uvm_fault(fffffd806c445980,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c019ec0,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c019ec0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x763d52a41600, count: 2 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 0xffffffff83a12860: locking against myself ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833f852c) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83a12860) at mtx_enter_try+0x1da sys/kern/kern_lock.c:300 mtx_enter(ffffffff83a12860) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd8007fac360) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007fac360) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007fac360) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806a8807b0,0,ffff80003c019b18,ffff80003c019afc,0,2,5883a247e53a79b6,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c019d30,ffff80003c019d68,ffff80003c019bb0,ffff80003c019b98) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c019d30,ffff80003c019d68,ffff80003c019cb0) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806c445980,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c019ec0,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c019ec0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x763d52a41600, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c019850 rbx 0xffffffff83845dd7 cpu_info_full_primary+0x2dd7 rdx 0 rcx 0xffff80003c43e548 rax 0xffffffff83844ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xcc9a618387433675 r11 0x34a9d8a7fab17b99 r12 0xffffffff83845bd8 cpu_info_full_primary+0x2bd8 r13 0 r14 0 r15 0x1 rip 0xffffffff81438555 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c019840 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=264869 pid=40519 tcnt=4 stat=onproc flags process=10 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c43f738,0xffff80003c43e038 process=0xffff80003b010ea8 user=0xffff80003c014000, vmspace=0xfffffd806c445980 estcpu=36, cpticks=3, pctcpu=0.0, user=2, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *40519 264869 56098 32767 7 0x10 syz-executor 40519 183076 56098 32767 3 0x4000010 biowait syz-executor 40519 489513 56098 32767 3 0x4000090 fsleep syz-executor 40519 218870 56098 32767 3 0x4000090 fsleep syz-executor 66845 429760 42535 32767 2 0x10 syz-executor 66845 5135 42535 32767 3 0x4000090 fsleep syz-executor 24381 68111 13591 32767 2 0x10 syz-executor 96978 437040 74329 0 3 0x82 sbwait sshd-session 51167 230936 70076 32767 2 0x10 syz-executor 51167 385723 70076 32767 3 0x4000090 sbwait syz-executor 15896 269119 72774 32767 7 0x10 syz-executor 15896 71136 72774 32767 3 0x4000090 fsleep syz-executor 23303 127919 0 0 3 0x14200 bored sosplice 45308 115615 10318 32767 3 0x90 nanoslp syz-executor 45308 317003 10318 32767 3 0x4000090 ttyout syz-executor 47110 72945 25093 0 3 0x100082 sbwait arp 25093 105391 24775 0 3 0x10008a sigsusp sh 72774 267363 49057 32767 3 0x90 nanoslp syz-executor 10318 474254 46031 32767 3 0x90 nanoslp syz-executor 56098 12731 94255 32767 3 0x90 nanoslp syz-executor 70076 316788 18239 32767 3 0x90 nanoslp syz-executor 13591 362013 43836 32767 3 0x90 nanoslp syz-executor 42535 126433 31879 32767 3 0x90 nanoslp syz-executor 24775 187416 56488 0 3 0x80 wait syz-executor 18232 18893 14060 32767 3 0x10 biowait syz-executor 49057 130099 89004 0 3 0x82 wait syz-executor 94255 275888 89004 0 3 0x82 wait syz-executor 46031 434476 89004 0 3 0x82 wait syz-executor 43836 303373 89004 0 3 0x82 wait syz-executor 18239 455845 89004 0 3 0x82 wait syz-executor 31879 140772 89004 0 3 0x82 wait syz-executor 56488 470677 89004 0 3 0x82 wait syz-executor 14060 191268 89004 0 3 0x82 wait syz-executor 89004 326569 67612 0 3 0x82 kqread syz-executor 67612 497036 49177 0 3 0x10008a sigsusp ksh 49177 406858 47457 0 3 0x98 kqread sshd-session 47457 459463 74329 0 3 0x92 kqread sshd-session 30628 264836 1 0 3 0x100083 ttyin getty 74329 40737 1 0 3 0x88 kqread