*cpu0: uvm_fault(0xffffffff83a17cf0, 0xffff8000015b202a, 0, 1) -> e ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x712fa0921bd0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c445da0 rbx 0 rdx 0 rcx 0xffff80002ebe5750 rax 0x3d r8 0xffff80003c445cd0 r9 0xffff80003c445998 r10 0x5c1d0b3b7ec8cda3 r11 0xcbf914d465fd609d r12 0 r13 0 r14 0xffff80002ebe5750 r15 0 rip 0xffffffff8193a3ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80003c445d20 ss 0 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=206366 pid=66841 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002ebe4040,0xffff80002a296d00 process=0xffff80003c4ba6e8 user=0xffff80003c440000, vmspace=0xfffffd806a444d38 estcpu=36, cpticks=4, pctcpu=0.53, user=2, sys=126, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67732 105754 57575 0 2 0 syz-executor 67732 179697 57575 0 7 0x4000000 syz-executor 67732 21321 57575 0 3 0x4000080 fsleep syz-executor 68351 505031 86033 0 3 0x80 nanoslp syz-executor 68351 344431 86033 0 3 0x4000080 fsleep syz-executor 68351 60441 86033 0 3 0x4000080 lockf syz-executor 68351 329933 86033 0 3 0x4000080 fsleep syz-executor 12721 303730 10922 0 3 0x80 nanoslp syz-executor 12721 147154 10922 0 3 0x4000080 kqsel syz-executor 12721 333044 10922 0 3 0x4000080 fsleep syz-executor 12721 200206 10922 0 3 0x4000080 fsleep syz-executor 3063 120045 1 0 3 0x100083 ttyin getty 42115 408982 30415 0 3 0x82 nanoslp syz-executor 57575 194071 30415 0 2 0xc82 syz-executor 5801 507494 0 0 3 0x14200 acct acct 86033 287704 30415 0 2 0xc82 syz-executor *66841 206366 30415 0 7 0x2 syz-executor 10922 312453 30415 0 3 0x82 nanoslp syz-executor 36690 28355 0 0 3 0x14200 bored sosplice 59722 283728 4779 0 3 0x100082 sbwait arp 4779 194382 1 0 3 0x10008a sigsusp sh 9679 316857 30415 0 3 0x82 nanoslp syz-executor 25573 194222 30415 0 2 0xc82 syz-executor 61082 347910 30415 0 3 0x82 wait syz-executor 30415 267651 73563 0 3 0x82 kqread syz-executor 73563 14561 69795 0 3 0x10008a sigsusp ksh 69795 452331 26292 0 3 0x98 kqread sshd-session 26292 260302 11808 0 3 0x92 kqread sshd-session 11808 476075 1 0 3 0x88 kqread sshd 6165 497893 51044 74 3 0x1100092 bpf pflogd 51044 452008 1 0 3 0x80 sbwait pflogd 26571 16605 55830 73 3 0x1100090 kqread syslogd 55830 112190 1 0 3 0x100082 sbwait syslogd 90740 39136 1 0 3 0x100080 kqread resolvd 52595 92275 2585 77 3 0x100092 kqread dhcpleased 36323 242337 2585 77 3 0x100092 kqread dhcpleased 2585 268911 1 0 3 0x80 kqread dhcpleased 92259 454691 0 0 3 0x14200 bored smr 88591 493829 0 0 3 0x14200 pgzero zerothread 88685 65171 0 0 3 0x14200 aiodoned aiodoned 36972 300929 0 0 3 0x14200 syncer update 78718 360037 0 0 3 0x14200 cleaner cleaner 62527 322157 0 0 3 0x14200 reaper reaper 53020 368272 0 0 3 0x14200 pgdaemon pagedaemon 20885 461141 0 0 3 0x14200 bored viomb 43168 214292 0 0 3 0x40014200 acpi0 acpi0 42129 31660 0 0 3 0x40014200 idle1 18727 375461 0 0 3 0x14200 bored softnet3 63951 171219 0 0 3 0x14200 bored softnet2 50028 64660 0 0 3 0x14200 bored softnet1 14496 315084 0 0 3 0x14200 bored softnet0 59286 460772 0 0 3 0x14200 bored systqmp 41485 446286 0 0 3 0x14200 bored systq 88339 471261 0 0 3 0x14200 tmoslp softclockmp 83713 494810 0 0 2 0x40014200 softclock 89908 145722 0 0 3 0x40014200 idle0 1 256732 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &iopl->mtx r = 0 (0xffff8000000a3488) #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+0x1ad sys/kern/kern_lock.c:298 #2 mtx_enter+0x62 sys/kern/kern_lock.c:255 #3 scsi_xsh_add+0x69 sys/scsi/scsi_base.c:527 #4 sdstrategy+0x21b sys/scsi/sd.c:567 #5 spec_strategy+0x45 sys/kern/spec_vnops.c:448 #6 VOP_STRATEGY+0xcc sys/kern/vfs_vops.c:639 #7 bwrite+0x296 sys/kern/vfs_bio.c:745 #8 ffs_update+0x34f sys/ufs/ffs/ffs_inode.c:111 #9 ffs_truncate+0xcb6 sys/ufs/ffs/ffs_inode.c:-1 #10 ufs_rmdir+0x377 sys/ufs/ufs/ufs_vnops.c:1265 #11 VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413 #12 dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1897 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #14 Xsyscall+0x128 Process 67732 (syz-executor) thread 0xffff80002a2962b0 (179697) exclusive rwlock netlock r = 0 (0xffffffff837ece60) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rtm_output+0x78c sys/net/rtsock.c:969 #3 route_output+0x9a1 sys/net/rtsock.c:878 #4 route_send+0xd7 sys/net/rtsock.c:342 #5 sosend+0x804 sys/kern/uipc_socket.c:-1 #6 sendit+0x721 sys/kern/uipc_syscalls.c:779 #7 sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 #8 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 exclusive rwlock sbufsnd r = 0 (0xffff8000015995c0) #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+0x377 sys/kern/kern_rwlock.c:310 #2 sblock+0xb7 sys/kern/uipc_socket2.c:536 #3 sosend+0x2e2 sys/kern/uipc_socket.c:630 #4 sendit+0x721 sys/kern/uipc_syscalls.c:779 #5 sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #7 Xsyscall+0x128 Process 66841 (syz-executor) thread 0xffff80002ebe5750 (206366) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839ee878) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2da sys/kern/kern_synch.c:366 #3 biowait+0xc1 sys/kern/vfs_bio.c:1242 #4 bwrite+0x2e5 sys/kern/vfs_bio.c:754 #5 ufs_dirremove+0x2ac sys/ufs/ufs/ufs_lookup.c:919 #6 ufs_rmdir+0x287 sys/ufs/ufs/ufs_vnops.c:1248 #7 VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413 #8 dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1897 #9 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e0b7788) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:693 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c8cec20) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #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 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #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 exclusive mutex &iopl->mtx r = 0 (0xffff8000000a3488) #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+0x1ad sys/kern/kern_lock.c:298 #2 mtx_enter+0x62 sys/kern/kern_lock.c:255 #3 scsi_xsh_add+0x69 sys/scsi/scsi_base.c:527 #4 sdstrategy+0x21b sys/scsi/sd.c:567 #5 spec_strategy+0x45 sys/kern/spec_vnops.c:448 #6 VOP_STRATEGY+0xcc sys/kern/vfs_vops.c:639 #7 bwrite+0x296 sys/kern/vfs_bio.c:745 #8 ffs_update+0x34f sys/ufs/ffs/ffs_inode.c:111 #9 ffs_truncate+0xcb6 sys/ufs/ffs/ffs_inode.c:-1 #10 ufs_rmdir+0x377 sys/ufs/ufs/ufs_vnops.c:1265 #11 VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413 #12 dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1897 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #14 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10254 11203K 11427K 166960K 13017 0 pcb 18 14K 16K 166960K 430 0 rtable 210 12K 13K 166960K 711 0 pf 34 17K 67485K 166960K 158 0 ifaddr 38 6K 8K 166960K 121 0 ifgroup 55 2K 2K 166960K 189 0 sysctl 4 1K 9K 166960K 17 0 counters 68 36K 37K 166960K 226 0 ioctlops 0 0K 4K 166960K 1687 0 iov 0 0K 30K 166960K 126 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1468 92K 93K 166960K 2782 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 37 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 160 0 dirhash 12 2K 2K 166960K 48 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 110K 166960K 1702 0 sigio 0 0K 0K 166960K 38 0 proc 72 91K 128K 166960K 873 0 subproc 81 5K 5K 166960K 126 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 382 0 in_multi 83 5K 7K 166960K 208 0 ether_multi 1 0K 0K 166960K 3 0 mrt 1 