witness: lock order reversal: 1st 0xfffffd806cfde110 vmmaplk (&map->lock) 2nd 0xfffffd80662a9b48 inode (&ip->i_lock) lock order [1] vmmaplk (&map->lock) -> [2] inode (&ip->i_lock) #0 rw_enter+0x122 #1 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #2 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #3 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #4 vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 #5 vndstrategy+0x4ff sys/dev/vnd.c:342 #6 physio+0x2f6 sys/kern/kern_physio.c:162 #7 spec_read+0x155 sys/kern/spec_vnops.c:215 #8 VOP_READ+0x102 sys/kern/vfs_vops.c:227 #9 vn_read+0x17b sys/kern/vfs_vnops.c:369 #10 dofilereadv+0x230 sys/kern/sys_generic.c:252 #11 sys_read+0xa2 sys/kern/sys_generic.c:172 #12 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #12 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 lock order [2] inode (&ip->i_lock) -> [1] vmmaplk (&map->lock) #0 rw_enter_read+0xab sys/kern/kern_rwlock.c:112 #1 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1819 #2 uvm_fault_check+0x49 sys/uvm/uvm_fault.c:672 #3 uvm_fault+0xf5 sys/uvm/uvm_fault.c:600 #4 kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 #5 kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 #6 alltraps_kern_meltdown+0x7b #7 copyout+0x57 #8 ffs_read+0x422 sys/ufs/ffs/ffs_vnops.c:254 #9 VOP_READ+0x102 sys/kern/vfs_vops.c:227 #10 vn_rdwr+0x15b #11 vmcmd_map_readvn+0x142 sys/kern/exec_subr.c:249 #12 exec_process_vmcmds+0xfb sys/kern/exec_subr.c:139 #13 sys_execve+0xbe4 sys/kern/kern_exec.c:468 #14 start_init+0x3c6 sys/kern/init_main.c:714 #15 proc_trampoline+0x10 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(fffffd80662a9b48,9,0) at witness_checkorder+0x1047 rw_enter(fffffd80662a9b38,1) at rw_enter+0x122 rrw_enter(fffffd80662a9b38,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd805fb88988,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd805fb88988,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vn_rdwr(0,fffffd805fb88988,ffff800011a26140,df,0,1,44d03c197685391f,0,ffff800000b3e000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd805eb2c900) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff81f40140,2902,8000,ffffffff8164a270,ffff80002a0d4638) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff80002a0d44a0) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd8079fc4de0,ffff80002a0d4638,0,fffffd807f7d3138) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd805edb1300,ffff80002a0d4638,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff80002a0eef68,4,ffff80002a0d4638,0,ffff80002a0d46f0) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_read(ffff80002a0eef68,ffff80002a0d47a0,ffff80002a0d46f0) at sys_read+0xa2 sys/kern/sys_generic.c:172 syscall(ffff80002a0d47a0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80002a0d47a0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb3a37702420, count: -16 ddb{0}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff80002a0d3f60 rbx 0xfffffd80042c6ac0 rdx 0xffff8000013fd140 rcx 0xffff80002a0eef68 rax 0x3ffff acpi_pdirpa+0x2be70 r8 0xffff80002a0d3e40 r9 0x8080808080808080 r10 0x7e0efee862028bc3 r11 0x67246c47e7b74dea r12 0 r13 0xfffffd8003adde00 r14 0x3 r15 0xffffffff rip 0xffffffff82a55325 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a0d3f50 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=106154 pid=14022 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=0xffff80002a0ef478,0xffff8000ffffd970 