panic: mtx 0xffffffff839ece58: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 412356 44779 32767 0x10 0 1 syz-executor *224850 40259 32767 0x10 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e5045) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff839ece58) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff839ece58) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8008186e10) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8008186e10) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8008186e10) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806ac5a710,0,ffff80003c441518,ffff80003c4414f4,0,2,5ae03a1039f5abee,ffff80003c441770) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c441738,ffff80003c441770,ffff80003c4415a0,ffff80003c4415a8) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003c441738,ffff80003c441770,ffff80003c4416b0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806c0467a8,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c4418c0,200000000040) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c4418c0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x797409b0e1c0, 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 0xffffffff839ece58: locking against myself ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e5045) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff839ece58) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff839ece58) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8008186e10) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8008186e10) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8008186e10) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806ac5a710,0,ffff80003c441518,ffff80003c4414f4,0,2,5ae03a1039f5abee,ffff80003c441770) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c441738,ffff80003c441770,ffff80003c4415a0,ffff80003c4415a8) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003c441738,ffff80003c441770,ffff80003c4416b0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806c0467a8,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c4418c0,200000000040) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c4418c0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x797409b0e1c0, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c441260 rbx 0xffffffff837e4dcf cpu_info_full_primary+0x2dcf rdx 0 rcx 0xffff8000ffff0cf0 rax 0xffffffff837e3ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x55df6ada74719625 r11 0xb1bd3fd97b4d3972 r12 0xffffffff837e4bd0 cpu_info_full_primary+0x2bd0 r13 0 r14 0 r15 0x1 rip 0xffffffff8257b905 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c441250 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=224850 pid=40259 tcnt=4 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=0xffff8000ffff0a60,0xffff8000ffff0550 process=0xffff8000398220b8 user=0xffff80003c43c000, vmspace=0xfffffd806c0467a8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=1 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 94485 259481 69132 32767 2 0x10 syz-executor 38429 387853 56252 32767 2 0x10 syz-executor 44779 412356 31535 32767 7 0x10 syz-executor 44779 233401 31535 32767 2 0x4000090 syz-executor 44779 12018 31535 32767 3 0x4000090 fsleep syz-executor 7041 222836 43156 32767 2 0x10 syz-executor *40259 224850 53562 32767 7 0x10 syz-executor 40259 21886 53562 32767 3 0x4000090 fsleep syz-executor 40259 431601 53562 32767 3 0x4000010 biowait syz-executor 40259 286777 53562 32767 3 0x4000090 fsleep syz-executor 12306 16540 78126 0 2 0x2 syz-executor 448 483554 58191 32767 3 0x90 nanoslp syz-executor 448 343383 58191 32767 3 0x4000090 nanoslp syz-executor 448 265361 58191 32767 3 0x4000090 fsleep syz-executor 30446 199275 0 0 3 0x14200 bored sosplice 56252 519908 96168 32767 3 0x90 nanoslp syz-executor 69132 339739 37881 32767 3 0x90 nanoslp syz-executor 31535 411380 10917 32767 3 0x90 nanoslp syz-executor 53562 388143 59538 32767 3 0x90 nanoslp syz-executor 58191 466733 88872 32767 3 0x90 nanoslp syz-executor 43156 201973 3058 32767 3 0x90 nanoslp syz-executor 37881 364635 78126 0 3 0x82 wait syz-executor 96168 69334 78126 0 3 0x82 wait syz-executor 10917 369975 78126 0 3 0x82 wait syz-executor 3058 459786 78126 0 3 0x82 wait