uvm_fault(fffffd80777a25b0,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c44b0a0,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c44b0a0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7c76410c66a0, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: mtx 0xffffffff83a0a210: locking against myself ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e92ac) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83a0a210) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83a0a210) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800801f5f8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800801f5f8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800801f5f8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd80779e8370,0,ffff80003c44acf8,ffff80003c44acdc,0,2,4ff0e8a68e08624b,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c44af10,ffff80003c44af48,ffff80003c44ad90,ffff80003c44ad78) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c44af10,ffff80003c44af48,ffff80003c44ae90) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd80777a25b0,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c44b0a0,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c44b0a0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7c76410c66a0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c44aa40 rbx 0xffff8000299dedcf rdx 0 rcx 0xffff8000ffff02b0 rax 0xffff8000299ddff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x43841777459768ed r11 0x1e1edf7c9ef47db1 r12 0xffff8000299debd0 r13 0 r14 0 r15 0x1 rip 0xffffffff8241e645 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c44aa30 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=345577 pid=85670 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=0xffff80003c445738,0xffff8000ffff0d00 process=0xffff8000394104d8 user=0xffff80003c446000, vmspace=0xfffffd80777a25b0 estcpu=36, cpticks=2, pctcpu=0.0, user=2, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61383 259242 57265 32767 2 0x10 syz-executor 57718 255433 55926 32767 2 0x10 syz-executor 57718 37311 55926 32767 3 0x4000090 fsleep syz-executor 1099 423374 90611 32767 7 0x10 syz-executor 1099 147911 90611 32767 3 0x4000090 fsleep syz-executor 60049 109399 73725 32767 2 0x10 syz-executor 60049 492673 73725 32767 3 0x4000090 fsleep syz-executor *85670 345577 69127 32767 7 0x10 syz-executor 85670 122385 69127 32767 3 0x4000010 biowait syz-executor 85670 293641 69127 32767 2 0x4000010 syz-executor 85670 153914 69127 32767 3 0x4000090 fsleep syz-executor 33456 524056 38861 32767 2 0x10 syz-executor 25437 445037 45817 32767 3 0x90 nanoslp syz-executor 25437 216128 45817 32767 3 0x4000090 sbwait syz-executor 88885 125959 5905 0 2 0x2 syz-executor 1413 12905 0 0 3 0x14200 bored sosplice 38861 121059 85227 32767 2 0x10 syz-executor 73725 406110 21247 32767 3 0x90 nanoslp syz-executor 69127 141386 51693 32767 3 0x90 nanoslp syz-executor 57265 107112 70987 32767 3 0x90 nanoslp syz-executor 45817 145443 22388 32767 3 0x90 nanoslp syz-executor 90611 225590 92090 32767 3 0x90 nanoslp syz-executor 55926 192768 1339 32767 3 0x90 nanoslp syz-executor 85227 328778 5905 0 3 0x82 wait syz-executor 21247 117580 5905 0 3 0x82 wait syz-executor 51693 245055 5905 0 3 0x82 wait syz-executor 70987 80427 5905 0 3 0x82 wait syz-executor 92090 31468 5905 0 3 0x82 wait syz-executor 22388 381971 5905 0 3 0x82 wait syz-executor 1339 4852 5905 0 3 0x82 wait syz-executor 5905 32165 41759 0 3 0x82 kqread syz-executor 41759 33343 93944 0 3 0x10008a sigsusp ksh 93944 316215 8935 0 3 0x98 kqread sshd-session 8935 339641 83493 0 3 0x92 kqread sshd-session 56232 243786 1 0 3 0x100083 ttyin getty 83493 291218 1 0 3 0x88 kqread sshd 25714 195212 46499 73 3 0x1100090 kqread syslogd 46499 520200 1 0 3 0x100082 sbwait syslogd 6075 59831 1 0 3 0x100080 kqread resolvd 39816 456243 67284 77 3 0x100092 kqread dhcpleased 58544 430415 67284 77 3 0x100092 kqread dhcpleased 67284 182178 1 0 3 0x80 kqread dhcpleased 44519 509253 0 0 3 0x14200 bored smr 11565 366156 0 0 2 0x14200 zerothread 50757 471743 0 0 3 0x14200 aiodoned aiodoned 79178 494449 0 0 3 0x14200 syncer update 5115 48566 0 0 3 0x14200 cleaner cleaner 51711 326513 0 0 3 0x14200 reaper reaper 83921 511081 0 0 3 0x14200 pgdaemon pagedaemon 90856 68233 0 0 3 0x14200 bored