uvm_fault(0xfffffd806c851d78, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81db49d8 cs 8 rflags 10246 cr2 0 cpl 0 rsp ffff80003c45d230 gsbase 0xffff8000299ddff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81db49d8 Starting stack trace... panic(ffffffff833deb52) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c45d180) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff8000015ef000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80003c44a7f0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c44a7f0) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c45d330) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e57f8c0,81,fffffd80097fd410,ffff80003c44a7f0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c8372d0,ffff80003c44a7f0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c8372d0,ffff80003c44a7f0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c8372d0,ffff80003c44a7f0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c8372d0,ffff80003c44a7f0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c44a7f0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c44a7f0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c44a7f0,ffff80003c45d6a0,ffff80003c45d5f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c45d6a0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c45d6a0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79da89a46b20, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND 408206 38858 0 0 0x4000000 0 syz-executor *231286 66002 0 0 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x71e02903df00, count: 14 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}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806c851d78, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x71e02903df00, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002f3c9450 rbx 0 rdx 0 rcx 0xffff800037bfd4e0 rax 0x2a r8 0xffff80002f3c9380 r9 0x1 r10 0x108c53467134d68c r11 0x3c497961f895bc8 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff820c94c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002f3c93d0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=231286 pid=66002 tcnt=7 stat=onproc flags process=0 proc=0 runpri=81, usrpri=81, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c44aa88,0xffff8000ffff34e8 process=0xffff80003c40d368 user=0xffff80002f3c4000, vmspace=0xfffffd806c851208 estcpu=31, cpticks=13, pctcpu=0.13, user=9, sys=0, intr=4 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 38858 205033 40846 0 2 0 syz-executor 38858 408206 40846 0 7 0x4000000 syz-executor 3868 164363 10588 0 2 0 syz-executor 3868 402042 10588 0 2 0x4000000 syz-executor 2192 44852 87697 0 2 0 syz-executor 2192 510860 87697 0 3 0x4000080 fsleep syz-executor 13872 26583 6140 0 2 0 syz-executor 13872 173002 6140 0 3 0x4000080 fsleep syz-executor 12619 122177 91622 0 4 0x82000 syz-executor 12619 381734 91622 0 3 0x4082000 biowait syz-executor 12619 33613 91622 0 3 0x4002000 suspend syz-executor 8638 18705 55285 0 3 0x4000080 nanoslp syz-executor 8638 250530 55285 0 3 0x4000080 rest syz-executor 8638 362658 55285 0 3 0x4000080 fsleep syz-executor 8638 361825 55285 0 3 0x4000080 fsleep syz-executor *66002 231286 31634 0 7 0 syz-executor 66002 261456 31634 0 3 0x4000000 biowait syz-executor 66002 451565 31634 0 3 0x4000080 fsleep syz-executor 66002 26568 31634 0 3 0x4000000 inode syz-executor 66002 316255 31634 0 3 0x4000080 kqread syz-executor 66002 363323 31634 0 3 0x4000080 fsleep syz-executor 66002 11986 31634 0 3 0x4000080 fsleep syz-executor 66587 362104 0 0 3 0x14280 nfsidl nfsio 83349 97609 0 0 3 0x14280 nfsidl nfsio 91622 92251 94738 0 2 0x2 syz-executor 87697 268755 94738 0 3 0x82 nanoslp syz-executor 10588 178426 94738 0 3 0x82 nanoslp syz-executor 40846 364297 94738 0 3 0x82 nanoslp syz-executor 86083 161416 94738 0 3 0x82 nanoslp syz-executor 55285 510345 94738 0 3 0x82 nanoslp syz-executor 31634 494562 94738 0 2 0x2 syz-executor 6140 425942 94738 0 3 0x82 nanoslp syz-executor 94738 500820 65802 0 3 0x82 kqread syz-executor 65802 81882 91793 0 3 0x10008a sigsusp ksh 91793 473989 77772 0 3 0x98 kqread sshd-session 77772 444706 99953 0 3 0x92 kqread sshd-session 36623 110147 1 0 3 0x100083 ttyin getty 99953 131624 1 0 3 0x88 