uvm_fault(0xfffffd806f6683e8, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82a83cd0 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003b81c0d0 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82a83cd0 Starting stack trace... panic(ffffffff8333e810) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003b81c020) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001493000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:579 dtclose(11e5f,81,2000,ffff8000ffff19c8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000ffff19c8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003b81c1d0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8066f5fcc8,81,fffffd807f7d2618,ffff8000ffff19c8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8073fdbe00,ffff8000ffff19c8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8073fdbe00,ffff8000ffff19c8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8073fdbe00,ffff8000ffff19c8) at fdrop+0x126 sys/kern/kern_descrip.c:1265 closef(fffffd8073fdbe00,ffff8000ffff19c8) at closef+0x192 sys/kern/kern_descrip.c:1249 fdfree(ffff8000ffff19c8) at fdfree+0x116 sys/kern/kern_descrip.c:1181 exit1(ffff8000ffff19c8,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff8000ffff19c8,ffff80003b81c540,ffff80003b81c490) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003b81c540) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b81c540) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d86951e0f10, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 202 64 EXIT 0 4 Stopped at savectx+0xae: movl $0,%gs:0x680 TID PID UID PRFLAGS PFLAGS CPU COMMAND *225218 38109 0 0 0x4000000 1 syz-executor 272835 83131 0 0x14000 0x200 0 reaper savectx() at savectx+0xae end of kernel end trace frame: 0x6c6bfb6a280, 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(0xfffffd806f6683e8, 0x0, 0, 1) -> e ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x6c6bfb6a280, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c479400 rbx 0 rdx 0 rcx 0xffff8000fffe7c60 rax 0x34 r8 0xffff80003c479330 r9 0x1 r10 0x2dcb5a01ff43bd45 r11 0xd599e584844aabbe r12 0 r13 0 r14 0xffff8000fffe7c60 r15 0 rip 0xffffffff81a0b3ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80003c479380 ss 0x10 savectx+0xae: movl $0,%gs:0x680 ddb{1}> show proc PROC (syz-executor) tid=225218 pid=38109 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffe6f90,0xffffffff8394de90 process=0xffff80003c4db360 user=0xffff80003c474000, vmspace=0xfffffd806f668208 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 38109 483709 49707 0 2 0 syz-executor 38109 423349 49707 0 3 0x4000080 fsleep syz-executor *38109 225218 49707 0 7 0x4000000 syz-executor 47470 91756 49326 0 3 0x80 nanoslp syz-executor 47470 437624 49326 0 3 0x4000080 sbwait syz-executor 99102 17226 50782 0 3 0x80 nanoslp syz-executor 99102 134361 50782 0 3 0x4000080 fsleep syz-executor 99102 71436 50782 0 3 0x4000080 kqsel syz-executor 99102 522994 50782 0 3 0x4000080 fsleep syz-executor 50782 187033 81960 0 3 0x82 nanoslp syz-executor 68510 312265 81960 0 3 0x2 biowait syz-executor 33524 10796 0 0 3 0x14200 bored sosplice 49326 151352 81960 0 3 0x82 nanoslp syz-executor 66835 145719 81960 0 2 0x2 syz-executor 14825 157814 81960 0 3 0x82 nanoslp syz-executor 62251 402653 81960 0 3 0x82 nanoslp syz-executor 49707 254513 81960 0 3 0x82 nanoslp syz-executor 43664 179891 81960 0 2 0x2 syz-executor 81960 398176 3512 0 2 0x2 syz-executor 3512 179798 67809 0 3 0x10008a sigsusp ksh 67809 