*cpu1: uvm_fault(0xfffff5806cdf3b90, 0x98, 0, 1) -> e ddb{0}> show kasan No such command ddb{0}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x79185dad9d00, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c40b7f0 rbx 0 rdx 0 rcx 0xffff80003c3d7260 rax 0x3a r8 0xffff80003c40b720 r9 0 r10 0x476c4166c92ea829 r11 0x25653dde4ed64da2 r12 0 r13 0 r14 0xffff80003c3d7260 r15 0 rip 0xffffffff826b93ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80003c40b770 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=61939 pid=98067 tcnt=2 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c3d6fc8,0xffff80003c3d6048 process=0xffff80003c462b78 user=0xffff80003c406000, vmspace=0xfffff5806cdf3208 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND *98067 61939 37936 0 7 0 0 syz-executor 98067 223011 37936 0 3 0 0x4000080 fsleep syz-executor 630 111057 95063 0 2 0 0 syz-executor 630 414072 95063 0 3 0 0x4000080 fsleep syz-executor 630 138767 95063 0 7 0 0x4000000 syz-executor 630 72773 95063 0 2 0 0x4000000 syz-executor 16286 236410 55336 0 2 0 0 syz-executor 16286 361912 55336 0 3 0 0x4000080 fsleep syz-executor 75648 238439 17692 0 3 0 0x80 nanoslp syz-executor 75648 111517 17692 0 3 0 0x4000080 sbwait syz-executor 75648 231841 17692 0 3 0 0x4000080 fsleep syz-executor 61405 470905 64421 0 3 0 0x80 nanoslp syz-executor 61405 48863 64421 0 3 0 0x4000080 kqsel syz-executor 61405 4523 64421 0 3 0 0x4000080 fsleep syz-executor 90931 477467 99751 0 3 0 0x80 nanoslp syz-executor 90931 352888 99751 0 3 0 0x4000080 kqsel syz-executor 90931 379605 99751 0 3 0 0x4000080 dtread syz-executor 90931 206845 99751 0 3 0 0x4000080 fsleep syz-executor 434 218228 78456 60929 3 0x10 0x80 nanoslp syz-executor 434 102177 78456 60929 3 0x10 0x4000080 fsleep syz-executor 434 87862 78456 60929 3 0x10 0x4000080 nanoslp syz-executor 434 398179 78456 60929 3 0x10 0x4000080 fsleep syz-executor 7766 54248 0 0 3 0x14000 0x200 acct acct 49790 151315 1 0 3 0x100003 0x80 ttyin getty 29136 322195 0 0 3 0x14000 0x280 nfsidl nfsio 2969 385098 0 0 3 0x14000 0x280 nfsidl nfsio 84796 211810 0 0 3 0x14000 0x280 nfsidl nfsio 44490 245785 0 0 3 0x14000 0x280 nfsidl nfsio 33635 273249 0 0 3 0x14000 0x280 nfsidl nfsio 89891 291020 0 0 3 0x14000 0x280 nfsidl nfsio 43842 237963 0 0 3 0x14000 0x280 nfsidl nfsio 44614 151420 0 0 3 0x14000 0x280 nfsidl nfsio 35394 293366 0 0 3 0x14000 0x280 nfsidl nfsio 90191 94602 0 0 3 0x14000 0x280 nfsidl nfsio 234 255577 0 0 3 0x14000 0x280 nfsidl nfsio 87145 424576 0 0 3 0x14000 0x280 nfsidl nfsio 46894 364224 0 0 3 0x14000 0x280 nfsidl nfsio 23084 67572 0 0 3 0x14000 0x280 nfsidl nfsio 65214 285038 0 0 3 0x14000 0x280 nfsidl nfsio 86965 478812 0 0 3 0x14000 0x280 nfsidl nfsio 65196 82054 0 0 3 0x14000 0x280 nfsidl nfsio 24261 138046 0 0 3 0x14000 0x280 nfsidl nfsio 57306 424268 0 0 3 0x14000 0x280 nfsidl nfsio 12974 413165 0 0 3 0x14000 0x280 nfsidl nfsio 78456 481044 80872 0 3 0x2 0x80 nanoslp syz-executor 95063 390141 80872 0 3 0x2 0x80 nanoslp syz-executor 64421 476765 80872 0 3 0x2 0x80 nanoslp syz-executor 55336 521881 80872 0 3 0x2 0x80 nanoslp syz-executor 37936 249235 80872 0 3 0x2 0x80 nanoslp syz-executor 99751 82568 80872 0 3 0x2 0x80 nanoslp syz-executor 17692 407545 80872 0 3 0x2 0x80 nanoslp syz-executor 15981 34492 80872 0 2 0x2 0 syz-executor 80872 484512 9342 0 3 0x2 0x80 kqread syz-executor 9342 82882 66732 0 3 0x100002 0x88 sigsusp ksh 66732 469950 13802 0 3 0x10 0x88 