*cpu1: uvm_fault(0xfffffd8059c03528, 0x8, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0xc00089daa0, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a1f2b70 rbx 0 rdx 0 rcx 0xffff80002a148cd8 rax 0x2a r8 0xffff80002a1f2aa0 r9 0 r10 0x1de763226f2eeaf r11 0x969cfe3de85f811a r12 0 r13 0 r14 0 r15 0 rip 0xffffffff810bf4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a1f2af0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{0}> show proc PROC (syz-fuzzer) tid=56462 pid=26458 tcnt=16 stat=onproc flags process=1a000002 proc=4000000 runpri=24, usrpri=57, slppri=24, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a148008,0xffff80002a149208 process=0xffff8000ffff8d60 user=0xffff80002a1ed000, vmspace=0xfffffd8008b926e0 estcpu=7, cpticks=27, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 34193 300074 55850 32767 2 0x8000010 syz-executor.0 45644 251510 18502 32767 2 0x8000010 syz-executor.7 45644 16757 18502 32767 3 0xc000090 fsleep syz-executor.7 34688 111604 11022 32767 2 0x8000010 syz-executor.6 34688 309042 11022 32767 3 0xc000090 fsleep syz-executor.6 66783 172884 58212 32767 2 0x8000010 syz-executor.5 66783 62062 58212 32767 7 0xc000010 syz-executor.5 3131 293125 36220 32767 2 0x8000010 syz-executor.3 3131 518467 36220 32767 2 0xc000010 syz-executor.3 93027 21334 45147 32767 2 0x8000010 syz-executor.1 45147 313836 26458 0 3 0x8000082 wait syz-executor.1 18502 439207 96197 32767 2 0x8000010 syz-executor.7 96197 383826 26458 0 3 0x8000082 wait syz-executor.7 55850 467903 15886 32767 2 0x8000010 syz-executor.0 66641 417436 8939 32767 3 0x8000090 nanoslp syz-executor.2 15886 35209 26458 0 3 0x8000082 wait syz-executor.0 8939 373214 26458 0 3 0x8000082 wait syz-executor.2 11022 396764 90830 32767 3 0x8000090 nanoslp syz-executor.6 90830 289608 26458 0 3 0x8000082 wait syz-executor.6 58212 122670 64903 32767 3 0x8000090 nanoslp syz-executor.5 64903 149022 26458 0 3 0x8000082 wait syz-executor.5 36220 289382 41966 32767 2 0x8000010 syz-executor.3 41966 48802 26458 0 3 0x8000082 wait syz-executor.3 36078 287796 1 32767 2 0x8000010 syz-executor.4 73257 25901 0 0 3 0x14200 bored sosplice 26458 129538 78658 0 3 0x1a000082 wait syz-fuzzer 26458 457288 78658 0 3 0x1e000082 nanoslp syz-fuzzer 26458 256645 78658 0 3 0x1e000082 thrsleep syz-fuzzer *26458 56462 78658 0 7 0x1e000002 syz-fuzzer 26458 505241 78658 0 3 0x1e000082 wait syz-fuzzer 26458 359043 78658 0 3 0x1e000082 thrsleep syz-fuzzer 26458 78679 78658 0 3 0x1e000082 wait syz-fuzzer 26458 478595 78658 0 3 0x1e000082 thrsleep syz-fuzzer 26458 506000 78658 0 3 0x1e000082 wait syz-fuzzer 26458 36684 78658 0 3 0x1e000082 wait syz-fuzzer 26458 462825 78658 0 3 0x1e000082 thrsleep syz-fuzzer 26458 187367 78658 0 3 0x1e000082 wait syz-fuzzer 26458 401940 78658 0 3 0x1e000082 wait syz-fuzzer 26458 281946 78658 0 3 0x1e000082 thrsleep syz-fuzzer 26458 127361 78658 0 3 0x1e000082 thrsleep syz-fuzzer 26458 73008 78658 0 2 0x1e000002 syz-fuzzer 78658 14435 82462 0 3 0x810008a sigsusp ksh 82462 449447 13414 0 3 0x1800009a kqread sshd 74667 291747 1 0 3 0x18100083 ttyin getty 13414 104581 1 0 3 0x18000088 kqread sshd 16151 117072 50331 73 3 0x19100010 biowait syslogd 50331 342127 1 0 3 0x18100082 sbwait syslogd 47632 119582 1 0 3 0x18100080 kqread resolvd 21363 317199 50282 77 3 0x18100092 kqread dhcpleased 35395 449775 50282 77 3 0x18100092 kqread dhcpleased 50282 329278 1 0 3 0x18000080 kqread dhcpleased 36692 240634 0 0 3 0x14200 bored smr 39038 495463 0 0 2 0x14200 zerothread 37639 507037 0 0 3 0x14200 aiodoned aiodoned 7458 192636 0 0 3 0x14200 syncer update 54377 489932 0 0 3 0x14200 cleaner cleaner 52974 110078 0 0 