kqread sshd 30195 428542 20484 74 3 0x1100092 bpf pflogd 20484 240248 1 0 3 0x80 sbwait pflogd 51547 230104 44825 73 3 0x1100090 kqread syslogd 44825 264076 1 0 3 0x100082 sbwait syslogd 95531 394631 1 0 3 0x100080 kqread resolvd 84025 276052 96574 77 3 0x100092 kqread dhcpleased 23765 330507 96574 77 3 0x100092 kqread dhcpleased 96574 18237 1 0 3 0x80 kqread dhcpleased 89093 125762 0 0 3 0x14200 bored smr 73652 231700 0 0 2 0x14200 zerothread 77013 261650 0 0 3 0x14200 aiodoned aiodoned 83511 447076 0 0 3 0x14200 syncer update 48106 440888 0 0 3 0x14200 cleaner cleaner 73256 391331 0 0 3 0x14200 reaper reaper 31640 117159 0 0 3 0x14200 pgdaemon pagedaemon 16989 325440 0 0 3 0x14200 bored viomb 1746 206650 0 0 3 0x40014200 acpi0 acpi0 32300 119858 0 0 3 0x40014200 idle1 86749 519418 0 0 3 0x14200 bored softnet1 67936 423447 0 0 3 0x14200 netlock softnet0 54293 187275 0 0 2 0x40014200 systqmp 22428 292857 0 0 3 0x14200 bored systq 53408 57527 0 0 3 0x14200 tmoslp softclockmp 36934 81305 0 0 3 0x40014200 tmoslp softclock 536 229557 0 0 3 0x40014200 idle0 1 71843 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 12619 (syz-executor) thread 0xffff80003c44ad20 (381734) exclusive rrwlock inode r = 0 (0xfffffd806c8dcd98) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 66002 (syz-executor) thread 0xffff8000ffff34d8 (261456) exclusive rrwlock inode r = 0 (0xfffffd806e737938) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 66002 (syz-executor) thread 0xffff80003c44a2c0 (26568) exclusive rrwlock inode r = 0 (0xfffffd806c8dc8f8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 vn_open+0x15a sys/kern/vfs_vnops.c:140 #8 doopenat+0x35b sys/kern/vfs_syscalls.c:1138 #9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #10 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11072 12165K 14048K 166960K 13194 0 pcb 18 14K 14K 166960K 213 0 rtable 197 7K 8K 166960K 441 0 pf 34 17K 18K 166960K 80 0 ifaddr 36 6K 7K 166960K 70 0 ifgroup 51 2K 2K 166960K 100 0 sysctl 4 1K 9K 166960K 12 0 counters 68 36K 37K 166960K 116 0 ioctlops 0 0K 4K 166960K 1628 0 iov 0 0K 16K 166960K 42 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1428 90K 90K 166960K 1921 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 28 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 774 0 sigio 0 0K 0K 166960K 7 0 proc 75 131K 164K 166960K 604 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 71 0 in_multi 74 5K 7K 166960K 133 0 ether_multi 1 0K 0K 166960K 8 0 mrt 0 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 518 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 259 153K 170K 166960K 9258 0 UVM aobj 21 4K 6K 166960K 23 0 pinsyscall 43 86K 108K 166960K 1951 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 56 0 NDP 11 0K 2K 166960K 46 0 temp 80 8680K 8756K 166960K 32654 0 kqueue 13 20K 32K 166960K 146 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 120 134 0 131 2 0 2 2 0 8 1 rtentry 176 129 0 48 5 0 5 5 0 8 0 unpcb 144 382 0 362 3 1 2 2 0 8 1 syncache 336 7 0 7 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 165 0 160 1 0 1 1 0 8 0 arp 136 19 0 3 1 0 1 1 0 8 0 inpcb 328 711 0 702 6 2 4 4 0 8 2 nd6 152 27 0 8 1 0 1 1 0 8 0 pkpcb 40 7 0 7 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 19 0 19 1 0 1 1 0 8 1 pppxif 1504 2 0 2 1 1 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 6 0 0 1 0 1 1 0 482 0 pffrnode 88 6 0 0 1 0 1 1 0 8 0 pffrent 40 6 0 0 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 2 0 0 1 0 1 1 0 8 0 pfstkey 128 3 0 1 2 1 1 1 0 8 0 pfstate 448 2 0 1 2 1 1 1 0 8 0 rttmr 136 2 0 2 2 1 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 609 0 248 29 3 26 29 0 8 0 art_table 40 611 0 248 5 0 5 5 0 8 0 art_node 32 128 0 55 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 23 0 13 1 0 1 1 0 8 0 shmpl 112 20 0 2 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2877 0 1369 96 0 96 96 0 8 0 ffsino 296 2877 0 1369 118 0 118 118 0 8 0 nchpl 144 4015 0 2315 64 0 64 64 0 8 0 rtmask 32 3 0 3 1 1 0 1 0 8 0 vnodes 216 3233 0 0 180 0 180 180 0 8 0 namei 1024 13019 0 13018 2 1 1 2 0 8 0 percpumem 16 73 0 24 1 0 1 1 0 8 0 kstatmem 264 60 0 36 3 1 2 3 0 8 0 scsiplug 72 5 0 5 1 0 1 1 0 8 1 scxspl 216 27745 0 27743 10 3 7 8 1 8 6 plimitpl 