kernel: page fault trap, code=10 Stopped at acpi_pdirpa+0xd55ea: uvm_fault(0xfffffd806bf701b8, 0xe9779, 0, 1) -> e kernel: page fault trap, code=0 Stopped at db_read_bytes+0x110: movzbl 0xffffffffffffffff(%r15),%eax TID PID UID PRFLAGS PFLAGS CPU COMMAND * 47870 82945 0 0 0x4000000 0K syz-executor 252976 55959 0 0x14000 0x200 1 reaper db_read_bytes(e9779,1,ffff80002a74cf24) at db_read_bytes+0x110 sys/arch/amd64/amd64/db_memrw.c:85 db_get_value(e9779,1,0) at db_get_value+0x59 db_disasm(e9779,0) at db_disasm+0x94 db_trap(6,10) at db_trap+0x181 sys/ddb/db_trap.c:71 db_ktrap(6,10,ffff80002a74d1c0) at db_ktrap+0x303 sys/arch/amd64/amd64/db_interface.c:151 kerntrap(ffff80002a74d1c0) at kerntrap+0x1dc sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b acpi_pdirpa() at acpi_pdirpa+0xd55ea rt_clone(ffff80002a74d498,fffffd807d632740,0) at rt_clone+0x98 sys/net/route.c:383 route_mpath(fffffd807d632728,fffffd806a374d24,0,0) at route_mpath+0x170 rt_match sys/net/route.c:360 [inline] route_mpath(fffffd807d632728,fffffd806a374d24,0,0) at route_mpath+0x170 rtalloc_mpath sys/net/route.c:476 [inline] route_mpath(fffffd807d632728,fffffd806a374d24,0,0) at route_mpath+0x170 sys/net/route.c:255 in_pcbselsrc(ffff80002a74d588,fffffd806a374d20,fffffd807d6326b0) at in_pcbselsrc+0x250 in_pcbconnect(fffffd807d6326b0,fffffd806a374d00) at in_pcbconnect+0x11a sys/netinet/in_pcb.c:522 tcp_connect(ffff8000011887d8,fffffd806a374d00) at tcp_connect+0x3cb sys/netinet/tcp_usrreq.c:654 sys_connect(ffff80002a040cc0,ffff80002a74d7b0,ffff80002a74d700) at sys_connect+0x345 sys/kern/uipc_syscalls.c:422 end trace frame: 0xffff80002a74d7a0, count: 0 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: uvm_fault(0xfffffd806bf701b8, 0xe9779, 0, 1) -> e ddb{0}> trace db_read_bytes(e9779,1,ffff80002a74cf24) at db_read_bytes+0x110 sys/arch/amd64/amd64/db_memrw.c:85 db_get_value(e9779,1,0) at db_get_value+0x59 db_disasm(e9779,0) at db_disasm+0x94 db_trap(6,10) at db_trap+0x181 sys/ddb/db_trap.c:71 db_ktrap(6,10,ffff80002a74d1c0) at db_ktrap+0x303 sys/arch/amd64/amd64/db_interface.c:151 kerntrap(ffff80002a74d1c0) at kerntrap+0x1dc sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b acpi_pdirpa() at acpi_pdirpa+0xd55ea rt_clone(ffff80002a74d498,fffffd807d632740,0) at rt_clone+0x98 sys/net/route.c:383 route_mpath(fffffd807d632728,fffffd806a374d24,0,0) at route_mpath+0x170 rt_match sys/net/route.c:360 [inline] route_mpath(fffffd807d632728,fffffd806a374d24,0,0) at route_mpath+0x170 rtalloc_mpath sys/net/route.c:476 [inline] route_mpath(fffffd807d632728,fffffd806a374d24,0,0) at route_mpath+0x170 sys/net/route.c:255 in_pcbselsrc(ffff80002a74d588,fffffd806a374d20,fffffd807d6326b0) at in_pcbselsrc+0x250 in_pcbconnect(fffffd807d6326b0,fffffd806a374d00) at in_pcbconnect+0x11a sys/netinet/in_pcb.c:522 tcp_connect(ffff8000011887d8,fffffd806a374d00) at tcp_connect+0x3cb sys/netinet/tcp_usrreq.c:654 sys_connect(ffff80002a040cc0,ffff80002a74d7b0,ffff80002a74d700) at sys_connect+0x345 sys/kern/uipc_syscalls.c:422 