3 0x14200 reaper reaper 41606 176172 0 0 3 0x14200 pgdaemon pagedaemon 9419 464083 0 0 3 0x14200 bored viomb 91444 122102 0 0 3 0x40014200 acpi0 acpi0 16968 460430 0 0 3 0x40014200 idle1 76664 402978 0 0 3 0x14200 bored softnet3 19333 53955 0 0 3 0x14200 bored softnet2 2884 468842 0 0 3 0x14200 bored softnet1 57994 105611 0 0 2 0x14200 softnet0 64061 334984 0 0 3 0x14200 bored systqmp 66696 459436 0 0 3 0x14200 bored systq 41035 31239 0 0 3 0x14200 tmoslp softclockmp 43860 353504 0 0 3 0x40014200 tmoslp softclock 86650 333265 0 0 3 0x40014200 idle0 1 170791 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff82df5908) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 mtx_enter_try+0x103 #2 mtx_enter+0x4e sys/kern/kern_lock.c:266 #3 uvm_pmr_getpages+0xeac sys/uvm/uvm_pmemrange.c:1205 #4 uvm_pagealloc+0x1a9 sys/uvm/uvm_page.c:910 #5 uvm_fault_lower+0x1b2 #6 uvm_fault+0x255 sys/uvm/uvm_fault.c:637 #7 upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 66783 (syz-executor.5) thread 0xffff80002dae59c8 (62062) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82dfa6b0) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x491 sys/kern/sched_bsd.c:470 #3 sleep_finish+0x19a sys/kern/kern_synch.c:414 #4 biowait+0x91 sys/kern/vfs_bio.c:1254 #5 bwrite+0x1fe sys/kern/vfs_bio.c:766 #6 VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 #7 ufs_direnter+0x60e sys/ufs/ufs/ufs_lookup.c:833 #8 ufs_makeinode+0x3c2 sys/ufs/ufs/ufs_vnops.c:1769 #9 ufs_symlink+0x4b sys/ufs/ufs/ufs_vnops.c:1298 #10 VOP_SYMLINK+0xd7 sys/kern/vfs_vops.c:426 #11 dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1809 #12 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #12 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e60ac50) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x91 sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 vget+0x1fd sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ffs_inode_alloc+0x1e4 sys/ufs/ffs/ffs_alloc.c:393 #9 ufs_makeinode+0xb0 sys/ufs/ufs/ufs_vnops.c:1733 #10 ufs_symlink+0x4b sys/ufs/ufs/ufs_vnops.c:1298 #11 VOP_SYMLINK+0xd7 sys/kern/vfs_vops.c:426 #12 dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1809 #13 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #13 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 Process 26458 (syz-fuzzer) thread 0xffff80002a148cd8 (56462) exclusive rwlock amaplk r = 0 (0xfffffd806828dc18) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 uvm_fault_check+0x401 sys/uvm/uvm_fault.c:782 #2 uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 #3 upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 #4 usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd8008b927d0) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x3e sys/uvm/uvm_fault.c:672 #3 uvm_fault+0xf2 sys/uvm/uvm_fault.c:600 #4 upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff82df5908) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 mtx_enter_try+0x103 #2 mtx_enter+0x4e sys/kern/kern_lock.c:266 #3 uvm_pmr_getpages+0xeac sys/uvm/uvm_pmemrange.c:1205 #4 uvm_pagealloc+0x1a9 sys/uvm/uvm_page.c:910 #5 uvm_fault_lower+0x1b2 #6 uvm_fault+0x255 sys/uvm/uvm_fault.c:637 #7 upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x22a sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 16151 (syslogd) thread 0xffff8000ffffd200 (117072) exclusive rrwlock inode r = 0 (0xfffffd806e634d60) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x91 sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0xf1 sys/kern/vfs_syscalls.c:2904 #6 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #6 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10182 