152 206 0 187 1 0 1 1 0 8 0 sigapl 424 1100 0 1050 7 1 6 7 0 8 0 knotepl 120 736 0 0 23 0 23 23 0 8 0 kqueuepl 224 263 0 253 4 2 2 3 0 8 1 pipepl 344 188 0 161 3 0 3 3 0 8 0 fdescpl 528 1080 0 1048 3 0 3 3 0 8 0 filepl 160 6111 0 5886 16 0 16 16 0 8 6 lockfpl 104 558 0 555 2 1 1 2 0 8 0 lockfspl 48 110 0 107 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 102 0 85 1 0 1 1 0 8 0 ucredpl 104 958 0 944 1 0 1 1 0 8 0 zombiepl 144 1051 0 1050 1 0 1 1 0 8 0 processpl 1232 1100 0 1050 6 1 5 5 0 8 0 procpl 664 2273 0 2208 6 0 6 6 0 8 0 sosppl 176 2 0 2 2 1 1 1 0 8 1 sockpl 752 1250 0 1218 9 2 7 7 0 8 2 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 123 0 0 16 0 16 16 0 8 0 mcl2k 2048 31 0 0 4 0 4 4 0 8 0 mtagpl 96 7 0 0 1 0 1 1 0 8 0 mbufpl 256 1174 0 0 74 0 74 74 0 8 0 bufpl 280 12606 0 6470 439 0 439 439 0 8 0 anonpl 32 13842 0 0 112 0 112 112 0 246 0 amapchunkpl 152 30112 0 29574 29 0 29 29 0 158 6 amappl16 200 5325 0 5183 39 14 25 34 0 8 9 amappl15 192 15 0 15 1 1 0 1 0 8 0 amappl14 184 20 0 20 1 1 0 1 0 8 0 amappl13 176 439 0 438 1 0 1 1 0 8 0 amappl12 168 1459 0 1416 3 0 3 3 0 8 0 amappl11 160 40 0 40 1 1 0 1 0 8 0 amappl10 152 48 0 34 1 0 1 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 34 0 32 1 0 1 1 0 8 0 amappl7 128 82 0 81 1 0 1 1 0 8 0 amappl6 120 280 0 267 1 0 1 1 0 8 0 amappl5 112 84 0 73 1 0 1 1 0 8 0 amappl4 104 450 0 419 1 0 1 1 0 8 0 amappl3 96 5089 0 4991 4 1 3 3 0 8 0 amappl2 88 1230 0 1153 2 0 2 2 0 8 0 amappl1 80 13034 0 12430 16 0 16 16 0 8 1 amappl 88 8365 0 8183 5 0 5 5 0 92 0 uvmvnodes 80 130 0 0 3 0 3 3 0 8 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 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 128 256 0 256 2 1 1 1 0 8 1 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 22 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1081 0 1049 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1081 0 1049 1 0 1 1 0 8 0 vmmpekpl 168 10855 0 10820 2 0 2 2 0 8 0 vmmpepl 168 78223 0 76113 118 4 114 114 0 357 14 vmsppl 488 1080 0 1049 5 1 4 5 0 8 0 rwobjpl 80 24997 0 23788 37 2 35 35 0 8 4 pdppl 4096 2169 0 2098 111 40 71 87 0 8 0 pvpl 32 22381 0 0 181 0 181 181 0 265 0 pmappl 256 1080 0 1049 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 351 0 48 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83860ff0) 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(ffffffff8394d980) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8394d980) at __mp_lock+0x199 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff8394d980) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8394d980) at __mp_lock+0x199 sys/kern/kern_lock.c:173 intr_handler(ffff80003c481ae0,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f Xspllower() at Xspllower+0x1d vm_map_lock_ln(fffffd800b0631e8,ffffffff8335f25b,3b4) at vm_map_lock_ln+0x11d sys/uvm/uvm_map.c:5162 uvm_mmaplock(fffffd800b0631e8,ffff80003c481db8,40000,3,800000) at uvm_mmaplock+0x75 sys/uvm/uvm_mmap.c:949 sys_mmap(ffff800037bfca80,ffff80003c481f20,ffff80003c481e70) at sys_mmap+0xa80 sys/uvm/uvm_mmap.c:426 end trace frame: 0xffff80003c481f10, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83860ff0) 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(ffffffff8394d980) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8394d980) at __mp_lock+0x199 sys/kern/kern_lock.c:173 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff8394d980) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8394d980) at __mp_lock+0x199 sys/kern/kern_lock.c:173 intr_handler(ffff80003c481ae0,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f Xspllower() at Xspllower+0x1d vm_map_lock_ln(fffffd800b0631e8,ffffffff8335f25b,3b4) at vm_map_lock_ln+0x11d sys/uvm/uvm_map.c:5162 uvm_mmaplock(fffffd800b0631e8,ffff80003c481db8,40000,3,800000) at uvm_mmaplock+0x75 sys/uvm/uvm_mmap.c:949 sys_mmap(ffff800037bfca80,ffff80003c481f20,ffff80003c481e70) at sys_mmap+0xa80 sys/uvm/uvm_mmap.c:426 syscall(ffff80003c481f20) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c481f20) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x89687c84580, count: -16 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x71e02903df00, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x71e02903df00, count: -1