*cpu1: uvm_fault(0xfffffd80669e3d48, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7b56db19d340, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c469f10 rbx 0 rdx 0 rcx 0xffff80002a3a5ab0 rax 0x2a r8 0xffff80003c469e40 r9 0 r10 0x9a6d33fc04b56dc4 r11 0x5226e7b3cf75d236 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff82c204c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c469e90 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{0}> show proc PROC (syz-executor) tid=294569 pid=36363 tcnt=2 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a3a6550,0xffff800035feb010 process=0xffff800032be2fa0 user=0xffff80003c464000, vmspace=0xfffffd80669e35c8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *36363 294569 44521 0 7 0 syz-executor 36363 353990 44521 0 3 0x4000080 fsleep syz-executor 89567 105895 10501 0 2 0 syz-executor 89567 126083 10501 0 3 0x4000080 lockf syz-executor 89567 475955 10501 0 3 0x4000080 fsleep syz-executor 93124 229067 34305 0 2 0 syz-executor 93124 400291 34305 0 3 0x4000080 msgwait syz-executor 93124 411785 34305 0 3 0x4000080 fsleep syz-executor 29677 64737 0 0 3 0x14200 acct acct 62254 116208 32970 0 3 0x80 nanoslp syz-executor 62254 113848 32970 0 3 0x4000080 ttyout syz-executor 62254 442491 32970 0 3 0x4000080 fsleep syz-executor 55065 292284 27837 0 3 0x80 nanoslp syz-executor 55065 345765 27837 0 3 0x4000080 msgwait syz-executor 55065 214133 27837 0 3 0x4000080 fsleep syz-executor 74424 103015 0 0 3 0x14280 nfsidl nfsio 83393 4514 0 0 3 0x14280 nfsidl nfsio 36920 121050 0 0 3 0x14280 nfsidl nfsio 92523 209796 0 0 3 0x14280 nfsidl nfsio 48055 476877 0 0 3 0x14280 nfsidl nfsio 61976 352384 0 0 3 0x14280 nfsidl nfsio 74450 504765 0 0 3 0x14280 nfsidl nfsio 9868 12759 0 0 3 0x14280 nfsidl nfsio 3133 358340 0 0 3 0x14280 nfsidl nfsio 74304 109303 0 0 3 0x14280 nfsidl nfsio 79326 283789 0 0 3 0x14280 nfsidl nfsio 41848 62611 0 0 3 0x14280 nfsidl nfsio 54206 283709 0 0 3 0x14280 nfsidl nfsio 94150 523007 0 0 3 0x14280 nfsidl nfsio 87946 352135 0 0 3 0x14280 nfsidl nfsio 130 200837 0 0 3 0x14280 nfsidl nfsio 33529 27632 0 0 3 0x14280 nfsidl nfsio 8878 123679 0 0 3 0x14280 nfsidl nfsio 92515 85105 0 0 3 0x14280 nfsidl nfsio 82608 91455 0 0 3 0x14280 nfsidl nfsio 32970 103180 11151 0 3 0x82 nanoslp syz-executor 2834 242226 0 0 3 0x14200 bored sosplice 44521 446165 11151 0 3 0x82 nanoslp syz-executor 27837 244629 11151 0 3 0x82 nanoslp syz-executor 46915 85155 11151 0 3 0x82 wait syz-executor 44319 395039 11151 0 3 0x2 biowait syz-executor 90950 510701 11151 0 3 0x82 nanoslp syz-executor 10501 395280 11151 0 3 0x82 nanoslp syz-executor 34305 367923 11151 0 3 0x82 nanoslp syz-executor 11151 39984 60435 0 2 0x2 syz-executor 60435 427154 72008 0 3 0x10008a sigsusp ksh 72008 431359 54587 0 3 0x98 kqread sshd-session 54587 314144 46712 0 3 0x92 kqread sshd-session 69917 469999 1 0 3 0x100083 ttyin getty 46712 19190 1 0 3 0x88 kqread sshd 12119 482909 22174 74 3 0x1100092 bpf pflogd 22174 110209 1 0 3 0x80 sbwait pflogd 20896 9282 91651 73 3 0x1100090 kqread syslogd 91651 76144 1 0 3 0x100082 sbwait syslogd 98004 453038 1 0 3 0x100080 kqread resolvd 94366 444786 18967 77 3 0x100092 kqread dhcpleased 95476 88805 18967 77 3 0x100092 kqread dhcpleased 18967 159255 1 0 3 0x80 kqread dhcpleased 50638 16236 0 0 3 0x14200 bored smr 94510 38537 0 0 2 0x14200 zerothread 78922 303614 0 0 3 0x14200 aiodoned aiodoned 52005 404724 0 0 3 0x14200 syncer update 5441 42517 0 0 3 0x14200 cleaner cleaner 7977 292976 0 0 3 0x14200 reaper reaper 34534 293483 0 0 3 0x14200 pgdaemon pagedaemon 16550 296058 0 0 3 0x14200 bored viomb 16240 208388 0 0 3 0x40014200 acpi0 acpi0 79200 288951 0 0 3 0x40014200 idle1 70468 356475 0 0 3 0x14200 bored softnet3 74453 164629 0 0 3 0x14200 bored softnet2 95993 72147 0 0 3 0x14200 bored softnet1 8672 378306 0 0 3 0x14200 bored softnet0 96468 298889 0 0 3 0x14200 bored systqmp 36087 402921 0 0 3 0x14200 bored systq 62938 471983 0 0 3 0x14200 tmoslp softclockmp 19115 402219 0 0 3 0x40014200 tmoslp softclock 34480 306645 0 0 3 0x40014200 idle0 1 269812 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806bcca410) #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 pmap_enter+0x246 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_enter+0x246 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_enter+0x246 sys/arch/amd64/amd64/pmap.c:2770 #4 uvm_fault_lower+0x60a sys/uvm/uvm_fault.c:1542 #5 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 