syscall(ffff80002a74d7b0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a74d7b0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5c2b3a0bc00, count: -16 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a74cf10 rbx 0x1 rdx 0 rcx 0xffff80002a040cc0 rax 0xffffffff83481ff0 cpu_info_full_primary+0x1ff0 r8 0xffff80002a74d040 r9 0x8080808080808080 r10 0x7e79bac2c3a95d6c r11 0x43727e5e38948654 r12 0x1 r13 0x1 r14 0xffff80002a74cf25 r15 0xe977a acpi_pdirpa+0xd55eb rip 0xffffffff81ed8df0 db_read_bytes+0x110 cs 0x8 rflags 0x10282 __ALIGN_SIZE+0xf282 rsp 0xffff80002a74ceb0 ss 0x10 db_read_bytes+0x110: movzbl 0xffffffffffffffff(%r15),%eax ddb{0}> show proc PROC (syz-executor) tid=47870 pid=82945 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a03f460,0xffff80002a0416f0 process=0xffff8000fffead50 user=0xffff80002a748000, vmspace=0xfffffd806bf701b8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 73771 199286 82961 0 2 0x10 syz-executor 73771 359837 82961 0 3 0x4000090 kqread syz-executor 73771 330840 82961 0 2 0x4000010 syz-executor 47741 474225 67664 0 2 0 syz-executor 47741 316393 67664 0 3 0x4000080 bell syz-executor 82945 440327 72887 0 2 0 syz-executor *82945 47870 72887 0 7 0x4000000 syz-executor 82945 278804 72887 0 3 0x4000080 fsleep syz-executor 82945 372044 72887 0 3 0x4000080 fsleep syz-executor 53093 439329 8824 0 2 0 syz-executor 53093 339905 8824 0 3 0x4000080 fsleep syz-executor 53093 412493 8824 0 2 0x4000000 syz-executor 45944 24145 95858 60928 2 0x10 syz-executor 45944 288344 95858 60928 3 0x4000090 fsleep syz-executor 95858 453215 21582 0 3 0x82 nanoslp syz-executor 67664 159560 21582 0 2 0x482 syz-executor 31065 502992 21582 0 3 0x82 piperd syz-executor 48703 330924 21582 0 3 0x82 nanoslp syz-executor 8824 74230 21582 0 3 0x82 nanoslp syz-executor 82961 207896 21582 0 3 0x82 nanoslp syz-executor 72887 390139 21582 0 2 0x482 syz-executor 51733 500816 1 0 3 0x100083 ttyopn getty 63287 244296 0 0 3 0x14200 bored sosplice 85593 84669 0 0 3 0x14280 nfsidl nfsio 31720 320935 0 0 3 0x14280 nfsidl nfsio 24028 325062 0 0 3 0x14280 nfsidl nfsio 21311 120108 0 0 3 0x14280 nfsidl nfsio 58220 462742 0 0 3 0x14280 nfsidl nfsio 79608 251271 0 0 3 0x14280 nfsidl nfsio 67830 418751 0 0 3 0x14280 nfsidl nfsio 89213 185988 0 0 3 0x14280 nfsidl nfsio 33668 504334 0 0 3 0x14280 nfsidl nfsio 24872 387313 0 0 3 0x14280 nfsidl nfsio 23189 88065 0 0 3 0x14280 nfsidl nfsio 35394 157090 0 0 3 0x14280 nfsidl nfsio 29022 53027 0 0 3 0x14280 nfsidl nfsio 69955 4831 0 0 3 0x14280 nfsidl nfsio 8548 290111 0 0 3 0x14280 nfsidl nfsio 6733 304912 0 0 3 0x14280 nfsidl nfsio 27444 443038 0 0 3 0x14280 nfsidl nfsio 96850 61283 0 0 3 0x14280 nfsidl nfsio 88308 426570 0 0 3 0x14280 nfsidl nfsio 52670 238646 0 0 3 0x14280 nfsidl nfsio 21582 96811 64046 0 2 0x2 syz-executor 64046 410852 95721 0 3 0x10008a sigsusp ksh 95721 378072 58699 0 3 0x98 kqread sshd-session 58699 180049 84618 0 3 0x92 kqread sshd-session 84618 387483 1 0 3 0x88 kqread sshd 40371 436244 83614 74 3 0x1100092 bpf pflogd 83614 492357 1 0 3 0x80 sbwait pflogd 94532 341160 10905 73 3 0x1100090 kqread syslogd 10905 26445 1 0 3 0x100082 