uvm_fault(0xfffffd806c4c15d8, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff827b8638 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003c43ab30 gsbase 0xffff8000299ddff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff827b8638 Starting stack trace... panic(ffffffff833e8951) at panic+464 kerntrap(ffff80003c43aa80) at kerntrap+779 alltraps_kern_meltdown() at alltraps_kern_meltdown+123 dt_ioctl_record_stop(ffff8000016ec000) at dt_ioctl_record_stop+264 dtclose(221e5f,81,2000,ffff80003bbf8d30) at dtclose+265 spec_close(ffff80003c43ac30) at spec_close+1126 VOP_CLOSE(fffffd805e69f538,81,fffffd80097fd2d8,ffff80003bbf8d30) at VOP_CLOSE+306 vn_closefile(fffffd805c3ff8f0,ffff80003bbf8d30) at vn_closefile+299 fdrop(fffffd805c3ff8f0,ffff80003bbf8d30) at fdrop+289 closef(fffffd805c3ff8f0,ffff80003bbf8d30) at closef+402 syscall(ffff80003c43ae90) at syscall+3028 Xsyscall() at Xsyscall+296 end of kernel end trace frame: 0x109c1ed5280, count: 245 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at alltraps_kern_meltdown+184: movl %ebx,%gs:1672 TID PID UID PRFLAGS PFLAGS CPU COMMAND 417829 2884 0 0 0x4000000 0 syz-executor *216588 68635 0 0x1000 0x4080000 1 syz-executor alltraps_kern_meltdown() at alltraps_kern_meltdown+184 _copyin() at _copyin+91 ffs_write(ffff80003703c1a0) at ffs_write+1897 VOP_WRITE(fffffd805c76b550,ffff80003703c358,7,fffffd80097fd2d8) at VOP_WRITE+257 vn_write(fffffd8069a36ce0,ffff80003703c358,0) at vn_write+467 dofilewritev(ffff8000fffef4d8,4,ffff80003703c358,0,ffff80003703c410) at dofilewritev+578 sys_write(ffff8000fffef4d8,ffff80003703c4c0,ffff80003703c410) at sys_write+162 syscall(ffff80003703c4c0) at syscall+3028 Xsyscall() at Xsyscall+296 end of kernel end trace frame: 0xfa994f9fd70, count: 6 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806c4c15d8, 0x0, 0, 1) -> e ddb{1}> trace alltraps_kern_meltdown() at alltraps_kern_meltdown+184 _copyin() at _copyin+91 ffs_write(ffff80003703c1a0) at ffs_write+1897 VOP_WRITE(fffffd805c76b550,ffff80003703c358,7,fffffd80097fd2d8) at VOP_WRITE+257 vn_write(fffffd8069a36ce0,ffff80003703c358,0) at vn_write+467 dofilewritev(ffff8000fffef4d8,4,ffff80003703c358,0,ffff80003703c410) at dofilewritev+578 sys_write(ffff8000fffef4d8,ffff80003703c4c0,ffff80003703c410) at sys_write+162 syscall(ffff80003703c4c0) at syscall+3028 Xsyscall() at Xsyscall+296 end of kernel end trace frame: 0xfa994f9fd70, count: -9 ddb{1}> show registers rdi 0 rsi 0 rbp 18446603337144188896 rbx 0 rdx 18446603336245285056 rcx 18446603340516095192 rax 42 r8 18446603337144188688 r9 1 r10 10425252353588431283 r11 1324104841645973185 r12 35184385901760 r13 16384 __ALIGN_SIZE+12288 r14 18446603337144189784 r15 16384 __ALIGN_SIZE+12288 rip 18446744071615660555 alltraps_kern_meltdown+184 cs 8 rflags 582 