sshd 27086 450144 99925 73 3 0x1100090 kqread syslogd 99925 90663 1 0 3 0x100082 sbwait syslogd 8254 65706 1 0 3 0x100080 kqread resolvd 43067 116248 89251 77 3 0x100092 kqread dhcpleased 43507 127519 89251 77 3 0x100092 kqread dhcpleased 89251 88140 1 0 3 0x80 kqread dhcpleased 75737 289326 0 0 3 0x14200 bored smr 60284 158964 0 0 2 0x14200 zerothread 83479 129754 0 0 3 0x14200 aiodoned aiodoned 62035 168990 0 0 3 0x14200 syncer update 87608 68129 0 0 3 0x14200 cleaner cleaner 26059 372793 0 0 3 0x14200 reaper reaper 31286 165538 0 0 3 0x14200 pgdaemon pagedaemon 91120 292899 0 0 3 0x14200 bored viomb 65679 303289 0 0 3 0x40014200 acpi0 acpi0 38192 202581 0 0 3 0x40014200 idle1 85106 521167 0 0 3 0x14200 bored softnet3 80466 164687 0 0 3 0x14200 bored softnet2 32436 138476 0 0 3 0x14200 bored softnet1 57809 54082 0 0 3 0x14200 bored softnet0 13443 514552 0 0 3 0x14200 bored systqmp 56659 204681 0 0 3 0x14200 bored systq 31376 357800 0 0 3 0x14200 tmoslp softclockmp 78672 191433 0 0 3 0x40014200 tmoslp softclock 64055 326819 0 0 3 0x40014200 idle0 1 417356 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 (0xffffffff83a12870) #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:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #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 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 CPU 1: exclusive mutex &pr->ps_mtx r = 0 (0xffff80003b010fc8) #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:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 proc_suspend_check+0x43 sys/kern/kern_sig.c:2281 #4 sleep_signal_check+0x49 sys/kern/kern_synch.c:449 #5 sleep_finish+0x179 sys/kern/kern_synch.c:338 #6 sys_futex+0xa24 futex_wait sys/kern/sys_futex.c:301 [inline] #6 sys_futex+0xa24 sys/kern/sys_futex.c:151 #7 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #8 Xsyscall+0x128 Process 40519 (syz-executor) thread 0xffff80003c43e548 (264869) exclusive rwlock uobjlk r = 0 (0xfffffd806c422bb0) #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+0x377 sys/kern/kern_rwlock.c:310 #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 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83a12870) #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:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #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 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #8 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #9 recall_trap+0x8 Process 40519 (syz-executor) thread 0xffff80003c43ea68 (183076) exclusive rrwlock inode r = 0 (0xfffffd806a8a29e0) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 sys_ftruncate+0x1c4 sys/kern/vfs_syscalls.c:2912 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #7 Xsyscall+0x128 Process 18232 (syz-executor) thread 0xffff80002a296a58 (18893) exclusive rrwlock inode r = 0 (0xfffffd806a8a2f80) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:693 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d5b0e50) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #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 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #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 10191 10955K 10967K 166960K 11269 0 pcb 17 12K 12K 166960K 17 0 rtable 218 6K 6K 166960K 330 0 pf 31 16K 16K 166960K 31 0 ifaddr 40 7K 7K 166960K 42 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 4K 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 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 4 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 26 97K 121K 166960K 165 0 proc 58 79K 127K 166960K 468 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 9 0 in_multi 89 6K 6K 166960K 89 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 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 341 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 259 195K 195K 166960K 3020 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 