*cpu0: uvm_fault(0xfffffd806691f5d8, 0x65c0, 0, 2) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x740f8e305c20, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c4ef340 rbx 0 rdx 0 rcx 0xffff800033409ca8 rax 0x2a r8 0xffff80003c4ef270 r9 0 r10 0x32e29772ea341c6e r11 0x27f663db7191391a r12 0 r13 0 r14 0 r15 0 rip 0xffffffff822644c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c4ef2c0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=106283 pid=15797 tcnt=1 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000334087e8,0xffffffff838b3408 process=0xffff80003c4a5d08 user=0xffff80003c4ea000, vmspace=0xfffffd806ef7c7a8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *15797 106283 77348 0 7 0 syz-executor 94829 14655 69795 0 2 0 syz-executor 93234 254208 19408 0 2 0 syz-executor 93234 245274 19408 0 3 0x4000080 fsleep syz-executor 52536 476165 59818 0 2 0 syz-executor 52536 62427 59818 0 3 0x4000080 fsleep syz-executor 93121 94087 89135 0 4 0x82000 syz-executor 93121 1375 89135 0 2 0x4082000 syz-executor 93121 41403 89135 0 3 0x4002000 suspend syz-executor 11230 284688 2431 0 2 0x4000000 syz-executor 11230 349395 2431 0 3 0x4000080 kqread syz-executor 11230 46889 2431 0 3 0x4000080 sbwait syz-executor 11230 424241 2431 0 7 0x4000000 syz-executor 72444 521681 31281 0 4 0x82000 syz-executor 72444 133754 31281 0 2 0x4082000 syz-executor 72444 507083 31281 0 3 0x4082000 inode syz-executor 72444 154447 31281 0 3 0x4082000 inode syz-executor 72444 125907 31281 0 3 0x4002000 suspend syz-executor 75708 249051 0 0 3 0x14280 nfsidl nfsio 19846 440502 0 0 3 0x14280 nfsidl nfsio 32287 205847 0 0 3 0x14280 nfsidl nfsio 37721 282756 0 0 3 0x14280 nfsidl nfsio 617 212005 0 0 3 0x14280 nfsidl nfsio 73846 448772 0 0 3 0x14280 nfsidl nfsio 99577 224588 0 0 3 0x14280 nfsidl nfsio 36625 31587 0 0 3 0x14280 nfsidl nfsio 17330 183896 0 0 3 0x14280 nfsidl nfsio 99188 239930 0 0 3 0x14280 nfsidl nfsio 22774 235613 0 0 3 0x14280 nfsidl nfsio 78202 134612 0 0 3 0x14280 nfsidl nfsio 20945 187428 0 0 3 0x14280 nfsidl nfsio 24586 236925 0 0 3 0x14280 nfsidl nfsio 23567 43752 0 0 3 0x14280 nfsidl nfsio 37160 170634 0 0 3 0x14280 nfsidl nfsio 87972 94634 0 0 3 0x14280 nfsidl nfsio 27595 334065 0 0 3 0x14280 nfsidl nfsio 2303 139510 0 0 3 0x14280 nfsidl nfsio 46805 49066 0 0 3 0x14280 nfsidl nfsio 63687 189388 0 0 3 0x14200 bored sosplice 89135 425080 69508 0 2 0xc82 syz-executor 12601 127534 69508 0 3 0x82 wait syz-executor 69795 9394 69508 0 2 0xc82 syz-executor 2431 156754 69508 0 2 0xc82 syz-executor 19408 488721 69508 0 3 0x82 nanoslp syz-executor 77348 48109 69508 0 3 0x82 nanoslp syz-executor 31281 498164 69508 0 3 0x82 nanoslp syz-executor 59818 21798 69508 0 2 0xc82 syz-executor 69508 446129 61656 0 3 0x82 kqread syz-executor 61656 491167 24333 0 3 0x10008a sigsusp ksh 24333 251910 84433 0 3 0x98 kqread sshd-session 84433 360149 31566 0 3 0x92 kqread sshd-session 35783 121716 1 0 3 0x100083 ttyin getty 31566 365205 1 0 3 0x88 kqread sshd 65418 218905 3038 74 3 0x1100092 bpf pflogd 3038 497487 1 0 3 0x80 sbwait pflogd 31007 475802 63814 73 3 0x1100090 kqread syslogd 63814 271023 1 0 3 0x100082 sbwait syslogd 12956 229154 1 0 3 0x100080 kqread resolvd 38493 357859 76348 77 3 0x100092 kqread dhcpleased 25930 77448 76348 77 3 0x100092 kqread dhcpleased 76348 82864 1 0 3 0x80 kqread dhcpleased 23684 342630 0 0 3 0x14200 bored smr 51681 77521 0 0 3 0x14200 pgzero zerothread 31205 399886 0 0 3 0x14200 aiodoned aiodoned 96739 237423 0 0 3 0x14200 syncer update 82988 87296 0 0 3 0x14200 cleaner cleaner 33336 95360 0 0 3 0x14200 reaper reaper 21580 481176 0 0 3 0x14200 pgdaemon pagedaemon 37282 30036 0 0 3 0x14200 bored viomb 38455 158588 0 0 3 0x40014200 acpi0 acpi0 29294 334940 0 0 3 0x40014200 idle1 97543 6692 0 0 3 0x14200 bored softnet7 77790 109881 0 0 3 0x14200 bored softnet6 76519 361185 0 0 3 0x14200 bored softnet5 76032 204052 0 0 3 0x14200 bored softnet4 75897 430632 0 0 3 0x14200 bored softnet3 20369 23287 0 0 3 0x14200 bored softnet2 54657 468900 0 0 3 0x14200 bored softnet1 81396 271052 0 0 2 0x14200 softnet0 88622 285840 0 0 3 0x14200 bored systqmp 