*cpu1: uvm_fault(0xfffffd8067dfc188, 0x8, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xdc end of kernel end trace frame: 0x7f7fffff4370, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000211e4850 rbx 0 rdx 0 rcx 0 rax 0x2a r8 0xffff8000211e4780 r9 0 r10 0x8468052859daa835 r11 0xb5c85a0d9c560a0d r12 0 r13 0 r14 0 r15 0 rip 0xffffffff8206f50c proc_trampoline+0xdc cs 0x8 rflags 0x246 rsp 0xffff8000211e47d0 ss 0 proc_trampoline+0xdc: movl $0,%gs:0x538 ddb{0}> show proc PROC (syz-executor.3) pid=176692 stat=onproc flags process=10 proc=0 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000246b7268,0xffff8000246b6018 process=0xffff8000ffffba38 user=0xffff8000211df000, vmspace=0xfffffd806bdb4740 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *26116 176692 99412 32767 7 0x10 syz-executor.3 26116 301897 99412 32767 2 0x4000010 syz-executor.3 94757 504115 1056 32767 2 0x10 syz-executor.2 94757 143070 1056 32767 3 0x4000090 fsleep syz-executor.2 46853 70062 15523 32767 2 0x10 syz-executor.1 46853 475091 15523 32767 3 0x4000090 fsleep syz-executor.1 41115 426646 19019 32767 2 0x10 syz-executor.6 41115 206960 19019 32767 3 0x4000090 fsleep syz-executor.6 39360 375861 758 32767 2 0x10 syz-executor.5 39360 151584 758 32767 3 0x4000090 fsleep syz-executor.5 39360 386250 758 32767 2 0x4000010 syz-executor.5 39360 136006 758 32767 7 0x4000010 syz-executor.5 758 438573 24487 32767 3 0x90 nanoslp syz-executor.5 24487 222654 58058 0 3 0x82 wait syz-executor.5 38829 330404 9807 32767 3 0x90 nanoslp syz-executor.0 9807 156200 58058 0 3 0x82 wait syz-executor.0 1056 349630 78173 32767 3 0x90 nanoslp syz-executor.2 78173 350785 58058 0 3 0x82 wait syz-executor.2 51168 381278 22909 32767 3 0x90 nanoslp syz-executor.4 22909 262137 58058 0 3 0x82 wait syz-executor.4 19019 502710 69108 32767 3 0x90 nanoslp syz-executor.6 69108 196176 58058 0 3 0x82 wait syz-executor.6 15523 314447 99189 32767 3 0x90 nanoslp syz-executor.1 99189 73251 58058 0 3 0x82 wait syz-executor.1 99412 258189 65096 32767 3 0x90 nanoslp syz-executor.3 65096 183430 58058 0 3 0x82 wait syz-executor.3 65613 395016 0 0 3 0x14200 bored sosplice 9513 106836 52968 32767 2 0x10 syz-executor.7 52968 270979 58058 0 3 0x82 wait syz-executor.7 58058 127498 90144 0 3 0x82 thrsleep syz-fuzzer 58058 168583 90144 0 3 0x4000082 nanoslp syz-fuzzer 58058 187115 90144 0 3 0x4000082 thrsleep syz-fuzzer 58058 274490 90144 0 3 0x4000082 kqread syz-fuzzer 58058 452089 90144 0 3 0x4000082 thrsleep syz-fuzzer 58058 501030 90144 0 3 0x4000082 thrsleep syz-fuzzer 58058 86113 90144 0 3 0x4000082 thrsleep syz-fuzzer 58058 159103 90144 0 3 0x4000082 thrsleep syz-fuzzer 58058 376107 90144 0 3 0x4000082 thrsleep syz-fuzzer 58058 515606 90144 0 3 0x4000082 thrsleep syz-fuzzer 90144 464872 67911 0 3 0x10008a sigsusp ksh 67911 354333 27685 0 3 0x9a kqread sshd 85357 397578 1 0 3 0x100083 ttyin getty 27685 42460 1 0 3 0x88 kqread sshd 58443 352773 20904 73 3 0x1100090 kqread syslogd 20904 271800 1 0 3 0x100082 netio syslogd 69619 274423 1 0 3 0x100080 kqread resolvd 75981 271620 31336 77 3 0x100092 kqread dhcpleased 45360 344545 31336 77 3 0x100092 kqread dhcpleased 31336 104213 1 0 3 0x80 kqread dhcpleased 51714 444972 0 0 3 0x14200 bored smr 37629 375049 0 0 2 0x14200 zerothread 93333 369834 0 0 3 0x14200 aiodoned aiodoned 89226 10610 0 0 3 0x14200 syncer update 25564 418539 0 0 3 0x14200 cleaner cleaner 47243 295689 0 0 3 0x14200 reaper reaper 93790 518122 0 0 3 0x14200 pgdaemon pagedaemon 64202 135045 0 0 3 0x14200 bored viomb 53421 383020 0 0 3 0x40014200 acpi0 acpi0 69699 361161 0 0 3 0x40014200 idle1 813 463548 