*cpu1: uvm_fault(0xfffffd806c98f9a8, 0x0, 0, 1) -> e ddb{0}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7c5c73a247d0, count: -1 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800037be93f0 rbx 0 rdx 0 rcx 0xffff80003a3f8d18 rax 0x2a r8 0xffff800037be9320 r9 0x4 r10 0x4d11ed8ce9ee1194 r11 0x4a4bf9a6a101f928 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff827da4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff800037be9370 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{0}> show proc PROC (syz-executor) tid=186159 pid=85123 tcnt=1 stat=onproc flags process=40 proc=0 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003a3f8020,0xffffffff839a70a8 process=0xffff80002a3bc4e8 user=0xffff800037be4000, vmspace=0xfffffd806c98f7c0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *85123 186159 18876 0 7 0x40 syz-executor 41056 5531 61516 0 2 0 syz-executor 41056 360511 61516 0 3 0x4000080 fsleep syz-executor 25721 374146 90659 0 2 0 syz-executor 25721 379032 90659 0 3 0x4000080 ttyout syz-executor 56073 214378 35076 0 2 0 syz-executor 56073 121993 35076 0 3 0x4000080 fsleep syz-executor 25176 49052 51804 0 3 0x80 nanoslp syz-executor 25176 404089 51804 0 3 0x4000080 kqread syz-executor 25176 193060 51804 0 3 0x4000080 fsleep syz-executor 25176 453561 51804 0 3 0x4000080 fsleep syz-executor 18876 5865 79461 0 3 0x82 ppwait syz-executor 74883 3884 56098 0 3 0x100082 sbwait ndp 56098 358366 5312 0 3 0x10008a sigsusp sh 5312 459655 79461 0 3 0x82 wait syz-executor 35076 427657 79461 0 3 0x82 nanoslp syz-executor 78121 412522 79461 0 3 0x82 nanoslp syz-executor 71883 268699 79461 0 3 0x2 biowait syz-executor 90659 162242 79461 0 3 0x82 nanoslp syz-executor 61516 429178 79461 0 3 0x82 nanoslp syz-executor 51804 517043 79461 0 3 0x82 nanoslp syz-executor 79461 362168 26873 0 3 0x82 kqread syz-executor 26873 225085 12975 0 3 0x10008a sigsusp ksh 12975 214435 76564 0 3 0x98 kqread sshd-session 76564 227279 52399 0 3 0x92 kqread sshd-session 8427 240870 1 0 3 0x100083 ttyin getty 52399 131186 1 0 3 0x88 kqread sshd 1992 503575 89612 74 3 0x1100092 bpf pflogd 89612 242928 1 0 3 0x80 sbwait pflogd 520 45144 41961 73 3 0x1100090 kqread syslogd 41961 250982 1 0 3 0x100082 sbwait syslogd 4704 407340 1 0 3 0x100080 kqread resolvd 93535 85475 95697 77 3 0x100092 kqread dhcpleased 49902 382683 95697 77 3 0x100092 kqread dhcpleased 95697 10975 1 0 3 0x80 kqread dhcpleased 29368 393097 0 0 3 0x14200 bored smr 63403 322124 0 0 2 0x14200 zerothread 56466 271825 0 0 3 0x14200 aiodoned aiodoned 63080 435426 0 0 3 0x14200 syncer update 49609 66539 0 0 3 0x14200 cleaner cleaner 63884 24876 0 0 3 0x14200 reaper reaper 2587 131013 0 0 3 0x14200 pgdaemon pagedaemon 42571 368030 0 0 3 0x14200 bored viomb 79677 482068 0 0 3 0x40014200 acpi0 acpi0 7712 403552 0 0 3 0x40014200 idle1 83671 132536 0 0 3 0x14200 bored softnet1 49074 517539 0 0 3 0x14200 bored softnet0 24946 38743 0 0 3 0x14200 smrbar systqmp 29805 284913 0 0 3 0x14200 bored systq 82610 85774 0 0 3 0x14200 tmoslp softclockmp 82015 329945 0 0 3 0x40014200 tmoslp softclock 88573 378923 0 0 3 0x40014200 idle0 1 487744 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex &(curpg)->mdpage.pv_mtx r = 0 (0xfffffd800896e918) #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+0x86c pmap_enter_pv sys/arch/amd64/amd64/pmap.c:1094 [inline] #3 pmap_enter+0x86c sys/arch/amd64/amd64/pmap.c:2878 #4 uvm_fault_lower_lookup+0x3d6 sys/uvm/uvm_fault.c:-1 #5 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1348 #6 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #9 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806c98e810) #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:1348 #6 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #9 recall_trap+0x8 Process 85123 (syz-executor) thread 0xffff80003a3f8d18 (186159) shared rwlock uobjlk r = 0 (0xfffffd806e2f38a8) #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 uvm_fault_lower_lookup+0x53 sys/uvm/uvm_fault.c:1214 #3 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1348 #4 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806c98f8c0) #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:632 #7 recall_trap+0x8 exclusive mutex &(curpg)->mdpage.pv_mtx