*cpu1: uvm_fault(0xfffffd80697ff8b8, 0x8, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xdc end of kernel end trace frame: 0x7f7fffffb3a0, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002e38ba40 rbx 0 rdx 0 rcx 0 rax 0x2a r8 0xffff80002e38b970 r9 0 r10 0x8cb78202de94473c r11 0xed88598416e282e0 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff8103550c proc_trampoline+0xdc cs 0x8 rflags 0x246 rsp 0xffff80002e38b9c0 ss 0 proc_trampoline+0xdc: movl $0,%gs:0x538 ddb{0}> show proc PROC (syz-executor.6) pid=388353 stat=onproc flags process=10 proc=0 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff80002121e2a8,0xffff80002121e7f8 process=0xffff80002489a588 user=0xffff80002e386000, vmspace=0xfffffd806c6bd180 estcpu=31, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *72114 388353 1973 32767 7 0x10 syz-executor.6 89898 491921 50057 32767 2 0x10 syz-executor.0 89898 69182 50057 32767 3 0x4000090 fsleep syz-executor.0 62954 476620 54762 32767 2 0x10 syz-executor.7 62954 199340 54762 32767 2 0x4000010 syz-executor.7 53608 323328 8713 32767 2 0x10 syz-executor.1 53608 260601 8713 32767 2 0x4000010 syz-executor.1 92129 28101 36751 32767 2 0x10 syz-executor.2 92129 423386 36751 32767 7 0x4000010 syz-executor.2 91213 282270 10918 32767 2 0x10 syz-executor.3 91213 112359 10918 32767 3 0x4000090 fsleep syz-executor.3 57412 107092 8950 32767 3 0x90 nanoslp syz-executor.5 57412 221602 8950 32767 2 0x4000010 syz-executor.5 57412 87137 8950 32767 3 0x4000090 fsleep syz-executor.5 50057 337774 67681 32767 3 0x90 nanoslp syz-executor.0 67681 23750 46281 0 3 0x82 wait syz-executor.0 54762 212842 71211 32767 3 0x90 nanoslp syz-executor.7 71211 269187 46281 0 3 0x82 wait syz-executor.7 75813 495352 26892 32767 3 0x10 biowait syz-executor.4 26892 382787 46281 0 3 0x82 wait syz-executor.4 36751 447783 79276 32767 3 0x90 nanoslp syz-executor.2 79276 242762 46281 0 3 0x82 wait syz-executor.2 1973 148132 37622 32767 3 0x90 nanoslp syz-executor.6 37622 306191 46281 0 3 0x82 wait syz-executor.6 72473 3240 0 0 3 0x14200 bored sosplice 8950 121707 46167 32767 3 0x90 nanoslp syz-executor.5 46167 205867 46281 0 3 0x82 wait syz-executor.5 10918 332216 59513 32767 3 0x90 nanoslp syz-executor.3 8713 127809 244 32767 3 0x90 nanoslp syz-executor.1 59513 39250 46281 0 3 0x82 wait syz-executor.3 244 200265 46281 0 3 0x82 wait syz-executor.1 46281 48693 24403 0 3 0x82 thrsleep syz-fuzzer 46281 227179 24403 0 3 0x4000082 nanoslp syz-fuzzer 46281 166107 24403 0 3 0x4000082 thrsleep syz-fuzzer 46281 116266 24403 0 3 0x4000082 thrsleep syz-fuzzer 46281 296217 24403 0 3 0x4000082 thrsleep syz-fuzzer 46281 311994 24403 0 3 0x4000082 thrsleep syz-fuzzer 46281 256367 24403 0 3 0x4000082 kqread syz-fuzzer 46281 431445 24403 0 3 0x4000082 thrsleep syz-fuzzer 46281 294162 24403 0 3 0x4000082 thrsleep syz-fuzzer 46281 209948 24403 0 3 0x4000082 thrsleep syz-fuzzer 24403 39549 80178 0 3 0x10008a sigsusp ksh 80178 255989 79706 0 3 0x9a kqread sshd 24385 134903 1 0 3 0x100083 ttyin getty 79706 14595 1 0 3 0x88 kqread sshd 86582 440003 10200 73 3 0x1100090 kqread syslogd 10200 512253 1 0 3 0x100082 netio syslogd 7897 472758 1 0 3 0x100080 kqread resolvd 65101 470618 96776 77 3 0x100092 kqread dhcpleased 