*cpu1: uvm_fault(0xfffffd806ba668d0, 0x8, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7ec19d96a540, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a2183b0 rbx 0 rdx 0 rcx 0xffff80002a252010 rax 0x2a r8 0xffff80002a2182e0 r9 0x4 r10 0xc428a88db4b7c734 r11 0x1a79ca1957d9c0ec r12 0 r13 0 r14 0 r15 0 rip 0xffffffff825164d7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a218330 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x660 ddb{0}> show proc PROC (syz-executor.6) tid=518263 pid=9102 tcnt=1 stat=onproc flags process=10 proc=0 runpri=81, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a252d58,0xffff80002a251030 process=0xffff8000ffff0488 user=0xffff80002a213000, vmspace=0xfffffd806ba66e10 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND * 9102 518263 36764 32767 7 0x10 syz-executor.6 56068 322894 36350 32767 2 0x10 syz-executor.5 56068 370226 36350 32767 3 0x4000090 fsleep syz-executor.5 85948 106843 48448 32767 2 0x10 syz-executor.4 85948 212059 48448 32767 7 0x4000010 syz-executor.4 82034 205609 95659 32767 2 0x10 syz-executor.3 95659 404495 21924 0 3 0x82 wait syz-executor.3 54484 42755 81881 32767 3 0x90 nanoslp syz-executor.1 81881 216177 21924 0 3 0x82 wait syz-executor.1 49077 181957 21924 0 3 0x82 wait syz-executor.2 48448 143980 77258 32767 3 0x90 nanoslp syz-executor.4 77258 124790 21924 0 3 0x82 wait syz-executor.4 76952 42166 89284 32767 3 0x10 biowait syz-executor.0 89284 213399 21924 0 3 0x82 wait syz-executor.0 55865 445 20020 32767 2 0x10 syz-executor.7 20020 91120 21924 0 3 0x82 wait syz-executor.7 36764 38383 47 32767 3 0x90 nanoslp syz-executor.6 47 415443 21924 0 3 0x82 wait syz-executor.6 13437 227762 0 0 3 0x14200 bored sosplice 36350 58909 4633 32767 3 0x90 nanoslp syz-executor.5 4633 472343 21924 0 3 0x82 wait syz-executor.5 21924 144969 93482 0 3 0x2000082 kqread syz-fuzzer 21924 448922 93482 0 3 0x6000082 nanoslp syz-fuzzer 21924 519510 93482 0 3 0x6000082 thrsleep syz-fuzzer 21924 445115 93482 0 3 0x6000082 thrsleep syz-fuzzer 21924 291848 93482 0 3 0x6000082 wait syz-fuzzer 21924 498127 93482 0 3 0x6000082 wait syz-fuzzer 21924 290940 93482 0 3 0x6000082 wait syz-fuzzer 21924 276715 93482 0 3 0x6000082 thrsleep syz-fuzzer 21924 75692 93482 0 3 0x6000082 wait syz-fuzzer 21924 124163 93482 0 3 0x6000082 wait syz-fuzzer 21924 142808 93482 0 3 0x6000082 thrsleep syz-fuzzer 21924 508476 93482 0 3 0x6000082 wait syz-fuzzer 21924 400237 93482 0 3 0x6000082 wait syz-fuzzer 21924 369088 93482 0 3 0x6000082 thrsleep syz-fuzzer 21924 135900 93482 0 3 0x6000082 thrsleep syz-fuzzer 21924 135684 93482 0 3 0x6000082 wait syz-fuzzer 93482 353986 58141 0 3 0x10008a sigsusp ksh 58141 430239 50023 0 3 0x9a kqread sshd 73229 280182 1 0 3 0x100083 ttyin getty 50023 70678 1 0 3 0x88 kqread sshd 35263 79352 9109 73 3 0x1100090 kqread syslogd 9109 326791 1 0 3 0x100082 netio syslogd 95869 280442 1 0 3 0x100080 kqread resolvd 31313 3765 8531 77 3 0x100092 kqread dhcpleased 47952 510958 8531 77 3 0x100092 kqread dhcpleased 8531 509364 1 0 3 0x80 kqread dhcpleased 16299 87096 0 0 3 0x14200 bored smr 12693 18455 0 0 2 0x14200 zerothread 31043 43823 0 0 3 0x14200 aiodoned aiodoned 47872 517524 0 0 3 0x14200 syncer update 87474 284682 0 0 3 0x14200 cleaner cleaner 9509 275290 0 0 3 0x14200 reaper reaper 85365 2274 0 0 3 0x14200 pgdaemon pagedaemon 1044 359156 0 0 3 0x14200 bored viomb 5866 29464 0 0 3 0x40014200 acpi0 acpi0 74366 171237 0 0 3 0x40014200 idle1 77216 302744 0 0 3 0x14200 bored softnet3 23716 117466 0 0 3 0x14200 bored softnet2 29814 98666 0 0 3 0x14200 bored softnet1 64062 372921 0 0 3 0x14200 bored softnet0 96541 307090 0 0 3 0x14200 bored systqmp 10967 421305 0 0 3 0x14200 bored