*cpu1: uvm_fault(0xfffffd8077df76e0, 0x8, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x797c06e175f0, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a0d4900 rbx 0 rdx 0 rcx 0xffff800036bcb470 rax 0x2a r8 0xffff80002a0d4830 r9 0x1 r10 0xadc5e2f642d5eda9 r11 0x5c62d2788049b977 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff829874c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a0d4880 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{0}> show proc PROC (syz-executor) tid=50427 pid=50207 tcnt=2 stat=onproc flags process=10 proc=0 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800036bcaa50,0xffff800036bca2c8 process=0xffff80002a113ae8 user=0xffff80002a0cf000, vmspace=0xfffffd8077df7370 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 76563 62270 40770 32767 2 0x10 syz-executor 79436 202144 53249 32767 2 0x10 syz-executor 79436 412191 53249 32767 3 0x4000090 fsleep syz-executor *50207 50427 97954 32767 7 0x10 syz-executor 50207 185577 97954 32767 3 0x4000090 fsleep syz-executor 90681 521006 71698 32767 2 0x10 syz-executor 90681 20651 71698 32767 7 0x4000010 syz-executor 11505 506684 4972 32767 2 0x10 syz-executor 11505 185765 4972 32767 3 0x4000090 fsleep syz-executor 48449 423416 57460 32767 2 0x10 syz-executor 48449 264574 57460 32767 3 0x4000090 fsleep syz-executor 10585 521188 2202 32767 3 0x90 nanoslp syz-executor 10585 178463 2202 32767 3 0x4000090 kqread syz-executor 10585 440699 2202 32767 3 0x4000090 fsleep syz-executor 4972 257627 45378 32767 3 0x90 nanoslp syz-executor 45378 450936 17309 0 3 0x82 wait syz-executor 57460 232263 52310 32767 3 0x90 nanoslp syz-executor 52310 2015 17309 0 3 0x82 wait syz-executor 65695 495999 30291 32767 3 0x10 biowait syz-executor 97954 185068 50528 32767 3 0x90 nanoslp syz-executor 71698 365138 72417 32767 3 0x90 nanoslp syz-executor 50528 30868 17309 0 3 0x82 wait syz-executor 30291 280350 17309 0 3 0x82 wait syz-executor 2202 518449 1776 32767 3 0x90 nanoslp syz-executor 40770 24660 62597 32767 3 0x90 nanoslp syz-executor 53249 95986 26519 32767 3 0x90 nanoslp syz-executor 26519 1118 17309 0 3 0x82 wait syz-executor 72417 203744 17309 0 3 0x82 wait syz-executor 62597 181304 17309 0 3 0x82 wait syz-executor 1776 49660 17309 0 3 0x82 wait syz-executor 38880 91502 0 0 3 0x14200 bored sosplice 17309 23908 24684 0 3 0x82 kqread syz-executor 24684 464759 54961 0 3 0x10008a sigsusp ksh 54961 162640 1683 0 3 0x98 kqread sshd-session 1683 62983 55340 0 3 0x92 kqread sshd-session 1730 205408 1 0 3 0x100083 ttyin getty 55340 344748 1 0 3 0x88 kqread sshd 36059 39650 66318 73 3 0x1100010 biowait syslogd 66318 111403 1 0 3 0x100082 sbwait syslogd 36053 437763 1 0 3 0x100080 kqread resolvd 45523 394977 29483 77 3 0x100092 kqread dhcpleased 64865 46729 29483 77 3 0x100092 kqread dhcpleased 29483 396461 1 0 3 0x80 kqread dhcpleased 87633 293548 0 0 3 0x14200 bored smr 5262 469375 0 0 2 0x14200 zerothread 2605 100465 0 0 3 0x14200 aiodoned aiodoned 4075 243650 0 0 3 0x14200 syncer update 91863 7089 0 0 3 0x14200 cleaner cleaner 22236 361982 0 0 3 0x14200 reaper reaper 6269 218992 0 0 3 0x14200 pgdaemon pagedaemon 42255 268703 0 0 3 0x14200 bored viomb 79223 209867 0 0 3 0x40014200 acpi0 acpi0 30460 174780 0 0 3 0x40014200 idle1 54510 348226 0 0 3 0x14200 bored softnet3 5316 438081 0 0 3 0x14200 bored softnet2 77662 262410 0 0 3 0x14200 bored softnet1 89189 387167 0 0 3 0x14200 bored softnet0 97584 192468 0 0 3 0x14200 bored systqmp 78361 261411 0 0 3 0x14200 bored systq 98018 150797 0 0 3 0x14200 tmoslp softclockmp 38399 114320 0 0 3 0x40014200 tmoslp softclock 29982 126164 0 0 3 0x40014200 idle0 1 379405 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 (0xfffffd806908abb8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_extract+0xac sys/arch/amd64/amd64/pmap.c:1567 #4 uvm_fault_upper_lookup+0x189 sys/uvm/uvm_fault.c:860 #5 uvm_fault+0x169 sys/uvm/uvm_fault.c:605 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 50207 (syz-executor) thread 0xffff800036bcb470 (50427) shared rwlock vmmaplk r = 0 (0xfffffd8077df7460) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 #2 uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 #3 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806908abb8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_extract+0xac sys/arch/amd64/amd64/pmap.c:1567 #4 uvm_fault_upper_lookup+0x189 sys/uvm/uvm_fault.c:860 #5 