kqread sshd-session 13802 423260 10759 0 3 0x12 0x80 kqread sshd-session 10759 28259 1 0 3 0 0x88 kqread sshd 27869 119372 57181 74 3 0x1100012 0x80 bpf pflogd 57181 416092 1 0 3 0 0x80 sbwait pflogd 48321 71850 54984 73 3 0x1100010 0x80 kqread syslogd 54984 152562 1 0 3 0x100002 0x80 sbwait syslogd 67610 113315 1 0 3 0x100000 0x80 kqread resolvd 4243 189328 52897 77 3 0x100012 0x80 kqread dhcpleased 85820 292418 52897 77 3 0x100012 0x80 kqread dhcpleased 52897 276130 1 0 3 0 0x80 kqread dhcpleased 37388 267087 0 0 3 0x14000 0x200 bored smr 46832 93474 0 0 3 0x14000 0x200 pgzero zerothread 30704 472357 0 0 3 0x14000 0x200 aiodoned aiodoned 37193 233607 0 0 3 0x14000 0x200 syncer update 98815 408510 0 0 3 0x14000 0x200 cleaner cleaner 36879 197520 0 0 3 0x14000 0x200 reaper reaper 93303 384537 0 0 3 0x14000 0x200 pgdaemon pagedaemon 16342 321491 0 0 3 0x14000 0x200 bored viomb 76770 55881 0 0 3 0x14000 0x40000200 acpi0 acpi0 71366 422274 0 0 3 0x14000 0x40000200 idle1 6455 171644 0 0 3 0x14000 0x200 bored softnet1 11128 370534 0 0 3 0x14000 0x200 bored softnet0 66819 74272 0 0 3 0x14000 0x200 bored systqmp 10562 409091 0 0 3 0x14000 0x200 bored systq 84530 285003 0 0 3 0x14000 0x200 tmoslp softclockmp 23980 192696 0 0 3 0x14000 0x40000200 tmoslp softclock 25912 444007 0 0 3 0x14000 0x40000200 idle0 1 46188 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 &pmap->pm_mtx r = 0 (0xfffff5806cea3010) #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+0x4b4 sys/kern/kern_lock.c:487 #2 pmap_write_protect+0x80 rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #2 pmap_write_protect+0x80 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:441 [inline] #2 pmap_write_protect+0x80 sys/arch/amd64/amd64/pmap.c:2173 #3 uvm_map_protect+0xb95 pmap_protect sys/arch/amd64/compile/SYZKALLER/obj/machine/pmap.h:481 [inline] #3 uvm_map_protect+0xb95 sys/uvm/uvm_map.c:3202 #4 sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 Process 98067 (syz-executor) thread 0xffff80003c3d7260 (61939) exclusive rwlock uobjlk r = 0 (0xfffff5806d902838) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 uvm_map_protect+0xb36 sys/uvm/uvm_map.c:3202 #3 sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #5 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffff5806cdf3308) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5170 #3 uvm_map_protect+0xe0 sys/uvm/uvm_map.c:3075 #4 sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 exclusive mutex &pmap->pm_mtx r = 0 (0xfffff5806cea3010) #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+0x4b4 sys/kern/kern_lock.c:487 #2 pmap_write_protect+0x80 rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #2 pmap_write_protect+0x80 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:441 [inline] #2 pmap_write_protect+0x80 sys/arch/amd64/amd64/pmap.c:2173 #3 uvm_map_protect+0xb95 pmap_protect sys/arch/amd64/compile/SYZKALLER/obj/machine/pmap.h:481 [inline] #3 uvm_map_protect+0xb95 sys/uvm/uvm_map.c:3202 #4 sys_mprotect+0x351 sys/uvm/uvm_mmap.c:590 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #6 Xsyscall+0x128 Process 630 (syz-executor) thread 0xffff80003c3d6038 (138767) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a7a440) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11075 12181K 12353K 166960K 12442 0 pcb 17 12K 12K 166960K 85 0 rtable 229 8K 8K 166960K 395 0 pf 39 18K 21K 166960K 87 0 ifaddr 43 7K 8K 166960K 58 0 ifgroup 60 2K 