6408K 6419K 166960K 11434 0 pcb 17 12K 12K 166960K 17 0 rtable 250 7K 7K 166960K 2451 0 pf 29 8K 8K 166960K 145 0 ifaddr 44 16K 16K 166960K 284 0 ifgroup 50 2K 2K 166960K 282 0 sysctl 4 1K 2K 166960K 6 0 counters 64 36K 36K 166960K 180 0 ioctlops 0 0K 2K 166960K 258 0 iov 0 0K 18K 166960K 444 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1377 87K 87K 166960K 2868 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 144 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 531 0 dirhash 15 2K 2K 166960K 201 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 22 81K 113K 166960K 7060 0 sigio 0 0K 0K 166960K 189 0 proc 56 78K 127K 166960K 2827 0 subproc 104 6K 7K 166960K 1092 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1649 0 in_multi 99 7K 7K 166960K 1119 0 ether_multi 1 0K 0K 166960K 79 0 mrt 3 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 1799 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 340 78K 107K 166960K 62709 0 UVM aobj 131 8K 8K 166960K 145 0 pinsyscall 42 84K 105K 166960K 9722 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 384 0 NDP 13 0K 1K 166960K 201 0 temp 74 6816K 6896K 166960K 25833 0 kqueue 12 18K 30K 166960K 968 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 120 802 0 799 3 2 1 3 0 8 0 rtentry 112 809 0 691 4 0 4 4 0 8 0 unpcb 144 5821 0 5804 28 27 1 5 0 8 0 syncache 336 184 0 184 42 41 1 1 0 8 1 sackhl 24 4 0 4 3 3 0 1 0 8 0 tcpqe 32 162 0 162 40 39 1 1 0 8 1 tcpcb 808 3963 0 3941 50 46 4 10 0 8 0 arp 120 142 0 123 1 0 1 1 0 8 0 ipq 40 16 0 16 4 4 0 1 0 8 0 ipqe 40 200 0 200 4 4 0 1 0 8 0 inpcb 392 9011 0 8983 70 65 5 11 0 8 0 nd6 136 250 0 219 3 1 2 2 0 8 0 kcovpl 48 84 0 76 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 3183 0 2711 46 16 30 31 0 8 0 art_table 32 3184 0 2711 4 0 4 4 0 8 0 art_node 16 808 0 700 1 0 1 1 0 8 0 sysvmsgpl 40 29 0 15 2 1 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 529 0 519 1 0 1 1 0 8 0 shmpl 112 142 0 14 4 0 4 4 0 8 0 dirhash 1024 143 0 124 3 0 3 3 0 8 0 dino2pl 256 10858 0 9317 97 0 97 97 0 8 0 ffsino 272 10858 0 9317 103 0 103 103 0 8 0 nchpl 144 20213 0 18478 66 0 66 66 0 8 0 uvmvnodes 80 9371 0 0 192 0 192 192 0 8 0 vnodes 216 9371 0 0 521 0 521 521 0 8 0 namei 1024 71693 0 71692 21 20 1 2 0 8 0 percpumem 16 104 0 58 1 0 1 1 0 8 0 kstatmem 264 138 0 116 2 0 2 2 0 8 0 scxspl 216 195008 0 195007 37 36 1 8 1 8 0 plimitpl 152 1994 0 1972 13 12 1 2 0 8 0 sigapl 424 7190 0 7137 7 0 7 7 0 8 0 futexpl 64 91828 0 91826 26 25 1 1 0 8 0 knotepl 120 954 0 0 10 0 10 10 0 8 0 kqueuepl 216 1835 0 1826 5 4 1 2 0 8 0 pipepl 320 1493 0 1465 17 14 3 9 0 8 0 fdescpl 496 7171 0 7138 7 2 5 6 0 8 0 filepl 152 43416 0 43171 54 42 12 16 0 8 0 lockfpl 104 1403 0 1401 1 0 1 1 0 8 0 lockfspl 48 495 0 493 1 0 1 1 0 8 0 sessionpl 144 81 0 65 1 0 1 1 0 8 0 pgrppl 48 243 0 227 1 0 1 1 0 8 0 ucredpl 104 7167 0 7149 1 0 1 1 0 8 0 zombiepl 144 7138 0 7137 1 0 1 1 0 8 0 processpl 1136 7190 0 7137 5 0 5 5 0 8 0 procpl 656 15383 0 15311 8 0 8 8 0 8 0 srpgc 96 1 0 1 1 1 0 1 0 8 0 sosppl 168 181 0 178 6 5 1 1 0 8 0 sockpl 664 15779 0 15732 85 79 6 16 0 8 0 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 14 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 9 0 0 1 0 1 1 0 8 0 mcl8k 8192 32 0 0 4 1 3 3 0 8 0 mcl4k 4096 45 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 815 0 0 44 17 27 44 0 8 0 mtagpl 96 6 0 0 1 0 1 1 0 8 0 mbufpl 256 1872 0 0 69 0 69 69 0 8 0 bufpl 280 18798 0 9426 670 0 670 670 0 8 0 anonpl 24 1274071 0 1267734 247 167 80 112 0 186 0 amapchunkpl 152 219101 0 218402 144 106 38 53 0 158 0 amappl16 200 30405 0 30305 299 287 12 44 0 8 0 amappl15 192 19 0 19 6 6 