341845 70553 0 3 0x98 kqread sshd-session 70553 448408 87941 0 3 0x92 kqread sshd-session 15536 334830 1 0 3 0x100083 ttyin getty 87941 367530 1 0 3 0x88 kqread sshd 73332 128728 72991 74 3 0x1100092 bpf pflogd 72991 145792 1 0 3 0x80 sbwait pflogd 17736 22461 48771 73 3 0x1100010 biowait syslogd 48771 215148 1 0 3 0x100082 sbwait syslogd 32625 229176 1 0 3 0x100080 kqread resolvd 23622 454340 72240 77 3 0x100092 kqread dhcpleased 17532 244529 72240 77 2 0x100012 dhcpleased 72240 429480 1 0 3 0x80 kqread dhcpleased 48505 105099 0 0 3 0x14200 bored smr 46582 158365 0 0 2 0x14200 zerothread 60783 359771 0 0 3 0x14200 aiodoned aiodoned 40549 223267 0 0 3 0x14200 syncer update 40326 305689 0 0 3 0x14200 cleaner cleaner 83131 272835 0 0 7 0x14200 reaper 88141 446141 0 0 3 0x14200 pgdaemon pagedaemon 30072 518454 0 0 3 0x14200 bored viomb 38329 168490 0 0 3 0x40014200 acpi0 acpi0 72965 457080 0 0 3 0x40014200 idle1 91871 248357 0 0 3 0x14200 bored softnet3 18671 227041 0 0 3 0x14200 bored softnet2 3056 65417 0 0 3 0x14200 bored softnet1 88251 90729 0 0 2 0x14200 softnet0 97798 384985 0 0 2 0x40014200 systqmp 52436 350709 0 0 3 0x14200 bored systq 37973 492857 0 0 3 0x14200 tmoslp softclockmp 28505 378005 0 0 3 0x40014200 tmoslp softclock 60528 12575 0 0 3 0x40014200 idle0 1 11186 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 68510 (syz-executor) thread 0xffff8000fffe6a70 (312265) exclusive rrwlock inode r = 0 (0xfffffd806dd1abf8) #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 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3117 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806f3c6538) #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 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3102 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 17736 (syslogd) thread 0xffff8000ffff3c40 (22461) exclusive rrwlock inode r = 0 (0xfffffd806e23c0b0) #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_fsync+0x152 sys/kern/vfs_syscalls.c:2944 #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 83131 (reaper) thread 0xffff8000ffffcf68 (272835) exclusive rwlock vmmaplk r = 0 (0xfffffd806ebcb108) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5250 #3 uvm_map_teardown+0x5e sys/uvm/uvm_map.c:2480 #4 uvmspace_free+0xcd sys/uvm/uvm_map.c:3420 #5 reaper+0x246 sys/kern/kern_exit.c:478 #6 proc_trampoline+0x10 Process 88251 (softnet0) thread 0xffff8000ffffe520 (90729) shared rwlock softnet0 r = 0 (0xffff80000002c078) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10241 11083K 11944K 166960K 12350 0 pcb 18 14K 16K 166960K 196 0 rtable 186 7K 8K 166960K 498 0 pf 38 18K 22K 166960K 191 0 ifaddr 35 5K 7K 166960K 71 0 ifgroup 59 2K 2K 166960K 101 0 sysctl 3 1K 1K 166960K 3 0 counters 66 36K 37K 166960K 180 0 ioctlops 0 0K 4K 166960K 1698 0 iov 0 0K 16K 166960K 67 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1427 90K 90K 166960K 2083 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 40 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 93K 166960K 945 0 sigio 0 0K 0K 166960K 24 0 proc 72 91K 140K 166960K 655 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 106 0 in_multi 66 4K 7K 166960K 151 0 ether_multi 1 0K 0K 166960K 2 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 271 1208K 1208K 166960K 271 0 exec 0 0K 1K 166960K 455 0 fusefs mount 1 32K 32K 166960K 1 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 240 160K 178K 166960K 10255 0 UVM aobj 31 2K 2K 166960K 35 0 pinsyscall 40 80K 103K 