viomb 10284 113467 0 0 3 0x40014200 acpi0 acpi0 15096 92826 0 0 3 0x40014200 idle1 219 471319 0 0 3 0x14200 bored softnet3 56892 379042 0 0 3 0x14200 bored softnet2 73460 510427 0 0 3 0x14200 bored softnet1 75087 45816 0 0 3 0x14200 bored softnet0 77141 515219 0 0 3 0x14200 bored systqmp 16769 231238 0 0 3 0x14200 bored systq 44234 130284 0 0 3 0x14200 tmoslp softclockmp 45618 187873 0 0 3 0x40014200 tmoslp softclock 71047 310406 0 0 3 0x40014200 idle0 1 187812 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &sched_lock r = 0 (0xffffffff839bdfe8) #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+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #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 CPU 1: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff83a0a220) #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+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #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 85670 (syz-executor) thread 0xffff8000ffff02b0 (345577) exclusive rwlock uobjlk r = 0 (0xfffffd806c0a3c00) #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+0x3ea sys/kern/kern_rwlock.c:316 #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 (0xffffffff83a0a220) #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+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #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 85670 (syz-executor) thread 0xffff8000ffff19c0 (122385) exclusive rrwlock inode r = 0 (0xfffffd806c113440) #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+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10181 10951K 10965K 166960K 11261 0 pcb 17 12K 12K 166960K 17 0 rtable 220 6K 6K 166960K 358 0 pf 29 16K 16K 166960K 31 0 ifaddr 38 6K 7K 166960K 44 0 ifgroup 46 2K 2K 166960K 50 0 sysctl 1 1K 1K 166960K 1 0 counters 62 36K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 31 0 iov 0 0K 16K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1379 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 6 0K 0K 166960K 6 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 24 89K 129K 166960K 257 0 proc 58 79K 115K 166960K 487 0 subproc 70 4K 4K 166960K 97 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 14 0 in_multi 88 6K 7K 166960K 104 0 ether_multi 1 0K 0K 166960K 3 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 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 347 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 234 155K 169K 166960K 3675 0 UVM aobj 9 3K 3K 166960K 9 0 pinsyscall 45 90K 114K 166960K 1259 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 12 0 NDP 10 0K 2K 166960K 27 0 temp 35 8650K 8714K 166960K 4666 0 kqueue 14 22K 28K 166960K 36 0 SYN cache 2 16K 16K 166960K 2 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 42 0 38 1 0 1 1 0 8 0 rtentry 176 115 0 12 6 0 6 6 0 8 0 unpcb 144 104 0 87 1 0 1 1 0 8 0 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 808 52 0 45 1 0 1 1 0 8 0 arp 128 18 0 2 1 0 1 1 0 8 0 inpcb 384 316 0 304 8 0 8 8 0 8 6 nd6 144 28 0 3 2 0 2 2 0 8 0 kcovpl 48 10 0 3 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 482 0 44 31 0 31 31 0 8 1 art_table 32 483 0 44 4 0 4 4 0 8 0 art_node 16 114 0 20 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 4 0 0 1 0 1 1 0 8 0 shmpl 112 6 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1688 0 178 95 0 95 95 0 8 0 ffsino 288 1688 0 178 108 0 108 108 0 8 0 nchpl 144 2008 0 332 63 0 63 63 0 8 0 uvmvnodes 80 1794 0 0 37 0 37 37 0 8 0 vnodes 216 1794 0 0 100 0 100 100 0 8 0 namei 1024 5950 0 5950 2 0 2 2 0 8 2 percpumem 16 47 0 1 1 0 1 1 0 8 0 kstatmem 264 22 0 2 2 0 2 2 0 8 0 scxspl 216 6482 0 6480 4 1 3 3 1 8 2 plimitpl 152 49 0 26 2 0 2 2 0 8 1 sigapl 424 524 0 469 8 0 8 8 0 8 0 knotepl 120 312 0 0 10 0 10 10 0 8 0 kqueuepl 224 41 0 31 1 0 1 1 0 8 0 pipepl 336 151 0 124 6 0 6 6 0 8 3 fdescpl 520 505 0 469 4 0 4 4 0 8 0 filepl 160 2122 0 1878 12 0 12 12 0 8 1 lockfpl 104 18 0 14 1 0 1 1 0 8 0 lockfspl 48 11 0 7 1 0 1 1 0 8 0 sessionpl 144 25 0 10 1 0 1 1 0 8 0 pgrppl 48 37 0 14 1 0 1 1 0 8 0 ucredpl 104 174 0 156 1 0 1 1 0 8 0 zombiepl 144 469 0 469 1 0 1 1 0 8 1 processpl 1208 524 0 469 5 0 5 5 0 8 0 procpl 656 693 0 631 6 0 6 6 0 8 0 sockpl 728 463 0 430 10 0 10 10 0 8 6 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 