panic: mutWAex 0xRNIfNfG:f fSfd80P5L NO36bT9 30L0OWE RnEot Dh eOlNd i nS YmStx_lCeAaLvLe 75 5S3t6o8pp7e09d 1a2t EXIT 0 a db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 223727 49368 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(fffffd80536b9300) at mtx_leave+0x17c sys/kern/kern_lock.c:335 msleep(fffffd80536b9218,fffffd80536b9300,4,ffffffff832a21d0,0) at msleep+0x125 sys/kern/kern_synch.c:249 vm_map_lock_ln(fffffd80536b91e8,ffffffff830d8373,6f3) at vm_map_lock_ln+0xd4 sys/uvm/uvm_map.c:5250 uvmfault_lookup(ffff80002a77a4d0,1) at uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1779 uvm_fault_check(ffff80002a77a4d0,ffff80002a77a508,ffff80002a77a530) at uvm_fault_check+0x83e uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] uvm_fault_check(ffff80002a77a4d0,ffff80002a77a508,ffff80002a77a530) at uvm_fault_check+0x83e sys/uvm/uvm_fault.c:710 uvm_fault(fffffd80536b91e8,200b0000,0,1) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a77a670,200b0000) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a77a670) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b _copyin() at _copyin+0x57 syscall(ffff80002a77aac0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a77aac0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5ecd7324020, 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 0xfffffd80536b9300 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(fffffd80536b9300) at mtx_leave+0x17c sys/kern/kern_lock.c:335 msleep(fffffd80536b9218,fffffd80536b9300,4,ffffffff832a21d0,0) at msleep+0x125 sys/kern/kern_synch.c:249 vm_map_lock_ln(fffffd80536b91e8,ffffffff830d8373,6f3) at vm_map_lock_ln+0xd4 sys/uvm/uvm_map.c:5250 uvmfault_lookup(ffff80002a77a4d0,1) at uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1779 uvm_fault_check(ffff80002a77a4d0,ffff80002a77a508,ffff80002a77a530) at uvm_fault_check+0x83e uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] uvm_fault_check(ffff80002a77a4d0,ffff80002a77a508,ffff80002a77a530) at uvm_fault_check+0x83e sys/uvm/uvm_fault.c:710 uvm_fault(fffffd80536b91e8,200b0000,0,1) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a77a670,200b0000) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a77a670) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b _copyin() at _copyin+0x57 syscall(ffff80002a77aac0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a77aac0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5ecd7324020, count: -14 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a77a0f0 rbx 0xffffffff834aedbf cpu_info_full_primary+0x2dbf rdx 0xffff8000012ece80 rcx 0xffff8000ffff7458 rax 0xffffffff834adff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x73c8379bb70d9245 r11 0x34fccc2fee6f7c49 r12 0xffffffff834aebc0 cpu_info_full_primary+0x2bc0 r13 0 r14 0 r15 0x1 rip 0xffffffff816a99e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a77a0e0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=203298 pid=49368 tcnt=3 stat=sleep flags process=10 proc=4000020 runpri=32, usrpri=85, slppri=4, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff5970,0xffff8000371d6548 process=0xffff80003f450d98 user=0xffff80002a775000, vmspace=0xfffffd80536b91e8 estcpu=35, cpticks=9, pctcpu=0.0, user=0, sys=9, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 73755 393162 3962 32767 2 0x10 syz-executor 36813 175192 73546 32767 2 0x10 syz-executor 87297 79173 529 32767 2 0x10 syz-executor 87297 288768 529 32767 3 0x4000090 fsleep syz-executor 49368 80961 29116 32767 2 0x10 syz-executor *49368 203298 29116 32767 3 0x4000030 syz-executor 49368 223727 29116 32767 7 0x4000010 syz-executor 53315 181537 31579 32767 3 0x90 nanoslp syz-executor 53315 214086 31579 32767 3 0x4000090 netacc syz-executor 53315 446907 31579 32767 3 0x4000090 fsleep syz-executor 53315 442737 31579 32767 3 0x4000090 fsleep syz-executor 83344 521755 83280 32767 3 0x90 nanoslp syz-executor 83344 145588 83280 32767 3 0x4000090 kqread syz-executor 83344 40149 83280 32767 3 0x4000090 fsleep syz-executor 14164 198012 12651 32767 3 0x90 nanoslp syz-executor 14164 487888 12651 32767 3 0x4000090 