r = 0 (0xfffffd800896e918) #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+0x86c pmap_enter_pv sys/arch/amd64/amd64/pmap.c:1094 [inline] #3 pmap_enter+0x86c sys/arch/amd64/amd64/pmap.c:2878 #4 uvm_fault_lower_lookup+0x3d6 sys/uvm/uvm_fault.c:-1 #5 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1348 #6 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #9 recall_trap+0x8 exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd806c98e810) #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:1348 #6 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #7 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #8 usertrap+0x42f sys/arch/amd64/amd64/trap.c:632 #9 recall_trap+0x8 Process 71883 (syz-executor) thread 0xffff8000ffffd230 (268699) exclusive rrwlock inode r = 0 (0xfffffd806c820c70) #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 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ce8d698) #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 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 24946 (systqmp) thread 0xffff8000ffffe7c8 (38743) shared rwlock systqmp r = 0 (0xffffffff8388df68) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10215 11088K 11337K 166960K 11706 0 pcb 18 12K 12K 166960K 56 0 rtable 223 8K 10K 166960K 439 0 pf 35 17K 18K 166960K 65 0 ifaddr 44 7K 7K 166960K 62 0 ifgroup 55 2K 2K 166960K 84 0 sysctl 3 1K 9K 166960K 8 0 counters 70 37K 37K 166960K 98 0 ioctlops 0 0K 4K 166960K 1557 0 iov 0 0K 12K 166960K 17 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1342 84K 85K 166960K 1613 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 10 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 418 0 sigio 1 0K 0K 166960K 6 0 proc 72 115K 164K 166960K 569 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 18 0 in_multi 93 6K 7K 166960K 116 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 442 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 236 161K 176K 166960K 5689 0 UVM aobj 12 4K 6K 166960K 13 0 pinsyscall 44 88K 106K 166960K 1559 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 12 0 NDP 12 0K 1K 166960K 37 0 temp 59 8671K 8737K 166960K 15582 0 kqueue 14 22K 26K 166960K 71 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 120 126 0 122 3 0 3 3 0 8 2 rtentry 176 124 0 30 6 0 6 6 0 8 0 unpcb 144 460 0 439 10 5 5 6 0 8 4 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpcb 736 55 0 51 1 0 1 1 0 8 0 arp 136 19 0 2 1 0 1 1 0 8 0 inpcb 328 314 0 306 8 1 7 7 0 8 5 nd6 152 25 0 4 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 9 0 9 1 0 1 1 0 8 1 pppxif 1504 3 0 3 1 0 1 1 0 8 1 pffrag 232 4 0 0 1 0 1 1 0 482 0 pffrnode 88 4 0 0 1 0 1 1 0 8 0 pffrent 40 72 0 68 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 28 0 1 1 0 1 1 0 8 0 pfstkey 128 29 0 2 1 0 1 1 0 8 0 pfstate 448 29 0 2 4 0 4 4 0 8 0 pfrule 1344 23 0 18 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 518 0 62 29 0 29 29 0 8 0 art_table 40 521 0 62 5 0 5 5 0 8 0 art_node 32 123 0 26 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 6 1 0 1 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 8 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2123 0 611 96 1 95 96 0 8 0 ffsino 296 2123 0 611 118 0 118 118 0 8 0 nchpl 144 2694 0 994 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 2314 0 0 129 0 129 129 0 8 0 namei 1024 8690 0 8690 3 2 1 2 0 8 1 percpumem 16 64 0 14 1 0 1 1 0 8 0 vcpupl 3968 1 0 0 1 0 1 1 0 8 0 vmpool 840 2 0 1 1 0 1 1 0 8 0 kstatmem 264 42 0 16 3 0 3 3 0 8 1 scxspl 216 8860 0 8859 3 2 1 2 1 8 0 plimitpl 152 162 0 145 1 0 1 1 0 8 0 sigapl 424 725 0 677 7 1 6 7 0 8 0 knotepl 120 533 0 0 17 0 17 17 0 8 0 kqueuepl 224 169 0 159 5 0 5 5 0 8 4 pipepl 344 153 0 125 3 0 3 3 0 8 0 fdescpl 528 709 0 677 3 0 3 3 0 8 0 filepl 160 3835 0 3613 21 5 16 16 0 8 3 lockfpl 104 84 0 81 1 0 1 1 0 8 0 lockfspl 48 40 0 37 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 36 0 19 1 0 1 1 0 8 0 ucredpl 104 530 0 517 1 0 1 1 0 8 0 zombiepl 144 678 0 677 2 1 1 1 0 8 0 processpl 1232 725 0 677 5 0 5 5 0 8 0 procpl 664 1221 0 1167 6 0 6 6 0 8 0 sockpl 752 910 0 877 26 15 11 17 0 8 6 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 133 0 0 17 0 17 17 0 8 0 mcl2k 2048 35 0 0 5 0 5 5 