*cpu1: uvm_fault(0xfffffd806c218d78, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x795d83e90060, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800037bf1db0 rbx 0 rdx 0 rcx 0xffff800035fe6020 rax 0x2a r8 0xffff800037bf1ce0 r9 0 r10 0x6afde5fd2309587c r11 0xd47dee91cf4e9c29 r12 0 r13 0xffffffff814b9858 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff827d14c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff800037bf1d30 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=344787 pid=40512 tcnt=4 stat=onproc flags process=0 proc=0 runpri=78, usrpri=78, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800035fe6a80,0xffff8000ffffc2b0 process=0xffff800035fea6a0 user=0xffff800037bec000, vmspace=0xfffffd806c218208 estcpu=28, cpticks=4, pctcpu=0.1, user=3, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 79148 11043 7404 0 2 0 syz-executor 79148 457777 7404 0 7 0x4000000 syz-executor 79148 151361 7404 0 3 0x4000080 fsleep syz-executor 79148 481301 7404 0 3 0x4000080 fsleep syz-executor 28923 171296 81356 0 2 0 syz-executor 28923 417226 81356 0 3 0x4000080 fsleep syz-executor 77919 388742 4967 0 2 0x10 syz-executor 77919 103261 4967 0 3 0x4000090 fsleep syz-executor 84733 217149 38676 0 2 0 syz-executor 84733 242652 38676 0 3 0x4000080 fsleep syz-executor 40429 202219 50118 0 2 0 syz-executor 40429 209049 50118 0 3 0x4000080 fsleep syz-executor 40429 257165 50118 0 3 0x4000080 fsleep syz-executor *40512 344787 31659 0 7 0 syz-executor 40512 421679 31659 0 2 0x4000000 syz-executor 40512 267226 31659 0 3 0x4000080 msgwait syz-executor 40512 432063 31659 0 3 0x4000080 fsleep syz-executor 21326 404735 8539 0 2 0x2 syz-executor 4967 408531 8539 0 3 0x82 nanoslp syz-executor 81356 238421 8539 0 3 0x82 nanoslp syz-executor 38676 141543 8539 0 3 0x82 nanoslp syz-executor 91153 369828 8539 0 3 0x2 biowait syz-executor 7404 421279 8539 0 3 0x82 nanoslp syz-executor 31659 214905 8539 0 3 0x82 nanoslp syz-executor 50118 40647 8539 0 3 0x82 nanoslp syz-executor 8539 515761 19859 0 2 0x2 syz-executor 19859 394734 67892 0 3 0x10008a sigsusp ksh 67892 310306 29775 0 3 0x98 kqread sshd-session 29775 125202 21260 0 3 0x92 kqread sshd-session 32347 159143 1 0 3 0x100083 ttyin getty 21260 416521 1 0 3 0x88 kqread sshd 37233 391114 37833 74 3 0x1100092 bpf pflogd 37833 503960 1 0 3 0x80 sbwait pflogd 95759 128616 80893 73 3 0x1100090 kqread syslogd 80893 94177 1 0 3 0x100082 sbwait syslogd 52412 133456 1 0 3 0x100080 kqread resolvd 85216 59460 18682 77 3 0x100092 kqread dhcpleased 76097 396095 18682 77 3 0x100092 kqread dhcpleased 18682 356567 1 0 3 0x80 kqread dhcpleased 86581 467969 0 0 3 0x14200 bored smr 63499 453664 0 0 2 0x14200 zerothread 63741 55828 0 0 3 0x14200 aiodoned aiodoned 71193 330947 0 0 3 0x14200 syncer update 42968 170814 0 0 3 0x14200 cleaner cleaner 60332 471576 0 0 3 0x14200 reaper reaper 46567 12408 0 0 3 0x14200 pgdaemon pagedaemon 61593 85535 0 0 3 0x14200 bored viomb 17070 333455 0 0 3 0x40014200 acpi0 acpi0 59865 437654 0 0 3 0x40014200 idle1 1436 249746 0 0 3 0x14200 bored softnet1 39759 67640 0 0 3 0x14200 bored softnet0 11175 279255 0 0 3 0x14200 bored systqmp 57541 428558 0 0 3 0x14200 bored systq 82243 332369 0 0 3 0x14200 tmoslp softclockmp 52334 19755 0 0 3 0x40014200 tmoslp softclock 30846 106667 0 0 3 0x40014200 idle0 1 152871 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &sched_lock r = 0 (0xffffffff83925770) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:483 #2 yield+0x35 sys/kern/sched_bsd.c:321 #3 pool_get+0x27e sys/kern/subr_pool.c:591 #4 _rw_obj_alloc_flags+0x4d sys/kern/kern_rwlock.c:713 #5 amap_alloc+0xd6 sys/uvm/uvm_amap.c:-1 #6 amap_copy+0x6ac sys/uvm/uvm_amap.c:569 #7 uvm_fault_check+0x483 sys/uvm/uvm_fault.c:753 #8 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #9 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #10 usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 #11 recall_trap+0x8 Process 79148 (syz-executor) thread 0xffff800037bf7780 (457777) exclusive rwlock dtlk r = 0 (0xffffffff838161e8) #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 dt_ioctl_record_stop+0x2e sys/dev/dt/dt_dev.c:572 #3 dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] #3 dtclose+0x109 sys/dev/dt/dt_dev.c:239 #4 spec_close+0x466 sys/kern/spec_vnops.c:-1 #5 