uvm_fault(fffffd806c4a35c0,200000001000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 kpageflttrap(ffff80003c458ff0,200000001040) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80003c458ff0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 end trace frame: 0xffff80003c459210, count: 0 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: mtx 0xffffffff83988bf0: locking against myself ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e92ff) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83988bf0) at mtx_enter_try+0x1da sys/kern/kern_lock.c:284 mtx_enter(ffffffff83988bf0) at mtx_enter+0x62 sys/kern/kern_lock.c:252 uvm_pageclean(fffffd80085d7458) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80085d7458) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80085d7458) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806c43b9e0,1000,ffff80003c458c28,ffff80003c458c0c,0,0,1b06f511a617cea,0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c458e40,ffff80003c458e78,ffff80003c458cc0,ffff80003c458ca8) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c458e40,ffff80003c458e78,ffff80003c458dc0) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806c4a35c0,200000001000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 kpageflttrap(ffff80003c458ff0,200000001040) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80003c458ff0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 syscall(ffff80003c459220) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c459220) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b57c854790, count: -16 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c458960 rbx 0xffffffff8382add7 cpu_info_full_primary+0x2dd7 rdx 0 rcx 0xffff8000fffe2028 rax 0xffffffff83829ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xc7c3fc23438fa369 r11 0x2263ec747d8b81c1 r12 0xffffffff8382abd8 cpu_info_full_primary+0x2bd8 r13 0 r14 0 r15 0x1 rip 0xffffffff82fb11f5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c458950 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=408256 pid=26895 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffe27d8,0xffff8000fffe2a78 process=0xffff8000fffe4990 user=0xffff80003c454000, vmspace=0xfffffd806c4a35c0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 10978 198496 67934 32767 2 0x10 syz-executor 18214 523332 20913 0 2 0x100002 sh 26895 419007 77758 32767 7 0x10 syz-executor 26895 279896 77758 32767 3 0x4000090 fsleep syz-executor *26895 408256 77758 32767 7 0x4000010 syz-executor 26895 59377 77758 32767 3 0x4000090 fsleep syz-executor 46705 313387 99706 32767 2 0x10 syz-executor 46705 289370 99706 32767 3 0x4000090 fsleep syz-executor 23315 284834 92658 32767 2 0x10 syz-executor 23315 310657 92658 32767 3 0x4000010 biowait syz-executor 23315 96937 92658 32767 3 0x4000010 inode syz-executor 496 334829 90627 32767 3 0x90 nanoslp syz-executor 496 362038 90627 32767 3 0x4000090 fsleep syz-executor 496 341832 90627 32767 2 0x4000010 syz-executor 496 355375 90627 32767 3 0x4000090 fsleep syz-executor 11131 394004 18713 32767 2 0x10 syz-executor 37504 44415 65725 0 2 0x2 ifconfig 65725 28588 49495 0 3 0x10008a sigsusp sh 77758 232018 17785 32767 3 0x90 nanoslp syz-executor 20913 333340 7250 0 3 0x80 wait syz-executor 67934 116973 24999 32767 3 0x90 nanoslp syz-executor 49495 486217 79655 0 3 0x80 wait syz-executor 18713 346932 55278 32767 2 0x10 syz-executor 99706 139743 90455 32767 3 0x90 nanoslp syz-executor 90627 278606 19415 32767 3 0x90 nanoslp syz-executor 92658 167737 24382 32767 3 0x90 nanoslp syz-executor 7250 272467 87715 0 3 0x82 wait syz-executor 17785 41117 87715 0 3 0x82 wait syz-executor 90455 438467 87715 0 3 0x82 wait syz-executor 55278 483146 87715 0 3 0x82 wait syz-executor 24999 199291 87715 0 3 0x82 wait syz-executor 79655 355024 87715 0 3 0x82 wait syz-executor 24382 344379 87715 0 3 0x82 wait syz-executor 19415 437161 87715 0 3 0x82 wait syz-executor 87715 383537 85956 0 3 0x82 kqread syz-executor 85956 85893 49867 0 3 0x10008a sigsusp ksh 49867 392397 55242 0 3 0x98 kqread sshd-session 55242 490652 26763 0 3 0x92 kqread sshd-session 72274 148172 1 0 3 0x100083 ttyin getty 26763 10902 1 0 3 0x88 kqread sshd 99849 446629 41915 73 3 0x1100090 kqread syslogd 41915 82470 1 0 3 0x100082 sbwait syslogd 87730 501816 1 0 3 0x100080 kqread resolvd 30966 225224 38416 77 3 0x100092 kqread dhcpleased 67455 162075 38416 77 3 0x100092 kqread dhcpleased 38416 