piperd syz-executor 14164 394406 12651 32767 3 0x4000090 fsleep syz-executor 72446 450510 25912 0 3 0x100082 sbwait arp 25912 222446 97851 0 3 0x10008a sigsusp sh 29116 64079 62461 32767 3 0x90 nanoslp syz-executor 529 479799 18009 32767 3 0x90 nanoslp syz-executor 62461 396015 51789 0 3 0x82 wait syz-executor 18009 278503 51789 0 3 0x82 wait syz-executor 73546 66443 71616 32767 2 0x490 syz-executor 31579 116203 94891 32767 3 0x90 nanoslp syz-executor 12651 377469 22381 32767 3 0x90 nanoslp syz-executor 3962 343651 92581 32767 3 0x90 nanoslp syz-executor 22381 348084 51789 0 3 0x82 wait syz-executor 92581 458465 51789 0 3 0x82 wait syz-executor 94891 310219 51789 0 3 0x82 wait syz-executor 71616 254865 51789 0 3 0x82 wait syz-executor 97851 432077 51104 0 3 0x80 wait syz-executor 83280 41585 48970 32767 3 0x90 nanoslp syz-executor 51104 261775 51789 0 3 0x82 wait syz-executor 48970 237271 51789 0 3 0x82 wait syz-executor 77071 354540 0 0 3 0x14200 bored sosplice 51789 37018 74588 0 3 0x82 kqread syz-executor 74588 178480 18458 0 3 0x10008a sigsusp ksh 18458 431490 64171 0 3 0x98 kqread sshd-session 64171 140956 92044 0 3 0x92 kqread sshd-session 53589 420295 1 0 3 0x100083 ttyin getty 92044 328746 1 0 3 0x88 kqread sshd 12265 5764 33139 73 3 0x1100010 ffs_fsync syslogd 33139 237034 1 0 3 0x100082 sbwait syslogd 55561 103260 1 0 3 0x100080 kqread resolvd 12946 31520 47859 77 3 0x100092 kqread dhcpleased 22311 269498 47859 77 3 0x100092 kqread dhcpleased 47859 314013 1 0 3 0x80 kqread dhcpleased 42679 425613 0 0 3 0x14200 bored smr 46069 108987 0 0 3 0x14200 pgzero zerothread 45813 466305 0 0 3 0x14200 aiodoned aiodoned 87552 324826 0 0 3 0x14200 syncer update 95531 439211 0 0 3 0x14200 cleaner cleaner 62094 344513 0 0 3 0x14200 reaper reaper 88511 39389 0 0 3 0x14200 pgdaemon pagedaemon 92368 286242 0 0 3 0x14200 bored viomb 9241 301032 0 0 3 0x40014200 acpi0 acpi0 39052 341877 0 0 3 0x40014200 idle1 25992 8052 0 0 3 0x14200 bored softnet3 96085 53389 0 0 3 0x14200 bored softnet2 1921 223594 0 0 3 0x14200 bored softnet1 60739 117781 0 0 3 0x14200 bored softnet0 66176 133281 0 0 3 0x14200 bored systqmp 99171 363788 0 0 3 0x14200 bored systq 47775 473784 0 0 3 0x14200 tmoslp softclockmp 21163 426534 0 0 3 0x40014200 tmoslp softclock 70169 113430 0 0 3 0x40014200 idle0 1 4685 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 (0xfffffd80536b9340) #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 &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 49368 (syz-executor) thread 0xffff8000ffff47b8 (223727) exclusive rwlock amaplk r = 0 (0xfffffd805768d6a0) #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 12265 (syslogd) thread 0xffff8000ffffd6d8 (5764) exclusive rrwlock inode r = 0 (0xfffffd806e29c920) #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 10182 11047K 11059K 166960K 11284 0 pcb 17 14K 16K 166960K 19 0 rtable 218 6K 6K 166960K 564 0 pf 31 16K 16K 166960K 48 0 ifaddr 40 7K 7K 166960K 76 0 ifgroup 50 2K 2K 166960K 83 0 counters 64 36K 36K 166960K 80 0 ioctlops 0 0K 2K 166960K 38 0 iov 1 1K 16K 166960K 14 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1456 91K 91K 166960K 1517 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 8 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 27 101K 149K 166960K 400 0 sigio 0 0K 0K 166960K 9 0 proc 58 79K 164K 166960K 713 0 subproc 104 6K 12K 166960K 234 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 13 0 in_multi 89 6K 7K 166960K 177 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 553 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 253 74K 130K 166960K 4450 0 UVM aobj 41 4K 4K 166960K 41 0 pinsyscall 49 98K 122K 166960K 1602 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 14 0 NDP 25 1K 2K 166960K 49 0 temp 42 6815K 6943K 166960K 5252 0 kqueue 14 22K 32K 166960K 54 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 61 0 57 1 0 1 1 0 8 0 rtentry 112 191 0 89 4 0 4 4 0 8 1 unpcb 144 160 0 140 2 1 1 2 0 8 0 syncache 336 7 0 7 2 1 1 1 0 8 1 tcpqe 32 4 0 4 1 1 0 1 0 8 0 tcpcb 808 77 0 69 2 0 2 2 0 8 0 arp 120 33 0 16 1 0 