systq 33937 513813 0 0 3 0x14200 tmoslp softclockmp 74723 466017 0 0 3 0x40014200 tmoslp softclock 91107 359926 0 0 3 0x40014200 idle0 1 314317 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 (0xfffffd806ba3a7d0) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 pmap_enter+0x1c3 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:423 [inline] #3 pmap_enter+0x1c3 sys/arch/amd64/amd64/pmap.c:2716 #4 uvm_fault_lower_lookup+0x2a4 sys/uvm/uvm_fault.c:1192 #5 uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 #6 uvm_fault+0x238 #7 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 9102 (syz-executor.6) thread 0xffff80002a252010 (518263) exclusive rwlock uobjlk r = 0 (0xfffffd8071e68c88) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 uvm_fault_lower_lookup+0x4a sys/uvm/uvm_fault.c:1126 #3 uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 #4 uvm_fault+0x238 #5 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806ba66f08) #0 witness_lock+0x447 #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+0x86 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806ba3a7d0) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 pmap_enter+0x1c3 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:423 [inline] #3 pmap_enter+0x1c3 sys/arch/amd64/amd64/pmap.c:2716 #4 uvm_fault_lower_lookup+0x2a4 sys/uvm/uvm_fault.c:1192 #5 uvm_fault_lower+0x63 sys/uvm/uvm_fault.c:1227 #6 uvm_fault+0x238 #7 upageflttrap+0x86 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x226 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 85948 (syz-executor.4) thread 0xffff80002a251020 (212059) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82df9bb0) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x46f sys/kern/sched_bsd.c:470 #3 sleep_finish+0x19b sys/kern/kern_synch.c:414 #4 biowait+0x91 sys/kern/vfs_bio.c:1254 #5 bwrite+0x21c sys/kern/vfs_bio.c:766 #6 VOP_BWRITE+0x4e sys/kern/vfs_vops.c:640 #7 ufs_direnter+0x646 sys/ufs/ufs/ufs_lookup.c:833 #8 ufs_makeinode+0x499 sys/ufs/ufs/ufs_vnops.c:1779 #9 ufs_symlink+0x4b sys/ufs/ufs/ufs_vnops.c:1308 #10 VOP_SYMLINK+0xd4 sys/kern/vfs_vops.c:426 #11 dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1801 #12 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #12 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80738734d8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vget+0x200 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+0x1c5 sys/ufs/ffs/ffs_alloc.c:393 #9 ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1743 #10 ufs_symlink+0x4b sys/ufs/ufs/ufs_vnops.c:1308 #11 VOP_SYMLINK+0xd4 sys/kern/vfs_vops.c:426 #12 dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1801 #13 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #13 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 Process 76952 (syz-executor.0) thread 0xffff80002bc95ff0 (42166) exclusive rrwlock inode r = 0 (0xfffffd80738732b8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x1c5 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfb sys/ufs/ufs/ufs_vnops.c:1127 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3069 #10 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #10 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806bbc76f8) #0 witness_lock+0x447 #1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418 #6 namei+0x55a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3054 #8 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #8 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10209 6412K 6419K 166960K 11376 0 pcb 15 16K 18K 166960K 21 0 rtable 242 6K 7K 166960K 2394 0 pf 29 8K 8K 166960K 87 0 ifaddr 44 15K 16K 166960K 166 0 ifgroup 50 2K 2K 166960K 166 0 sysctl 