sbwait syslogd 23573 373760 1 0 3 0x100080 kqread resolvd 87076 260792 47088 77 3 0x100092 kqread dhcpleased 17715 382429 47088 77 3 0x100092 kqread dhcpleased 47088 419906 1 0 3 0x80 kqread dhcpleased 2209 14455 0 0 2 0x14200 smr 27714 282491 0 0 2 0x14200 zerothread 86312 408068 0 0 3 0x14200 aiodoned aiodoned 34891 18980 0 0 3 0x14200 syncer update 20819 354672 0 0 3 0x14200 cleaner cleaner 55959 252976 0 0 7 0x14200 reaper 25679 468657 0 0 3 0x14200 pgdaemon pagedaemon 25697 19277 0 0 3 0x14200 bored viomb 9877 104914 0 0 3 0x40014200 acpi0 acpi0 23401 148652 0 0 3 0x40014200 idle1 32628 474578 0 0 3 0x14200 bored softnet3 65615 56198 0 0 3 0x14200 bored softnet2 3068 244349 0 0 3 0x14200 bored softnet1 66167 486512 0 0 3 0x14200 bored softnet0 60494 472309 0 0 3 0x14200 bored systqmp 61481 491521 0 0 3 0x14200 bored systq 42355 368841 0 0 3 0x14200 tmoslp softclockmp 69802 145329 0 0 3 0x40014200 tmoslp softclock 19456 114241 0 0 3 0x40014200 idle0 1 340053 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806e096bb8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 pmap_do_remove+0xa9 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_do_remove+0xa9 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:432 [inline] #3 pmap_do_remove+0xa9 sys/arch/amd64/amd64/pmap.c:1819 #4 uvm_unmap_kill_entry_withlock+0x274 sys/uvm/uvm_map.c:1865 #5 uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 #6 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #7 reaper+0x246 sys/kern/kern_exit.c:480 #8 proc_trampoline+0x10 Process 82945 (syz-executor) thread 0xffff80002a040cc0 (47870) Process 55959 (reaper) thread 0xffff800029fd8cb0 (252976) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10225 10167K 10573K 166960K 13060 0 pcb 17 16K 18K 166960K 318 0 rtable 195 6K 7K 166960K 2132 0 pf 33 17K 25K 166960K 215 0 ifaddr 37 7K 8K 166960K 343 0 ifgroup 51 2K 2K 166960K 346 0 sysctl 3 0K 0K 166960K 3 0 counters 62 36K 37K 166960K 216 0 ioctlops 0 0K 4K 166960K 1616 0 iov 0 0K 24K 166960K 121 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1504 95K 95K 166960K 3346 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 1K 5K 166960K 32 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 107 0 dirhash 15 2K 2K 166960K 42 0 ACPI 1690 195K 286K 166960K 12418 0 file desc 15 53K 89K 166960K 2170 0 sigio 0 0K 0K 166960K 186 0 proc 72 91K 140K 166960K 2168 0 subproc 104 6K 7K 166960K 860 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 527 0 in_multi 81 5K 7K 166960K 666 0 ether_multi 1 0K 0K 166960K 12 0 mrt 1 0K 0K 166960K 4 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 1173 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 226 72K 91K 166960K 18585 0 UVM aobj 45 4K 4K 166960K 49 0 pinsyscall 40 80K 102K 166960K 4593 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 137 0 NDP 11 0K 1K 166960K 198 0 temp 78 6824K 6952K 166960K 109532 0 kqueue 16 24K 30K 166960K 223 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 120 397 0 394 6 4 2 3 0 8 1 rtentry 112 726 0 637 4 1 3 4 0 8 0 unpcb 144 992 0 973 13 