panic: mtx 0xffffffff8391f278: locking against myself Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *156510 77308 32767 0x10 0 0 syz-executor 335919 44572 0 0x2 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e4510) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff8391f278) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff8391f278) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd80049a0ab8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80049a0ab8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80049a0ab8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8065331e88,0,ffff80003100e808,ffff80003100e7e4,0,2,f35c21f3c5a22123,ffff80003100ea60) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003100ea28,ffff80003100ea60,ffff80003100e890,ffff80003100e898) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003100ea28,ffff80003100ea60,ffff80003100e9a0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806b197d48,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003100ebb0,2000000001c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003100ebb0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7b98dc50b2b0, 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 0xffffffff8391f278: locking against myself ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833e4510) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff8391f278) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff8391f278) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd80049a0ab8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80049a0ab8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80049a0ab8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8065331e88,0,ffff80003100e808,ffff80003100e7e4,0,2,f35c21f3c5a22123,ffff80003100ea60) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003100ea28,ffff80003100ea60,ffff80003100e890,ffff80003100e898) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003100ea28,ffff80003100ea60,ffff80003100e9a0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806b197d48,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003100ebb0,2000000001c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003100ebb0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7b98dc50b2b0, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003100e550 rbx 0xffffffff837f4dcf cpu_info_full_primary+0x2dcf rdx 0 rcx 0xffff8000ffff0cf0 rax 0xffffffff837f3ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe4bfccc3b0f289e1 r11 0xebee065f1cf84e15 r12 0xffffffff837f4bd0 cpu_info_full_primary+0x2bd0 r13 0 r14 0 r15 0x1 rip 0xffffffff82dc9305 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003100e540 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=156510 pid=77308 tcnt=4 stat=onproc flags process=10 proc=0 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff19c0,0xffff8000ffff14b0 process=0xffff8000fffed760 user=0xffff800031009000, vmspace=0xfffffd806b197d48 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *77308 156510 90596 32767 7 0x10 syz-executor 77308 322148 90596 32767 3 0x4000090 fsleep syz-executor 77308 428902 90596 32767 3 0x4000010 biowait syz-executor 77308 370142 90596 32767 2 0x4000010 syz-executor 44572 335919 21491 0 7 0x2 syz-executor 23221 236943 53354 32767 3 0x90 nanoslp syz-executor 23221 26739 53354 32767 3 0x4000090 pipewr syz-executor 23221 44003 53354 32767 3 0x4000090 pipewr syz-executor 23221 424814 53354 32767 3 0x4000090 fsleep syz-executor 64192 16598 1 0 3 0x80 nanoslp init 22706 173623 0 0 3 0x14200 bored sosplice 18326 321942 35692 0 3 0x82 sbwait sshd-session 8098 285904 53113 32767 3 0x90 piperd syz-executor 90596 478541 50652 32767 3 0x90 nanoslp syz-executor 76564 13835 30978 32767 3 0x90 piperd syz-executor 53354 293135 96009 32767 3 0x90 nanoslp syz-executor 52863 151959 39754 32767 3 0x90 wait syz-executor 25824 371418 32514 32767 3 0x90 nanoslp syz-executor 53113 425537 21491 0 3 0x82 wait syz-executor 30978 495364 21491 0 3 0x82 wait syz-executor 50652 30133 21491 0 3 0x82 wait syz-executor 96009 490578 21491 0 3 0x82 wait syz-executor 32514 272157 21491 0 