process=0xffff8000fffef680 user=0xffff80002a0cf000, vmspace=0xfffffd806cfde018 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 52895 452406 20888 0 2 0 syz-executor 52895 82634 20888 0 3 0x4000080 fsleep syz-executor 14022 188277 4107 0 2 0 syz-executor *14022 106154 4107 0 7 0x4000000 syz-executor 53358 364493 82984 0 2 0 syz-executor 53358 19699 82984 0 2 0x4000000 syz-executor 13174 167840 43167 0 3 0x80 nanoslp syz-executor 13174 191057 43167 0 3 0x4000080 fsleep syz-executor 13174 136699 43167 0 3 0x4000080 sbwait syz-executor 81739 423780 63112 0 3 0x80 nanoslp syz-executor 81739 11363 63112 0 3 0x4000080 nanoslp syz-executor 81739 239026 63112 0 3 0x4000080 fsleep syz-executor 8249 310138 38359 0 3 0x80 nanoslp syz-executor 8249 455615 38359 0 3 0x4000080 ttyin syz-executor 8249 473341 38359 0 3 0x4000080 fsleep syz-executor 8249 36043 38359 0 3 0x4000080 fsleep syz-executor 4107 132081 28303 0 2 0x482 syz-executor 16319 161762 55306 0 3 0x80 nanoslp syz-executor 16319 186774 55306 0 3 0x4000080 lockf syz-executor 16319 368262 55306 0 3 0x4000080 fsleep syz-executor 74458 71355 1 0 3 0x100083 ttyin getty 43167 478032 28303 0 2 0x482 syz-executor 34529 219065 0 0 3 0x14200 bored sosplice 55306 90964 28303 0 3 0x82 nanoslp syz-executor 82984 113731 28303 0 3 0x82 nanoslp syz-executor 20888 348107 28303 0 3 0x82 nanoslp syz-executor 63112 116551 28303 0 2 0x482 syz-executor 31534 471803 28303 0 2 0x482 syz-executor 38359 369481 28303 0 2 0x482 syz-executor 28303 328819 18331 0 3 0x82 kqread syz-executor 18331 157278 2642 0 3 0x10008a sigsusp ksh 2642 166451 16791 0 3 0x98 kqread sshd-session 16791 210195 23740 0 3 0x92 kqread sshd-session 23740 251148 1 0 3 0x88 kqread sshd 94586 277360 11767 74 3 0x1100092 bpf pflogd 11767 299935 1 0 3 0x80 sbwait pflogd 97706 191794 24796 73 3 0x1100090 kqread syslogd 24796 451338 1 0 3 0x100082 sbwait syslogd 45616 522106 1 0 3 0x100080 kqread resolvd 88624 428707 1227 77 3 0x100092 kqread dhcpleased 92314 221640 1227 77 3 0x100092 kqread dhcpleased 1227 58682 1 0 3 0x80 kqread dhcpleased 55861 378364 0 0 3 0x14200 bored smr 70975 190043 0 0 2 0x14200 zerothread 12264 258876 0 0 3 0x14200 aiodoned aiodoned 96549 440089 0 0 2 0x14600 update 84792 142922 0 0 3 0x14200 cleaner cleaner 71408 394611 0 0 7 0x14200 reaper 6182 285824 0 0 3 0x14200 pgdaemon pagedaemon 41927 49836 0 0 3 0x14200 bored viomb 99182 21031 0 0 3 0x40014200 acpi0 acpi0 33412 33552 0 0 3 0x40014200 idle1 97261 391025 0 0 3 0x14200 bored softnet3 48972 522114 0 0 3 0x14200 bored softnet2 80581 29144 0 0 3 0x14200 bored softnet1 31565 365554 0 0 3 0x14200 bored softnet0 49785 201154 0 0 3 0x14200 bored systqmp 54879 105880 0 0 3 0x14200 bored systq 26369 330285 0 0 3 0x14200 tmoslp softclockmp 4451 339886 0 0 3 0x40014200 tmoslp softclock 84395 40934 0 0 3 0x40014200 idle0 1 408399 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 14022 (syz-executor) thread 0xffff80002a0eef68 (106154) shared rwlock vmmaplk r = 0 (0xfffffd806cfde110) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 uvm_vslock_device+0x149 sys/uvm/uvm_glue.c:172 #2 physio+0x277 sys/kern/kern_physio.c:139 #3 spec_read+0x155 sys/kern/spec_vnops.c:215 #4 VOP_READ+0x102 sys/kern/vfs_vops.c:227 #5 vn_read+0x17b sys/kern/vfs_vnops.c:369 #6 dofilereadv+0x230 sys/kern/sys_generic.c:252 #7 sys_read+0xa2 sys/kern/sys_generic.c:172 #8 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #8 