75194 264595 96776 77 3 0x100092 kqread dhcpleased 96776 454291 1 0 3 0x80 kqread dhcpleased 67837 322558 0 0 3 0x14200 bored smr 23678 336551 0 0 2 0x14200 zerothread 9507 186173 0 0 3 0x14200 aiodoned aiodoned 8428 444541 0 0 3 0x14200 syncer update 17718 60670 0 0 3 0x14200 cleaner cleaner 91294 309819 0 0 3 0x14200 reaper reaper 62171 218614 0 0 3 0x14200 pgdaemon pagedaemon 66185 436287 0 0 3 0x14200 bored viomb 84203 520415 0 0 3 0x40014200 acpi0 acpi0 19430 274585 0 0 3 0x40014200 idle1 45756 150609 0 0 3 0x14200 bored softnet 52840 160065 0 0 3 0x14200 bored systqmp 17993 172040 0 0 3 0x14200 bored systq 72499 407274 0 0 3 0x40014200 bored softclock 82183 252953 0 0 3 0x40014200 idle0 1 521413 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff82a0c9a0) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 uvm_pmr_getpages+0xeac sys/uvm/uvm_pmemrange.c:1205 #4 uvm_pagealloc+0x1a4 sys/uvm/uvm_page.c:911 #5 uvm_fault_lower+0x1aa #6 uvm_fault+0x248 #7 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #8 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #9 recall_trap+0x8 Process 72114 (syz-executor.6) thread 0xffff80002121f7a8 (388353) exclusive rwlock amaplk r = 0 (0xfffffd806c7b7be0) #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 (0xfffffd806c6bd198) #0 witness_lock+0x44d #1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1758 #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 &uvm.fpageqlock r = 0 (0xffffffff82a0c9a0) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 uvm_pmr_getpages+0xeac sys/uvm/uvm_pmemrange.c:1205 #4 uvm_pagealloc+0x1a4 sys/uvm/uvm_page.c:911 #5 uvm_fault_lower+0x1aa #6 uvm_fault+0x248 #7 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181 #8 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403 #9 recall_trap+0x8 Process 92129 (syz-executor.2) thread 0xffff80002121e2a8 (423386) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82b55258) #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+0x198 sys/kern/kern_synch.c:437 #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 VOP_BWRITE+0x4a sys/kern/vfs_vops.c:656 #8 ufs_direnter+0x8fa sys/ufs/ufs/ufs_lookup.c:909 #9 ufs_makeinode+0x4cc sys/ufs/ufs/ufs_vnops.c:1868 #10 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1382 #11 VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442 #12 dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8074d2ea28) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:677 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #9 ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1830 #10 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1382 #11 VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442 #12 dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 Process 75813 (syz-executor.4) thread 0xffff80002b544d20 (495352) exclusive rrwlock inode r = 0 (0xfffffd806ad7a928) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:677 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318 #8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561 #11 namei+0x36a sys/kern/vfs_lookup.c:245 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850 #13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8072d6b928) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #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 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1850 #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 10204 6411K 6419K 78643K 11320 0 pcb 13 12K 14K 78643K 17 0 rtable 258 7K 7K 78643K 1129 0 ifaddr 81 17K 17K 78643K 139 0 sysctl 2 0K 0K 78643K 4 0 counters 56 35K 35K 78643K 72 0 ioctlops 0 0K 2K 78643K 46 0 iov 0 0K 28K 78643K 494 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1271 79K 79K 78643K 2059 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 43 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 986 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 25 93K 117K 78643K 5460 0 sigio 0 0K 0K 78643K 87 0 proc 56 74K 123K 78643K 1171 0 subproc 104 6K 6K 78643K 208 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 299 0 in_multi 99 6K 6K 78643K 244 0 ether_multi 1 0K 0K 78643K 20 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 1394 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 411 91K 105K 78643K 71338 0 UVM aobj 131 4K 4K 78643K 137 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 120 0 NDP 11 0K 2K 78643K 51 0 temp 125 4707K 4779K 78643K 16920 0 kqueue 12 18K 26K 78643K 490 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 120 421 0 418 6 5 1 2 0 8 0 rtentry 112 221 0 101 4 0 4 4 0 8 0 unpcb 136 3927 0 3914 36 35 1 6 0 8 0 syncache 296 51 0 51 9 8 1 1 0 8 1 tcpqe 32 19 0 19 5 4 1 1 0 8 1 tcpcb 736 2656 0 2649 50 42 8 14 0 8 5 arp 120 35 0 17 1 0 1 1 0 8 0 ipq 40 71 0 71 3 3 0 1 0 8 0 ipqe 40 3026 0 3026 3 3 0 1 0 8 0 inpcb 304 9505 0 9494 75 66 9 17 0 8 7 rttmr 72 3 0 2 1 0 1 1 0 8 0 ip6q 72 36 0 36 2 2 0 1 0 8 0 ip6af 40 70 0 70 2 2 0 1 0 8 0 nd6 48 68 0 35 1 0 1 1 0 8 0 kcovpl 48 16 0 8 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 927 0 390 36 2 34 34 0 8 0 art_table 32 928 0 390 5 0 5 5 0 8 0 art_node 16 220 0 110 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 0 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 984 0 974 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 8266 0 6823 91 0 91 91 0 8 0 ffsino 272 8266 0 6823 97 0 97 97 0 8 0 nchpl 144 15532 0 13906 62 0 62 62 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 52591 0 52590 3 2 1 2 0 8 0 percpumem 16 48 0 8 1 0 1 1 0 8 0 scxspl 216 45559 0 45558 20 17 3 8 0 8 2 plimitpl 152 1232 0 1210 7 5 2 2 0 8 1 sigapl 424 5727 0 5676 7 1 6 7 0 8 0 futexpl 64 48290 0 48287 1 0 1 1 0 8 0 knotepl 120 375 0 0 10 0 10 10 0 8 0 kqueuepl 216 2050 0 2042 17 16 1 5 0 8 0 pipepl 336 1060 0 1032 29 26 3 8 0 8 0 fdescpl 496 5712 0 5676 7 2 5 6 0 8 0 filepl 152 39089 0 38853 59 44 15 20 0 8 4 lockfpl 104 845 0 842 2 1 1 2 0 8 0 lockfspl 48 265 0 262 1 0 1 1 0 8 0 sessionpl 144 31 0 15 1 0 1 1 0 8 0 pgrppl 48 40 0 24 1 0 1 1 0 8 0 ucredpl 96 5146 0 5128 1 0 1 1 0 8 0 zombiepl 144 5676 0 5676 1 0 1 1 0 8 1 processpl 1064 5727 0 5676 5 1 4 4 0 8 0 procpl 672 16091 0 16024 15 8 7 8 0 8 0 sosppl 168 83 0 83 7 6 1 1 0 8 1 sockpl 480 14026 0 13999 267 255 12 37 0 8 8 mcl64k 65536 25 0 0 4 1 3 3 0 8 0 mcl16k 16384 17 0 0 3 1 2 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 11 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 181 0 0 18 1 17 