0 0 3 0x14200 bored softnet 96688 266786 0 0 3 0x14200 bored softnet 76215 344568 0 0 3 0x14200 bored softnet 42304 47730 0 0 3 0x14200 bored softnet 8500 45840 0 0 3 0x14200 bored systqmp 44714 421886 0 0 3 0x14200 bored systq 69373 263935 0 0 3 0x40014200 bored softclock 74662 328418 0 0 3 0x40014200 idle0 1 171070 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd807effe7d0) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pmap_enter+0x1b8 rcr3 machine/cpufunc.h:141 [inline] #3 pmap_enter+0x1b8 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:414 [inline] #3 pmap_enter+0x1b8 sys/arch/amd64/amd64/pmap.c:2691 #4 uvm_fault_lower+0x77c sys/uvm/uvm_fault.c:1496 #5 uvm_fault+0x248 #6 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #7 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #8 recall_trap+0x8 Process 26116 (syz-executor.3) thread 0xffff8000246b7508 (176692) exclusive rwlock amaplk r = 0 (0xfffffd8068dc51a0) #0 witness_lock+0x44d #1 uvm_fault_check+0x3ca sys/uvm/uvm_fault.c:774 #2 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #3 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #4 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806bdb4758) #0 witness_lock+0x44d #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1762 #2 uvm_fault_check+0x3a sys/uvm/uvm_fault.c:674 #3 uvm_fault+0x102 sys/uvm/uvm_fault.c:602 #4 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #5 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #6 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd807effe7d0) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 pmap_enter+0x1b8 rcr3 machine/cpufunc.h:141 [inline] #3 pmap_enter+0x1b8 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:414 [inline] #3 pmap_enter+0x1b8 sys/arch/amd64/amd64/pmap.c:2691 #4 uvm_fault_lower+0x77c sys/uvm/uvm_fault.c:1496 #5 uvm_fault+0x248 #6 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #7 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #8 recall_trap+0x8 Process 39360 (syz-executor.5) thread 0xffff8000246b7268 (136006) exclusive rrwlock inode r = 0 (0xfffffd806aa55808) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 ufs_direnter+0xb6e #6 ufs_makeinode+0x4cc sys/ufs/ufs/ufs_vnops.c:1868 #7 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1382 #8 VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442 #9 dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82b54a40) #0 witness_lock+0x44d #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x3d3 sys/kern/sched_bsd.c:416 #3 sleep_finish+0x180 sys/kern/kern_synch.c:420 #4 tsleep+0x12c sys/kern/kern_synch.c:158 #5 biowait+0x91 sys/kern/vfs_bio.c:1271 #6 bwrite+0x21b sys/kern/vfs_bio.c:772 #7 ffs_update+0x27d sys/ufs/ffs/ffs_inode.c:113 #8 ffs_truncate+0xcec #9 ufs_direnter+0xae5 sys/ufs/ufs/ufs_lookup.c:924 #10 ufs_makeinode+0x4cc sys/ufs/ufs/ufs_vnops.c:1868 #11 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1382 #12 VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442 #13 dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804 #14 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #14 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #15 Xsyscall+0x128 Process 9513 (syz-executor.7) thread 0xffff8000fffed508 (106836) exclusive rrwlock inode r = 0 (0xfffffd806aa55b38) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3101 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80693ca0a0) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3086 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10207 6412K 6420K 78643K 11404 0 pcb 13 12K 14K 78643K 17 0 rtable 