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83553710) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 vn_read+0x56 sys/kern/vfs_vnops.c:351 #2 dofilereadv+0x230 sys/kern/sys_generic.c:252 #3 sys_read+0xa2 sys/kern/sys_generic.c:172 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10262 11408K 11730K 166960K 13258 0 pcb 51 17K 21K 166960K 410 0 rtable 222 8K 8K 166960K 623 0 pf 43 19K 21K 166960K 119 0 ifaddr 44 8K 8K 166960K 85 0 ifgroup 64 2K 3K 166960K 133 0 sysctl 4 1K 1K 166960K 7 0 counters 66 36K 36K 166960K 104 0 ioctlops 0 0K 4K 166960K 1687 0 iov 0 0K 16K 166960K 132 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1453 91K 92K 166960K 2553 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 75 0 dirhash 12 2K 3K 166960K 45 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 17 61K 93K 166960K 1319 0 sigio 0 0K 0K 166960K 20 0 proc 72 91K 140K 166960K 705 0 subproc 104 6K 6K 166960K 130 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 134 0 in_multi 99 7K 7K 166960K 178 0 ether_multi 1 0K 0K 166960K 12 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 714 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 257 74K 92K 166960K 13953 0 UVM aobj 40 2K 2K 166960K 47 0 pinsyscall 42 84K 108K 166960K 2452 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 58 0 NDP 15 0K 2K 166960K 56 0 temp 59 6823K 6898K 166960K 46616 0 kqueue 14 22K 31K 166960K 195 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 120 104 0 101 1 0 1 1 0 8 0 rtentry 112 198 0 100 4 0 4 4 0 8 0 unpcb 144 839 0 817 7 6 1 4 0 8 0 syncache 336 3 0 3 2 2 0 1 0 8 0 tcpcb 808 320 0 315 4 3 1 4 0 8 0 arp 120 27 0 11 1 0 1 1 0 8 0 inpcb 336 1537 0 1493 27 23 4 12 0 8 0 nd6 136 37 0 9 1 0 1 1 0 8 0 pkpcb 40 4 0 4 3 3 0 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1168 7 0 7 2 2 0 1 0 8 0 pfstscr 40 5 0 3 1 0 1 1 0 8 0 pffrag 232 5 0 0 1 0 1 1 0 482 0 pffrnode 88 5 0 0 1 0 1 1 0 8 0 pffrent 40 6 0 1 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 pfstitem 24 105 0 25 1 0 1 1 0 8 0 pfstkey 128 110 0 32 3 0 3 3 0 8 0 pfstate 376 104 0 28 8 0 8 8 0 8 0 pfrule 1344 35 0 23 2 0 2 2 0 8 0 art_heap8 4096 4 0 1 4 1 3 4 0 8 0 art_heap4 256 777 0 321 33 3 30 31 0 8 0 art_table 32 781 0 322 4 0 4 4 0 8 0 art_node 16 163 0 77 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 3 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 73 0 63 1 0 1 1 0 8 0 shmpl 112 44 0 7 2 0 2 2 0 8 0 dirhash 1024 40 0 23 4 1 3 4 0 8 0 dino2pl 256 3710 0 2209 95 0 95 95 0 8 0 ffsino 272 3710 0 2209 102 0 102 102 0 8 0 nchpl 144 5513 0 3810 64 0 64 64 0 8 0 uvmvnodes 80 4602 0 0 94 0 94 94 0 8 0 vnodes 216 4602 0 0 256 0 256 256 0 8 0 namei 1024 20317 0 20317 6 5 1 2 0 8 1 percpumem 16 66 0 19 1 0 1 1 0 8 0 kstatmem 264 64 0 38 2 0 2 2 0 8 0 scsiplug 72 6 0 6 3 3 0 1 0 8 0 scxspl 216 18211 0 18211 12 11 1 8 1 8 1 plimitpl 152 218 0 200 1 0 1 1 0 8 0 sigapl 424 1639 0 1588 9 2 7 9 0 8 0 futexpl 64 18124 0 18118 1 0 1 1 0 8 0 knotepl 120 580 0 0 17 0 17 17 0 8 0 kqueuepl 216 397 0 387 7 6 1 5 0 8 0 pipepl 320 335 0 308 3 0 3 3 0 8 0 fdescpl 496 1598 0 1567 5 0 5 5 0 8 0 filepl 152 10867 0 10569 27 15 12 15 0 8 0 lockfpl 104 480 0 476 1 0 1 1 0 8 0 lockfspl 48 185 0 182 1 0 1 1 0 8 0 sessionpl 144 27 0 18 1 0 1 1 0 8 0 pgrppl 48 56 0 39 1 0 1 1 0 8 0 ucredpl 104 1561 0 1547 1 0 1 1 0 8 0 zombiepl 144 1589 0 1588 3 2 1 1 0 8 0 processpl 1160 1639 0 1588 7 2 5 6 0 8 0 procpl 648 3562 0 3499 8 2 