syz-executor 88872 422927 78126 0 3 0x82 wait syz-executor 59538 232640 78126 0 3 0x82 wait syz-executor 78126 132718 32887 0 3 0x82 nanoslp syz-executor 32887 261683 14507 0 3 0x10008a sigsusp ksh 14507 22897 74952 0 3 0x98 kqread sshd-session 74952 418989 7586 0 3 0x92 kqread sshd-session 37997 266742 1 0 3 0x100083 ttyin getty 7586 6146 1 0 3 0x88 kqread sshd 25639 460938 15547 73 3 0x1100090 kqread syslogd 15547 91380 1 0 3 0x100082 sbwait syslogd 23962 127938 1 0 3 0x100080 kqread resolvd 31156 174918 89102 77 3 0x100092 kqread dhcpleased 86109 498239 89102 77 3 0x100092 kqread dhcpleased 89102 429427 1 0 3 0x80 kqread dhcpleased 18252 245551 0 0 3 0x14200 bored smr 83432 267436 0 0 2 0x14200 zerothread 93501 218335 0 0 3 0x14200 aiodoned aiodoned 7578 102595 0 0 3 0x14200 syncer update 9835 492889 0 0 3 0x14200 cleaner cleaner 16259 10910 0 0 3 0x14200 reaper reaper 6070 211283 0 0 3 0x14200 pgdaemon pagedaemon 61281 290059 0 0 3 0x14200 bored viomb 73630 169410 0 0 3 0x40014200 acpi0 acpi0 61847 501591 0 0 3 0x40014200 idle1 99262 480169 0 0 3 0x14200 bored softnet3 79184 507175 0 0 3 0x14200 bored softnet2 34739 397907 0 0 3 0x14200 bored softnet1 66264 189928 0 0 3 0x14200 bored softnet0 43788 201584 0 0 3 0x14200 bored systqmp 32774 188825 0 0 3 0x14200 bored systq 65028 449096 0 0 3 0x14200 tmoslp softclockmp 31066 190051 0 0 3 0x40014200 tmoslp softclock 50917 75271 0 0 3 0x40014200 idle0 1 424724 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 (0xffffffff839ece68) #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 40259 (syz-executor) thread 0xffff8000ffff0cf0 (224850) exclusive rwlock uobjlk r = 0 (0xfffffd806bdcc4e8) #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 (0xffffffff839ece68) #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 40259 (syz-executor) thread 0xffff8000ffff19c0 (21886) exclusive rwlock futexpl r = 0 (0xffffffff83989b60) #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 pool_get+0x10b sys/kern/subr_pool.c:583 #3 futex_get+0x309 sys/kern/sys_futex.c:171 #4 futex_wait+0x328 sys/kern/sys_futex.c:-1 #5 sys_futex+0x149 sys/kern/sys_futex.c:101 #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 exclusive rwlock futex r = 0 (0xffffffff83820158) #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 sys_futex+0x69 sys/kern/sys_futex.c:98 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 40259 (syz-executor) thread 0xffff80002a297208 (431601) exclusive rrwlock inode r = 0 (0xfffffd807c5a69a8) #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10181 10950K 10965K 166960K 11264 0 pcb 17 12K 12K 166960K 17 0 rtable 190 5K 6K 166960K 377 0 pf 27 16K 16K 166960K 31 0 ifaddr 34 6K 7K 166960K 44 0 ifgroup 42 1K 2K 166960K 50 0 sysctl 1 1K 1K 166960K 1 0 counters 60 35K 36K 166960K 64 0 ioctlops 0 0K 2K 166960K 34 0 iov 0 0K 16K 166960K 19 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1334 84K 84K 166960K 1763 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 12 0 VM map 2 1K 1K 166960K 2 0 sem 3 1K 1K 166960K 3 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 21 77K 121K 166960K 586 0 sigio 0 0K 0K 166960K 13 0 proc 58 79K 115K 166960K 520 0 subproc 62 3K 4K 166960K 341 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 89 0 in_multi 77 5K 7K 166960K 119 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 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 444 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 212 143K 161K 166960K 6279 0 UVM aobj 21 2K 2K 166960K 22 0 pinsyscall 42 84K 113K 166960K 1631 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 46 0 NDP 9 0K 2K 166960K 27 0 temp 47 8686K 8750K 166960K 5731 0 kqueue 13 20K 30K 166960K 85 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 120 110 0 106 2 0 2 2 0 8 1 rtentry 176 112 0 24 6 0 6 6 0 8 1 unpcb 144 476 0 459 6 1 5 6 0 8 4 syncache 336 8 0 8 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 808 275 0 265 7 1 6 7 0 8 5 arp 128 18 0 4 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 384 618 0 605 8 1 7 8 0 8 5 nd6 144 25 0 7 1 0 1 1 0 8 0 kcovpl 48 37 0 31 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 454 0 90 29 2 27 29 0 8 1 art_table 32 455 0 90 4 0 4 4 0 8 0 art_node 16 111 