 3 0 8 0 vmmpepl 168 63465 0 61457 98 10 88 96 0 357 0 vmsppl 488 868 0 836 5 0 5 5 0 8 0 rwobjpl 80 20200 0 19111 30 3 27 27 0 8 3 pdppl 4096 1746 0 1672 118 44 74 88 0 8 0 pvpl 32 17962 0 0 146 1 145 145 0 265 0 pmappl 256 868 0 836 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 120 543 0 59 15 0 15 15 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace knote_processfork(ffffffff85d370e0,68d3) at knote_processfork+0x287 sys/kern/kern_event.c:2246 fork1(ffffffff85d36d80,f0,ffffffff82562cd0,0,0,ffff80003bcbf940) at fork1+0x1225 sys/kern/kern_fork.c:511 kthread_create(ffffffff82562cd0,0,ffffffff85d12580,ffffffff84999780) at kthread_create+0xa8 sys/kern/kern_kthread.c:61 sys_acct(ffff800045ff4020,ffff80003bcbfd20,ffff80003bcbfc80) at sys_acct+0x35e acct_start sys/kern/kern_acct.c:300 [inline] sys_acct(ffff800045ff4020,ffff80003bcbfd20,ffff80003bcbfc80) at sys_acct+0x35e sys/kern/kern_acct.c:151 syscall(ffff80003bcbfd20) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003bcbfd20) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdeecd618fc0, count: -6 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 __mp_lock(ffffffff85cd9b80) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85cd9b80) at __mp_lock+0x272 sys/kern/kern_lock.c:173 end trace frame: 0x0, count: 11 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 __mp_lock(ffffffff85cd9b80) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff85cd9b80) at __mp_lock+0x272 sys/kern/kern_lock.c:173 end trace frame: 0x0, count: -4