0 1 0 8 0 amappl14 184 394 0 384 2 1 1 2 0 8 0 amappl13 176 17 0 16 6 5 1 1 0 8 0 amappl12 168 8766 0 8726 4 1 3 3 0 8 0 amappl11 160 50 0 40 1 0 1 1 0 8 0 amappl10 152 213 0 202 1 0 1 1 0 8 0 amappl9 144 285 0 284 1 0 1 1 0 8 0 amappl8 136 1335 0 1196 6 0 6 6 0 8 0 amappl7 128 95 0 80 1 0 1 1 0 8 0 amappl6 120 1236 0 1203 3 1 2 2 0 8 0 amappl5 112 517 0 505 1 0 1 1 0 8 0 amappl4 104 1264 0 1216 2 0 2 2 0 8 0 amappl3 96 38160 0 38071 4 1 3 4 0 8 0 amappl2 88 8247 0 8151 5 2 3 4 0 8 0 amappl1 80 37670 0 37159 22 10 12 22 0 8 0 amappl 88 60879 0 60675 6 0 6 6 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 72 144 0 14 3 0 3 3 0 8 0 uaddrrnd 24 7171 0 7138 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7171 0 7138 1 0 1 1 0 8 0 vmmpekpl 168 54282 0 54223 4 0 4 4 0 8 0 vmmpepl 168 467301 0 465146 263 150 113 128 0 357 1 vmsppl 440 7170 0 7138 9 4 5 5 0 8 0 rwobjpl 56 128057 0 117357 190 35 155 155 0 8 0 pdppl 4096 14349 0 14276 522 441 81 89 0 8 8 pvpl 32 48535 0 0 395 3 392 393 0 265 0 pmappl 248 7170 0 7138 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1013 0 584 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0xc00089daa0, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029cebff0) 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+0x27 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x2e sys/arch/amd64/amd64/bus_space.c:654 comcnputc(800,2c) at comcnputc+0x1a7 sys/dev/ic/com.c:1270 cnputc(2c) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(2c) at db_putchar+0x3eb sys/ddb/db_output.c:155 kprintf() at kprintf+0x21c1 sys/kern/subr_prf.c:1064 db_printf(ffffffff82904c9c) at db_printf+0x89 sys/kern/subr_prf.c:498 fault(ffffffff828b4eee) at fault+0x95 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80002a282810,8) at kpageflttrap+0x2b7 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80002a282810) at kerntrap+0xf2 sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff80002a282900) at fifo_write+0x4f sys/miscfs/fifofs/fifo_vnops.c:273 end trace frame: 0xffff80002a282970, count: 0 ddb{1}> trace x86_ipi_db(ffff800029cebff0) 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+0x27 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x2e sys/arch/amd64/amd64/bus_space.c:654 comcnputc(800,2c) at comcnputc+0x1a7 sys/dev/ic/com.c:1270 cnputc(2c) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(2c) at db_putchar+0x3eb sys/ddb/db_output.c:155 kprintf() at kprintf+0x21c1 sys/kern/subr_prf.c:1064 db_printf(ffffffff82904c9c) at db_printf+0x89 sys/kern/subr_prf.c:498 fault(ffffffff828b4eee) at fault+0x95 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80002a282810,8) at kpageflttrap+0x2b7 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80002a282810) at kerntrap+0xf2 sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff80002a282900) at fifo_write+0x4f sys/miscfs/fifofs/fifo_vnops.c:273 VOP_WRITE(fffffd80666620d8,ffff80002a282998,8,fffffd807f7d73a8) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd80666620d8,ffff80002a184400,208,0,1,f91cc80c9fd5c085,ffff80002a282ac0,fffffd80666620d8,78) at vn_rdwr+0xee sys/kern/vfs_vnops.c:324 ufs_symlink(ffff80002a282ac0) at ufs_symlink+0x175 sys/ufs/ufs/ufs_vnops.c:1314 VOP_SYMLINK(fffffd80564e6648,ffff80002a282c40,ffff80002a282c70,ffff80002a282b70,ffff80002a184400) at VOP_SYMLINK+0xd7 sys/kern/vfs_vops.c:426 dosymlinkat(ffff80002dae59c8,20000340,ffffff9c,20000580) at dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1809 syscall(ffff80002a282df0) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002a282df0) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x59c88d71160, count: -21