12 1 6 0 8 0 syncache 336 5 0 5 2 2 0 1 0 8 0 tcpcb 808 498 0 492 16 15 1 8 0 8 0 arp 120 115 0 99 1 0 1 1 0 8 0 inpcb 336 1888 0 1878 28 26 2 12 0 8 0 nd6 136 169 0 153 1 0 1 1 0 8 0 pkpcb 40 6 0 6 3 3 0 1 0 8 0 kcovpl 48 66 0 58 1 0 1 1 0 8 0 ppxss 1168 9 0 9 4 4 0 1 0 8 0 pffrag 232 10 0 8 1 0 1 1 0 482 0 pffrnode 88 10 0 8 1 0 1 1 0 8 0 pffrent 40 13 0 11 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 169 0 117 1 0 1 1 0 8 0 pfstkey 128 169 0 117 3 0 3 3 0 8 0 pfstate 376 169 0 117 7 0 7 7 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 2576 0 2187 31 4 27 30 0 8 0 art_table 32 2578 0 2187 4 0 4 4 0 8 0 art_node 16 647 0 566 1 0 1 1 0 8 0 sysvmsgpl 40 49 0 40 1 0 1 1 0 8 0 semapl 112 104 0 94 1 0 1 1 0 8 0 shmpl 112 46 0 4 2 0 2 2 0 8 0 dirhash 1024 37 0 18 3 0 3 3 0 8 0 dino2pl 256 3912 0 2300 101 0 101 101 0 8 0 ffsino 272 3912 0 2300 108 0 108 108 0 8 0 nchpl 144 5914 0 5286 64 39 25 64 0 8 0 uvmvnodes 80 5548 0 0 114 0 114 114 0 8 0 vnodes 216 5548 0 0 309 0 309 309 0 8 0 namei 1024 25009 0 25009 4 3 1 2 0 8 1 percpumem 16 122 0 77 1 0 1 1 0 8 0 kstatmem 264 176 0 154 3 1 2 3 0 8 0 scsiplug 72 2 0 2 2 2 0 1 0 8 0 scxspl 216 46276 0 46276 13 12 1 8 1 8 1 plimitpl 152 300 0 283 1 0 1 1 0 8 0 sigapl 424 2377 0 2308 9 0 9 9 0 8 0 futexpl 64 18771 0 18767 4 3 1 1 0 8 0 knotepl 120 617 0 0 18 0 18 18 0 8 0 kqueuepl 216 484 0 472 7 6 1 5 0 8 0 pipepl 320 402 0 375 3 0 3 3 0 8 0 fdescpl 496 2337 0 2308 7 2 5 5 0 8 0 filepl 152 12763 0 12516 33 22 11 19 0 8 1 lockfpl 104 792 0 790 3 2 1 2 0 8 0 lockfspl 48 296 0 294 1 0 1 1 0 8 0 sessionpl 144 83 0 74 1 0 1 1 0 8 0 pgrppl 48 176 0 159 1 0 1 1 0 8 0 ucredpl 104 1747 0 1732 1 0 1 1 0 8 0 zombiepl 144 2310 0 2308 1 0 1 1 0 8 0 processpl 1160 2377 0 2308 6 0 6 6 0 8 0 procpl 648 4461 0 4382 10 2 8 8 0 8 0 srpgc 96 13 0 13 3 2 1 1 0 8 1 sosppl 168 4 0 4 3 3 0 1 0 8 0 sockpl 664 3305 0 3273 44 38 6 18 0 8 2 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 235 0 0 28 1 27 28 0 8 0 mtagpl 96 22 0 0 1 0 1 1 0 8 0 mbufpl 256 1007 0 0 62 0 62 62 0 8 0 bufpl 280 11597 0 5436 450 1 449 450 0 8 1 anonpl 24 337786 0 334287 72 24 48 68 0 185 15 amapchunkpl 152 59539 0 59072 39 13 26 34 0 158 7 amappl16 200 6219 0 6202 56 47 9 25 0 8 7 amappl15 192 5 0 5 3 3 0 1 0 8 0 amappl14 184 211 0 199 1 0 1 1 0 8 0 amappl13 176 25 0 25 1 1 0 1 0 8 0 amappl12 168 3819 0 3790 4 2 2 3 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 14 0 13 1 0 1 1 0 8 0 amappl9 144 143 0 143 1 1 0 1 0 8 0 amappl8 136 40 0 37 1 0 1 1 0 8 0 amappl7 128 199 0 187 1 0 1 1 0 8 0 amappl6 120 710 0 709 1 0 1 1 0 8 0 amappl5 112 358 0 345 1 0 1 1 0 8 0 amappl4 104 458 0 437 1 0 1 1 0 8 0 amappl3 96 11883 0 11777 4 0 4 4 0 8 0 amappl2 88 1409 0 1340 2 0 2 2 0 8 0 amappl1 80 16880 0 16325 15 2 13 14 0 8 0 amappl 88 17700 0 17536 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 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 7 0 7 2 2 0 1 0 8 0 dma128 128 254 0 254 2 2 0 1 0 8 0 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 21 0 20 1 0 1 1 0 8 0 aobjpl 72 48 0 4 1 0 1 1 0 8 0 uaddrrnd 24 