panic:W AmuRNtIeNxG 0:x SffPLf ffNdOT80 L5OffWER13EDb cO8N nSoYStC hAeldLL i n75 mt x5_3l6e8a7v0e9 12S EXItTo p0 pa ed at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 121173 29417 32767 0x10 0x4000000 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83078e14) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_leave(fffffd805ff13bc8) at mtx_leave+0x17c sys/kern/kern_lock.c:335 msleep(fffffd805ff13ae0,fffffd805ff13bc8,4,ffffffff832a21d0,0) at msleep+0x125 sys/kern/kern_synch.c:249 vm_map_lock_ln(fffffd805ff13ab0,ffffffff830d8373,6f3) at vm_map_lock_ln+0xd4 sys/uvm/uvm_map.c:5250 uvmfault_lookup(ffff80002a0d3f20,1) at uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1779 uvm_fault_check(ffff80002a0d3f20,ffff80002a0d3f58,ffff80002a0d3f80) at uvm_fault_check+0x83e uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] uvm_fault_check(ffff80002a0d3f20,ffff80002a0d3f58,ffff80002a0d3f80) at uvm_fault_check+0x83e sys/uvm/uvm_fault.c:710 uvm_fault(fffffd805ff13ab0,200c0000,0,1) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a0d40c0,200c0000) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a0d40c0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b _copyin() at _copyin+0x57 syscall(ffff80002a0d4510) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0d4510) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x41cfd1367b0, count: 1 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: mutex 0xfffffd805ff13bc8 not held in mtx_leave ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83078e14) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_leave(fffffd805ff13bc8) at mtx_leave+0x17c sys/kern/kern_lock.c:335 msleep(fffffd805ff13ae0,fffffd805ff13bc8,4,ffffffff832a21d0,0) at msleep+0x125 sys/kern/kern_synch.c:249 vm_map_lock_ln(fffffd805ff13ab0,ffffffff830d8373,6f3) at vm_map_lock_ln+0xd4 sys/uvm/uvm_map.c:5250 uvmfault_lookup(ffff80002a0d3f20,1) at uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1779 uvm_fault_check(ffff80002a0d3f20,ffff80002a0d3f58,ffff80002a0d3f80) at uvm_fault_check+0x83e uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] uvm_fault_check(ffff80002a0d3f20,ffff80002a0d3f58,ffff80002a0d3f80) at uvm_fault_check+0x83e sys/uvm/uvm_fault.c:710 uvm_fault(fffffd805ff13ab0,200c0000,0,1) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a0d40c0,200c0000) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a0d40c0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b _copyin() at _copyin+0x57 syscall(ffff80002a0d4510) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0d4510) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x41cfd1367b0, count: -14 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a0d3b40 rbx 0xffffffff834aedbf cpu_info_full_primary+0x2dbf rdx 0xffff8000013c03c0 rcx 0xffff80002a0abc10 rax 0xffffffff834adff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x91d322ebdebaa16d r11 0x88b1652795f98b00 r12 0xffffffff834aebc0 cpu_info_full_primary+0x2bc0 r13 0 r14 0 r15 0x1 rip 0xffffffff816a99e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a0d3b30 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=77494 pid=29417 tcnt=3 stat=sleep flags process=10 proc=4000020 runpri=32, usrpri=60, slppri=4, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a0aaf68,0xffff80002a0aa7e0 process=0xffff80002b1dcd98 user=0xffff80002a0cf000, vmspace=0xfffffd805ff13ab0 estcpu=10, cpticks=8, pctcpu=0.0, user=0, sys=8, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 