*cpu0: uvm_fault(0xfffffd8076ff7030, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7b2aeeb11b00, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c429760 rbx 0 rdx 0 rcx 0xffff80003c458558 rax 0x2a r8 0xffff80003c429690 r9 0x1 r10 0x4a68d3f9caa5dfa r11 0xfee92885cda903e5 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff81feb4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c4296e0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=477531 pid=54022 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=0xffff80003c459cb0,0xffff8000fffefa18 process=0xffff800035c10ea0 user=0xffff80003c424000, vmspace=0xfffffd806aec09a0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *54022 477531 92302 0 7 0 syz-executor 54022 343706 92302 0 3 0x4000080 fsleep syz-executor 49691 266257 14580 0 2 0 syz-executor 49691 2028 14580 0 2 0x4000000 syz-executor 23253 291554 68110 0 2 0 syz-executor 23253 186085 68110 0 3 0x4000080 fsleep syz-executor 23253 179031 68110 0 3 0x4000080 bell syz-executor 85785 312751 68362 0 3 0x80 nanoslp syz-executor 85785 14405 68362 0 3 0x4000080 ttyretype syz-executor 85785 141913 68362 0 3 0x4000080 fsleep syz-executor 85785 491240 68362 0 3 0x4000080 fsleep syz-executor 14651 322874 18686 0 3 0x80 nanoslp syz-executor 14651 90281 18686 0 3 0x4000080 sbwait syz-executor 14651 252032 18686 0 3 0x4000080 fsleep syz-executor 70156 262531 1 0 3 0x100083 ttyin getty 14580 46561 19706 0 3 0x82 nanoslp syz-executor 32709 488856 0 0 3 0x14280 nfsidl nfsio 61033 89704 0 0 3 0x14280 nfsidl nfsio 23423 84328 0 0 3 0x14280 nfsidl nfsio 36969 291600 0 0 3 0x14280 nfsidl nfsio 27955 365916 19706 0 2 0x2 syz-executor 18686 376312 19706 0 3 0x82 nanoslp syz-executor 20363 368867 19706 0 3 0x82 nanoslp syz-executor 92302 506975 19706 0 3 0x82 nanoslp syz-executor 68110 207600 19706 0 3 0x82 nanoslp syz-executor 68362 311511 19706 0 3 0x82 nanoslp syz-executor 11015 259127 19706 0 3 0x82 nanoslp syz-executor 20349 113500 0 0 3 0x14200 bored sosplice 19706 246641 72504 0 3 0x82 kqread syz-executor 72504 157881 47368 0 3 0x10008a sigsusp ksh 47368 371678 92788 0 3 0x98 kqread sshd-session 92788 63356 53512 0 3 0x92 kqread sshd-session 53512 471778 1 0 3 0x88 kqread sshd 83718 396185 71256 74 3 0x1100092 bpf pflogd 71256 421366 1 0 3 0x80 sbwait pflogd 70841 110323 55356 73 3 0x1100090 kqread syslogd 55356 166609 1 0 3 0x100082 sbwait syslogd 44083 225644 1 0 3 0x100080 kqread resolvd 98568 294474 25281 77 3 0x100092 kqread dhcpleased 94205 330669 25281 77 3 0x100092 kqread dhcpleased 25281 100857 1 0 3 0x80 kqread dhcpleased 70083 476762 0 0 3 0x14200 bored smr 29418 427541 0 0 2 0x14200 zerothread 65701 421941 0 0 3 0x14200 aiodoned aiodoned 2736 218220 0 0 3 0x14200 syncer update 94145 281726 0 0 3 0x14200 cleaner cleaner 28843 219273 0 0 3 0x14200 reaper reaper 70521 138517 0 0 3 0x14200 pgdaemon pagedaemon 3059 281890 0 0 3 0x14200 bored viomb 1806 157209 0 0 3 0x40014200 acpi0 acpi0 99537 299425 0 0 3 0x40014200 idle1 78150 212048 0 0 3 0x14200 bored softnet1 45590 45277 0 0 3 0x14200 bored softnet0 25550 406185 0 0 3 0x14200 bored systqmp 18478 222348 0 0 3 0x14200 bored systq 41639 75955 0 0 3 0x14200 tmoslp softclockmp 96990 342213 0 0 3 0x40014200 tmoslp softclock 10539 255993 0 0 3 0x40014200 idle0 1 355426 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806ad5d710) #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_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 