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #6 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #6 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #7 fdrop+0x121 sys/kern/kern_descrip.c:1280 #8 sys_ioctl+0x30b sys/kern/sys_generic.c:516 #9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839be788) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 vn_closefile+0x41 sys/kern/vfs_vnops.c:608 #2 fdrop+0x121 sys/kern/kern_descrip.c:1280 #3 sys_ioctl+0x30b sys/kern/sys_generic.c:516 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #5 Xsyscall+0x128 Process 21326 (syz-executor) thread 0xffff800035fe6a80 (404735) exclusive rwlock vmmaplk r = 0 (0xfffffd806c218120) #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_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1902 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:699 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:622 #7 recall_trap+0x8 Process 91153 (syz-executor) thread 0xffff8000fffefca0 (369828) exclusive rrwlock inode r = 0 (0xfffffd806bd81a20) #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 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:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806fe33d88) #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 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10201 11130K 12458K 166960K 11967 0 pcb 18 14K 15K 166960K 89 0 rtable 166 7K 8K 166960K 430 0 pf 28 16K 18K 166960K 77 0 ifaddr 31 5K 8K 166960K 65 0 ifgroup 43 2K 2K 166960K 95 0 sysctl 4 1K 9K 166960K 8 0 counters 62 36K 37K 166960K 122 0 ioctlops 0 0K 4K 166960K 1611 0 iov 0 0K 16K 166960K 32 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1397 88K 89K 166960K 1747 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 6K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 12 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 54K 106K 166960K 518 0 sigio 0 0K 0K 166960K 15 0 proc 72 115K 164K 166960K 561 0 subproc 63 3K 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 295 0 in_multi 65 4K 7K 166960K 114 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 9 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 796 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 232 143K 167K 166960K 6705 0 UVM aobj 78 5K 5K 166960K 79 0 pinsyscall 41 82K 107K 166960K 1642 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 25 0 NDP 9 0K 2K 166960K 42 0 temp 51 8654K 8726K 166960K 10130 0 kqueue 13 20K 26K 166960K 107 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 120 170 0 166 3 2 1 3 0 8 0 rtentry 176 126 0 60 6 1 5 6 0 8 0 unpcb 144 222 0 204 1 0 1 1 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 736 131 0 125 7 5 2 5 0 8 1 arp 136 20 0 8 1 0 1 1 0 8 0 inpcb 328 650 0 640 12 5 7 7 0 8 6 nd6 152 25 0 10 1 0 1 1 0 8 0 pkpcb 40 2 0 2 2 2 0 1 0 8 0 kcovpl 48 8 0 1 1 0 1 1 0 8 0 ppxss 1192 23 0 23 2 1 1 1 0 8 1 pppxif 1504 2 0 2 2 1 1 1 0 8 1 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 3 0 1 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 47 0 3 1 0 1 1 0 8 0 pfstkey 128 47 0 3 2 0 2 2 0 8 0 pfstate 384 47 0 3 5 0 5 5 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 rttmr 136 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 568 0 290 31 9 22 31 0 8 1 art_table 40 570 0 290 5 0 5 5 0 8 0 art_node 32 125 0 67 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 3 1 0 1 1 0 8 0 semupl 112 2 0 2 2 1 1 1 0 8 1 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 75 0 1 3 0 3 3 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2306 0 806 95 0 95 95 0 8 0 ffsino 296 2306 0 806 117 0 117 117 0 8 0 nchpl 144 3036 0 1338 64 0 64 64 0 8 0 rtmask 32 3 0 3 2 2 0 1 0 8 0 vnodes 216 2608 0 0 145 0 145 145 0 8 0 namei 1024 10174 0 10173 2 1 1 1 0 8 0 percpumem 16 76 0 30 1 0 1 1 0 8 0 vcpupl 3968 1 0 0 1 0 1 1 0 8 0 vmpool 840 1 0 0 1 0 1 1 0 8 0 kstatmem 264 54 0 34 3 1 2 3 0 8 0 scxspl 216 12394 0 12393 10 2 8 8 1 8 7 plimitpl 152 243 0 226 1 0 1 1 0 8 0 sigapl 424 824 0 778 7 1 6 7 0 8 0 knotepl 120 527 0 0 16 0 16 16 0 8 0 kqueuepl 224 207 0 197 3 2 1 3 0 8 0 pipepl 344 154 0 127 3 0 3 3 0 8 0 fdescpl 528 804 0 774 3 0 3 3 0 8 0 filepl 160 4562 0 4355 17 5 12 15 0 8 2 lockfpl 104 302 0 300 2 1 1 2 0 8 0 lockfspl 48 78 0 76 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 42 0 25 1 0 1 1 0 8 0 ucredpl 104 571 0 557 