rsp 18446603337144188768 ss 16 alltraps_kern_meltdown+184: movl %ebx,%gs:1672 ddb{1}> show proc PROC (syz-executor) tid=216588 pid=68635 tcnt=2 stat=onproc flags process=1000 proc=4080000 runpri=80, usrpri=80, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000fffee2b0 scnt=1 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffee2b0,0xffff80003bbfbcc0 process=0xffff800037041d18 user=0xffff800037037000, vmspace=0xfffffd807b74f3f8 estcpu=30, cpticks=10, pctcpu=0.3, user=0, sys=9, intr=1 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 28658 226627 40676 0 2 0 syz-executor 28658 50572 40676 0 3 0x4000000 sbar syz-executor 28658 5556 40676 0 3 0x4000080 fsleep syz-executor 28658 136881 40676 0 3 0x4000080 fsleep syz-executor 251 517771 69792 0 2 0x100002 sh 73132 72639 76732 0 2 0 syz-executor 73132 121701 76732 0 2 0x4000000 syz-executor 73132 299705 76732 0 3 0x4000080 fsleep syz-executor 88148 162805 15511 -1 2 0xc90 syz-executor 88148 228964 15511 -1 3 0x4000090 fsleep syz-executor 88148 271908 15511 -1 3 0x4000090 fsleep syz-executor 88148 70108 15511 -1 3 0x4000090 fsleep syz-executor 2884 135677 7242 0 2 0 syz-executor 2884 21033 7242 0 3 0x4000080 lockf syz-executor 2884 417829 7242 0 7 0x4000000 syz-executor 2884 49579 7242 0 3 0x4000080 fsleep syz-executor 2884 330153 7242 0 3 0x4000080 fsleep syz-executor 61348 348773 2276 0 3 0x3000 suspend syz-executor 61348 313769 2276 0 2 0x4081000 syz-executor 68635 42686 27656 0 3 0x3000 suspend syz-executor *68635 216588 27656 0 7 0x4081000 syz-executor 69792 366642 52210 0 3 0x82 wait syz-executor 49774 443193 0 0 3 0x14200 acct acct 79069 518140 1 0 2 0x100083 getty 57803 144663 52210 0 2 0xc82 syz-executor 7242 445235 52210 0 2 0xc82 syz-executor 2276 441316 52210 0 2 0xc82 syz-executor 15511 347896 52210 0 2 0xc82 syz-executor 27656 387038 52210 0 3 0x82 wait syz-executor 40676 359061 52210 0 2 0xc82 syz-executor 76732 523264 52210 0 2 0xc82 syz-executor 52210 303416 51844 0 3 0x82 kqread syz-executor 51844 240556 86372 0 3 0x10008a sigsusp ksh 86372 521140 81982 0 3 0x98 kqread sshd-session 81982 412856 71202 0 3 0x92 kqread sshd-session 71202 184775 1 0 3 0x88 kqread sshd 4953 405335 21089 74 3 0x1100092 bpf pflogd 21089 394411 1 0 3 0x80 sbwait pflogd 9575 307536 86601 73 3 0x1100090 kqread syslogd 86601 159811 1 0 3 0x100082 sbwait syslogd 9030 169192 1 0 3 0x100080 kqread resolvd 37890 387133 54388 77 3 0x100092 kqread dhcpleased 93984 67062 54388 77 3 0x100092 kqread dhcpleased 54388 372329 1 0 3 0x80 kqread dhcpleased 55802 309763 0 0 2 0x40014200 smr 74479 316738 0 0 2 0x14200 zerothread 22149 511999 0 0 3 0x14200 aiodoned aiodoned 42699 140972 0 0 3 0x14200 syncer update 40350 167289 0 0 3 0x14200 cleaner cleaner 23049 450905 0 0 3 0x14200 reaper reaper 