4 1K 2K 166960K 5 0 counters 64 36K 36K 166960K 122 0 ioctlops 0 0K 2K 166960K 330 0 iov 0 0K 32K 166960K 2230 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1279 80K 80K 166960K 4914 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 312 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 2898 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 21 77K 125K 166960K 20921 0 sigio 0 0K 0K 166960K 1134 0 proc 56 78K 127K 166960K 2518 0 subproc 104 6K 6K 166960K 481 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 2257 0 in_multi 99 7K 7K 166960K 703 0 ether_multi 1 0K 0K 166960K 26 0 mrt 1 0K 0K 166960K 2 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 3847 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 424 90K 107K 166960K 208262 0 UVM aobj 131 4K 4K 166960K 136 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 561 0 NDP 11 0K 2K 166960K 114 0 temp 74 6708K 6836K 166960K 53760 0 kqueue 12 18K 30K 166960K 2124 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 1464 0 1461 16 15 1 5 0 8 0 rtentry 112 468 0 354 4 0 4 4 0 8 0 unpcb 144 19777 0 19764 153 147 6 9 0 8 5 syncache 320 270 0 270 32 31 1 1 0 8 1 sackhl 24 2 0 2 2 2 0 1 0 8 0 tcpqe 32 224 0 224 31 30 1 1 0 8 1 tcpcb 808 10248 0 10196 170 158 12 16 0 8 6 arp 120 80 0 61 1 0 1 1 0 8 0 ipq 40 29 0 29 12 11 1 1 0 8 1 ipqe 40 253 0 253 12 11 1 1 0 8 1 inpcb 376 19416 0 19357 214 200 14 21 0 8 7 nd6 136 145 0 118 2 0 2 2 0 8 0 kcovpl 48 37 0 29 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1841 0 1368 35 5 30 30 0 8 0 art_table 32 1842 0 1368 4 0 4 4 0 8 0 art_node 16 467 0 363 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 9 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 2893 0 2883 1 0 1 1 0 8 0 shmpl 112 133 0 5 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 28528 0 27044 94 0 94 94 0 8 0 ffsino 272 28528 0 27044 100 0 100 100 0 8 0 nchpl 144 56403 0 54758 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 183286 0 183284 3 2 1 2 0 8 0 percpumem 16 75 0 29 1 0 1 1 0 8 0 kstatmem 264 80 0 58 2 0 2 2 0 8 0 scxspl 216 183032 0 183031 76 72 4 8 1 8 3 plimitpl 152 3341 0 3318 28 26 2 2 0 8 1 sigapl 424 21162 0 21110 7 0 7 7 0 8 0 futexpl 64 172399 0 172398 6 5 1 1 0 8 0 knotepl 120 891 0 0 13 3 10 11 0 8 0 kqueuepl 216 5628 0 5620 104 103 1 8 0 8 0 pipepl 320 3816 0 3788 83 75 8 11 0 8 5 fdescpl 496 21143 0 21111 7 2 5 6 0 8 0 filepl 152 132377 0 132141 176 160 16 20 0 8 4 lockfpl 104 3083 0 3079 1 0 1 1 0 8 0 lockfspl 48 880 0 876 1 0 1 1 0 8 0 sessionpl 144 52 0 36 1 0 1 1 0 8 0 pgrppl 48 212 0 196 1 0 1 1 0 8 0 ucredpl 104 20280 0 20262 1 0 1 1 0 8 0 zombiepl 144 21112 0 21110 1 0 1 1 0 8 0 processpl 1136 21162 0 21110 5 0 5 5 0 8 0 procpl 680 58874 0 58805 11 3 8 9 0 8 0 srpgc 96 1 0 1 1 1 0 1 0 8 0 sosppl 168 342 0 335 13 12 1 1 0 8 0 sockpl 584 42108 0 42037 241 226 15 21 0 8 8 mcl64k 65536 26 0 0 4 1 3 3 0 8 0 mcl16k 16384 18 0 0 3 0 3 3 0 8 0 mcl12k 12288 34 0 0 2 0 2 2 0 8 0 mcl9k 9216 31 0 0 3 1 2 2 0 8 0 mcl8k 8192 26 0 0 3 0 3 3 0 8 0 mcl4k 4096 76 0 0 6 3 3 5 0 8 0 mcl2k2 2112 17 0 0 2 0 2 2 0 8 0 mcl2k 2048 392 0 0 29 17 12 29 0 8 0 mtagpl 96 18 0 0 1 0 1 1 0 8 0 mbufpl 256 7551 0 0 420 0 420 420 0 8 0 bufpl 280 44430 0 38112 452 0 452 452 0 8 0 anonpl 24 2201644 0 2189904 238 140 98 123 0 186 0 amapchunkpl 152 675779 0 674975 176 135 41 52 0 158 1 amappl16 200 47939 0 47627 252 222 30 43 0 8 7 amappl15 192 53 0 53 6 6 0 1 0 8 0 amappl14 184 305 0 285 6 4 2 2 0 8 0 amappl13 176 68 0 68 16 16 0 1 0 8 0 amappl12 168 22252 0 22214 2 0 2 2 0 8 0 amappl11 160 69 0 57 1 0 1 1 0 8 0 amappl10 152 98 0 78 1 0 1 1 0 8 0 amappl9 144 331 0 330 1 0 1 1 0 8 0 amappl8 136 1139 0 929 9 1 8 8 0 8 0 amappl7 128 