166960K 2110 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 48 0 NDP 15 0K 2K 166960K 48 0 temp 77 8692K 8944K 166960K 51646 0 kqueue 13 20K 30K 166960K 186 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 90 0 87 1 0 1 1 0 8 0 rtentry 176 150 0 71 6 0 6 6 0 8 0 unpcb 144 627 0 605 6 5 1 4 0 8 0 syncache 336 5 0 5 3 2 1 1 0 8 1 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 808 280 0 273 7 6 1 7 0 8 0 arp 128 23 0 11 1 0 1 1 0 8 0 inpcb 384 871 0 859 14 6 8 8 0 8 6 nd6 144 39 0 23 2 0 2 2 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1192 51 0 51 2 1 1 1 0 8 1 pppxif 1504 3 0 3 2 1 1 1 0 8 1 pffrag 232 7 0 2 1 0 1 1 0 482 0 pffrnode 88 7 0 2 1 0 1 1 0 8 0 pffrent 40 9 0 4 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 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 72 0 11 1 0 1 1 0 8 0 pfstkey 128 72 0 11 3 0 3 3 0 8 0 pfstate 384 72 0 11 7 0 7 7 0 8 0 pfrule 1344 61 0 55 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 591 0 267 29 4 25 29 0 8 2 art_table 32 593 0 267 4 0 4 4 0 8 0 art_node 16 148 0 76 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 15 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 37 0 27 1 0 1 1 0 8 0 shmpl 112 32 0 4 1 0 1 1 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 3072 0 1568 95 0 95 95 0 8 0 ffsino 288 3072 0 1568 109 0 109 109 0 8 0 nchpl 144 4376 0 2684 64 0 64 64 0 8 0 rtmask 32 5 0 5 2 1 1 1 0 8 1 uvmvnodes 80 3610 0 0 74 0 74 74 0 8 0 vnodes 216 3610 0 0 201 0 201 201 0 8 0 namei 1024 15686 0 15685 4 3 1 2 0 8 0 percpumem 16 105 0 57 1 0 1 1 0 8 0 kstatmem 264 54 0 28 2 0 2 2 0 8 0 scsiplug 72 4 0 4 2 1 1 1 0 8 1 scxspl 216 15770 0 15768 9 8 1 8 1 8 0 plimitpl 152 298 0 280 1 0 1 1 0 8 0 sigapl 424 1270 0 1221 11 2 9 9 0 8 3 futexpl 64 12569 0 12566 1 0 1 1 0 8 0 knotepl 120 781 0 0 24 0 24 24 0 8 0 kqueuepl 224 331 0 321 6 4 2 5 0 8 1 pipepl 336 181 0 154 3 0 3 3 0 8 0 fdescpl 520 1231 0 1202 3 0 3 3 0 8 0 filepl 160 7266 0 7040 18 5 13 15 0 8 2 lockfpl 104 251 0 248 1 0 1 1 0 8 0 lockfspl 48 104 0 101 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 82 0 65 1 0 1 1 0 8 0 ucredpl 104 1140 0 1127 1 0 1 1 0 8 0 zombiepl 144 1224 0 1221 1 0 1 1 0 8 0 processpl 1192 1270 0 1221 6 0 6 6 0 8 0 procpl 656 2671 0 2613 9 1 8 8 0 8 1 srpgc 96 10 0 10 2 1 1 1 0 8 1 sosppl 168 10 0 10 2 1 1 1 0 8 1 sockpl 728 1603 0 1566 18 8 10 10 0 8 6 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 114 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 28 0 0 4 0 4 4 0 8 0 mtagpl 96 24 0 0 1 0 1 1 0 8 0 mbufpl 256 239 0 0 15 0 15 15 0 8 0 bufpl 280 5012 0 131 349 0 349 349 0 8 0 anonpl 32 10085 0 0 82 0 82 82 0 246 0 amapchunkpl 152 34218 0 33548 43 13 30 38 0 158 3 amappl16 200 3894 0 3782 21 9 12 19 0 8 0 amappl15 192 9 0 9 2 2 0 1 0 8 0 amappl14 184 119 0 107 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 1925 0 1895 4 2 2 3 0 8 0 amappl11 160 82 0 68 1 0 1 1 0 8 0 amappl10 152 6 0 5 1 0 1 1 0 8 0 amappl9 144 244 0 244 1 1 0 1 0 8 0 amappl8 136 22 0 19 1 0 1 1 0 8 0 amappl7 128 114 0 102 1 0 1 1 0 8 0 amappl6 120 211 0 207 1 0 1 1 0 8 0 amappl5 112 131 0 120 1 0 1 1 0 8 0 amappl4 104 333 0 313 1 0 1 1 0 8 0 amappl3 96 6680 0 6574 5 1 4 4 0 8 0 amappl2 88 682 0 621 2 0 2 2 0 8 0 amappl1 80 12057 0 11451 16 2 14 15 0 8 0 amappl 88 9369 0 9201 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 7 0 7 2 2 0 1 0 8 0 dma128 128 254 0 254 2 2 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 34 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1231 