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 6 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 shmpl 112 19 0 1 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2168 0 629 97 0 97 97 0 8 0 ffsino 288 2168 0 629 110 0 110 110 0 8 0 nchpl 144 2828 0 1120 64 0 64 64 0 8 0 uvmvnodes 80 2518 0 0 52 0 52 52 0 8 0 vnodes 216 2518 0 0 140 0 140 140 0 8 0 namei 1024 9601 0 9601 1 0 1 1 0 8 1 percpumem 16 47 0 2 1 0 1 1 0 8 0 kstatmem 264 22 0 4 2 0 2 2 0 8 0 scxspl 216 9079 0 9077 10 5 5 8 1 8 4 plimitpl 152 199 0 177 3 1 2 2 0 8 1 sigapl 424 811 0 759 7 0 7 7 0 8 0 futexpl 64 4775 0 4771 1 0 1 1 0 8 0 knotepl 120 333 0 0 11 0 11 11 0 8 0 kqueuepl 224 185 0 175 5 4 1 5 0 8 0 pipepl 336 226 0 199 3 0 3 3 0 8 0 fdescpl 520 792 0 759 3 0 3 3 0 8 0 filepl 160 4816 0 4618 18 5 13 18 0 8 4 lockfpl 104 111 0 108 1 0 1 1 0 8 0 lockfspl 48 24 0 21 1 0 1 1 0 8 0 sessionpl 144 54 0 40 1 0 1 1 0 8 0 pgrppl 48 99 0 78 1 0 1 1 0 8 0 ucredpl 104 828 0 811 1 0 1 1 0 8 0 zombiepl 144 759 0 759 1 0 1 1 0 8 1 processpl 1192 811 0 759 5 0 5 5 0 8 0 procpl 656 1386 0 1327 7 1 6 7 0 8 1 sosppl 168 4 0 4 1 1 0 1 0 8 0 sockpl 728 1276 0 1242 24 12 12 22 0 8 8 mcl64k 65536 3 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 26 0 0 4 0 4 4 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 643 0 0 41 0 41 41 0 8 0 bufpl 280 2835 0 116 195 0 195 195 0 8 0 anonpl 32 9398 0 0 76 0 76 76 0 246 0 amapchunkpl 152 19082 0 18651 31 4 27 31 0 158 9 amappl16 200 3205 0 3184 22 12 10 14 0 8 8 amappl15 192 8 0 7 1 0 1 1 0 8 0 amappl14 184 109 0 99 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 1402 0 1371 2 0 2 2 0 8 0 amappl11 160 47 0 37 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 280 0 280 1 1 0 1 0 8 0 amappl8 136 24 0 23 1 0 1 1 0 8 0 amappl7 128 96 0 86 1 0 1 1 0 8 0 amappl6 120 175 0 172 1 0 1 1 0 8 0 amappl5 112 122 0 115 1 0 1 1 0 8 0 amappl4 104 319 0 304 1 0 1 1 0 8 0 amappl3 96 3528 0 3426 4 0 4 4 0 8 0 amappl2 88 638 0 584 2 0 2 2 0 8 0 amappl1 80 10460 0 9903 15 1 14 15 0 8 0 amappl 88 5526 0 5377 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 21 0 1 1 0 1 1 0 8 0 uaddrrnd 24 792 0 759 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 792 0 759 1 0 1 1 0 8 0 vmmpekpl 168 8668 0 8624 3 0 3 3 0 8 0 vmmpepl 168 57131 0 55219 105 3 102 105 0 357 12 vmsppl 480 791 0 759 7 1 6 6 0 8 1 rwobjpl 72 20457 0 17126 62 1 61 61 0 8 0 pdppl 4096 1592 0 1518 120 42 78 96 0 8 4 pvpl 32 16431 0 0 133 0 133 133 0 265 0 pmappl 256 791 0 759 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 440 0 48 12 0 12 12 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(ffffffff833e5045) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff839ece58) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff839ece58) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd8008186e10) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd8008186e10) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd8008186e10) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd806ac5a710,0,ffff80003c441518,ffff80003c4414f4,0,2,5ae03a1039f5abee,ffff80003c441770) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003c441738,ffff80003c441770,ffff80003c4415a0,ffff80003c4415a8) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003c441738,ffff80003c441770,ffff80003c4416b0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806c0467a8,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c4418c0,200000000040) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003c4418c0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x797409b0e1c0, 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 sys_nanosleep(ffff8000ffff14a0,ffff80003c44d160,ffff80003c44d0b0) at sys_nanosleep+0x158 sys/kern/kern_time.c:297 syscall(ffff80003c44d160) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c44d160) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x717eefd7a480, count: 9 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 sys_nanosleep(ffff8000ffff14a0,ffff80003c44d160,ffff80003c44d0b0) at sys_nanosleep+0x158 sys/kern/kern_time.c:297 syscall(ffff80003c44d160) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c44d160) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x717eefd7a480, count: -6