349 0 325 2 0 2 2 0 8 0 amappl6 120 887 0 869 1 0 1 1 0 8 0 amappl5 112 566 0 558 1 0 1 1 0 8 0 amappl4 104 1114 0 1076 6 4 2 2 0 8 0 amappl3 96 128943 0 128861 24 20 4 4 0 8 1 amappl2 88 22763 0 22677 12 9 3 3 0 8 0 amappl1 80 83468 0 82947 22 10 12 22 0 8 0 amappl 88 206663 0 206433 7 0 7 7 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 72 135 0 5 3 0 3 3 0 8 0 uaddrrnd 24 21143 0 21111 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 21143 0 21111 1 0 1 1 0 8 0 vmmpekpl 168 167417 0 167359 4 0 4 4 0 8 0 vmmpepl 168 1235793 0 1233391 415 279 136 147 0 357 0 vmsppl 448 21142 0 21111 5 0 5 5 0 8 0 rwobjpl 56 310965 0 303438 119 8 111 114 0 8 0 pdppl 4096 42293 0 42222 533 452 81 95 0 8 10 pvpl 32 45133 0 0 365 1 364 364 0 265 0 pmappl 248 21142 0 21111 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1664 0 869 23 0 23 23 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: 0x7ec19d96a540, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffff800029cfbff0) 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_write_1(3f8,0,61) at x86_bus_space_io_write_1+0x35 sys/arch/amd64/amd64/bus_space.c:774 comcnputc(800,61) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,61) at comcnputc+0x128 sys/dev/ic/com.c:1264 cnputc(61) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(61) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20fc sys/kern/subr_prf.c:1064 db_printf(ffffffff82857680) at db_printf+0x89 sys/kern/subr_prf.c:498 db_ktrap(6,0,ffff800030adfc00) at db_ktrap+0xf9 db_printtrap sys/arch/amd64/amd64/db_interface.c:101 [inline] db_ktrap(6,0,ffff800030adfc00) at db_ktrap+0xf9 sys/arch/amd64/amd64/db_interface.c:127 kerntrap(ffff800030adfc00) at kerntrap+0x143 sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff800030adfd00) at fifo_write+0x52 sys/miscfs/fifofs/fifo_vnops.c:271 VOP_WRITE(fffffd8067e33870,ffff800030adfd98,8,fffffd807f7d70d0) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245 end trace frame: 0xffff800030adfe30, count: 0 ddb{1}> trace x86_ipi_db(ffff800029cfbff0) 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_write_1(3f8,0,61) at x86_bus_space_io_write_1+0x35 sys/arch/amd64/amd64/bus_space.c:774 comcnputc(800,61) at comcnputc+0x128 bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,61) at comcnputc+0x128 sys/dev/ic/com.c:1264 cnputc(61) at cnputc+0x4f sys/dev/cons.c:218 db_putchar(61) at db_putchar+0x3fc sys/ddb/db_output.c:155 kprintf() at kprintf+0x20fc sys/kern/subr_prf.c:1064 db_printf(ffffffff82857680) at db_printf+0x89 sys/kern/subr_prf.c:498 db_ktrap(6,0,ffff800030adfc00) at db_ktrap+0xf9 db_printtrap sys/arch/amd64/amd64/db_interface.c:101 [inline] db_ktrap(6,0,ffff800030adfc00) at db_ktrap+0xf9 sys/arch/amd64/amd64/db_interface.c:127 kerntrap(ffff800030adfc00) at kerntrap+0x143 sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b fifo_write(ffff800030adfd00) at fifo_write+0x52 sys/miscfs/fifofs/fifo_vnops.c:271 VOP_WRITE(fffffd8067e33870,ffff800030adfd98,8,fffffd807f7d70d0) at VOP_WRITE+0xc3 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd8067e33870,ffff80002a198c00,1ff,0,1,114d367b985eb8d2,ffff800030adfec0,fffffd8067e33870,78) at vn_rdwr+0xed sys/kern/vfs_vnops.c:324 ufs_symlink(ffff800030adfec0) at ufs_symlink+0x12a sys/ufs/ufs/ufs_vnops.c:1324 VOP_SYMLINK(fffffd807377bdb8,ffff800030ae0040,ffff800030ae0070,ffff800030adff70,ffff80002a198c00) at VOP_SYMLINK+0xd4 sys/kern/vfs_vops.c:426 dosymlinkat(ffff80002a251020,200000c0,3,200002c0) at dosymlinkat+0x158 sys/kern/vfs_syscalls.c:1801 syscall(ffff800030ae01f0) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff800030ae01f0) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd7a7b0d0960, count: -20