50 100K 112K 166960K 1183 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 4 0 NDP 25 1K 1K 166960K 25 0 temp 35 8682K 8747K 166960K 3755 0 kqueue 13 20K 22K 166960K 24 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 37 0 33 1 0 1 1 0 8 0 rtentry 176 103 0 1 5 0 5 5 0 8 0 unpcb 144 40 0 19 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 18 0 11 1 0 1 1 0 8 0 arp 128 17 0 0 1 0 1 1 0 8 0 inpcb 328 91 0 81 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 256 412 0 0 26 0 26 26 0 8 0 art_table 32 413 0 0 4 0 4 4 0 8 0 art_node 16 102 0 9 1 0 1 1 0 8 0 semapl 112 3 0 1 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1574 0 71 94 0 94 94 0 8 0 ffsino 288 1574 0 71 108 0 108 108 0 8 0 nchpl 144 1801 0 121 63 0 63 63 0 8 0 uvmvnodes 80 1655 0 0 34 0 34 34 0 8 0 vnodes 216 1655 0 0 92 0 92 92 0 8 0 namei 1024 5460 0 5460 2 0 2 2 0 8 2 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 6120 0 6117 9 1 8 8 1 8 7 plimitpl 152 39 0 14 2 0 2 2 0 8 1 sigapl 424 446 0 388 7 0 7 7 0 8 0 knotepl 120 59 0 0 2 0 2 2 0 8 0 kqueuepl 224 21 0 12 1 0 1 1 0 8 0 pipepl 336 100 0 73 3 0 3 3 0 8 0 fdescpl 520 427 0 388 3 0 3 3 0 8 0 filepl 160 1522 0 1300 10 0 10 10 0 8 0 lockfpl 104 9 0 6 1 0 1 1 0 8 0 lockfspl 48 6 0 3 1 0 1 1 0 8 0 sessionpl 144 22 0 5 1 0 1 1 0 8 0 pgrppl 48 31 0 6 1 0 1 1 0 8 0 ucredpl 104 141 0 123 1 0 1 1 0 8 0 zombiepl 144 388 0 388 1 0 1 1 0 8 1 processpl 1240 446 0 388 5 0 5 5 0 8 0 procpl 656 489 0 424 6 0 6 6 0 8 0 sockpl 728 168 0 133 4 0 4 4 0 8 0 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 214 0 0 14 0 14 14 0 8 0 bufpl 280 2261 0 116 154 0 154 154 0 8 0 anonpl 32 3800 0 0 31 0 31 31 0 246 0 amapchunkpl 152 8554 0 8041 23 0 23 23 0 158 0 amappl16 200 2035 0 2016 5 0 5 5 0 8 3 amappl15 192 3 0 3 1 0 1 1 0 8 1 amappl14 184 107 0 95 1 0 1 1 0 8 0 amappl13 176 9 0 9 1 0 1 1 0 8 1 amappl12 168 1034 0 995 2 0 2 2 0 8 0 amappl11 160 48 0 37 1 0 1 1 0 8 0 amappl10 152 24 0 24 1 0 1 1 0 8 1 amappl9 144 245 0 245 1 0 1 1 0 8 1 amappl8 136 40 0 39 1 0 1 1 0 8 0 amappl7 128 112 0 100 1 0 1 1 0 8 0 amappl6 120 172 0 167 1 0 1 1 0 8 0 amappl5 112 116 0 109 1 0 1 1 0 8 0 amappl4 104 288 0 273 1 0 1 1 0 8 0 amappl3 96 1361 0 1242 4 0 4 4 0 8 0 amappl2 88 615 0 553 2 0 2 2 0 8 0 amappl1 80 8104 0 7422 14 0 14 14 0 8 0 amappl 88 2388 0 2208 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 427 0 388 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 427 0 388 1 0 1 1 0 8 0 vmmpekpl 168 5057 0 5029 2 0 2 2 0 8 0 vmmpepl 168 34163 0 31926 101 0 101 101 0 357 2 vmsppl 480 426 0 388 7 1 6 6 0 8 0 rwobjpl 72 14061 0 11437 48 0 48 48 0 8 0 pdppl 4096 861 0 776 109 14 95 95 0 8 10 pvpl 32 11439 0 0 93 0 93 93 0 265 0 pmappl 256 426 0 388 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 389 0 17 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(ffffffff833f852c) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83a12860) at mtx_enter_try+0x1da sys/kern/kern_lock.c:300 mtx_enter(ffffffff83a12860) at mtx_enter+0x62 sys/kern/kern_lock.c:261 uvm_pageclean(fffffd8007fac360) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007fac360) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007fac360) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806a8807b0,0,ffff80003c019b18,ffff80003c019afc,0,2,5883a247e53a79b6,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c019d30,ffff80003c019d68,ffff80003c019bb0,ffff80003c019b98) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c019d30,ffff80003c019d68,ffff80003c019cb0) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd806c445980,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c019ec0,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c019ec0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x763d52a41600, count: -13 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: 0x7bb71dbe2f20, 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: 0x7bb71dbe2f20, count: -5