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 649 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 7 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 276 183K 191K 166960K 17756 0 UVM aobj 42 2K 2K 166960K 46 0 pinsyscall 45 90K 114K 166960K 2937 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 85 0 NDP 12 0K 1K 166960K 87 0 temp 79 8696K 8823K 166960K 85200 0 kqueue 13 20K 30K 166960K 329 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 120 194 0 189 3 2 1 3 0 8 0 rtentry 176 198 0 115 5 0 5 5 0 8 0 unpcb 144 1387 0 1368 10 9 1 6 0 8 0 syncache 336 10 0 10 3 3 0 1 0 8 0 tcpqe 32 3 0 3 2 2 0 1 0 8 0 tcpcb 736 534 0 526 15 13 2 7 0 8 1 arp 128 32 0 18 1 0 1 1 0 8 0 inpcb 328 1674 0 1658 23 16 7 10 0 8 5 nd6 144 47 0 25 2 0 2 2 0 8 0 pkpcb 40 87 0 87 3 3 0 1 0 8 0 kcovpl 48 14 0 5 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 1 1 1 0 8 1 ppxss 1192 62 0 62 4 3 1 1 0 8 1 pppxif 1504 1 0 1 1 1 0 1 0 8 0 pffrag 232 15 0 6 1 0 1 1 0 482 0 pffrnode 88 12 0 4 1 0 1 1 0 8 0 pffrent 40 22 0 12 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 24 110 0 52 1 0 1 1 0 8 0 pfstkey 128 110 0 52 3 0 3 3 0 8 0 pfstate 384 110 0 52 7 0 7 7 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 3 0 3 3 3 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 990 0 607 38 7 31 32 0 8 4 art_table 32 991 0 607 5 1 4 5 0 8 0 art_node 16 197 0 126 1 0 1 1 0 8 0 sysvmsgpl 40 35 0 25 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 154 0 144 1 0 1 1 0 8 0 shmpl 112 43 0 4 2 0 2 2 0 8 0 dirhash 1024 41 0 24 3 0 3 3 0 8 0 dino2pl 256 4453 0 2936 96 0 96 96 0 8 0 ffsino 288 4453 0 2936 109 0 109 109 0 8 0 nchpl 144 6691 0 4983 64 0 64 64 0 8 0 rtmask 32 18 0 18 3 3 0 1 0 8 0 uvmvnodes 80 5316 0 0 109 0 109 109 0 8 0 vnodes 216 5316 0 0 296 0 296 296 0 8 0 namei 1024 24382 0 24382 3 2 1 2 0 8 1 percpumem 16 128 0 79 1 0 1 1 0 8 0 kstatmem 264 124 0 96 6 3 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 5 0 5 2 1 1 1 0 8 1 scxspl 216 24429 0 24429 16 15 1 8 1 8 1 plimitpl 152 344 0 326 1 0 1 1 0 8 0 sigapl 424 2003 0 1950 9 1 8 9 0 8 0 knotepl 120 559 0 0 17 0 17 17 0 8 0 kqueuepl 224 812 0 801 14 12 2 5 0 8 1 pipepl 336 309 0 279 8 5 3 8 0 8 0 fdescpl 520 1961 0 1928 3 0 3 3 0 8 0 filepl 160 13722 0 13478 25 10 15 18 0 8 3 lockfpl 104 708 0 704 2 0 2 2 0 8 1 lockfspl 48 235 0 232 1 0 1 1 0 8 0 sessionpl 144 33 0 24 1 0 1 1 0 8 0 pgrppl 48 67 0 49 1 0 1 1 0 8 0 ucredpl 104 1947 0 1931 1 0 1 1 0 8 0 zombiepl 144 2891 0 2887 2 1 1 1 0 8 0 processpl 1240 2003 0 1950 6 0 6 6 0 8 0 procpl 656 4714 0 4653 9 2 7 8 0 8 0 srpgc 96 16 0 16 5 4 1 1 0 8 1 sosppl 168 15 0 15 4 4 0 1 0 8 0 sockpl 728 3384 0 3344 40 30 10 16 0 8 6 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 54 0 0 6 0 6 6 0 8 0 mtagpl 96 14 0 0 1 0 1 1 0 8 0 mbufpl 256 358 0 0 20 0 20 20 0 8 0 bufpl 280 7642 0 1500 440 0 440 440 0 8 0 anonpl 32 10638 0 0 86 0 86 86 0 246 0 amapchunkpl 152 58732 0 58116 45 14 31 32 0 158 2 amappl16 200 5136 0 5099 49 39 10 22 0 8 2 amappl15 192 5 0 5 2 2 0 1 0 8 0 amappl14 184 131 0 118 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 2757 0 2723 4 1 3 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 4 0 3 1 0 1 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 24 0 20 1 0 1 1 0 8 0 amappl7 128 146 0 132 1 0 1 1 0 8 0 amappl6 120 260 0 254 1 0 1 1 0 8 0 amappl5 112 148 0 137 1 0 1 1 0 8 0 amappl4 104 350 0 328 1 0 1 1 0 8 0 amappl3 96 11819 0 11695 4 0 4 4 0 8 0 amappl2 88 768 0 701 2 0 2 2 0 8 0 amappl1 80 15684 0 15043 16 1 15 16 0 8 0 amappl 88 16696 0 16500 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 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 3 2 1 1 0 8 1 dma64 64 8 0 8 3 2 1 1 0 8 1 