panic: mtx 0xffffffff83962558: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *302186 97709 32767 0x10 0 0 syz-executor 436560 88406 32767 0x10 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833dec40) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83962558) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83962558) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8007fff238) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007fff238) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007fff238) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd805f767dd0,0,ffff80003c496d48,ffff80003c496d24,0,2,60811572377d3a68,ffff80003c496fa0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c496f68,ffff80003c496fa0,ffff80003c496dd0,ffff80003c496dd8) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003c496f68,ffff80003c496fa0,ffff80003c496ee0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806c0437b0,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c4970f0,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c4970f0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x73293a481f80, 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 0xffffffff83962558: locking against myself ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833dec40) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83962558) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83962558) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8007fff238) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007fff238) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007fff238) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd805f767dd0,0,ffff80003c496d48,ffff80003c496d24,0,2,60811572377d3a68,ffff80003c496fa0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c496f68,ffff80003c496fa0,ffff80003c496dd0,ffff80003c496dd8) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003c496f68,ffff80003c496fa0,ffff80003c496ee0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806c0437b0,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c4970f0,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c4970f0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x73293a481f80, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c496a90 rbx 0xffffffff83835dcf cpu_info_full_primary+0x2dcf rdx 0 rcx 0xffff80003c4727e0 rax 0xffffffff83834ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xcca980259cacf996 r11 0x200a70db9aa620b7 r12 0xffffffff83835bd0 cpu_info_full_primary+0x2bd0 r13 0 r14 0 r15 0x1 rip 0xffffffff81758355 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c496a80 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=302186 pid=97709 tcnt=3 stat=onproc flags process=10 proc=0 runpri=50, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c472f90,0xffff80003c473750 process=0xffff8000fffee0b0 user=0xffff80003c492000, vmspace=0xfffffd806c0437b0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *97709 302186 89912 32767 7 0x10 syz-executor 97709 461791 89912 32767 3 0x4000010 biowait syz-executor 97709 277975 89912 32767 3 0x4000090 fsleep syz-executor 88406 436560 3740 32767 7 0x10 syz-executor 88406 512023 3740 32767 3 0x4000090 msgwait syz-executor 88406 225540 3740 32767 3 0x4000090 sbwait syz-executor 88406 307854 3740 32767 3 0x4000090 sbufrcv syz-executor 88406 15816 3740 32767 3 0x4000090 sbufrcv syz-executor 15061 209039 31660 32767 2 0x10 syz-executor 15061 305100 31660 32767 3 0x4000090 fsleep syz-executor 15061 280125 31660 32767 3 0x4000090 fsleep syz-executor 38969 195627 55130 32767 3 0x90 nanoslp syz-executor 38969 173140 55130 32767 3 0x4000090 fifor syz-executor 38969 159635 55130 32767 3 0x4000090 fifor syz-executor 38969 430132 55130 32767 3 0x4000090 fsleep syz-executor 15319 321173 0 0 3 0x14200 bored sosplice 69107 111891 78455 0 3 0x82 sbwait sshd-session 55130 3231 921 32767 3 0x90 nanoslp syz-executor 3740 270989 59598 32767 3 0x90 nanoslp syz-executor 89912 296138 78489 32767 3 0x90 nanoslp syz-executor 2002 114324 80039 32767 3 0x90 wait syz-executor 31660 301324 88640 32767 3 0x90 nanoslp syz-executor 61471 249047 75639 32767 3 0x90 nanoslp syz-executor 56784 230785 73505 32767 3 0x90 nanoslp syz-executor 59598 122593 84111 0 3 0x82 wait syz-executor 78489 361286 84111 0 3 0x82 wait syz-executor 