36363 (syz-executor) thread 0xffff80002a3a5ab0 (294569) exclusive rwlock amaplk r = 0 (0xfffffd806cc4f2f8) #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 uvm_fault_check+0x5a9 sys/uvm/uvm_fault.c:862 #3 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #5 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #6 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd80669e36c8) #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_read+0x3af sys/kern/kern_rwlock.c:405 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1924 #3 uvm_fault_check+0x4a sys/uvm/uvm_fault.c:741 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #6 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #7 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806bcca410) #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 pmap_enter+0x246 rcr3 machine/cpufunc.h:139 [inline] #3 pmap_enter+0x246 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_enter+0x246 sys/arch/amd64/amd64/pmap.c:2770 #4 uvm_fault_lower+0x60a sys/uvm/uvm_fault.c:1542 #5 uvm_fault+0x278 sys/uvm/uvm_fault.c:-1 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 #7 usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 #8 recall_trap+0x8 Process 44319 (syz-executor) thread 0xffff80002a2a4558 (395039) exclusive rrwlock inode r = 0 (0xfffffd8074d098a8) #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:527 #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:3109 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c5988b8) #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:527 #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:3094 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10245 11242K 11438K 166960K 12639 0 pcb 17 16K 17K 166960K 182 0 rtable 246 8K 8K 166960K 510 0 pf 37 18K 22K 166960K 91 0 ifaddr 44 7K 8K 166960K 65 0 ifgroup 55 2K 2K 166960K 97 0 sysctl 3 1K 1K 166960K 5 0 counters 64 36K 36K 166960K 100 0 ioctlops 0 0K 4K 166960K 1653 0 iov 0 0K 24K 166960K 34 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1417 89K 89K 166960K 2135 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 24 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 801 0 sigio 0 0K 0K 166960K 8 0 proc 72 91K 128K 166960K 660 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 81 0 in_multi 99 7K 7K 166960K 136 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 523 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 242 160K 173K 166960K 9073 0 UVM aobj 23 2K 4K 166960K 25 0 pinsyscall 42 84K 100K 166960K 1948 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 36 0 NDP 12 0K 1K 166960K 42 0 temp 54 8683K 8808K 166960K 31629 0 kqueue 13 20K 30K 166960K 123 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 120 111 0 107 2 1 1 2 0 8 0 rtentry 176 137 0 25 6 0 6 6 0 8 0 unpcb 144 480 0 460 6 4 2 4 0 8 0 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 808 385 0 379 16 14 2 8 0 8 1 arp 128 24 0 5 1 0 1 1 0 8 0 inpcb 384 942 0 931 22 14 8 9 0 8 6 nd6 144 31 0 4 2 0 2 2 0 8 0 pkpcb 40 4 0 4 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 11 0 11 3 2 1 1 0 8 1 pppxif 1504 2 0 2 1 1 0 1 0 8 0 pffrag 232 7 0 1 1 0 1 1 0 482 0 pffrnode 88 7 0 1 1 0 1 1 0 8 0 pffrent 40 8 0 2 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 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 57 0 14 1 0 1 1 0 8 0 pfstkey 128 58 0 15 2 0 2 2 0 8 0 pfstate 384 58 0 15 5 0 5 5 0 8 0 pfrule 1344 92 0 21 8 1 7 7 0 8 1 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 556 0 100 31 2 29 31 0 8 0 art_table 32 557 0 100 4 0 4 4 0 8 0 art_node 16 136 0 36 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 8 1 0 1 1 0 8 0 semapl 112 21 0 11 1 0 1 1 0 8 0 shmpl 112 22 0 2 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 2839 0 1326 95 0 95 95 0 8 0 ffsino 288 2839 0 1326 109 0 109 109 0 8 0 nchpl 144 3961 0 3429 64 31 33 64 0 8 8 rtmask 32 2 0 2 2 1 1 1 0 8 1 uvmvnodes 80 3423 0 0 70 0 70 70 0 8 0 vnodes 216 3423 0 0 191 0 191 191 0 8 0 namei 1024 13148 0 13147 3 2 1 2 0 8 0 percpumem 16 65 0 18 1 0 1 1 0 8 0 kstatmem 264 48 0 24 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 11912 0 11911 9 8 1 8 1 8 0 plimitpl 152 291 0 273 1 0 1 1 0 8 0 sigapl 424 1135 0 1064 10 1 9 9 0 8 0 futexpl 64 10100 0 10095 1 0 1 1 0 8 0 knotepl 120 534 0 0 17 0 17 17 0 8 0 kqueuepl 224 210 0 201 2 0 2 2 0 8 1 pipepl 336 146 0 118 3 0 3 3 0 8 0 fdescpl 520 1091 0 1060 3 0 3 3 0 8 0 filepl 160 6177 0 5953 26 11 15 19 0 8 4 lockfpl 104 