1 0 1 1 0 8 0 zombiepl 144 958 0 958 2 1 1 1 0 8 1 processpl 1232 824 0 778 5 0 5 5 0 8 0 procpl 664 1533 0 1476 6 0 6 6 0 8 0 sosppl 176 4 0 4 2 1 1 1 0 8 1 sockpl 752 1054 0 1022 19 9 10 14 0 8 6 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 27 0 0 4 0 4 4 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 563 0 0 36 0 36 36 0 8 0 bufpl 280 4524 0 139 314 0 314 314 0 8 0 anonpl 32 8548 0 0 69 0 69 69 0 246 0 amapchunkpl 152 22228 0 21768 40 11 29 32 0 158 10 amappl16 200 2712 0 2682 18 6 12 16 0 8 8 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 6 0 5 1 0 1 1 0 8 0 amappl13 176 425 0 423 1 0 1 1 0 8 0 amappl12 168 1169 0 1129 3 0 3 3 0 8 0 amappl11 160 12 0 11 1 0 1 1 0 8 0 amappl10 152 54 0 40 1 0 1 1 0 8 0 amappl9 144 257 0 257 1 1 0 1 0 8 0 amappl8 136 29 0 27 1 0 1 1 0 8 0 amappl7 128 91 0 90 1 0 1 1 0 8 0 amappl6 120 295 0 281 1 0 1 1 0 8 0 amappl5 112 76 0 66 1 0 1 1 0 8 0 amappl4 104 426 0 392 1 0 1 1 0 8 0 amappl3 96 3559 0 3472 4 1 3 3 0 8 0 amappl2 88 920 0 846 2 0 2 2 0 8 0 amappl1 80 10917 0 10319 15 1 14 15 0 8 0 amappl 88 5903 0 5747 5 0 5 5 0 92 1 uvmvnodes 80 110 0 0 3 0 3 3 0 8 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma16384 16384 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 128 253 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 78 0 1 2 0 2 2 0 8 0 uaddrrnd 24 804 0 774 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 804 0 774 1 0 1 1 0 8 0 vmmpekpl 168 8350 0 8295 3 0 3 3 0 8 0 vmmpepl 168 58169 0 56309 103 4 99 99 0 357 9 vmsppl 488 803 0 774 5 1 4 5 0 8 0 rwobjpl 80 18751 0 17643 29 0 29 29 0 8 2 pdppl 4096 1617 0 1549 103 31 72 87 0 8 4 pvpl 32 16047 0 0 130 0 130 130 0 265 0 pmappl 256 804 0 774 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 312 0 52 8 0 8 8 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: 0x795d83e90060, count: -1 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 x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:682 acpitimer_delay(1) at acpitimer_delay+0x76 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x76 sys/dev/acpi/acpitimer.c:120 comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(31) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(31) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83336be8) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833f8407) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002f3eae20,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002f3eae20) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:510 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b end trace frame: 0xffff80002f3eaf00, count: 0 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 x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:682 acpitimer_delay(1) at acpitimer_delay+0x76 acpitimer_read sys/dev/acpi/acpitimer.c:142 [inline] acpitimer_delay(1) at acpitimer_delay+0x76 sys/dev/acpi/acpitimer.c:120 comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1269 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(31) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(31) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1 db_printf(ffffffff83336be8) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833f8407) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002f3eae20,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002f3eae20) at kerntrap+0x19c sys/arch/amd64/amd64/trap.c:510 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000154a000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,81,2000,ffff800037bf7780) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff800037bf7780) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002f3eafd0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806baa6a28,81,fffffd80097fb1a0,ffff800037bf7780) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c25a518,ffff800037bf7780) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c25a518,ffff800037bf7780) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c25a518,ffff800037bf7780) at fdrop+0x121 sys/kern/kern_descrip.c:1280 sys_ioctl(ffff800037bf7780,ffff80002f3eb2e0,ffff80002f3eb230) at sys_ioctl+0x30b sys/kern/sys_generic.c:516 syscall(ffff80002f3eb2e0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002f3eb2e0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdeb7d673170, count: -23