37270 196000 11292 0 2 0x40 syz-executor 49178 127039 32839 0 2 0x100002 sh 36179 76465 35660 0 2 0x40 syz-executor 29417 216909 34833 32767 2 0x10 syz-executor *29417 77494 34833 32767 3 0x4000030 syz-executor 29417 121173 34833 32767 7 0x4000010 syz-executor 32649 396035 74030 32767 3 0x90 nanoslp syz-executor 32649 197708 74030 32767 3 0x4000090 kqsel syz-executor 32649 487667 74030 32767 3 0x4000090 fsleep syz-executor 17322 277505 46770 32767 2 0x10 syz-executor 17322 405117 46770 32767 3 0x4000090 fsleep syz-executor 35660 232615 47903 0 3 0x80 ppwait syz-executor 11292 331401 39214 0 3 0x80 ppwait syz-executor 32839 505771 24512 0 3 0x80 wait syz-executor 70587 274951 77388 0 2 0 syz-executor 66429 75792 94530 32767 2 0x490 syz-executor 34833 111951 12719 32767 2 0x490 syz-executor 46770 347592 9421 32767 2 0x10 syz-executor 74030 64423 46890 32767 2 0x490 syz-executor 77388 419500 3413 0 3 0x82 wait syz-executor 94530 9361 3413 0 3 0x82 wait syz-executor 39214 400504 3413 0 3 0x82 wait syz-executor 47903 57347 3413 0 3 0x82 wait syz-executor 12719 342065 3413 0 3 0x82 wait syz-executor 9421 155239 3413 0 3 0x82 wait syz-executor 24512 323615 3413 0 3 0x82 wait syz-executor 46890 72815 3413 0 3 0x82 wait syz-executor 36806 481016 0 0 3 0x14200 bored sosplice 3413 407451 54296 0 3 0x82 kqread syz-executor 54296 517689 71631 0 3 0x10008a sigsusp ksh 71631 158092 56893 0 3 0x98 kqread sshd-session 56893 236588 3791 0 3 0x92 kqread sshd-session 58229 119191 1 0 3 0x100083 ttyin getty 3791 135730 1 0 3 0x88 kqread sshd 7037 237166 3388 73 2 0x1100010 syslogd 3388 213302 1 0 3 0x100082 sbwait syslogd 17464 509877 1 0 3 0x100080 kqread resolvd 85038 75846 126 77 3 0x100092 kqread dhcpleased 15147 402377 126 77 3 0x100092 kqread dhcpleased 126 453245 1 0 3 0x80 kqread dhcpleased 96032 213770 0 0 3 0x14200 bored smr 50072 248218 0 0 2 0x14200 zerothread 60263 396194 0 0 3 0x14200 aiodoned aiodoned 900 425847 0 0 3 0x14200 syncer update 48074 32564 0 0 3 0x14200 cleaner cleaner 61708 342188 0 0 2 0x14200 reaper 22097 315862 0 0 3 0x14200 pgdaemon pagedaemon 41197 374457 0 0 3 0x14200 bored viomb 45683 280786 0 0 3 0x40014200 acpi0 acpi0 71738 475460 0 0 3 0x40014200 idle1 8970 333889 0 0 3 0x14200 bored softnet3 72117 449911 0 0 3 0x14200 bored softnet2 37209 489157 0 0 3 0x14200 bored softnet1 98086 193886 0 0 3 0x14200 bored softnet0 78423 520511 0 0 3 0x14200 bored systqmp 32835 470361 0 0 3 0x14200 bored systq 22461 212449 0 0 3 0x14200 tmoslp softclockmp 97529 101954 0 0 3 0x40014200 tmoslp softclock 51918 383663 0 0 3 0x40014200 idle0 1 82679 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &map->flags_lock r = 0 (0xfffffd805ff13c08) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 vm_map_lock_ln+0x6b sys/uvm/uvm_map.c:5244 #4 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1779 #5 uvm_fault_check+0x83e uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] #5 uvm_fault_check+0x83e sys/uvm/uvm_fault.c:710 #6 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #7 kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 #8 kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 #9 alltraps_kern_meltdown+0x7b #10 _copyin+0x57 #11 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #11 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806b5ed5e8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_page_remove+0xcd rcr3 machine/cpufunc.h:139 [inline] #3 pmap_page_remove+0xcd pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_page_remove+0xcd sys/arch/amd64/amd64/pmap.c:1974 #4 uvm_map_clean+0x630 sys/uvm/uvm_map.c:4534 #5 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #5 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83512f78) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 uvm_map_clean+0x602 sys/uvm/uvm_map.c:4528 #4 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 Process 29417 (syz-executor) thread 0xffff80002a0aa548 (121173) exclusive rwlock amaplk r = 0 (0xfffffd805f7d8b08) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 uvm_map_clean+0x411 sys/uvm/uvm_map.c:4498 #2 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #2 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #3 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff835a2200) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #1 syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 #2 Xsyscall+0x128 Process 7037 (syslogd) thread 0xffff8000ffffd6d8 (237166) exclusive rrwlock inode r = 0 (0xfffffd806e6a65f0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #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:2926 #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 10213 11051K 11059K 166960K 11329 0 pcb 17 14K 16K 166960K 19 0 rtable 202 5K 7K 166960K 681 0 pf 31 16K 16K 166960K 56 0 ifaddr 38 6K 7K 166960K 90 0 ifgroup 50 2K 2K 166960K 99 0 sysctl 2 0K 0K 166960K 2 0 counters 64 36K 36K 166960K 88 0 ioctlops 0 0K 2K 166960K 42 0 iov 0 0K 12K 166960K 89 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1463 92K 92K 166960K 1640 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 80 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 24 89K 157K 166960K 698 0 sigio 0 0K 0K 166960K 38 0 proc 58 79K 176K 166960K 821 0 subproc 104 6K 12K 166960K 260 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 363 0 in_multi 79 5K 7K 166960K 235 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 616 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 230 73K 130K 166960K 7268 0 UVM aobj 21 2K 2K 166960K 23 0 pinsyscall 45 90K 126K 166960K 1987 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 31 0 NDP 23 1K 2K 166960K 59 0 temp 48 6813K 6939K 166960K 6884 0 kqueue 13 20K 34K 166960K 87 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 98 0 95 1 0 1 1 0 8 0 rtentry 112 233 0 139 4 0 4 4 0 8 1 unpcb 144 297 0 282 2 1 1 2 0 8 0 syncache 336 7 0 7 1 1 0 1 0 8 0 tcpcb 808 453 0 449 14 10 4 14 0 8 3 arp 120 43 0 26 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 336 1047 0 1037 12 8 4 12 0 8 3 nd6 136 57 0 40 1 0 1 1 0 8 0 kcovpl 48 20 0 12 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 933 0 559 30 3 27 30 0 8 3 art_table 32 934 0 559 4 0 4 4 0 8 0 art_node 16 232 0 146 1 0 1 1 0 8 0 sysvmsgpl 40 28 0 6 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 76 0 66 1 0 1 1 0 8 0 shmpl 112 20 0 2 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2190 0 658 96 0 96 96 0 8 0 ffsino 272 2190 0 658 103 0 103 103 0 8 0 nchpl 144 2907 0 1213 63 0 63 63 0 8 0 uvmvnodes 80 2459 0 0 51 0 51 51 0 8 0 vnodes 216 2459 0 0 137 0 137 137 0 8 0 namei 1024 10947 0 10947 2 0 2 2 0 8 2 percpumem 16 58 0 12 1 0 1 1 0 8 0 kstatmem 264 46 0 24 2 0 2 2 0 8 0 scxspl 216 10807 0 10807 9 7 2 8 1 8 2 plimitpl 152 209 0 185 2 0 2 2 0 8 0 sigapl 424 949 0 893 9 0 9 9 0 8 1 futexpl 64 5411 0 5409 2 1 1 1 0 8 0 knotepl 120 547 0 0 17 0 17 17 0 8 0 kqueuepl 216 144 0 132 2 1 1 2 0 8 0 pipepl 320 204 