69394 361912 0 0 3 0x14200 pgdaemon pagedaemon 51259 146206 0 0 3 0x14200 bored viomb 75967 55303 0 0 3 0x40014200 acpi0 acpi0 51280 157567 0 0 3 0x40014200 idle1 30794 43235 0 0 3 0x14200 bored softnet1 96533 146189 0 0 2 0x14200 softnet0 71604 96600 0 0 2 0x14200 systqmp 76363 115786 0 0 3 0x14200 bored systq 93786 92121 0 0 3 0x14200 netlock softclockmp 25631 316000 0 0 3 0x40014200 tmoslp softclock 96068 208831 0 0 3 0x40014200 idle0 1 327205 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 28658 (syz-executor) thread 0xffff80003bbf8d30 (50572) exclusive rwlock dtlk r = 0 (0xffffffff83868938) #0 witness_lock+1521 #1 rw_do_enter_write+1049 #2 dt_ioctl_record_stop+46 #3 dtclose+265 #4 spec_close+1126 #5 VOP_CLOSE+306 #6 vn_closefile+299 #7 fdrop+289 #8 closef+402 #9 syscall+3028 #10 Xsyscall+296 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839bac88) #0 witness_lock+1521 #1 vn_closefile+65 #2 fdrop+289 #3 closef+402 #4 syscall+3028 #5 Xsyscall+296 Process 73132 (syz-executor) thread 0xffff80003bbfa558 (121701) exclusive rrwlock inode r = 0 (0xfffffd806e8658c0) #0 witness_lock+1521 #1 rw_do_enter_write+1049 #2 rrw_enter+198 #3 VOP_LOCK+189 #4 vn_lock+164 #5 vn_write+399 #6 dofilewritev+578 #7 sys_write+162 #8 syscall+3028 #9 Xsyscall+296 Process 2884 (syz-executor) thread 0xffff80003bbfa7f0 (417829) exclusive rrwlock inode r = 0 (0xfffffd806e700478) #0 witness_lock+1521 #1 rw_do_enter_write+1049 #2 rrw_enter+198 #3 VOP_LOCK+189 #4 vn_lock+164 #5 vn_write+399 #6 dofilewritev+578 #7 sys_write+162 #8 syscall+3028 #9 Xsyscall+296 Process 61348 (syz-executor) thread 0xffff80003bbfb4e8 (313769) exclusive rrwlock inode r = 0 (0xfffffd806ea42810) #0 witness_lock+1521 #1 rw_do_enter_write+1049 #2 rrw_enter+198 #3 VOP_LOCK+189 #4 vn_lock+164 #5 vn_write+399 #6 dofilewritev+578 #7 sys_write+162 #8 syscall+3028 #9 Xsyscall+296 Process 68635 (syz-executor) thread 0xffff8000fffef4d8 (216588) exclusive rwlock vmmaplk r = 0 (0xfffffd807b74f4f8) #0 witness_lock+1521 #1 rw_do_enter_read+1000 #2 uvmfault_lookup+290 #3 uvm_fault_check+79 #4 uvm_fault+262 #5 kpageflttrap+756 #6 kerntrap+412 #7 alltraps_kern_meltdown+123 #8 _copyin+91 #9 ffs_write+1897 #10 VOP_WRITE+257 #11 vn_write+467 #12 dofilewritev+578 #13 sys_write+162 #14 syscall+3028 #15 Xsyscall+296 exclusive rrwlock inode r = 0 (0xfffffd805eadbdb8) #0 witness_lock+1521 #1 rw_do_enter_write+1049 #2 rrw_enter+198 #3 VOP_LOCK+189 #4 vn_lock+164 #5 vn_write+399 #6 dofilewritev+578 #7 sys_write+162 #8 syscall+3028 #9 Xsyscall+296 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11246 12802K 13526K 166960K 17776 0 pcb 43 16K 32K 166960K 1264 0 rtable 237 18K 18K 166960K 1349 0 pf 38 18K 81K 166960K 451 0 ifaddr 38 7K 9K 166960K 337 0 ifgroup 56 2K 3K 166960K 598 0 sysctl 4 1K 9K 