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 274 0 0 17 0 17 17 0 8 0 bufpl 280 3227 0 132 222 0 222 222 0 8 0 anonpl 32 5810 0 0 47 0 47 47 0 246 0 amapchunkpl 152 17936 0 17492 29 0 29 29 0 158 9 amappl16 200 2404 0 2379 7 3 4 5 0 8 2 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 6 0 6 1 1 0 1 0 8 0 amappl13 176 435 0 433 1 0 1 1 0 8 0 amappl12 168 1100 0 1056 3 0 3 3 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 51 0 36 1 0 1 1 0 8 0 amappl9 144 274 0 273 1 0 1 1 0 8 0 amappl8 136 26 0 24 1 0 1 1 0 8 0 amappl7 128 109 0 108 1 0 1 1 0 8 0 amappl6 120 295 0 280 1 0 1 1 0 8 0 amappl5 112 83 0 73 1 0 1 1 0 8 0 amappl4 104 421 0 390 1 0 1 1 0 8 0 amappl3 96 3284 0 3184 5 1 4 4 0 8 0 amappl2 88 538 0 476 2 0 2 2 0 8 0 amappl1 80 10418 0 9809 15 0 15 15 0 8 0 amappl 88 4913 0 4760 5 0 5 5 0 92 0 uvmvnodes 80 108 0 0 3 0 3 3 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 6 0 6 1 1 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 12 0 1 1 0 1 1 0 8 0 uaddrrnd 24 709 0 677 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 709 0 677 1 0 1 1 0 8 0 vmmpekpl 168 7559 0 7520 2 0 2 2 0 8 0 vmmpepl 168 52349 0 50433 93 0 93 93 0 357 5 vmsppl 488 708 0 677 5 0 5 5 0 8 0 rwobjpl 80 17187 0 16125 26 1 25 25 0 8 1 pdppl 4096 1430 0 1357 103 26 77 86 0 8 4 pvpl 32 13571 0 0 112 2 110 110 0 265 0 pmappl 256 710 0 678 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 291 0 32 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: 0x7c5c73a247d0, 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:790 comcnputc(800,65) at comcnputc+0x1ab bus_space_barrier sys/dev/ic/com.c:-1 [inline] comcnputc(800,65) at comcnputc+0x1ab sys/dev/ic/com.c:1263 cnputc(65) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x203 sys/kern/subr_prf.c:723 db_printf(ffffffff83436f95) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff80002f3cacf0) at db_ktrap+0xe3 db_printtrap sys/arch/amd64/amd64/db_interface.c:99 [inline] db_ktrap(6,0,ffff80002f3cacf0) at db_ktrap+0xe3 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff80002f3cacf0) at kerntrap+0x242 sys/arch/amd64/amd64/trap.c:511 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001483000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,1,2000,ffff80003a3f34e8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff80003a3f34e8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 end trace frame: 0xffff80002f3cae90, 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:790 comcnputc(800,65) at comcnputc+0x1ab bus_space_barrier sys/dev/ic/com.c:-1 [inline] comcnputc(800,65) at comcnputc+0x1ab sys/dev/ic/com.c:1263 cnputc(65) at cnputc+0x67 sys/dev/cons.c:218 db_putchar(65) at db_putchar+0x36d sys/ddb/db_output.c:155 kprintf() at kprintf+0x203 sys/kern/subr_prf.c:723 db_printf(ffffffff83436f95) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff80002f3cacf0) at db_ktrap+0xe3 db_printtrap sys/arch/amd64/amd64/db_interface.c:99 [inline] db_ktrap(6,0,ffff80002f3cacf0) at db_ktrap+0xe3 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff80002f3cacf0) at kerntrap+0x242 sys/arch/amd64/amd64/trap.c:511 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001483000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,1,2000,ffff80003a3f34e8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff80003a3f34e8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002f3caea0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd800d6cb208,1,fffffd80097fd6e8,ffff80003a3f34e8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806751b6d0,ffff80003a3f34e8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806751b6d0,ffff80003a3f34e8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806751b6d0,ffff80003a3f34e8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806751b6d0,ffff80003a3f34e8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003a3f34e8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003a3f34e8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003a3f34e8,ffff80002f3cb210,ffff80002f3cb160) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002f3cb210) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002f3cb210) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74562cbf9270, count: -24