126199 1 0 3 0x80 kqread dhcpleased 31251 279107 0 0 3 0x14200 bored smr 81662 322243 0 0 2 0x14200 zerothread 60099 438432 0 0 3 0x14200 aiodoned aiodoned 83240 213652 0 0 3 0x14200 syncer update 68524 350851 0 0 3 0x14200 cleaner cleaner 68429 251612 0 0 3 0x14200 reaper reaper 30380 440337 0 0 3 0x14200 pgdaemon pagedaemon 9271 219394 0 0 3 0x14200 bored viomb 14469 355484 0 0 3 0x40014200 acpi0 acpi0 45503 115917 0 0 3 0x40014200 idle1 57065 140038 0 0 3 0x14200 bored softnet3 54113 454426 0 0 3 0x14200 bored softnet2 87547 300006 0 0 3 0x14200 bored softnet1 13301 458395 0 0 3 0x14200 bored softnet0 79660 386409 0 0 3 0x14200 bored systqmp 52082 425817 0 0 3 0x14200 bored systq 57623 104197 0 0 3 0x14200 tmoslp softclockmp 61749 46093 0 0 3 0x40014200 tmoslp softclock 1778 404366 0 0 3 0x40014200 idle0 1 131496 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83988c00) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:295 #2 mtx_enter+0x62 sys/kern/kern_lock.c:252 #3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #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 copyout+0x57 #11 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #12 Xsyscall+0x128 CPU 1: exclusive mutex &sched_lock r = 0 (0xffffffff8399a568) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:295 #2 mtx_enter+0x62 sys/kern/kern_lock.c:252 #3 sleep_setup+0xc6 sys/kern/kern_synch.c:348 #4 sys_futex+0xa39 futex_wait sys/kern/sys_futex.c:304 [inline] #4 sys_futex+0xa39 sys/kern/sys_futex.c:152 #5 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #6 Xsyscall+0x128 Process 26895 (syz-executor) thread 0xffff8000fffe2028 (408256) exclusive rwlock uobjlk r = 0 (0xfffffd806c283648) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 uvn_io+0x667 sys/uvm/uvm_vnode.c:1297 #3 uvn_get+0x31d sys/uvm/uvm_vnode.c:1102 #4 uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #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 copyout+0x57 #11 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #12 Xsyscall+0x128 exclusive rwlock fdlock r = 0 (0xffff80003c435ae0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 sys_socketpair+0x2f5 sys/kern/uipc_syscalls.c:-1 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #4 Xsyscall+0x128 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83988c00) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x1ad sys/kern/kern_lock.c:295 #2 mtx_enter+0x62 sys/kern/kern_lock.c:252 #3 uvn_get+0x679 sys/uvm/uvm_vnode.c:1117 #4 uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 #5 uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 #6 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #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 copyout+0x57 #11 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #12 Xsyscall+0x128 Process 23315 (syz-executor) thread 0xffff8000fffea2b0 (310657) exclusive rrwlock inode r = 0 (0xfffffd806c354440) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:606 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x190 sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x23c sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 Process 23315 (syz-executor) thread 0xffff8000fffe39c8 (96937) exclusive rrwlock inode r = 0 (0xfffffd806c354e60) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x367 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:606 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 sys_truncate+0x84 sys/kern/vfs_syscalls.c:2880 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10187 10954K 10966K 166960K 11264 0 pcb 17 12K 12K 166960K 17 0 rtable 226 6K 6K 166960K 328 0 pf 31 16K 16K 166960K 31 0 ifaddr 41 7K 7K 166960K 43 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 68 36K 36K 166960K 68 0 ioctlops 0 0K 2K 166960K 28 0 iov 0 0K 8K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1352 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 6 0K 0K 166960K 6 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 27 101K 125K 166960K 163 0 proc 65 91K 115K 166960K 477 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 0 0K 0K 166960K 10 0 in_multi 95 7K 7K 166960K 101 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 333 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 236 163K 167K 166960K 2861 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 48 96K 111K 166960K 1147 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 6 0 NDP 26 2K 2K 