pmap_enter+0x24b rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #3 pmap_enter+0x24b pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_enter+0x24b sys/arch/amd64/amd64/pmap.c:2767 #4 uvm_fault_lower_lookup+0x3d6 sys/uvm/uvm_fault.c:-1 #5 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1370 #6 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #9 recall_trap+0x8 Process 54022 (syz-executor) thread 0xffff80003c458558 (477531) exclusive rwlock uobjlk r = 0 (0xfffffd806d6b0818) #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 uvm_fault_lower_lookup+0x53 sys/uvm/uvm_fault.c:1236 #3 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1370 #4 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806aec0aa0) #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: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:192 #6 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #7 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806ad5d710) #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_try+0x1ad sys/kern/kern_lock.c:311 #2 mtx_enter+0x62 sys/kern/kern_lock.c:261 #3 pmap_enter+0x24b rcr3 sys/arch/amd64/compile/SYZKALLER/obj/machine/cpufunc.h:139 [inline] #3 pmap_enter+0x24b pmap_map_ptes sys/arch/amd64/amd64/pmap.c:437 [inline] #3 pmap_enter+0x24b sys/arch/amd64/amd64/pmap.c:2767 #4 uvm_fault_lower_lookup+0x3d6 sys/uvm/uvm_fault.c:-1 #5 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1370 #6 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:603 #9 recall_trap+0x8 Process 27955 (syz-executor) thread 0xffff80003c459250 (365916) exclusive rrwlock inode r = 0 (0xfffffd800d1a27f8) #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+0xa3 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:746 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e036e80) #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+0xa3 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:746 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10269 11331K 12542K 166960K 22905 0 pcb 17 20K 36K 166960K 1635 0 rtable 253 16K 17K 166960K 1784 0 pf 39 18K 67486K 166960K 724 0 ifaddr 37 10K 12K 166960K 432 0 ifgroup 55 2K 3K 166960K 839 0 sysctl 4 1K 9K 166960K 129 0 counters 68 36K 38K 166960K 1014 0 ioctlops 0 0K 4K 166960K 3146 0 iov 1 12K 36K 166960K 787 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1481 93K 94K 166960K 8340 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 22 21K 21K 166960K 528 0 dirhash 12 2K 2K 166960K 141 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 7331 0 sigio 0 0K 0K 166960K 172 0 proc 74 115K 163K 166960K 1906 0 subproc 72 4K 4K 166960K 292 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 1239 0 in_multi 68 5K 7K 166960K 526 0 ether_multi 1 0K 0K 166960K 45 0 mrt 1 0K 0K 166960K 26 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 2127 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 79 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 246 164K 183K 166960K 65911 0 UVM aobj 56 4K 6K 166960K 60 0 pinsyscall 42 84K 100K 166960K 9077 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 430 0 NDP 12 0K 1K 166960K 344 0 temp 89 8652K 8908K 166960K 386364 0 kqueue 17 22K 34K 166960K 1435 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 120 724 0 721 6 5 1 3 0 8 0 rtentry 176 548 0 457 5 0 5 5 0 8 0 unpcb 144 5924 0 5905 47 45 2 6 0 8 1 syncache 336 22 0 22 11 11 0 1 0 8 0 tcpqe 32 8 0 8 5 5 0 1 0 8 0 tcpcb 736 3061 0 3055 55 51 