18 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 3439 0 0 210 0 210 210 0 8 0 bufpl 288 12035 0 5700 453 0 453 453 0 8 0 anonpl 24 1630753 0 1615957 177 73 104 117 0 186 1 amapchunkpl 152 178851 0 178028 71 36 35 46 0 158 0 amappl16 200 17537 0 17131 108 85 23 35 0 8 0 amappl15 192 1663 0 1657 1 0 1 1 0 8 0 amappl14 184 664 0 661 1 0 1 1 0 8 0 amappl13 176 1283 0 1273 1 0 1 1 0 8 0 amappl12 168 539 0 536 1 0 1 1 0 8 0 amappl11 160 679 0 665 1 0 1 1 0 8 0 amappl10 152 783 0 771 1 0 1 1 0 8 0 amappl9 144 1114 0 1109 1 0 1 1 0 8 0 amappl8 136 961 0 844 5 0 5 5 0 8 0 amappl7 128 149 0 136 1 0 1 1 0 8 0 amappl6 120 879 0 855 2 1 1 2 0 8 0 amappl5 112 4885 0 4862 1 0 1 1 0 8 0 amappl4 104 2361 0 2327 2 0 2 2 0 8 0 amappl3 96 1516 0 1499 1 0 1 1 0 8 0 amappl2 88 2571 0 2517 3 1 2 3 0 8 0 amappl1 80 105133 0 104495 18 3 15 18 0 8 0 amappl 88 70532 0 70246 9 1 8 8 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 5712 0 5676 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5712 0 5676 1 0 1 1 0 8 0 vmmpekpl 168 46017 0 45954 4 0 4 4 0 8 0 vmmpepl 168 527761 0 524961 171 43 128 136 0 357 4 vmsppl 368 5711 0 5676 4 0 4 4 0 8 0 rwobjpl 56 135486 0 128014 112 5 107 109 0 8 0 pdppl 4096 11431 0 11352 219 138 81 91 0 8 2 pvpl 32 2726524 0 2706339 310 133 177 242 0 265 0 pmappl 248 5711 0 5676 4 1 3 3 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1230 0 215 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: 0x7f7fffffb3a0, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) 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(ffffffff826370ec) at db_printf+0x85 sys/kern/subr_prf.c:502 fault(ffffffff825e4558) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff80002e390d20,8) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275 kerntrap(ffff80002e390d20) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff80002e390e20) at fifo_write+0x4e sys/miscfs/fifofs/fifo_vnops.c:271 end trace frame: 0xffff80002e390e90, count: 0 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) 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(ffffffff826370ec) at db_printf+0x85 sys/kern/subr_prf.c:502 fault(ffffffff825e4558) at fault+0x95 sys/arch/amd64/amd64/trap.c:154 kpageflttrap(ffff80002e390d20,8) at kpageflttrap+0x25a sys/arch/amd64/amd64/trap.c:275 kerntrap(ffff80002e390d20) at kerntrap+0xef sys/arch/amd64/amd64/trap.c:318 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff80002e390e20) at fifo_write+0x4e sys/miscfs/fifofs/fifo_vnops.c:271 VOP_WRITE(fffffd80690fc8d0,ffff80002e390eb8,8,fffffd807f7d8480) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd80690fc8d0,ffff800021157000,78,0,1,6cdbf7bf10436fb,ffff80002e390fe0,fffffd80690fc8d0,78) at vn_rdwr+0xe9 sys/kern/vfs_vnops.c:330 ufs_symlink(ffff80002e390fe0) at ufs_symlink+0x142 sys/ufs/ufs/ufs_vnops.c:1398 VOP_SYMLINK(fffffd8073579c58,ffff80002e391160,ffff80002e391190,ffff80002e391090,ffff800021157000) at VOP_SYMLINK+0xd0 sys/kern/vfs_vops.c:442 dosymlinkat(ffff80002121e2a8,200000c0,3,20d06ff8) at dosymlinkat+0x154 sys/kern/vfs_syscalls.c:1804 syscall(ffff80002e391310) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002e391310) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x86c6dd71670, count: -21