2K 166960K 85 0 sysctl 3 1K 9K 166960K 7 0 counters 72 37K 37K 166960K 100 0 ioctlops 0 0K 4K 166960K 1578 0 iov 0 0K 12K 166960K 9 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1355 85K 86K 166960K 1690 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 90 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 17 61K 236K 166960K 433 0 sigio 0 0K 0K 166960K 5 0 proc 72 115K 164K 166960K 591 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 42 0 in_multi 98 6K 6K 166960K 113 0 ether_multi 1 0K 0K 166960K 3 0 mrt 2 0K 0K 166960K 13 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 420 0 fusefs mount 1 32K 32K 166960K 1 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 244 159K 169K 166960K 5562 0 UVM aobj 10 2K 2K 166960K 11 0 pinsyscall 42 84K 103K 166960K 1590 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 16 0 NDP 13 0K 2K 166960K 38 0 temp 44 9119K 9178K 166960K 16647 0 kqueue 14 22K 29K 166960K 74 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 49 0 46 1 0 1 1 0 8 0 rtentry 176 116 0 16 6 0 6 6 0 8 0 unpcb 144 126 0 106 1 0 1 1 0 8 0 syncache 336 8 0 8 2 1 1 1 0 8 1 tcpcb 736 88 0 82 1 0 1 1 0 8 0 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 357 0 346 6 3 3 4 0 8 1 nd6 152 27 0 0 2 0 2 2 0 8 0 pkpcb 40 5 0 5 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 11 0 11 2 1 1 1 0 8 1 pppxif 1576 1 0 1 1 1 0 1 0 8 0 pfstscr 40 2 0 0 1 0 1 1 0 8 0 pffrag 232 5 0 1 1 0 1 1 0 482 0 pffrnode 88 5 0 1 1 0 1 1 0 8 0 pffrent 40 8 0 3 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 pftag 88 3 0 0 1 0 1 1 0 8 0 pfqueue 320 2 0 0 1 0 1 1 0 8 0 pfstitem 24 60 0 1 1 0 1 1 0 8 0 pfstkey 128 60 0 1 2 0 2 2 0 8 0 pfstate 448 59 0 1 7 0 7 7 0 8 0 pfrule 1360 27 0 22 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 527 0 53 30 0 30 30 0 8 0 art_table 40 528 0 53 5 0 5 5 0 8 0 art_node 32 116 0 26 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 3 1 0 1 1 0 8 0 semapl 72 86 0 76 1 0 1 1 0 8 0 shmpl 112 8 0 1 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2137 0 671 93 0 93 93 0 8 0 ffsino 296 2137 0 671 114 0 114 114 0 8 0 nchpl 144 2734 0 1029 64 0 64 64 0 8 0 rtmask 32 3 0 3 2 1 1 1 0 8 1 vnodes 216 2404 0 0 134 0 134 134 0 8 0 namei 1024 8438 0 8438 3 2 1 2 0 8 1 percpumem 16 66 0 14 1 0 1 1 0 8 0 kstatmem 264 45 0 16 4 2 2 3 0 8 0 scxspl 216 9467 0 9467 10 9 1 8 1 8 1 plimitpl 152 49 0 32 1 0 1 1 0 8 0 sigapl 424 762 0 694 8 0 8 8 0 8 0 knotepl 120 453 0 0 14 0 14 14 0 8 0 kqueuepl 224 105 0 91 1 0 1 1 0 8 0 pipepl 344 186 0 159 6 3 3 6 0 8 0 fdescpl 528 725 0 694 3 0 3 3 0 8 0 filepl 160 3496 0 3271 13 3 10 13 0 8 0 lockfpl 104 257 0 253 2 1 1 2 0 8 0 lockfspl 48 125 0 121 1 0 1 1 0 8 0 sessionpl 144 38 0 29 1 0 1 1 0 8 0 pgrppl 48 48 0 31 1 0 1 1 0 8 0 ucredpl 104 546 0 529 1 0 1 1 0 8 0 zombiepl 144 694 0 694 2 1 1 1 0 8 1 processpl 1232 762 0 694 6 0 6 6 0 8 0 procpl 664 1229 0 1146 8 0 8 8 0 8 0 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 752 547 0 513 8 3 5 7 0 8 0 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 129 0 0 17 0 17 17 0 8 0 mcl2k 2048 28 0 0 4 0 4 4 0 8 0 mextrefs 64 32 0 0 1 0 1 1 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 188 0 0 12 0 12 12 0 8 0 bufpl 272 3028 0 108 195 0 195 195 0 8 0 anonpl 32 7641 0 0 62 0 62 62 0 247 0 amapchunkpl 152 16822 0 16307 30 7 23 27 0 158 3 amappl16 200 2447 0 2416 26 12 14 14 0 8 10 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 436 0 435 1 