4 7 0 8 3 arp 136 75 0 53 1 0 1 1 0 8 0 inpcb 328 8813 0 8802 85 78 7 13 0 8 5 nd6 144 89 0 71 1 0 1 1 0 8 0 pkpcb 40 90 0 90 15 14 1 1 0 8 1 kcovpl 48 32 0 24 1 0 1 1 0 8 0 mppekey 1024 6 0 6 6 6 0 1 0 8 0 ppxss 1192 375 0 375 6 5 1 1 0 8 1 pppxif 1504 29 0 29 9 8 1 1 0 8 1 pfstscr 40 39 0 37 1 0 1 1 0 8 0 pffrag 232 90 0 74 2 0 2 2 0 482 0 pffrnode 88 79 0 64 1 0 1 1 0 8 0 pffrent 40 319 0 302 1 0 1 1 0 8 0 pfosfp 40 1429 0 1429 5 5 0 5 0 8 0 pfosfpen 112 1429 0 1429 21 21 0 21 0 8 0 pfrktable 1344 6 0 6 5 5 0 1 0 8 0 pfanchor 1288 2 0 2 1 1 0 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstitem 24 392 0 261 1 0 1 1 0 8 0 pfstkey 128 466 0 336 5 0 5 5 0 8 0 pfstate 384 426 0 297 14 1 13 13 0 8 0 pfrule 1344 37 0 31 2 1 1 2 0 8 0 rttmr 136 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 1879 0 1540 44 22 22 28 0 8 0 art_table 40 1883 0 1540 6 2 4 5 0 8 0 art_node 32 471 0 399 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 518 0 498 1 0 1 1 0 8 0 shmpl 112 57 0 4 2 0 2 2 0 8 0 dirhash 1024 106 0 89 3 0 3 3 0 8 0 dino2pl 256 15559 0 13993 99 0 99 99 0 8 0 ffsino 296 15559 0 13993 122 0 122 122 0 8 0 nchpl 144 25529 0 23778 66 0 66 66 0 8 0 rtmask 32 42 0 42 10 10 0 1 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 93969 0 93968 5 4 1 2 0 8 0 percpumem 16 522 0 473 1 0 1 1 0 8 0 kstatmem 264 564 0 536 6 3 3 3 0 8 0 acpiwqpl 32 6 0 6 1 0 1 1 1 8 1 scsiplug 72 41 0 41 15 14 1 1 0 8 1 scxspl 216 185938 0 185938 38 33 5 8 1 8 5 plimitpl 152 2168 0 2149 1 0 1 1 0 8 0 sigapl 424 7579 0 7527 8 1 7 7 0 8 0 knotepl 120 938 0 0 24 0 24 24 0 8 0 kqueuepl 224 3695 0 3680 42 40 2 9 0 8 1 pipepl 344 1272 0 1243 28 19 9 9 0 8 6 fdescpl 528 7525 0 7494 3 0 3 3 0 8 0 filepl 160 58446 0 58214 89 72 17 28 0 8 3 lockfpl 104 3218 0 3216 5 4 1 3 0 8 0 lockfspl 48 1307 0 1305 1 0 1 1 0 8 0 sessionpl 144 68 0 59 1 0 1 1 0 8 0 pgrppl 48 227 0 210 1 0 1 1 0 8 0 ucredpl 104 10451 0 10437 1 0 1 1 0 8 0 zombiepl 144 8150 0 8148 2 1 1 1 0 8 0 processpl 1232 7579 0 7527 7 2 5 5 0 8 0 procpl 664 19426 0 19365 8 2 6 7 0 8 0 sosppl 168 50 0 50 15 14 1 1 0 8 1 sockpl 752 16000 0 15967 176 165 11 31 0 8 6 mcl64k 65536 15 0 0 2 0 2 2 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 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 116 0 0 15 1 14 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 122 0 0 9 0 9 9 0 8 0 mtagpl 96 72 0 0 2 0 2 2 0 8 0 mbufpl 256 566 0 0 24 0 24 24 0 8 0 bufpl 280 76806 0 70663 440 0 440 440 0 8 0 anonpl 32 15287 0 0 124 1 123 123 0 246 0 amapchunkpl 152 234804 0 234251 112 78 34 36 0 158 5 amappl16 200 26005 0 25969 150 134 16 35 0 8 4 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 232 0 220 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 8573 0 8542 4 2 2 3 0 8 0 amappl11 160 152 0 138 1 0 1 1 0 8 0 amappl10 152 14 0 14 1 1 0 1 0 8 0 amappl9 144 254 0 252 1 0 1 1 0 8 0 amappl8 136 22 0 19 1 0 1 1 0 8 0 amappl7 128 184 0 172 1 0 1 1 0 8 0 amappl6 120 438 0 434 1 0 1 1 0 8 0 amappl5 112 228 0 218 1 0 1 1 0 8 0 amappl4 104 402 0 383 1 0 1 1 0 8 0 amappl3 96 41877 0 41777 5 1 4 4 0 8 0 amappl2 88 7949 0 7865 3 0 3 3 0 8 0 amappl1 80 43330 0 42726 15 0 15 15 0 8 0 amappl 88 63582 0 63409 5 0 5 5 0 92 0 dma32768 32768 2 0 2 2 2 0 1 0 8 0 dma16384 16384 2 0 2 2 2 0 1 0 8 0 dma8192 8192 2 0 2 2 1 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 8 0 8 2 2 0 1 0 8 0 dma128 128 260 0 260 7 7 0 1 0 8 0 dma64 64 9 0 9 4 4 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 