80039 291825 84111 0 3 0x82 wait syz-executor 921 523067 84111 0 3 0x82 wait syz-executor 88640 194299 84111 0 3 0x82 wait syz-executor 75639 152364 84111 0 3 0x82 wait syz-executor 40413 3913 84111 0 3 0x82 wait syz-executor 73505 474645 84111 0 3 0x82 wait syz-executor 84111 407381 16847 0 3 0x82 kqread syz-executor 16847 360255 82258 0 3 0x10008a sigsusp ksh 82258 463783 5483 0 3 0x98 kqread sshd-session 5483 484075 78455 0 3 0x92 kqread sshd-session 70516 96367 1 0 3 0x100083 ttyin getty 78455 434671 1 0 3 0x88 kqread sshd 64447 98548 50995 73 3 0x1100090 kqread syslogd 50995 123669 1 0 3 0x100082 sbwait syslogd 50166 425187 1 0 3 0x100080 kqread resolvd 18092 107303 81649 77 3 0x100092 kqread dhcpleased 29482 295840 81649 77 3 0x100092 kqread dhcpleased 81649 58739 1 0 3 0x80 kqread dhcpleased 12943 392136 0 0 3 0x14200 bored smr 77264 440288 0 0 2 0x14200 zerothread 5633 515526 0 0 3 0x14200 aiodoned aiodoned 77595 482750 0 0 3 0x14200 syncer update 52555 474071 0 0 3 0x14200 cleaner cleaner 80360 401279 0 0 3 0x14200 reaper reaper 41932 382538 0 0 3 0x14200 pgdaemon pagedaemon 35106 433851 0 0 3 0x14200 bored viomb 94117 36378 0 0 3 0x40014200 acpi0 acpi0 95014 76049 0 0 3 0x40014200 idle1 47279 140643 0 0 3 0x14200 bored softnet3 41553 288495 0 0 3 0x14200 bored softnet2 2570 285074 0 0 3 0x14200 bored softnet1 92155 301305 0 0 3 0x14200 bored softnet0 73533 497819 0 0 3 0x14200 bored systqmp 57375 436767 0 0 3 0x14200 bored systq 2150 12435 0 0 3 0x14200 tmoslp softclockmp 4428 224217 0 0 3 0x40014200 tmoslp softclock 12797 296587 0 0 3 0x40014200 idle0 1 433877 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 (0xffffffff83962568) #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+0x319 sys/uvm/uvm_fault.c:1588 #5 uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 #6 uvm_fault+0x272 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 97709 (syz-executor) thread 0xffff80003c4727e0 (302186) exclusive rwlock uobjlk r = 0 (0xfffffd805e8c40f8) #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+0x319 sys/uvm/uvm_fault.c:1588 #5 uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 #6 uvm_fault+0x272 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 (0xffffffff83962568) #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+0x319 sys/uvm/uvm_fault.c:1588 #5 uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 #6 uvm_fault+0x272 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 97709 (syz-executor) thread 0xffff80003c473740 (461791) exclusive rrwlock inode r = 0 (0xfffffd806c730f78) #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:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 sys_ftruncate+0x1c4 sys/kern/vfs_syscalls.c:2920 #6 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 88406 (syz-executor) thread 0xffff800034802548 (225540) exclusive rwlock sbufrcv r = 0 (0xffff800001442980) #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 sblock+0xb7 sys/kern/uipc_socket2.c:536 #3 soreceive+0x28e sys/kern/uipc_socket.c:881 #4 recvit+0x40a sys/kern/uipc_syscalls.c:1072 #5 sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:963 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10211 10958K 10965K 166960K 11290 0 pcb 17 12K 12K 166960K 17 0 rtable 240 6K 7K 166960K 363 0 pf 31 16K 16K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 2 1K 1K 166960K 2 0 counters 64 36K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 34 0 iov 2 6K 16K 166960K 11 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1336 84K 84K 166960K 1361 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 19 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 25 93K 125K 166960K 349 0 sigio 0 0K 0K 166960K 2 0 proc 58 79K 127K 166960K 483 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 98 0 in_multi 99 7K 7K 166960K 104 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 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 358 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 272 161K 176K 166960K 4803 0 UVM aobj 23 4K 6K 166960K 24 0 pinsyscall 48 96K 114K 166960K 1359 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 36 0 NDP 11 0K 2K 166960K 27 0 temp 48 8685K 8749K 166960K 4536 0 kqueue 14 22K 24K 166960K 49 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 81 0 78 