1 1 0 8 0 inpcb 336 398 0 386 15 11 4 13 0 8 2 nd6 136 45 0 24 1 0 1 1 0 8 0 kcovpl 48 18 0 10 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 770 0 356 31 5 26 29 0 8 0 art_table 32 771 0 356 4 0 4 4 0 8 0 art_node 16 190 0 97 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semapl 112 6 0 3 1 0 1 1 0 8 0 shmpl 112 38 0 0 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1738 0 221 95 0 95 95 0 8 0 ffsino 272 1738 0 221 102 0 102 102 0 8 0 nchpl 144 2109 0 424 63 0 63 63 0 8 0 uvmvnodes 80 1981 0 0 41 0 41 41 0 8 0 vnodes 216 1981 0 0 111 0 111 111 0 8 0 namei 1024 7045 0 7045 2 1 1 1 0 8 1 percpumem 16 54 0 8 1 0 1 1 0 8 0 kstatmem 264 38 0 16 2 0 2 2 0 8 0 scxspl 216 8251 0 8250 9 8 1 8 1 8 0 plimitpl 152 82 0 58 2 0 2 2 0 8 0 sigapl 424 655 0 597 8 0 8 8 0 8 0 futexpl 64 2045 0 2040 2 1 1 1 0 8 0 knotepl 120 290 0 0 9 0 9 9 0 8 0 kqueuepl 216 65 0 53 1 0 1 1 0 8 0 pipepl 320 146 0 118 4 0 4 4 0 8 1 fdescpl 496 636 0 597 8 1 7 7 0 8 1 filepl 152 2562 0 2310 20 6 14 16 0 8 2 lockfpl 104 32 0 30 1 0 1 1 0 8 0 lockfspl 48 16 0 14 1 0 1 1 0 8 0 sessionpl 144 33 0 17 1 0 1 1 0 8 0 pgrppl 48 55 0 31 1 0 1 1 0 8 0 ucredpl 104 210 0 192 1 0 1 1 0 8 0 zombiepl 144 597 0 597 1 0 1 1 0 8 1 processpl 1160 655 0 597 6 0 6 6 0 8 0 procpl 648 880 0 812 7 0 7 7 0 8 1 srpgc 96 2 0 2 1 0 1 1 0 8 1 sosppl 168 4 0 4 1 1 0 1 0 8 0 sockpl 664 621 0 585 18 12 6 15 0 8 2 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 143 0 0 18 0 18 18 0 8 0 mcl2k 2048 21 0 0 3 0 3 3 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 232 0 0 14 0 14 14 0 8 0 bufpl 280 5631 0 94 396 0 396 396 0 8 0 anonpl 24 175749 0 172212 109 8 101 109 0 185 72 amapchunkpl 152 14889 0 14336 56 8 48 56 0 158 25 amappl16 200 4087 0 4066 5 3 2 5 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 127 0 116 1 0 1 1 0 8 0 amappl13 176 10 0 10 1 1 0 1 0 8 0 amappl12 168 1362 0 1325 2 0 2 2 0 8 0 amappl11 160 51 0 41 1 0 1 1 0 8 0 amappl10 152 16 0 16 1 1 0 1 0 8 0 amappl9 144 125 0 125 1 1 0 1 0 8 0 amappl8 136 22 0 21 1 0 1 1 0 8 0 amappl7 128 111 0 100 1 0 1 1 0 8 0 amappl6 120 237 0 234 1 0 1 1 0 8 0 amappl5 112 160 0 152 1 0 1 1 0 8 0 amappl4 104 305 0 290 1 0 1 1 0 8 0 amappl3 96 2815 0 2690 4 0 4 4 0 8 0 amappl2 88 781 0 719 2 0 2 2 0 8 0 amappl1 80 9306 0 8738 14 0 14 14 0 8 1 amappl 88 4037 0 3841 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 40 0 0 1 0 1 1 0 8 0 uaddrrnd 24 636 0 597 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 636 0 597 1 0 1 1 0 8 0 vmmpekpl 168 6654 0 6592 4 0 4 4 0 8 0 vmmpepl 168 47932 0 45882 98 3 95 96 0 357 1 vmsppl 448 635 0 597 6 0 6 6 0 8 1 rwobjpl 56 19976 0 17065 43 0 43 43 0 8 0 pdppl 4096 1279 0 1194 139 42 97 109 0 8 12 pvpl 32 60819 0 0 491 0 491 491 0 265 0 pmappl 248 635 0 597 5 1 4 4 0 8 1 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 438 0 62 11 0 11 11 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(fffffd80536b9300) at mtx_leave+0x17c sys/kern/kern_lock.c:335 msleep(fffffd80536b9218,fffffd80536b9300,4,ffffffff832a21d0,0) at msleep+0x125 sys/kern/kern_synch.c:249 vm_map_lock_ln(fffffd80536b91e8,ffffffff830d8373,6f3) at vm_map_lock_ln+0xd4 sys/uvm/uvm_map.c:5250 uvmfault_lookup(ffff80002a77a4d0,1) at uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1779 uvm_fault_check(ffff80002a77a4d0,ffff80002a77a508,ffff80002a77a530) at uvm_fault_check+0x83e uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline] uvm_fault_check(ffff80002a77a4d0,ffff80002a77a508,ffff80002a77a530) at uvm_fault_check+0x83e sys/uvm/uvm_fault.c:710 uvm_fault(fffffd80536b91e8,200b0000,0,1) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff80002a77a670,200b0000) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80002a77a670) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b _copyin() at _copyin+0x57 syscall(ffff80002a77aac0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a77aac0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5ecd7324020, 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: 0x5ed85df2220, 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: 0x5ed85df2220, count: -5