uvm_fault+0x169 sys/uvm/uvm_fault.c:605 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 90681 (syz-executor) thread 0xffff800036bcaa50 (20651) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff834f7918) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 __mp_acquire_count+0x58 #2 mi_switch+0x658 sys/kern/sched_bsd.c:460 #3 sleep_finish+0x219 sys/kern/kern_synch.c:416 #4 biowait+0xc1 sys/kern/vfs_bio.c:1254 #5 bwrite+0x2e2 sys/kern/vfs_bio.c:766 #6 VOP_BWRITE+0x60 sys/kern/vfs_vops.c:646 #7 ufs_direnter+0x7d1 sys/ufs/ufs/ufs_lookup.c:833 #8 ufs_makeinode+0x51e sys/ufs/ufs/ufs_vnops.c:1764 #9 ufs_symlink+0x54 sys/ufs/ufs/ufs_vnops.c:1293 #10 VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 #11 dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 #12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8053c2ac48) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x171 sys/ufs/ufs/ufs_ihash.c:95 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #9 ufs_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1728 #10 ufs_symlink+0x54 sys/ufs/ufs/ufs_vnops.c:1293 #11 VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 #12 dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 Process 65695 (syz-executor) thread 0xffff800036bc8a70 (495999) exclusive rrwlock inode r = 0 (0xfffffd8053c2aa28) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vget+0x2bd sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x171 sys/ufs/ufs/ufs_ihash.c:95 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80625f7818) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 36059 (syslogd) thread 0xffff8000ffffd450 (39650) exclusive rrwlock inode r = 0 (0xfffffd806e338c50) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2927 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10210 10028K 10036K 166960K 11665 0 pcb 17 12K 12K 166960K 17 0 rtable 234 6K 7K 166960K 4088 0 pf 31 16K 16K 166960K 289 0 ifaddr 42 9K 9K 166960K 546 0 ifgroup 50 2K 2K 166960K 558 0 sysctl 3 1K 3K 166960K 4 0 counters 64 36K 36K 166960K 314 0 ioctlops 0 0K 2K 166960K 167 0 iov 0 0K 16K 166960K 82 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1469 92K 92K 166960K 4073 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 27 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 44 0 dirhash 15 2K 3K 166960K 39 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 25 93K 165K 166960K 3329 0 sigio 0 0K 0K 166960K 14 0 proc 56 78K 176K 166960K 4041 0 subproc 104 6K 13K 166960K 2535 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 312 0 in_multi 99 7K 7K 166960K 1509 0 ether_multi 1 0K 0K 166960K 8 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 2184 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 255 74K 140K 166960K 22955 0 UVM aobj 55 6K 6K 166960K 60 0 pinsyscall 46 92K 129K 166960K 7510 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 78 0 NDP 23 1K 2K 166960K 397 0 temp 75 6824K 6889K 166960K 29523 0 kqueue 15 24K 28K 166960K 219 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 120 436 0 432 3 2 1 3 0 8 0 rtentry 112 1474 0 1364 8 4 4 4 0 8 0 unpcb 144 1309 0 1291 12 11 1 4 0 8 0 syncache 336 10 0 10 7 7 0 1 0 8 0 tcpqe 32 5 0 5 3 3 0 1 0 8 0 tcpcb 808 664 0 657 19 18 1 8 0 8 0 arp 120 267 0 249 1 0 1 1 0 8 0 ipq 40 6 0 4 3 2 1 1 0 8 0 ipqe 40 52 0 50 3 2 1 1 0 8 0 inpcb 336 2227 0 2215 39 37 2 12 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 136 400 0 376 1 0 1 1 0 8 0 kcovpl 48 195 0 187 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 5976 0 5521 97 68 29 30 0 8 0 art_table 32 5977 0 5521 5 1 4 4 0 8 0 art_node 16 1473 0 1373 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 6 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 41 0 31 1 0 1 1 0 8 0 shmpl 112 57 0 5 2 0 2 2 0 8 0 dirhash 1024 36 0 16 3 0 3 3 0 8 0 dino2pl 256 3545 0 1702 116 0 116 116 0 8 0 ffsino 272 3545 0 1702 124 1 123 123 0 8 0 nchpl 144 5281 0 3357 72 0 72 72 0 8 0 uvmvnodes 80 6089 0 0 125 0 125 125 0 8 0 vnodes 216 6089 0 0 339 0 339 339 0 8 0 namei 1024 30437 0 30436 17 16 1 2 0 8 0 percpumem 16 171 0 125 1 0 1 1 0 8 0 kstatmem 264 272 0 250 3 1 2 2 0 8 0 scxspl 216 44637 0 44635 18 16 2 8 1 8 1 plimitpl 152 828 0 802 2 0 2 2 0 8 0 sigapl 424 3226 0 3170 10 2 8 9 0 8 0 futexpl 64 15629 0 15624 14 13 1 1 0 8 0 knotepl 120 757 0 0 18 0 18 18 0 8 0 kqueuepl 216 467 0 454 7 6 1 5 0 8 0 pipepl 320 776 0 748 12 7 5 5 0 8 0 fdescpl 