120 0 0 15 0 15 15 0 8 0 mcl2k 2048 16 0 0 2 0 2 2 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 257 0 0 17 0 17 17 0 8 0 bufpl 280 2420 0 117 165 0 165 165 0 8 0 anonpl 32 4033 0 0 33 0 33 33 0 246 0 amapchunkpl 152 10708 0 10197 24 0 24 24 0 158 2 amappl16 200 1842 0 1820 5 1 4 5 0 8 1 amappl15 192 15 0 15 1 1 0 1 0 8 0 amappl14 184 101 0 91 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 1097 0 1063 2 0 2 2 0 8 0 amappl11 160 49 0 38 1 0 1 1 0 8 0 amappl10 152 16 0 16 1 1 0 1 0 8 0 amappl9 144 255 0 254 1 0 1 1 0 8 0 amappl8 136 27 0 25 1 0 1 1 0 8 0 amappl7 128 102 0 92 1 0 1 1 0 8 0 amappl6 120 165 0 162 1 0 1 1 0 8 0 amappl5 112 113 0 107 1 0 1 1 0 8 0 amappl4 104 291 0 276 1 0 1 1 0 8 0 amappl3 96 1833 0 1714 4 0 4 4 0 8 0 amappl2 88 604 0 549 2 0 2 2 0 8 0 amappl1 80 8622 0 8058 14 0 14 14 0 8 0 amappl 88 3023 0 2853 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 8 0 0 1 0 1 1 0 8 0 uaddrrnd 24 505 0 469 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 505 0 469 1 0 1 1 0 8 0 vmmpekpl 168 5927 0 5891 3 0 3 3 0 8 0 vmmpepl 168 38503 0 36472 101 1 100 100 0 357 7 vmsppl 480 504 0 469 6 0 6 6 0 8 0 rwobjpl 72 14953 0 12322 48 0 48 48 0 8 0 pdppl 4096 1017 0 938 109 24 85 99 0 8 6 pvpl 32 13028 0 0 106 0 106 106 0 265 0 pmappl 256 504 0 469 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 399 0 26 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83846ff0) 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 db_enter_ddb() at db_enter_ddb+0x4da sys/arch/amd64/amd64/db_interface.c:348 db_ktrap(1,0,ffff80002a37cd80) at db_ktrap+0x25c sys/arch/amd64/amd64/db_interface.c:140 kerntrap(ffff80002a37cd80) at kerntrap+0x1dc sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b savectx() at savectx+0xae end of kernel end trace frame: 0x72b265831550, count: 7 ddb{0}> trace x86_ipi_db(ffffffff83846ff0) 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 db_enter_ddb() at db_enter_ddb+0x4da sys/arch/amd64/amd64/db_interface.c:348 db_ktrap(1,0,ffff80002a37cd80) at db_ktrap+0x25c sys/arch/amd64/amd64/db_interface.c:140 kerntrap(ffff80002a37cd80) at kerntrap+0x1dc sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b savectx() at savectx+0xae end of kernel end trace frame: 0x72b265831550, count: -8 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e92ac) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83a0a210) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83a0a210) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800801f5f8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800801f5f8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800801f5f8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd80779e8370,0,ffff80003c44acf8,ffff80003c44acdc,0,2,4ff0e8a68e08624b,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c44af10,ffff80003c44af48,ffff80003c44ad90,ffff80003c44ad78) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c44af10,ffff80003c44af48,ffff80003c44ae90) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd80777a25b0,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c44b0a0,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c44b0a0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7c76410c66a0, count: 2 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e92ac) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83a0a210) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83a0a210) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd800801f5f8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd800801f5f8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd800801f5f8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd80779e8370,0,ffff80003c44acf8,ffff80003c44acdc,0,2,4ff0e8a68e08624b,2) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c44af10,ffff80003c44af48,ffff80003c44ad90,ffff80003c44ad78) at uvm_fault_lower_io+0x2d1 sys/uvm/uvm_fault.c:1652 uvm_fault_lower(ffff80003c44af10,ffff80003c44af48,ffff80003c44ae90) at uvm_fault_lower+0x2bb sys/uvm/uvm_fault.c:1419 uvm_fault(fffffd80777a25b0,200000000000,0,2) at uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c44b0a0,2000000000c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c44b0a0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7c76410c66a0, count: -13