96637 496056 0 0 3 0x14200 bored systq 6911 112091 0 0 3 0x14200 tmoslp softclockmp 71624 427586 0 0 2 0x40014200 softclock 28276 407905 0 0 3 0x40014200 idle0 1 508285 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff839b5fc8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 uvm_fault_upper+0x3e2 sys/uvm/uvm_fault.c:1189 #4 uvm_fault+0x198 sys/uvm/uvm_fault.c:685 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #7 recall_trap+0x8 Process 15797 (syz-executor) thread 0xffff800033409ca8 (106283) exclusive rwlock amaplk r = 0 (0xfffffd806c66d370) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 uvm_fault_check+0x597 sys/uvm/uvm_fault.c:862 #3 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #5 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #6 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806ef7c8a8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1924 #3 uvm_fault_check+0x4a sys/uvm/uvm_fault.c:741 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #7 recall_trap+0x8 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff839b5fc8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 uvm_fault_upper+0x3e2 sys/uvm/uvm_fault.c:1189 #4 uvm_fault+0x198 sys/uvm/uvm_fault.c:685 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #7 recall_trap+0x8 Process 72444 (syz-executor) thread 0xffff80003c4a27f8 (133754) exclusive rrwlock inode r = 0 (0xfffffd806f577c58) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 Process 72444 (syz-executor) thread 0xffff80003a0374f8 (507083) exclusive rrwlock inode r = 0 (0xfffffd80669fb330) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 uipc_bind+0x328 sys/kern/uipc_usrreq.c:371 #8 sys_bind+0x2f6 sys/kern/uipc_syscalls.c:190 #9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #10 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10216 11049K 11107K 166960K 11549 0 pcb 17 12K 12K 166960K 68 0 rtable 201 8K 8K 166960K 339 0 pf 39 18K 21K 166960K 157 0 ifaddr 42 7K 7K 166960K 66 0 ifgroup 59 2K 2K 166960K 99 0 sysctl 2 1K 9K 166960K 7 0 counters 70 37K 38K 166960K 122 0 ioctlops 0 0K 4K 166960K 1605 0 iov 0 0K 16K 166960K 12 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1399 88K 89K 166960K 1621 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 17 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 431 0 sigio 1 0K 0K 166960K 7 0 proc 72 115K 147K 166960K 560 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 52 0 in_multi 91 6K 6K 166960K 123 0 ether_multi 1 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 439 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 255 180K 184K 166960K 5697 0 UVM aobj 7 2K 2K 166960K 9 0 pinsyscall 43 86K 101K 166960K 1559 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 16 0 NDP 13 0K 1K 166960K 45 0 temp 77 8648K 8767K 166960K 10667 0 kqueue 14 22K 29K 166960K 105 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 64 0 61 1 0 1 1 0 8 0 rtentry 176 110 0 28 5 0 5 5 0 8 0 unpcb 144 179 0 159 2 0 2 2 0 8 1 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 125 0 119 4 0 4 4 0 8 3 arp 128 13 0 3 1 0 1 1 0 8 0 inpcb 328 337 0 326 5 0 5 5 0 8 3 nd6 144 20 0 2 1 0 1 1 0 8 0 pkpcb 40 6 0 6 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 23 0 23 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 1 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfstitem 24 39 0 1 1 0 1 1 0 8 0 pfstkey 128 39 0 1 2 0 2 2 0 8 0 pfstate 384 38 0 1 4 0 4 4 0 8 0 pfrule 1344 27 0 21 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 520 0 123 29 0 29 29 0 8 2 art_table 40 522 0 123 5 0 5 5 0 8 0 art_node 32 110 0 37 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 14 0 4 1 0 1 1 0 8 0 shmpl 112 6 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2140 0 636 95 0 95 95 0 8 0 ffsino 296 2140 0 636 117 0 117 117 0 8 0 nchpl 144 2755 0 1066 64 0 64 64 0 8 0 rtmask 32 10 0 10 1 0 1 1 0 8 1 uvmvnodes 80 2365 0 0 49 0 49 49 0 8 0 vnodes 216 2365 0 0 132 0 132 132 0 8 0 namei 1024 9346 0 9344 2 1 1 2 0 8 0 percpumem 16 76 0 26 1 0 1 1 0 8 0 kstatmem 264 62 0 32 3 0 3 3 0 8 1 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 