527 0 523 2 1 1 2 0 8 0 lockfspl 48 90 0 87 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 45 0 28 1 0 1 1 0 8 0 ucredpl 104 1044 0 1031 1 0 1 1 0 8 0 zombiepl 144 1263 0 1261 2 1 1 1 0 8 0 processpl 1216 1135 0 1064 6 0 6 6 0 8 0 procpl 680 2253 0 2173 8 0 8 8 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 9 0 9 2 1 1 1 0 8 1 sockpl 728 1549 0 1514 22 12 10 10 0 8 5 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 84 0 0 11 0 11 11 0 8 0 mtagpl 96 56 0 0 2 0 2 2 0 8 0 mbufpl 256 464 0 0 29 0 29 29 0 8 0 bufpl 280 3562 0 121 246 0 246 246 0 8 0 anonpl 32 7641 0 0 62 0 62 62 0 246 0 amapchunkpl 152 29567 0 29073 42 11 31 31 0 158 10 amappl16 200 2481 0 2448 6 3 3 5 0 8 0 amappl15 192 6 0 6 2 2 0 1 0 8 0 amappl14 184 118 0 106 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 1769 0 1738 3 1 2 2 0 8 0 amappl11 160 51 0 37 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 257 0 256 1 0 1 1 0 8 0 amappl8 136 29 0 27 1 0 1 1 0 8 0 amappl7 128 124 0 112 1 0 1 1 0 8 0 amappl6 120 201 0 197 1 0 1 1 0 8 0 amappl5 112 132 0 123 1 0 1 1 0 8 0 amappl4 104 348 0 328 1 0 1 1 0 8 0 amappl3 96 5777 0 5664 6 2 4 4 0 8 0 amappl2 88 682 0 617 2 0 2 2 0 8 0 amappl1 80 11433 0 10831 16 1 15 15 0 8 0 amappl 88 8206 0 8040 6 1 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 128 254 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 24 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1091 0 1060 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1091 0 1060 1 0 1 1 0 8 0 vmmpekpl 168 10068 0 10020 3 0 3 3 0 8 0 vmmpepl 168 73069 0 71078 99 3 96 96 0 357 4 vmsppl 480 1090 0 1060 6 1 5 5 0 8 0 rwobjpl 72 23999 0 19615 81 1 80 80 0 8 0 pdppl 4096 2189 0 2120 109 38 71 83 0 8 2 pvpl 32 15266 0 0 125 2 123 123 0 265 0 pmappl 256 1090 0 1060 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 444 0 59 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7b56db19d340, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) 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 x86_bus_space_io_write_1(3f8,0,65) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:774 comcnputc(800,65) at comcnputc+0x1ab bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,65) at comcnputc+0x1ab sys/dev/ic/com.c:1263 cnputc(65) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff833fdda6) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff8339bb75) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff8000323ddaf0,0) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff8000323ddaf0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000148c000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:579 end trace frame: 0xffff8000323ddc20, count: 0 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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 x86_bus_space_io_write_1(3f8,0,65) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:774 comcnputc(800,65) at comcnputc+0x1ab bus_space_barrier machine/bus.h:481 [inline] comcnputc(800,65) at comcnputc+0x1ab sys/dev/ic/com.c:1263 cnputc(65) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff833fdda6) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff8339bb75) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff8000323ddaf0,0) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff8000323ddaf0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000148c000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:579 dtclose(11e5f,81,2000,ffff80002a3a6550) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a3a6550) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff8000323ddca0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80631aee98,81,fffffd807f7d33a8,ffff80002a3a6550) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8061d08208,ffff80002a3a6550) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8061d08208,ffff80002a3a6550) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8061d08208,ffff80002a3a6550) at fdrop+0x126 sys/kern/kern_descrip.c:1265 closef(fffffd8061d08208,ffff80002a3a6550) at closef+0x192 sys/kern/kern_descrip.c:1249 fdfree(ffff80002a3a6550) at fdfree+0x116 sys/kern/kern_descrip.c:1181 exit1(ffff80002a3a6550,b,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff80002a3a6550,ffff8000323de010,ffff8000323ddf60) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000323de010) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000323de010) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x76d37f573f60, count: -25