22 0 21 1 0 1 1 0 8 0 aobjpl 72 59 0 4 1 0 1 1 0 8 0 uaddrrnd 24 7525 0 7494 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7525 0 7494 1 0 1 1 0 8 0 vmmpekpl 168 53658 0 53586 5 1 4 4 0 8 0 vmmpepl 168 471814 0 469718 167 61 106 119 0 357 0 vmsppl 488 7524 0 7494 7 2 5 5 0 8 0 rwobjpl 80 122151 0 115212 164 15 149 155 0 8 0 pdppl 4096 15058 0 14988 158 86 72 84 0 8 2 pvpl 32 23632 0 0 188 0 188 188 0 265 0 pmappl 256 7524 0 7494 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 451 0 190 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837c9ff0) 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(3f8,0,20) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:782 comcnputc(800,20) at comcnputc+0x1ab bus_space_barrier sys/dev/ic/com.c:-1 [inline] comcnputc(800,20) at comcnputc+0x1ab sys/dev/ic/com.c:1263 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(65) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29a5 sys/kern/subr_prf.c:-1 db_printf(ffffffff8331333c) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833d8cc2) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002a3364e0,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002a3364e0) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:489 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800010fdd000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 end trace frame: 0xffff80002a336610, count: 0 ddb{0}> trace x86_ipi_db(ffffffff837c9ff0) 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(3f8,0,20) at x86_bus_space_io_write_1+0x40 sys/arch/amd64/amd64/bus_space.c:782 comcnputc(800,20) at comcnputc+0x1ab bus_space_barrier sys/dev/ic/com.c:-1 [inline] comcnputc(800,20) at comcnputc+0x1ab sys/dev/ic/com.c:1263 cnputc(20) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline] db_putchar(65) at db_putchar+0x126 sys/ddb/db_output.c:153 kprintf() at kprintf+0x29a5 sys/kern/subr_prf.c:-1 db_printf(ffffffff8331333c) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833d8cc2) at fault+0xa7 sys/arch/amd64/amd64/trap.c:161 kpageflttrap(ffff80002a3364e0,0) at kpageflttrap+0x37d sys/arch/amd64/amd64/trap.c:296 kerntrap(ffff80002a3364e0) at kerntrap+0x198 sys/arch/amd64/amd64/trap.c:489 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800010fdd000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff8000fffee2b0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff8000fffee2b0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a336690) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805d2c8708,81,fffffd80097fb5b0,ffff8000fffee2b0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805dd27240,ffff8000fffee2b0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805dd27240,ffff8000fffee2b0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805dd27240,ffff8000fffee2b0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805dd27240,ffff8000fffee2b0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffee2b0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffee2b0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffee2b0,ffff80002a336a00,ffff80002a336950) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a336a00) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a336a00) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x711283932d10, count: -25 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: 0x7b2aeeb11b00, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7b2aeeb11b00, count: -1