3 0x82 wait syz-executor 39754 300937 21491 0 3 0x82 wait syz-executor 21491 443501 48168 0 3 0x82 nanoslp syz-executor 48168 423838 81925 0 3 0x10008a sigsusp ksh 81925 465893 42574 0 3 0x98 kqread sshd-session 42574 336739 35692 0 3 0x92 kqread sshd-session 35692 138801 1 0 3 0x88 kqread sshd 96140 300028 63966 73 3 0x1100090 kqread syslogd 63966 374639 1 0 3 0x100082 sbwait syslogd 51049 492513 1 0 3 0x100080 kqread resolvd 59555 521529 40914 77 3 0x100092 kqread dhcpleased 76610 24606 40914 77 3 0x100092 kqread dhcpleased 40914 269986 1 0 3 0x80 kqread dhcpleased 87759 216226 0 0 3 0x14200 bored smr 60117 165713 0 0 3 0x14200 pgzero zerothread 85830 302738 0 0 3 0x14200 aiodoned aiodoned 15437 432607 0 0 3 0x14200 syncer update 60930 114049 0 0 3 0x14200 cleaner cleaner 55099 231933 0 0 3 0x14200 reaper reaper 96581 452135 0 0 3 0x14200 pgdaemon pagedaemon 39274 394378 0 0 3 0x14200 bored viomb 11526 59544 0 0 3 0x40014200 acpi0 acpi0 22014 360295 0 0 3 0x40014200 idle1 56158 406489 0 0 3 0x14200 bored softnet3 56845 236043 0 0 3 0x14200 bored softnet2 17460 404108 0 0 3 0x14200 bored softnet1 36169 153639 0 0 3 0x14200 bored softnet0 84030 74766 0 0 3 0x14200 bored systqmp 41824 58012 0 0 3 0x14200 bored systq 36741 480401 0 0 3 0x14200 tmoslp softclockmp 96895 343839 0 0 3 0x40014200 tmoslp softclock 51810 360204 0 0 3 0x40014200 idle0 1 120015 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 (0xffffffff8391f288) #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 77308 (syz-executor) thread 0xffff8000ffff0cf0 (156510) exclusive rwlock uobjlk r = 0 (0xfffffd8064e79b28) #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 (0xffffffff8391f288) #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 77308 (syz-executor) thread 0xffff8000ffff14a0 (322148) exclusive rwlock futexpl r = 0 (0xffffffff83a0d1f0) #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 (0xffffffff838b1458) #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 77308 (syz-executor) thread 0xffff8000ffff0f80 (428902) exclusive rrwlock inode r = 0 (0xfffffd80688750b0) #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 10179 10949K 10965K 166960K 11262 0 pcb 17 12K 12K 166960K 17 0 rtable 194 5K 6K 166960K 366 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 29 0 iov 0 0K 16K 166960K 12 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1335 84K 84K 166960K 1644 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 8 0K 1K 166960K 9 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 66K 121K 166960K 353 0 proc 54 78K 115K 166960K 488 0 subproc 54 3K 4K 166960K 360 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 15 0 in_multi 77 5K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 423 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 230 163K 185K 166960K 4115 0 UVM aobj 6 3K 3K 166960K 7 0 pinsyscall 41 82K 108K 166960K 1393 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 9 0K 2K 166960K 27 0 temp 32 8683K 8747K 166960K 4683 0 kqueue 13 20K 26K 166960K 36 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 53 0 49 1 0 1 1 0 8 0 rtentry 176 113 0 23 6 0 6 6 0 8 0 unpcb 144 89 0 72 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 808 38 0 31 2 0 2 2 0 8 1 arp 128 19 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 384 185 0 109 8 0 8 8 0 8 0 nd6 144 25 0 6 1 0 1 1 0 8 0 kcovpl 48 40 0 34 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 456 0 88 29 0 29 29 0 8 4 art_table 32 457 0 88 4 0 4 4 0 8 0 art_node 16 112 0 30 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 4 1 0 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 6 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1688 0 144 97 0 97 97 0 8 0 ffsino 288 1688 0 144 111 0 111 111 0 8 0 nchpl 144 1995 0 283 64 0 64 64 0 8 0 uvmvnodes 80 2057 0 0 42 0 42 42 0 8 0 vnodes 216 2057 0 0 115 0 115 115 0 8 0 namei 1024 6274 0 6274 1 0 1 1 0 8 1 percpumem 16 46 0 2 1 0 1 1 0 8 0 kstatmem 264 22 0 4 2 0 2 2 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scxspl 216 6603 0 6601 10 2 8 8 1 8 7 plimitpl 152 111 0 90 2 0 2 2 0 8 1 sigapl 424 574 0 522 