248 7K 7K 78643K 7650 0 ifaddr 81 17K 17K 78643K 329 0 sysctl 3 1K 2K 78643K 7 0 counters 56 35K 35K 78643K 126 0 ioctlops 0 0K 2K 78643K 176 0 iov 0 0K 40K 78643K 3518 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1271 79K 79K 78643K 5692 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 186 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 4364 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 23 85K 129K 78643K 19192 0 sigio 0 0K 0K 78643K 436 0 proc 56 78K 140K 78643K 2901 0 subproc 104 6K 6K 78643K 559 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1633 0 in_multi 99 6K 7K 78643K 696 0 ether_multi 1 0K 0K 78643K 74 0 mrt 1 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 241 1076K 1076K 78643K 241 0 exec 0 0K 2K 78643K 3811 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 7 26K 26K 78643K 7 0 UVM amap 308 87K 104K 78643K 119099 0 UVM aobj 131 6K 6K 78643K 147 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 479 0 NDP 11 0K 2K 78643K 132 0 temp 124 4730K 4858K 78643K 49495 0 kqueue 12 18K 29K 78643K 1812 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 7950 0 7947 67 64 3 5 0 8 2 rtentry 112 526 0 409 4 0 4 4 0 8 0 unpcb 136 15660 0 15645 129 128 1 9 0 8 0 syncache 296 192 0 192 32 31 1 1 0 8 1 tcpqe 32 55 0 55 18 18 0 1 0 8 0 tcpcb 736 7862 0 7856 195 192 3 15 0 8 1 arp 120 92 0 73 1 0 1 1 0 8 0 ipq 40 9 0 9 5 5 0 1 0 8 0 ipqe 40 17 0 17 5 5 0 1 0 8 0 inpcb 312 16031 0 16018 188 186 2 14 0 8 0 ip6q 72 7 0 7 2 2 0 1 0 8 0 ip6af 40 21 0 21 2 2 0 1 0 8 0 nd6 48 155 0 125 1 0 1 1 0 8 0 kcovpl 48 43 0 35 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2121 0 1631 36 5 31 32 0 8 0 art_table 32 2122 0 1631 5 0 5 5 0 8 0 art_node 16 525 0 418 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 3 2 1 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 4362 0 4352 1 0 1 1 0 8 0 shmpl 112 144 0 16 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 29986 0 28536 91 0 91 91 0 8 0 ffsino 272 29986 0 28536 98 0 98 98 0 8 0 nchpl 144 58747 0 57109 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 203730 0 203727 11 10 1 2 0 8 0 percpumem 16 75 0 35 1 0 1 1 0 8 0 kstatmem 264 92 0 70 2 0 2 2 0 8 0 scxspl 216 181000 0 181000 70 67 3 8 0 8 3 plimitpl 152 4269 0 4246 14 13 1 2 0 8 0 sigapl 424 19398 0 19344 8 1 7 7 0 8 0 futexpl 64 183866 0 183862 9 8 1 1 0 8 0 knotepl 120 1155 0 0 17 1 16 17 0 8 0 kqueuepl 216 5780 0 5772 81 80 1 8 0 8 0 pipepl 336 4769 0 4741 76 73 3 10 0 8 0 fdescpl 496 19380 0 19346 7 1 6 6 0 8 0 filepl 152 144899 0 144662 180 168 12 21 0 8 2 lockfpl 104 2714 0 2712 2 1 1 2 0 8 0 lockfspl 48 728 0 726 1 0 1 1 0 8 0 sessionpl 144 58 0 42 1 0 1 1 0 8 0 pgrppl 48 138 0 122 1 0 1 1 0 8 0 ucredpl 96 25255 0 25237 1 0 1 1 0 8 0 zombiepl 144 19346 0 19344 5 4 1 1 0 8 0 processpl 1064 19398 0 19344 5 1 4 5 0 8 0 procpl 672 58621 0 58551 41 33 8 8 0 8 1 sosppl 168 267 0 267 26 26 0 1 0 8 0 sockpl 480 40212 0 40182 676 664 12 34 0 8 8 mcl64k 65536 25 0 0 3 0 3 3 0 8 0 mcl16k 16384 41 0 0 4 1 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 31 0 0 2 0 2 2 0 8 0 mcl8k 8192 57 0 0 7 4 3 3 0 8 0 mcl4k 4096 33 0 0 3 0 3 3 0 8 0 mcl2k2 2112 29 0 0 2 1 1 2 0 8 0 mcl2k 2048 384 0 0 22 4 18 19 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 3850 0 0 198 1 197 197 0 8 0 bufpl 288 38829 0 32496 453 0 453 453 0 8 0 anonpl 24 4208722 0 4195658 342 213 129 132 0 186 24 amapchunkpl 152 358670 0 358079 222 196 26 41 0 158 0 amappl16 200 73801 0 73405 387 355 32 46 0 8 7 amappl15 192 208 0 208 4 4 0 1 0 8 0 amappl14 184 2301 0 2293 1 0 1 1 0 8 0 amappl13 176 1934 0 1929 1 0 1 1 0 8 0 amappl12 168 