0 177 5 0 5 5 0 8 0 fdescpl 496 930 0 894 8 1 7 7 0 8 0 filepl 152 5200 0 4960 17 3 14 16 0 8 1 lockfpl 104 125 0 123 1 0 1 1 0 8 0 lockfspl 48 50 0 48 1 0 1 1 0 8 0 sessionpl 144 37 0 21 1 0 1 1 0 8 0 pgrppl 48 149 0 124 1 0 1 1 0 8 0 ucredpl 104 1008 0 993 1 0 1 1 0 8 0 zombiepl 144 894 0 893 1 0 1 1 0 8 0 processpl 1160 949 0 893 6 0 6 6 0 8 0 procpl 648 1639 0 1577 8 1 7 7 0 8 0 sosppl 168 6 0 6 1 1 0 1 0 8 0 sockpl 664 1450 0 1422 14 8 6 14 0 8 3 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 124 0 0 16 0 16 16 0 8 0 mcl2k 2048 36 0 0 5 0 5 5 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 316 0 0 20 0 20 20 0 8 0 bufpl 280 5540 0 95 389 0 389 389 0 8 0 anonpl 24 198841 0 195566 50 3 47 48 0 185 23 amapchunkpl 152 23334 0 22842 33 0 33 33 0 158 13 amappl16 200 4898 0 4882 17 12 5 14 0 8 4 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 132 0 122 1 0 1 1 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 1704 0 1671 3 0 3 3 0 8 1 amappl11 160 51 0 41 1 0 1 1 0 8 0 amappl10 152 12 0 12 1 1 0 1 0 8 0 amappl9 144 159 0 159 1 1 0 1 0 8 0 amappl8 136 24 0 23 1 0 1 1 0 8 0 amappl7 128 133 0 123 1 0 1 1 0 8 0 amappl6 120 268 0 266 1 0 1 1 0 8 0 amappl5 112 205 0 196 1 0 1 1 0 8 0 amappl4 104 321 0 306 1 0 1 1 0 8 0 amappl3 96 4668 0 4554 4 0 4 4 0 8 1 amappl2 88 824 0 763 2 0 2 2 0 8 0 amappl1 80 10423 0 9898 15 1 14 14 0 8 1 amappl 88 6822 0 6646 6 0 6 6 0 92 1 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 22 0 2 1 0 1 1 0 8 0 uaddrrnd 24 930 0 893 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 930 0 893 1 0 1 1 0 8 0 vmmpekpl 168 8514 0 8456 4 0 4 4 0 8 0 vmmpepl 168 65229 0 63313 100 5 95 100 0 357 6 vmsppl 448 929 0 893 7 1 6 6 0 8 0 rwobjpl 56 24682 0 21377 50 0 50 50 0 8 0 pdppl 4096 1867 0 1786 145 44 101 113 0 8 20 pvpl 32 27529 0 0 223 0 223 223 0 265 0 pmappl 248 929 0 893 5 1 4 4 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 461 0 69 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff83078e14) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_leave(fffffd805ff13bc8) at mtx_leave+0x17c sys/kern/kern_lock.c:335 msleep(fffffd805ff13ae0,fffffd805ff13bc8,4,ffffffff832a21d0,0) at msleep+0x125 sys/kern/kern_synch.c:249 vm_map_lock_ln(fffffd805ff13ab0,ffffffff830d8373,6f3) at vm_map_lock_ln+0xd4 sys/uvm/uvm_map.c:5250 uvmfault_lookup(ffff80002a0d3f20,1) at uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1779 uvm_fault_check(ffff80002a0d3f20,ffff80002a0d3f58,ffff80002a0d3f80) at uvm_fault_check+0x83e uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] uvm_fault_check(ffff80002a0d3f20,ffff80002a0d3f58,ffff80002a0d3f80) at uvm_fault_check+0x83e sys/uvm/uvm_fault.c:710 uvm_fault(fffffd805ff13ab0,200c0000,0,1) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a0d40c0,200c0000) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a0d40c0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b _copyin() at _copyin+0x57 syscall(ffff80002a0d4510) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0d4510) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x41cfd1367b0, count: -14 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 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68 savectx() at savectx+0xae end of kernel end trace frame: 0x41d4e2d0140, count: 10 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 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68 savectx() at savectx+0xae end of kernel end trace frame: 0x41d4e2d0140, count: -5