166960K 26 0 temp 34 8670K 8735K 166960K 3666 0 kqueue 13 20K 24K 166960K 27 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 34 0 31 1 0 1 1 0 8 0 rtentry 176 107 0 1 5 0 5 5 0 8 0 unpcb 144 59 0 42 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 808 17 0 13 1 0 1 1 0 8 0 arp 128 18 0 0 1 0 1 1 0 8 0 inpcb 384 81 0 71 2 0 2 2 0 8 0 nd6 144 21 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 435 0 0 28 0 28 28 0 8 0 art_table 32 436 0 0 4 0 4 4 0 8 0 art_node 16 106 0 9 1 0 1 1 0 8 0 semapl 112 4 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1575 0 73 94 0 94 94 0 8 0 ffsino 288 1575 0 73 108 0 108 108 0 8 0 nchpl 144 1792 0 115 63 0 63 63 0 8 0 uvmvnodes 80 1656 0 0 34 0 34 34 0 8 0 vnodes 216 1656 0 0 92 0 92 92 0 8 0 namei 1024 5256 0 5255 2 0 2 2 0 8 1 percpumem 16 49 0 0 1 0 1 1 0 8 0 kstatmem 264 24 0 0 2 0 2 2 0 8 0 scxspl 216 5884 0 5882 3 1 2 2 1 8 1 plimitpl 152 42 0 15 2 0 2 2 0 8 0 sigapl 424 433 0 376 8 0 8 8 0 8 1 knotepl 120 59 0 0 2 0 2 2 0 8 0 kqueuepl 224 27 0 18 1 0 1 1 0 8 0 pipepl 336 95 0 68 3 0 3 3 0 8 0 fdescpl 520 415 0 376 4 0 4 4 0 8 0 filepl 160 1472 0 1255 10 0 10 10 0 8 0 lockfpl 104 8 0 4 1 0 1 1 0 8 0 lockfspl 48 6 0 2 1 0 1 1 0 8 0 sessionpl 144 21 0 5 1 0 1 1 0 8 0 pgrppl 48 29 0 5 1 0 1 1 0 8 0 ucredpl 104 111 0 94 1 0 1 1 0 8 0 zombiepl 144 376 0 376 1 0 1 1 0 8 1 processpl 1208 433 0 376 5 0 5 5 0 8 0 procpl 656 483 0 417 6 0 6 6 0 8 0 sockpl 728 174 0 144 4 0 4 4 0 8 1 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 112 0 0 14 0 14 14 0 8 0 mcl2k 2048 15 0 0 2 0 2 2 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 171 0 0 11 0 11 11 0 8 0 bufpl 280 2301 0 117 156 0 156 156 0 8 0 anonpl 32 3792 0 0 31 0 31 31 0 246 0 amapchunkpl 152 8247 0 7760 20 0 20 20 0 158 0 amappl16 200 2049 0 2020 5 0 5 5 0 8 3 amappl15 192 7 0 6 1 0 1 1 0 8 0 amappl14 184 95 0 85 1 0 1 1 0 8 0 amappl13 176 19 0 19 1 0 1 1 0 8 1 amappl12 168 997 0 960 2 0 2 2 0 8 0 amappl11 160 44 0 34 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 0 1 1 0 8 1 amappl9 144 244 0 244 1 0 1 1 0 8 1 amappl8 136 26 0 25 1 0 1 1 0 8 0 amappl7 128 87 0 77 1 0 1 1 0 8 0 amappl6 120 167 0 161 1 0 1 1 0 8 0 amappl5 112 112 0 105 1 0 1 1 0 8 0 amappl4 104 272 0 258 1 0 1 1 0 8 0 amappl3 96 1269 0 1154 3 0 3 3 0 8 0 amappl2 88 578 0 523 2 0 2 2 0 8 0 amappl1 80 7693 0 7104 14 0 14 14 0 8 1 amappl 88 2266 0 2098 4 0 4 4 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 415 0 376 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 415 0 376 1 0 1 1 0 8 0 vmmpekpl 168 4880 0 4847 2 0 2 2 0 8 0 vmmpepl 168 32584 0 30486 92 0 92 92 0 357 0 vmsppl 480 414 0 376 7 1 6 6 0 8 0 rwobjpl 72 13593 0 11072 47 0 47 47 0 8 1 pdppl 4096 837 0 752 107 10 97 97 0 8 12 pvpl 32 9839 0 0 80 0 80 80 0 265 0 pmappl 256 414 0 376 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 383 0 13 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:438 panic(ffffffff833e92ff) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83988bf0) at mtx_enter_try+0x1da sys/kern/kern_lock.c:284 mtx_enter(ffffffff83988bf0) at mtx_enter+0x62 sys/kern/kern_lock.c:252 uvm_pageclean(fffffd80085d7458) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80085d7458) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80085d7458) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806c43b9e0,1000,ffff80003c458c28,ffff80003c458c0c,0,0,1b06f511a617cea,0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c458e40,ffff80003c458e78,ffff80003c458cc0,ffff80003c458ca8) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c458e40,ffff80003c458e78,ffff80003c458dc0) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806c4a35c0,200000001000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 kpageflttrap(ffff80003c458ff0,200000001040) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff80003c458ff0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 syscall(ffff80003c459220) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c459220) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b57c854790, count: -16 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) 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 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68 savectx() at savectx+0xae end of kernel end trace frame: 0x71c856d5c510, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68 savectx() at savectx+0xae end of kernel end trace frame: 0x71c856d5c510, count: -5