496 3207 0 3170 11 5 6 7 0 8 0 filepl 152 15412 0 15160 29 16 13 18 0 8 1 lockfpl 104 429 0 427 2 1 1 2 0 8 0 lockfspl 48 111 0 109 1 0 1 1 0 8 0 sessionpl 144 144 0 128 1 0 1 1 0 8 0 pgrppl 48 356 0 332 1 0 1 1 0 8 0 ucredpl 104 2445 0 2426 1 0 1 1 0 8 0 zombiepl 144 3170 0 3170 1 0 1 1 0 8 1 processpl 1160 3226 0 3170 11 5 6 6 0 8 0 procpl 648 4996 0 4933 11 4 7 7 0 8 0 srpgc 96 14 0 14 7 7 0 1 0 8 0 sosppl 168 17 0 17 9 8 1 1 0 8 1 sockpl 664 4051 0 4017 61 57 4 20 0 8 0 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 304 0 0 29 4 25 29 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 1460 0 0 86 0 86 86 0 8 0 bufpl 280 9756 0 2436 523 0 523 523 0 8 0 anonpl 24 468496 0 463276 103 23 80 91 0 185 21 amapchunkpl 152 72919 0 72274 69 32 37 50 0 158 10 amappl16 200 7009 0 6959 56 52 4 17 0 8 0 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 353 0 343 1 0 1 1 0 8 0 amappl13 176 12 0 12 1 1 0 1 0 8 0 amappl12 168 5822 0 5786 8 6 2 3 0 8 0 amappl11 160 120 0 110 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 192 0 191 2 1 1 1 0 8 0 amappl8 136 25 0 23 1 0 1 1 0 8 0 amappl7 128 367 0 356 1 0 1 1 0 8 0 amappl6 120 1390 0 1388 1 0 1 1 0 8 0 amappl5 112 647 0 638 1 0 1 1 0 8 0 amappl4 104 651 0 634 1 0 1 1 0 8 0 amappl3 96 12027 0 11917 6 2 4 4 0 8 0 amappl2 88 3667 0 3588 3 1 2 3 0 8 0 amappl1 80 24052 0 23504 15 1 14 14 0 8 0 amappl 88 21656 0 21454 9 4 5 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 59 0 5 1 0 1 1 0 8 0 uaddrrnd 24 3207 0 3170 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3207 0 3170 1 0 1 1 0 8 0 vmmpekpl 168 28852 0 28772 6 1 5 5 0 8 0 vmmpepl 168 207132 0 205076 159 65 94 114 0 357 2 vmsppl 440 3206 0 3170 13 7 6 7 0 8 0 rwobjpl 56 61225 0 54181 109 8 101 101 0 8 0 pdppl 4096 6421 0 6340 464 367 97 117 0 8 16 pvpl 32 47579 0 0 381 1 380 380 0 265 0 pmappl 248 3206 0 3170 9 6 3 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1009 0 520 15 0 15 15 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: 0x797c06e175f0, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp 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 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:654 comcnputc(800,20) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,20) at comcnputc+0x250 sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(31) at db_putchar+0x524 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(31) at db_putchar+0x524 sys/ddb/db_output.c:153 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff8309051d) at db_printf+0x9b fault(ffffffff8303b4bc) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80002a085ba0,8) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80002a085ba0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff80002a085c90) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 end trace frame: 0xffff80002a085d00, count: 0 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 x86_bus_space_io_read_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:654 comcnputc(800,20) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,20) at comcnputc+0x250 sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(31) at db_putchar+0x524 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(31) at db_putchar+0x524 sys/ddb/db_output.c:153 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff8309051d) at db_printf+0x9b fault(ffffffff8303b4bc) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80002a085ba0,8) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80002a085ba0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff80002a085c90) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281 VOP_WRITE(fffffd8070e33ca8,ffff80002a085d28,8,fffffd807f7d3478) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd8070e33ca8,ffff800029fe6000,208,0,1,ad8a21c5ed4bad1b,ffff80002a085e50,fffffd8070e33ca8,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324 ufs_symlink(ffff80002a085e50) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309 VOP_SYMLINK(fffffd807287cd08,ffff80002a085fd0,ffff80002a086000,ffff80002a085f00,ffff800029fe6000) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432 dosymlinkat(ffff800036bcaa50,20000340,ffffff9c,20000580) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806 syscall(ffff80002a086180) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a086180) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3a3df2fb290, count: -21