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 45 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1961 0 1928 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1961 0 1928 1 0 1 1 0 8 0 vmmpekpl 168 17125 0 17065 4 1 3 4 0 8 0 vmmpepl 168 127201 0 125072 119 18 101 104 0 357 2 vmsppl 480 1960 0 1928 5 0 5 5 0 8 0 rwobjpl 72 39215 0 32828 117 0 117 117 0 8 0 pdppl 4096 3929 0 3856 123 48 75 87 0 8 2 pvpl 32 18144 0 0 148 1 147 147 0 265 0 pmappl 256 1960 0 1928 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 451 0 81 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff838baff0) 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_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:654 comcnputc(800,6c) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,6c) at comcnputc+0x250 sys/dev/ic/com.c:1269 cnputc(6c) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(6c) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x843 sys/kern/subr_prf.c:-1 db_printf(ffffffff8338cc70) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff80003c49d330) at db_ktrap+0x101 db_printtrap sys/arch/amd64/amd64/db_interface.c:99 [inline] db_ktrap(6,0,ffff80003c49d330) at db_ktrap+0x101 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff80003c49d330) at kerntrap+0x1dc sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b arp_rtrequest(ffff800000039058,1,fffffd806a473d18) at arp_rtrequest+0x66f arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806a473d18) at arp_rtrequest+0x66f sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c49d610,0,ffff80003c49d590,0) at rtrequest+0xc5c sys/net/route.c:1117 end trace frame: 0xffff80003c49d600, count: 0 ddb{0}> trace x86_ipi_db(ffffffff838baff0) 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_1(3f8,5) at x86_bus_space_io_read_1+0x37 sys/arch/amd64/amd64/bus_space.c:654 comcnputc(800,6c) at comcnputc+0x250 comcn_read_reg sys/dev/ic/com.c:1655 [inline] comcnputc(800,6c) at comcnputc+0x250 sys/dev/ic/com.c:1269 cnputc(6c) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(6c) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x843 sys/kern/subr_prf.c:-1 db_printf(ffffffff8338cc70) at db_printf+0x9b sys/kern/subr_prf.c:-1 db_ktrap(6,0,ffff80003c49d330) at db_ktrap+0x101 db_printtrap sys/arch/amd64/amd64/db_interface.c:99 [inline] db_ktrap(6,0,ffff80003c49d330) at db_ktrap+0x101 sys/arch/amd64/amd64/db_interface.c:128 kerntrap(ffff80003c49d330) at kerntrap+0x1dc sys/arch/amd64/amd64/trap.c:323 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b arp_rtrequest(ffff800000039058,1,fffffd806a473d18) at arp_rtrequest+0x66f arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806a473d18) at arp_rtrequest+0x66f sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c49d610,0,ffff80003c49d590,0) at rtrequest+0xc5c sys/net/route.c:1117 rtm_output(ffff80000149bf00,ffff80003c49d6b8,ffff80003c49d610,0,0) at rtm_output+0x876 sys/net/rtsock.c:973 route_output(fffffd8067646800,ffff8000015993e8) at route_output+0x9a1 sys/net/rtsock.c:878 route_send(ffff8000015993e8,fffffd8067646800,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff8000015993e8,0,ffff80003c49d858,0,0,802) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a2962b0,7,ffff80003c49d950,802,ffff80003c49da00) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a2962b0,ffff80003c49dab0,ffff80003c49da00) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c49dab0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c49dab0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4b74c4ce200, count: -22 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0x712fa0921bd0, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0x712fa0921bd0, count: -1