166960K 38 0 counters 76 37K 38K 166960K 850 0 ioctlops 0 0K 4K 166960K 2839 0 iov 0 0K 26K 166960K 348 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1576 99K 100K 166960K 5664 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 10K 166960K 70 0 VM map 2 1K 1K 166960K 2 0 sem 23 137K 137K 166960K 184 0 dirhash 12 2K 3K 166960K 99 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 244K 166960K 4724 0 sigio 0 0K 0K 166960K 100 0 proc 75 131K 164K 166960K 1557 0 subproc 72 4K 4K 166960K 216 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 804 0 in_multi 73 5K 7K 166960K 500 0 ether_multi 1 0K 0K 166960K 65 0 mrt 1 0K 0K 166960K 46 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 1637 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 8 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 291 162K 180K 166960K 44307 0 UVM aobj 24 20K 22K 166960K 31 0 pinsyscall 43 86K 103K 166960K 6291 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 422 0 NDP 16 0K 2K 166960K 244 0 temp 88 8680K 8936K 166960K 240169 0 kqueue 14 22K 34K 166960K 888 0 SYN cache 2 8K 16K 166960K 3 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 120 596 0 593 5 2 3 3 0 8 2 rtentry 176 400 0 321 6 0 6 6 0 8 0 unpcb 144 2925 0 2907 18 17 1 6 0 8 0 syncache 336 14 0 14 5 5 0 1 0 8 0 tcpqe 32 5 0 5 3 3 0 1 0 8 0 tcpcb 736 1648 0 1644 35 28 7 7 0 8 6 arp 136 59 0 45 1 0 1 1 0 8 0 inpcb 328 5582 0 5548 49 42 7 13 0 8 4 nd6 152 83 0 64 2 0 2 2 0 8 0 pkpcb 40 45 0 45 8 7 1 1 0 8 1 kcovpl 48 24 0 16 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 321 0 318 4 3 1 1 0 8 0 pppxif 1504 34 0 34 9 8 1 1 0 8 1 pffrag 232 73 0 69 1 0 1 1 0 482 0 pffrnode 88 21 0 17 1 0 1 1 0 8 0 pffrent 40 138 0 134 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 5 0 5 4 4 0 1 0 8 0 rttmr 136 6 0 6 5 5 0 1 0 8 0 art_heap8 4096 6 0 0 6 0 6 6 0 8 0 art_heap4 256 1843 0 1521 41 18 23 31 0 8 1 art_table 40 1849 0 1521 6 1 5 6 0 8 0 art_node 32 397 0 328 1 0 1 1 0 8 0 semupl 112 5 0 5 3 2 1 1 0 8 1 semapl 112 179 0 158 1 0 1 1 0 8 0 shmpl 112 13 0 1 1 0 1 1 0 8 0 dirhash 1024 76 0 59 3 0 3 3 0 8 0 dino2pl 256 10463 0 8916 97 0 97 97 0 8 0 ffsino 296 10463 0 8916 121 1 120 120 0 8 0 nchpl 144 16891 0 15135 66 0 66 66 0 8 0 rtmask 32 56 0 55 8 7 1 1 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 64549 0 64549 8 7 1 2 0 8 1 percpumem 16 440 0 387 1 0 1 1 0 8 0 vcpupl 3968 10 0 1 2 0 2 2 0 8 0 vmpool 848 15 0 6 2 1 1 2 0 8 0 kstatmem 264 394 0 362 7 4 3 3 0 8 0 acpiwqpl 32 3 0 3 1 0 1 1 1 8 1 scsiplug 72 28 0 28 8 7 1 1 0 8 1 scxspl 216 102704 0 102704 16 15 1 8 1 8 1 plimitpl 152 1921 0 1900 1 0 1 1 0 8 0 sigapl 424 5031 0 4982 9 2 7 8 0 8 0 knotepl 120 786 0 0 24 0 24 24 0 8 0 kqueuepl 224 1762 0 1752 19 18 1 5 0 8 0 pipepl 344 640 0 612 6 3 3 6 0 8 0 fdescpl 