0 1201 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1231 0 1201 1 0 1 1 0 8 0 vmmpekpl 168 11142 0 11093 3 0 3 3 0 8 0 vmmpepl 168 83143 0 81105 107 8 99 105 0 357 3 vmsppl 480 1230 0 1201 6 1 5 5 0 8 0 rwobjpl 72 27027 0 22366 88 2 86 86 0 8 0 pdppl 4096 2470 0 2402 106 32 74 86 0 8 6 pvpl 32 18383 0 0 150 1 149 149 0 265 0 pmappl 256 1230 0 1201 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 406 0 50 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837edff0) 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(ffffffff838f4440) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838f4440) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(2) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff838f4440) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838f4440) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80002a250370,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f pmap_remove_ptes(fffffd806a607900,fffffd8008288a58,7f87c9125c48,f9224b89000,f9224b8c000,0,96343550e43c9383) at pmap_remove_ptes+0x28b pmap_remove_pv sys/arch/amd64/amd64/pmap.c:1111 [inline] pmap_remove_ptes(fffffd806a607900,fffffd8008288a58,7f87c9125c48,f9224b89000,f9224b8c000,0,96343550e43c9383) at pmap_remove_ptes+0x28b sys/arch/amd64/amd64/pmap.c:1711 pmap_do_remove(fffffd806a607900,f9224b89000,f9224b8c000,0) at pmap_do_remove+0x533 sys/arch/amd64/amd64/pmap.c:1920 uvm_unmap_kill_entry_withlock(fffffd806ebcb008,fffffd806a5cf430,0) at uvm_unmap_kill_entry_withlock+0x26f sys/uvm/uvm_map.c:1863 uvm_map_teardown(fffffd806ebcb008) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(fffffd806ebcb008) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2486 uvmspace_free(fffffd806ebcb008) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3420 end trace frame: 0xffff80002a2506a0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff837edff0) 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(ffffffff838f4440) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838f4440) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(2) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff838f4440) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff838f4440) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80002a250370,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f pmap_remove_ptes(fffffd806a607900,fffffd8008288a58,7f87c9125c48,f9224b89000,f9224b8c000,0,96343550e43c9383) at pmap_remove_ptes+0x28b pmap_remove_pv sys/arch/amd64/amd64/pmap.c:1111 [inline] pmap_remove_ptes(fffffd806a607900,fffffd8008288a58,7f87c9125c48,f9224b89000,f9224b8c000,0,96343550e43c9383) at pmap_remove_ptes+0x28b sys/arch/amd64/amd64/pmap.c:1711 pmap_do_remove(fffffd806a607900,f9224b89000,f9224b8c000,0) at pmap_do_remove+0x533 sys/arch/amd64/amd64/pmap.c:1920 uvm_unmap_kill_entry_withlock(fffffd806ebcb008,fffffd806a5cf430,0) at uvm_unmap_kill_entry_withlock+0x26f sys/uvm/uvm_map.c:1863 uvm_map_teardown(fffffd806ebcb008) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline] uvm_map_teardown(fffffd806ebcb008) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2486 uvmspace_free(fffffd806ebcb008) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3420 reaper(ffff8000ffffcf68) at reaper+0x246 sys/kern/kern_exit.c:478 end trace frame: 0x0, count: -15 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x680 savectx() at savectx+0xae end of kernel end trace frame: 0x6c6bfb6a280, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x6c6bfb6a280, count: -1