3968 0 3966 1 0 1 1 0 8 0 amappl11 160 4691 0 4676 2 1 1 2 0 8 0 amappl10 152 1960 0 1956 1 0 1 1 0 8 0 amappl9 144 1220 0 1215 1 0 1 1 0 8 0 amappl8 136 5226 0 5081 6 0 6 6 0 8 0 amappl7 128 3900 0 3881 1 0 1 1 0 8 0 amappl6 120 1213 0 1186 2 1 1 2 0 8 0 amappl5 112 13825 0 13805 1 0 1 1 0 8 0 amappl4 104 10915 0 10884 6 4 2 2 0 8 0 amappl3 96 63661 0 63603 2 0 2 2 0 8 0 amappl2 88 25374 0 25300 3 1 2 3 0 8 0 amappl1 80 470037 0 469337 36 20 16 19 0 8 0 amappl 88 117239 0 117066 6 1 5 5 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 72 146 0 16 3 0 3 3 0 8 0 uaddrrnd 24 19380 0 19346 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 19380 0 19346 1 0 1 1 0 8 0 vmmpekpl 168 162701 0 162641 4 0 4 4 0 8 0 vmmpepl 168 1944166 0 1941416 415 266 149 150 0 357 17 vmsppl 368 19379 0 19346 5 1 4 5 0 8 0 rwobjpl 56 498103 0 490599 121 9 112 113 0 8 2 pdppl 4096 38767 0 38692 569 488 81 97 0 8 6 pvpl 32 7904839 0 7886255 749 523 226 252 0 265 50 pmappl 248 19379 0 19346 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1966 0 967 30 0 30 30 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xdc end of kernel end trace frame: 0x7f7fffff4370, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020cd8ff0) at x86_ipi_db+0x1a 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 x86_bus_space_io_write_1(3f8,0,65) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,65) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,65) at comcnputc+0x128 sys/dev/ic/com.c:1263 cnputc(65) at cnputc+0x4b sys/dev/cons.c:239 db_putchar(65) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068 db_printf(ffffffff826509bb) at db_printf+0x85 sys/kern/subr_prf.c:502 fault(ffffffff825fc4a1) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff80002e410340,8) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275 kerntrap(ffff80002e410340) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff80002e410440) at fifo_write+0x4e sys/miscfs/fifofs/fifo_vnops.c:271 end trace frame: 0xffff80002e4104b0, count: 0 ddb{1}> trace x86_ipi_db(ffff800020cd8ff0) at x86_ipi_db+0x1a 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 x86_bus_space_io_write_1(3f8,0,65) at x86_bus_space_io_write_1+0x31 sys/arch/amd64/amd64/bus_space.c:759 comcnputc(800,65) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,65) at comcnputc+0x128 sys/dev/ic/com.c:1263 cnputc(65) at cnputc+0x4b sys/dev/cons.c:239 db_putchar(65) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068 db_printf(ffffffff826509bb) at db_printf+0x85 sys/kern/subr_prf.c:502 fault(ffffffff825fc4a1) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff80002e410340,8) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275 kerntrap(ffff80002e410340) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff80002e410440) at fifo_write+0x4e sys/miscfs/fifofs/fifo_vnops.c:271 VOP_WRITE(fffffd806546d5f0,ffff80002e4104d8,8,fffffd807f7d7720) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd806546d5f0,ffff800021158000,7e,0,1,d10f4d2c3c06c25a,ffff80002e410600,fffffd806546d5f0,78) at vn_rdwr+0xe9 sys/kern/vfs_vnops.c:330 ufs_symlink(ffff80002e410600) at ufs_symlink+0x142 sys/ufs/ufs/ufs_vnops.c:1398 VOP_SYMLINK(fffffd8065fa9788,ffff80002e410780,ffff80002e4107b0,ffff80002e4106b0,ffff800021158000) at VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442 dosymlinkat(ffff8000246b7268,20000100,ffffff9c,20000240) at dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804 syscall(ffff80002e410930) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e410930) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3bf4d1585a0, count: -21