528 4965 0 4933 3 0 3 3 0 8 0 filepl 160 36284 0 35999 51 35 16 21 0 8 1 lockfpl 104 1756 0 1740 3 2 1 2 0 8 0 lockfspl 48 595 0 582 1 0 1 1 0 8 0 sessionpl 144 51 0 42 1 0 1 1 0 8 0 pgrppl 48 225 0 208 1 0 1 1 0 8 0 ucredpl 104 6140 0 6126 1 0 1 1 0 8 0 zombiepl 144 6031 0 6028 1 0 1 1 0 8 0 processpl 1232 5031 0 4982 8 3 5 6 0 8 0 procpl 664 12618 0 12555 8 1 7 8 0 8 0 sosppl 176 34 0 34 10 9 1 1 0 8 1 sockpl 752 9592 0 9537 74 62 12 18 0 8 6 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 13 0 0 2 0 2 2 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 119 0 0 15 1 14 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 106 0 0 11 0 11 11 0 8 0 mtagpl 96 150 0 0 4 0 4 4 0 8 0 mbufpl 256 809 0 0 48 0 48 48 0 8 0 bufpl 280 40667 0 34530 439 0 439 439 0 8 0 anonpl 32 15663 0 0 126 0 126 126 0 246 0 amapchunkpl 152 178432 0 177620 98 62 36 45 0 158 4 amappl16 200 15720 0 15271 125 100 25 32 0 8 0 amappl15 192 15 0 15 2 2 0 1 0 8 0 amappl14 184 7 0 7 1 1 0 1 0 8 0 amappl13 176 615 0 613 1 0 1 1 0 8 0 amappl12 168 5470 0 5427 3 0 3 3 0 8 0 amappl11 160 5 0 4 1 0 1 1 0 8 0 amappl10 152 50 0 36 1 0 1 1 0 8 0 amappl9 144 264 0 263 1 0 1 1 0 8 0 amappl8 136 31 0 28 1 0 1 1 0 8 0 amappl7 128 142 0 141 1 0 1 1 0 8 0 amappl6 120 490 0 473 1 0 1 1 0 8 0 amappl5 112 85 0 74 1 0 1 1 0 8 0 amappl4 104 563 0 533 1 0 1 1 0 8 0 amappl3 96 27526 0 27409 4 1 3 3 0 8 0 amappl2 88 5115 0 5035 2 0 2 2 0 8 0 amappl1 80 31776 0 31176 16 2 14 15 0 8 0 amappl 88 42459 0 42247 5 0 5 5 0 92 0 uvmvnodes 80 227 0 0 5 0 5 5 0 8 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma32768 32768 2 0 2 2 2 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 4 0 3 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 10 0 10 4 4 0 1 0 8 0 dma128 128 257 0 257 4 4 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 73 0 73 3 3 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 30 0 7 1 0 1 1 0 8 0 uaddrrnd 24 4965 0 4933 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4965 0 4933 1 0 1 1 0 8 0 vmmpekpl 168 35275 0 35201 5 1 4 4 0 8 0 vmmpepl 168 316417 0 313959 157 50 107 113 0 357 0 vmsppl 488 4964 0 4933 6 1 5 5 0 8 0 rwobjpl 80 79422 0 77741 46 11 35 36 0 8 0 pdppl 4096 9967 0 9887 146 64 82 85 0 8 2 pvpl 32 24001 0 0 193 1 192 192 0 265 0 pmappl 256 4979 0 4939 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 433 0 133 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+39: addq $8,%rsp x86_ipi_db(ffffffff83883ff0) at x86_ipi_db+39 x86_ipi_handler() at x86_ipi_handler+217 Xresume_lapic_ipi() at Xresume_lapic_ipi+39 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+44 __mp_lock(ffffffff839baa80) at __mp_lock+419 softintr_dispatch(0) at softintr_dispatch+293 dosoftint(0) at dosoftint+84 Xsoftclock() at Xsoftclock+39 __mp_lock(ffffffff839baa80) at __mp_lock+402 __mp_acquire_count(ffffffff839baa80,1) at __mp_acquire_count+88 sleep_finish(ffffffffffffffff,1) at sleep_finish+728 biowait(fffffd806877d360) at biowait+198 bwrite(fffffd806877d360) at bwrite+743 ffs2_balloc(fffffd806e7003d8,2c4000,4000,fffffd80097fd2d8,2,ffff80003c40f0f8) at ffs2_balloc+6324 end trace frame: 0xffff80003c40f170, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83883ff0) at x86_ipi_db+39 x86_ipi_handler() at x86_ipi_handler+217 Xresume_lapic_ipi() at Xresume_lapic_ipi+39 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+44 __mp_lock(ffffffff839baa80) at __mp_lock+419 softintr_dispatch(0) at softintr_dispatch+293 dosoftint(0) at dosoftint+84 Xsoftclock() at Xsoftclock+39 __mp_lock(ffffffff839baa80) at __mp_lock+402 __mp_acquire_count(ffffffff839baa80,1) at __mp_acquire_count+88 sleep_finish(ffffffffffffffff,1) at sleep_finish+728 biowait(fffffd806877d360) at biowait+198 bwrite(fffffd806877d360) at bwrite+743 ffs2_balloc(fffffd806e7003d8,2c4000,4000,fffffd80097fd2d8,2,ffff80003c40f0f8) at ffs2_balloc+6324 ffs_write(ffff80003c40f180) at ffs_write+1273 VOP_WRITE(fffffd806bb7cbf0,ffff80003c40f338,7,fffffd80097fd2d8) at VOP_WRITE+257 vn_write(fffffd806c54bc18,ffff80003c40f338,0) at vn_write+467 dofilewritev(ffff80003bbfa7f0,7,ffff80003c40f338,0,ffff80003c40f3f0) at dofilewritev+578 sys_write(ffff80003bbfa7f0,ffff80003c40f4a0,ffff80003c40f3f0) at sys_write+162 syscall(ffff80003c40f4a0) at syscall+3028 Xsyscall() at Xsyscall+296 end of kernel end trace frame: 0xadf47cbbb70, count: -21 ddb{0}> machine ddbcpu 1 Stopped at alltraps_kern_meltdown+184: movl %ebx,%gs:1672 alltraps_kern_meltdown() at alltraps_kern_meltdown+184 _copyin() at _copyin+91 ffs_write(ffff80003703c1a0) at ffs_write+1897 VOP_WRITE(fffffd805c76b550,ffff80003703c358,7,fffffd80097fd2d8) at VOP_WRITE+257 vn_write(fffffd8069a36ce0,ffff80003703c358,0) at vn_write+467 dofilewritev(ffff8000fffef4d8,4,ffff80003703c358,0,ffff80003703c410) at dofilewritev+578 sys_write(ffff8000fffef4d8,ffff80003703c4c0,ffff80003703c410) at sys_write+162 syscall(ffff80003703c4c0) at syscall+3028 Xsyscall() at Xsyscall+296 end of kernel end trace frame: 0xfa994f9fd70, count: 6 ddb{1}> trace alltraps_kern_meltdown() at alltraps_kern_meltdown+184 _copyin() at _copyin+91 ffs_write(ffff80003703c1a0) at ffs_write+1897 VOP_WRITE(fffffd805c76b550,ffff80003703c358,7,fffffd80097fd2d8) at VOP_WRITE+257 vn_write(fffffd8069a36ce0,ffff80003703c358,0) at vn_write+467 dofilewritev(ffff8000fffef4d8,4,ffff80003703c358,0,ffff80003703c410) at dofilewritev+578 sys_write(ffff8000fffef4d8,ffff80003703c4c0,ffff80003703c410) at sys_write+162 syscall(ffff80003703c4c0) at syscall+3028 Xsyscall() at Xsyscall+296 end of kernel end trace frame: 0xfa994f9fd70, count: -9