7 0 7 7 0 8 0 futexpl 64 1150 0 1148 1 0 1 1 0 8 0 knotepl 120 105 0 0 4 0 4 4 0 8 0 kqueuepl 224 47 0 36 1 0 1 1 0 8 0 pipepl 336 204 0 176 3 0 3 3 0 8 0 fdescpl 520 555 0 523 3 0 3 3 0 8 0 filepl 160 2267 0 2008 11 0 11 11 0 8 0 lockfpl 104 21 0 18 1 0 1 1 0 8 0 lockfspl 48 11 0 8 1 0 1 1 0 8 0 sessionpl 144 54 0 39 1 0 1 1 0 8 0 pgrppl 48 95 0 73 1 0 1 1 0 8 0 ucredpl 104 171 0 154 1 0 1 1 0 8 0 zombiepl 144 525 0 522 1 0 1 1 0 8 0 processpl 1192 574 0 522 5 0 5 5 0 8 0 procpl 656 719 0 661 6 0 6 6 0 8 0 sosppl 168 2 0 2 1 0 1 1 0 8 1 sockpl 728 328 0 232 9 0 9 9 0 8 0 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 122 0 0 16 0 16 16 0 8 0 mcl2k 2048 31 0 0 4 0 4 4 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 248 0 0 16 0 16 16 0 8 0 bufpl 280 2382 0 117 162 0 162 162 0 8 0 anonpl 24 107479 0 104345 46 1 45 45 0 184 20 amapchunkpl 152 11692 0 11207 24 0 24 24 0 158 3 amappl16 200 2052 0 2033 15 6 9 14 0 8 8 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 109 0 99 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 1162 0 1131 2 0 2 2 0 8 0 amappl11 160 79 0 68 1 0 1 1 0 8 0 amappl10 152 40 0 40 1 1 0 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 22 0 20 1 0 1 1 0 8 0 amappl7 128 111 0 101 1 0 1 1 0 8 0 amappl6 120 171 0 167 1 0 1 1 0 8 0 amappl5 112 117 0 111 1 0 1 1 0 8 0 amappl4 104 286 0 273 1 0 1 1 0 8 0 amappl3 96 1972 0 1858 4 0 4 4 0 8 0 amappl2 88 617 0 560 2 0 2 2 0 8 0 amappl1 80 8820 0 8209 14 0 14 14 0 8 0 amappl 88 3409 0 3246 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 6 0 1 1 0 1 1 0 8 0 uaddrrnd 24 555 0 523 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 555 0 523 1 0 1 1 0 8 0 vmmpekpl 168 6821 0 6776 3 0 3 3 0 8 0 vmmpepl 168 41820 0 39875 102 0 102 102 0 357 7 vmsppl 480 554 0 523 7 1 6 6 0 8 1 rwobjpl 72 15917 0 12983 54 0 54 54 0 8 0 pdppl 4096 1118 0 1046 110 34 76 96 0 8 4 pvpl 32 13880 0 0 112 0 112 112 0 265 0 pmappl 256 554 0 523 4 1 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 404 0 37 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(ffffffff833e4510) at panic+0x1e5 sys/kern/subr_prf.c:198 mtx_enter_try(ffffffff8391f278) at mtx_enter_try+0x1bf sys/kern/kern_lock.c:271 mtx_enter(ffffffff8391f278) at mtx_enter+0x60 sys/kern/kern_lock.c:239 uvm_pageclean(fffffd80049a0ab8) at uvm_pageclean+0x290 uvm_pagedequeue sys/uvm/uvm_page.c:-1 [inline] uvm_pageclean(fffffd80049a0ab8) at uvm_pageclean+0x290 sys/uvm/uvm_page.c:980 uvm_pagefree(fffffd80049a0ab8) at uvm_pagefree+0x26 sys/uvm/uvm_page.c:1020 uvn_get(fffffd8065331e88,0,ffff80003100e808,ffff80003100e7e4,0,2,f35c21f3c5a22123,ffff80003100ea60) at uvn_get+0x68b sys/uvm/uvm_vnode.c:1118 uvm_fault_lower_io(ffff80003100ea28,ffff80003100ea60,ffff80003100e890,ffff80003100e898) at uvm_fault_lower_io+0x319 sys/uvm/uvm_fault.c:1588 uvm_fault_lower(ffff80003100ea28,ffff80003100ea60,ffff80003100e9a0) at uvm_fault_lower+0x278 sys/uvm/uvm_fault.c:1362 uvm_fault(fffffd806b197d48,200000000000,0,2) at uvm_fault+0x272 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003100ebb0,2000000001c0) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80003100ebb0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7b98dc50b2b0, 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 __mp_lock(ffffffff83a03280) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a03280) at __mp_lock+0x192 sys/kern/kern_lock.c:144 sys_mmap(ffff8000ffff19c0,ffff800031008780,ffff8000310086d0) at sys_mmap+0x62f sys/uvm/uvm_mmap.c:292 syscall(ffff800031008780) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800031008780) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7613eac22c80, count: 8 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 __mp_lock(ffffffff83a03280) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83a03280) at __mp_lock+0x192 sys/kern/kern_lock.c:144 sys_mmap(ffff8000ffff19c0,ffff800031008780,ffff8000310086d0) at sys_mmap+0x62f sys/uvm/uvm_mmap.c:292 syscall(ffff800031008780) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800031008780) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7613eac22c80, count: -7