6 8 0 8 0 srpgc 96 8 0 8 3 2 1 1 0 8 1 sosppl 168 8 0 8 4 4 0 1 0 8 0 sockpl 664 2500 0 2431 28 22 6 14 0 8 0 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 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 142 0 0 18 0 18 18 0 8 0 mcl2k 2048 47 0 0 5 0 5 5 0 8 0 mtagpl 96 31 0 0 1 0 1 1 0 8 0 mbufpl 256 224 0 0 14 0 14 14 0 8 0 bufpl 280 6521 0 346 442 0 442 442 0 8 0 anonpl 24 335348 0 329266 91 47 44 74 0 185 0 amapchunkpl 152 46899 0 46230 48 20 28 39 0 158 0 amappl16 200 9453 0 9384 41 34 7 20 0 8 0 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 127 0 115 1 0 1 1 0 8 0 amappl13 176 15 0 15 1 1 0 1 0 8 0 amappl12 168 2315 0 2284 3 1 2 2 0 8 0 amappl11 160 61 0 47 1 0 1 1 0 8 0 amappl10 152 19 0 18 2 1 1 1 0 8 0 amappl9 144 134 0 134 1 1 0 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 127 0 115 1 0 1 1 0 8 0 amappl6 120 195 0 193 1 0 1 1 0 8 0 amappl5 112 156 0 144 1 0 1 1 0 8 0 amappl4 104 326 0 305 1 0 1 1 0 8 0 amappl3 96 8521 0 8413 3 0 3 3 0 8 0 amappl2 88 1900 0 1811 3 0 3 3 0 8 0 amappl1 80 11194 0 10636 15 3 12 14 0 8 0 amappl 88 13469 0 13273 5 0 5 5 0 92 0 dma65536 65536 2 0 2 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 66 0 65 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 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 46 0 7 1 0 1 1 0 8 0 uaddrrnd 24 1598 0 1567 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1598 0 1567 1 0 1 1 0 8 0 vmmpekpl 168 13937 0 13890 3 0 3 3 0 8 0 vmmpepl 168 106481 0 104546 110 22 88 99 0 357 0 vmsppl 448 1597 0 1567 6 2 4 5 0 8 0 rwobjpl 56 37125 0 31478 83 2 81 81 0 8 0 pdppl 4096 3203 0 3134 117 44 73 85 0 8 4 pvpl 32 18653 0 0 151 0 151 151 0 265 0 pmappl 248 1597 0 1567 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 447 0 90 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 witness_checkorder(fffffd80662a9b48,9,0) at witness_checkorder+0x1047 rw_enter(fffffd80662a9b38,1) at rw_enter+0x122 rrw_enter(fffffd80662a9b38,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd805fb88988,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd805fb88988,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vn_rdwr(0,fffffd805fb88988,ffff800011a26140,df,0,1,44d03c197685391f,0,ffff800000b3e000,0) at vn_rdwr+0xd1 sys/kern/vfs_vnops.c:320 vndstrategy(fffffd805eb2c900) at vndstrategy+0x4ff sys/dev/vnd.c:342 physio(ffffffff81f40140,2902,8000,ffffffff8164a270,ffff80002a0d4638) at physio+0x2f6 sys/kern/kern_physio.c:162 spec_read(ffff80002a0d44a0) at spec_read+0x155 sys/kern/spec_vnops.c:215 VOP_READ(fffffd8079fc4de0,ffff80002a0d4638,0,fffffd807f7d3138) at VOP_READ+0x102 sys/kern/vfs_vops.c:227 vn_read(fffffd805edb1300,ffff80002a0d4638,0) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff80002a0eef68,4,ffff80002a0d4638,0,ffff80002a0d46f0) at dofilereadv+0x230 sys/kern/sys_generic.c:252 sys_read(ffff80002a0eef68,ffff80002a0d47a0,ffff80002a0d46f0) at sys_read+0xa2 sys/kern/sys_generic.c:172 syscall(ffff80002a0d47a0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80002a0d47a0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb3a37702420, count: -16 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp 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 __mp_lock(ffffffff83553508) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83553508) at __mp_lock+0x192 sys/kern/kern_lock.c:144 reaper(ffff800029fd8f38) at reaper+0x24b sys/kern/kern_exit.c:478 end trace frame: 0x0, count: -5