1 0 1 1 0 8 0 rtentry 176 116 0 3 6 0 6 6 0 8 0 unpcb 144 201 0 180 2 0 2 2 0 8 0 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpcb 808 100 0 93 2 0 2 2 0 8 1 arp 128 19 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 384 311 0 295 5 0 5 5 0 8 3 nd6 144 28 0 2 2 0 2 2 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 256 481 0 24 31 0 31 31 0 8 0 art_table 32 482 0 24 4 0 4 4 0 8 0 art_node 16 115 0 12 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 16 0 6 1 0 1 1 0 8 0 shmpl 112 21 0 1 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1830 0 321 95 0 95 95 0 8 0 ffsino 288 1830 0 321 108 0 108 108 0 8 0 nchpl 144 2311 0 629 63 0 63 63 0 8 0 uvmvnodes 80 1911 0 0 39 0 39 39 0 8 0 vnodes 216 1911 0 0 107 0 107 107 0 8 0 namei 1024 6907 0 6907 2 0 2 2 0 8 2 percpumem 16 47 0 0 1 0 1 1 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 8306 0 8304 9 1 8 8 1 8 7 plimitpl 152 160 0 135 2 0 2 2 0 8 0 sigapl 424 624 0 567 8 0 8 8 0 8 0 futexpl 64 3079 0 3075 1 0 1 1 0 8 0 knotepl 120 283 0 0 9 0 9 9 0 8 0 kqueuepl 224 72 0 61 1 0 1 1 0 8 0 pipepl 336 115 0 88 3 0 3 3 0 8 0 fdescpl 520 605 0 567 4 0 4 4 0 8 0 filepl 160 2596 0 2366 13 0 13 13 0 8 2 lockfpl 104 48 0 45 1 0 1 1 0 8 0 lockfspl 48 22 0 19 1 0 1 1 0 8 0 sessionpl 144 24 0 7 1 0 1 1 0 8 0 pgrppl 48 37 0 12 1 0 1 1 0 8 0 ucredpl 104 405 0 386 1 0 1 1 0 8 0 zombiepl 144 571 0 567 1 0 1 1 0 8 0 processpl 1192 624 0 567 5 0 5 5 0 8 0 procpl 656 1003 0 935 7 0 7 7 0 8 0 sosppl 168 4 0 4 1 0 1 1 0 8 1 sockpl 728 598 0 560 7 0 7 7 0 8 3 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 120 0 0 15 0 15 15 0 8 0 mcl2k 2048 26 0 0 4 0 4 4 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 211 0 0 14 0 14 14 0 8 0 bufpl 280 2733 0 117 187 0 187 187 0 8 0 anonpl 32 7925 0 0 64 0 64 64 0 246 0 amapchunkpl 152 15480 0 14864 38 0 38 38 0 158 12 amappl16 200 2217 0 1938 16 1 15 15 0 8 0 amappl15 192 9 0 8 1 0 1 1 0 8 0 amappl14 184 105 0 94 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 1249 0 1211 2 0 2 2 0 8 0 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 14 0 14 1 1 0 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 23 0 22 1 0 1 1 0 8 0 amappl7 128 123 0 111 1 0 1 1 0 8 0 amappl6 120 173 0 169 1 0 1 1 0 8 0 amappl5 112 120 0 114 1 0 1 1 0 8 0 amappl4 104 290 0 275 1 0 1 1 0 8 0 amappl3 96 2649 0 2510 4 0 4 4 0 8 0 amappl2 88 615 0 555 2 0 2 2 0 8 0 amappl1 80 9220 0 8555 16 0 16 16 0 8 0 amappl 88 4124 0 3923 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 23 0 1 1 0 1 1 0 8 0 uaddrrnd 24 605 0 567 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 605 0 567 1 0 1 1 0 8 0 vmmpekpl 168 6553 0 6516 2 0 2 2 0 8 0 vmmpepl 168 44993 0 42469 112 0 112 112 0 357 0 vmsppl 480 604 0 567 7 1 6 6 0 8 0 rwobjpl 72 16857 0 13701 58 0 58 58 0 8 0 pdppl 4096 1218 0 1134 108 20 88 98 0 8 4 pvpl 32 16869 0 0 138 1 137 137 0 265 0 pmappl 256 604 0 567 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 396 0 23 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(ffffffff833dec40) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff83962558) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff83962558) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8007fff238) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8007fff238) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8007fff238) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd805f767dd0,0,ffff80003c496d48,ffff80003c496d24,0,2,60811572377d3a68,ffff80003c496fa0) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c496f68,ffff80003c496fa0,ffff80003c496dd0,ffff80003c496dd8) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003c496f68,ffff80003c496fa0,ffff80003c496ee0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806c0437b0,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c4970f0,200000000100) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c4970f0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x73293a481f80, count: -13 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) 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 end of kernel end trace frame: 0x7f36f787e7a0, count: 12 ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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 end of kernel end trace frame: 0x7f36f787e7a0, count: -3