2337 0 2308 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2337 0 2308 1 0 1 1 0 8 0 vmmpekpl 168 19350 0 19306 3 0 3 3 0 8 0 vmmpepl 168 145985 0 144194 119 26 93 104 0 357 11 vmsppl 440 2336 0 2307 6 2 4 5 0 8 0 rwobjpl 56 46147 0 39649 94 1 93 93 0 8 1 pdppl 4096 4681 0 4614 165 92 73 83 0 8 6 pvpl 32 29440 0 0 237 0 237 237 0 265 0 pmappl 248 2336 0 2307 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 563 0 151 14 1 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_read_bytes(e9779,1,ffff80002a74cf24) at db_read_bytes+0x110 sys/arch/amd64/amd64/db_memrw.c:85 db_get_value(e9779,1,0) at db_get_value+0x59 db_disasm(e9779,0) at db_disasm+0x94 db_trap(6,10) at db_trap+0x181 sys/ddb/db_trap.c:71 db_ktrap(6,10,ffff80002a74d1c0) at db_ktrap+0x303 sys/arch/amd64/amd64/db_interface.c:151 kerntrap(ffff80002a74d1c0) at kerntrap+0x1dc sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b acpi_pdirpa() at acpi_pdirpa+0xd55ea rt_clone(ffff80002a74d498,fffffd807d632740,0) at rt_clone+0x98 sys/net/route.c:383 route_mpath(fffffd807d632728,fffffd806a374d24,0,0) at route_mpath+0x170 rt_match sys/net/route.c:360 [inline] route_mpath(fffffd807d632728,fffffd806a374d24,0,0) at route_mpath+0x170 rtalloc_mpath sys/net/route.c:476 [inline] route_mpath(fffffd807d632728,fffffd806a374d24,0,0) at route_mpath+0x170 sys/net/route.c:255 in_pcbselsrc(ffff80002a74d588,fffffd806a374d20,fffffd807d6326b0) at in_pcbselsrc+0x250 in_pcbconnect(fffffd807d6326b0,fffffd806a374d00) at in_pcbconnect+0x11a sys/netinet/in_pcb.c:522 tcp_connect(ffff8000011887d8,fffffd806a374d00) at tcp_connect+0x3cb sys/netinet/tcp_usrreq.c:654 sys_connect(ffff80002a040cc0,ffff80002a74d7b0,ffff80002a74d700) at sys_connect+0x345 sys/kern/uipc_syscalls.c:422 syscall(ffff80002a74d7b0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a74d7b0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5c2b3a0bc00, count: -16 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff83632228) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83632228) at __mp_lock+0x192 sys/kern/kern_lock.c:144 uvn_detach(fffffd806dfd55c0) at uvn_detach+0x28 sys/uvm/uvm_vnode.c:310 uvm_unmap_detach(ffff800029fe5550,0) at uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1364 uvm_map_teardown(fffffd806bf70370) at uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 uvmspace_free(fffffd806bf70370) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd8cb0) at reaper+0x246 sys/kern/kern_exit.c:480 end trace frame: 0x0, count: 6 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff83632228) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83632228) at __mp_lock+0x192 sys/kern/kern_lock.c:144 uvn_detach(fffffd806dfd55c0) at uvn_detach+0x28 sys/uvm/uvm_vnode.c:310 uvm_unmap_detach(ffff800029fe5550,0) at uvm_unmap_detach+0x15e sys/uvm/uvm_map.c:1364 uvm_map_teardown(fffffd806bf70370) at uvm_map_teardown+0x35e sys/uvm/uvm_map.c:2518 uvmspace_free(fffffd806bf70370) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd8cb0) at reaper+0x246 sys/kern/kern_exit.c:480 end trace frame: 0x0, count: -9