12563 0 12563 3 2 1 2 1 8 1 plimitpl 152 142 0 124 1 0 1 1 0 8 0 sigapl 424 768 0 693 9 0 9 9 0 8 0 knotepl 120 314 0 0 10 0 10 10 0 8 0 kqueuepl 224 173 0 161 3 0 3 3 0 8 2 pipepl 344 206 0 178 9 0 9 9 0 8 6 fdescpl 528 725 0 693 3 0 3 3 0 8 0 filepl 160 3802 0 3576 15 0 15 15 0 8 4 lockfpl 104 155 0 153 1 0 1 1 0 8 0 lockfspl 48 39 0 37 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 37 0 20 1 0 1 1 0 8 0 ucredpl 104 369 0 356 1 0 1 1 0 8 0 zombiepl 144 694 0 693 1 0 1 1 0 8 0 processpl 1232 768 0 693 6 0 6 6 0 8 0 procpl 664 1251 0 1165 8 0 8 8 0 8 0 sockpl 752 593 0 559 8 0 8 8 0 8 4 mcl64k 65536 2 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 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 110 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 29 0 0 4 0 4 4 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 172 0 0 11 0 11 11 0 8 0 bufpl 280 5207 0 125 363 0 363 363 0 8 0 anonpl 32 10261 0 0 84 1 83 83 0 246 0 amapchunkpl 152 17490 0 16961 28 3 25 25 0 158 3 amappl16 200 2821 0 2646 26 2 24 24 0 8 2 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 122 0 109 1 0 1 1 0 8 0 amappl13 176 6 0 6 2 2 0 1 0 8 0 amappl12 168 1391 0 1359 3 1 2 2 0 8 0 amappl11 160 51 0 37 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 253 0 253 1 1 0 1 0 8 0 amappl8 136 20 0 18 1 0 1 1 0 8 0 amappl7 128 111 0 99 1 0 1 1 0 8 0 amappl6 120 184 0 181 1 0 1 1 0 8 0 amappl5 112 153 0 144 1 0 1 1 0 8 0 amappl4 104 323 0 304 1 0 1 1 0 8 0 amappl3 96 2961 0 2857 4 1 3 3 0 8 0 amappl2 88 971 0 891 2 0 2 2 0 8 0 amappl1 80 9957 0 9350 15 0 15 15 0 8 0 amappl 88 4942 0 4764 5 0 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 8 0 2 1 0 1 1 0 8 0 uaddrrnd 24 725 0 693 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 725 0 693 1 0 1 1 0 8 0 vmmpekpl 168 7753 0 7715 3 0 3 3 0 8 0 vmmpepl 168 52441 0 50257 109 0 109 109 0 357 0 vmsppl 488 724 0 693 5 0 5 5 0 8 1 rwobjpl 80 19267 0 15803 78 1 77 77 0 8 0 pdppl 4096 1458 0 1386 102 30 72 84 0 8 0 pvpl 32 18734 0 0 153 1 152 152 0 265 0 pmappl 256 724 0 693 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 276 0 33 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83830ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:674 acpitimer_delay(1) at acpitimer_delay+0x57 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline] acpitimer_delay(1) at acpitimer_delay+0x57 sys/dev/acpi/acpitimer.c:120 comcnputc(800,2c) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(2c) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(2c) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29a5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83313e96) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833d6292) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c500f00,65c0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c500f00) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:489 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff80003c501260, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83830ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:674 acpitimer_delay(1) at acpitimer_delay+0x57 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline] acpitimer_delay(1) at acpitimer_delay+0x57 sys/dev/acpi/acpitimer.c:120 comcnputc(800,2c) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(2c) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(2c) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x29a5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83313e96) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833d6292) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80003c500f00,65c0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80003c500f00) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:489 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 syscall(ffff80003c501340) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c501340) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbc39a75e9b0, count: -17 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x740f8e305c20, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x740f8e305c20, count: -1