0 1 1 0 8 0 amappl13 176 129 0 117 1 0 1 1 0 8 0 amappl12 168 975 0 945 2 0 2 2 0 8 0 amappl11 160 27 0 27 1 1 0 1 0 8 0 amappl10 152 65 0 51 1 0 1 1 0 8 0 amappl9 144 276 0 275 1 0 1 1 0 8 0 amappl8 136 102 0 100 1 0 1 1 0 8 0 amappl7 128 162 0 149 1 0 1 1 0 8 0 amappl6 120 153 0 152 1 0 1 1 0 8 0 amappl5 112 100 0 89 1 0 1 1 0 8 0 amappl4 104 315 0 294 1 0 1 1 0 8 0 amappl3 96 3129 0 3029 3 0 3 3 0 8 0 amappl2 88 852 0 773 2 0 2 2 0 8 0 amappl1 80 11723 0 11127 15 2 13 15 0 8 0 amappl 88 4786 0 4614 5 0 5 5 0 92 0 uvmvnodes 80 115 0 0 3 0 3 3 0 8 0 dma65536 65536 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 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 10 0 1 1 0 1 1 0 8 0 uaddrrnd 24 725 0 694 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 725 0 694 1 0 1 1 0 8 0 vmmpekpl 168 7897 0 7862 3 0 3 3 0 8 0 vmmpepl 168 54929 0 52997 109 12 97 97 0 357 7 vmsppl 488 724 0 694 5 1 4 5 0 8 0 rwobjpl 80 18232 0 17168 31 4 27 27 0 8 3 pdppl 4096 1457 0 1388 105 34 71 85 0 8 2 pvpl 32 15354 0 0 124 0 124 124 0 265 0 pmappl 256 724 0 694 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 487 0 43 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x79185dad9d00, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff80002999dff0) 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 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670 comcnputc(800,6c) at comcnputc+0xd0 comcn_read_reg sys/dev/ic/com.c:1671 [inline] comcnputc(800,6c) at comcnputc+0xd0 sys/dev/ic/com.c:1264 cnputc(6c) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(6c) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x223 sys/kern/subr_prf.c:723 db_printf(ffffffff835480cf) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff80003c4939d0) at db_ktrap+0xe3 db_printtrap sys/arch/amd64/amd64/db_interface.c:99 [inline] db_ktrap(6,0,ffff80003c4939d0) at db_ktrap+0xe3 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff80003c4939d0) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003c3d6038,fffff58060f141c8,ffff80003c493b90) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimens(ffff80003c3d6038,ffff80003c493ce0,ffff80003c493c30) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 end trace frame: 0xffff80003c493cd0, count: 0 ddb{1}> trace x86_ipi_db(ffff80002999dff0) 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 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:670 comcnputc(800,6c) at comcnputc+0xd0 comcn_read_reg sys/dev/ic/com.c:1671 [inline] comcnputc(800,6c) at comcnputc+0xd0 sys/dev/ic/com.c:1264 cnputc(6c) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(6c) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x223 sys/kern/subr_prf.c:723 db_printf(ffffffff835480cf) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff80003c4939d0) at db_ktrap+0xe3 db_printtrap sys/arch/amd64/amd64/db_interface.c:99 [inline] db_ktrap(6,0,ffff80003c4939d0) at db_ktrap+0xe3 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff80003c4939d0) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff80003c3d6038,fffff58060f141c8,ffff80003c493b90) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2691 sys_futimens(ffff80003c3d6038,ffff80003c493ce0,ffff80003c493c30) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2767 syscall(ffff80003c493ce0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c493ce0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x287ed568c90, count: -16