*cpu0: uvm_fault(0xffffffff83961b00, 0xffff8000014b20aa, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x716eb57c5600, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000317dff70 rbx 0 rdx 0 rcx 0xffff80002a2807d0 rax 0x2a r8 0xffff8000317dfea0 r9 0x1 r10 0xc71d05eca971daef r11 0xd00efd7056ae0434 r12 0 r13 0xffffffff82f161f8 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff830a44c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff8000317dfef0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{1}> show proc PROC (syz-executor) tid=495319 pid=96094 tcnt=3 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a2814a0,0xffff80002a281740 process=0xffff80003c41e5e0 user=0xffff8000317da000, vmspace=0xfffffd806beff3d8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *96094 495319 84977 0 7 0 syz-executor 96094 219701 84977 0 3 0x4000080 fsleep syz-executor 96094 44963 84977 0 3 0x4000080 kqread syz-executor 60662 101058 44876 0 2 0 syz-executor 60662 434186 44876 0 7 0x4000000 syz-executor 27662 257367 96629 0 2 0 syz-executor 27662 192454 96629 0 3 0x4000080 fsleep syz-executor 7881 77887 83536 0 2 0 syz-executor 7881 132362 83536 0 3 0x4000080 kqpoll syz-executor 7881 54019 83536 0 3 0x4000080 kqread syz-executor 71728 320056 89199 0 3 0x80 nanoslp syz-executor 71728 348333 89199 0 3 0x4000080 sbwait syz-executor 71728 53813 89199 0 3 0x4000080 fsleep syz-executor 19627 14140 0 0 3 0x14200 acct acct 5342 258885 0 0 3 0x14200 bored sosplice 89199 241126 12049 0 3 0x82 nanoslp syz-executor 96629 295171 12049 0 3 0x82 nanoslp syz-executor 75245 186775 12049 0 3 0x82 wait syz-executor 44876 427158 12049 0 3 0x82 nanoslp syz-executor 46501 450355 12049 0 2 0x2 syz-executor 80451 417681 12049 0 3 0x82 nanoslp syz-executor 84977 410558 12049 0 3 0x82 nanoslp syz-executor 83536 255190 12049 0 3 0x82 nanoslp syz-executor 12049 36490 85628 0 3 0x82 kqread syz-executor 85628 353116 76975 0 3 0x10008a sigsusp ksh 76975 320752 89033 0 3 0x98 kqread sshd-session 89033 294223 12359 0 3 0x92 kqread sshd-session 3174 352808 1 0 3 0x100083 ttyin getty 12359 106014 1 0 3 0x88 kqread sshd 2831 304399 76237 74 3 0x1100092 bpf pflogd 76237 299649 1 0 3 0x80 sbwait pflogd 50776 21053 60145 73 3 0x1100090 kqread syslogd 60145 261907 1 0 3 0x100082 sbwait syslogd 56133 462947 1 0 3 0x100080 kqread resolvd 88852 18423 96859 77 3 0x100092 kqread dhcpleased 37418 363110 96859 77 3 0x100092 kqread dhcpleased 96859 383136 1 0 3 0x80 kqread dhcpleased 77809 252286 0 0 3 0x14200 bored smr 46766 160043 0 0 2 0x14200 zerothread 42901 405530 0 0 3 0x14200 aiodoned aiodoned 92679 238245 0 0 3 0x14200 syncer update 92261 285612 0 0 3 0x14200 cleaner cleaner 5025 281219 0 0 3 0x14200 reaper reaper 38009 106619 0 0 3 0x14200 pgdaemon pagedaemon 84190 412912 0 0 3 0x14200 bored viomb 84439 266699 0 0 3 0x40014200 acpi0 acpi0 98786 104389 0 0 3 0x40014200 idle1 58472 303190 0 0 3 0x14200 bored softnet3 24260 229904 0 0 3 0x14200 bored softnet2 51332 333049 0 0 3 0x14200 bored softnet1 3149 311127 0 0 3 0x14200 bored softnet0 3107 302992 0 0 3 0x14200 bored systqmp 32764 162804 0 0 3 0x14200 bored systq 24804 59033 0 0 3 0x14200 tmoslp softclockmp 32902 494665 0 0 3 0x40014200 tmoslp softclock 86684 252476 0 0 3 0x40014200 idle0 1 343248 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &pr->ps_mtx r = 0 (0xffff8000ffff4f50) #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 proc_suspend_check+0x43 sys/kern/kern_sig.c:2281 #4 sleep_signal_check+0x49 sys/kern/kern_synch.c:488 #5 sleep_finish+0xf8 sys/kern/kern_synch.c:377 #6 sys_nanosleep+0x28a sys/kern/kern_time.c:303 #7 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #8 Xsyscall+0x128 Process 60662 (syz-executor) thread 0xffff80002a281c50 (434186) exclusive rwlock netlock r = 0 (0xffffffff83813630) #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 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 (0xffff800010fd8d58) #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 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 46501 (syz-executor) thread 0xffff80002a2b7728 (450355) exclusive rrwlock inode r = 0 (0xfffffd8068cf81c0) #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 (0xfffffd806cd178b8) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10214 11055K 11310K 166960K 11899 0 pcb 17 14K 15K 166960K 89 0 rtable 172 7K 9K 166960K 525 0 pf 34 17K 19K 166960K 63 0 ifaddr 35 5K 7K 166960K 56 0 ifgroup 55 2K 2K 166960K 75 0 sysctl 1 1K 9K 166960K 5 0 counters 66 36K 37K 166960K 86 0 ioctlops 0 0K 4K 166960K 1746 0 iov 0 0K 16K 166960K 100 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1402 88K 89K 166960K 1806 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 21 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 504 0 sigio 0 0K 0K 166960K 5 0 proc 72 91K 128K 166960K 559 0 subproc 72 4K 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 40 0 in_multi 64 4K 7K 166960K 113 0 ether_multi 1 0K 0K 166960K 5 0 mrt 0 0K 0K 166960K 3 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 427 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 250 168K 177K 166960K 6209 0 UVM aobj 12 2K 2K 166960K 14 0 pinsyscall 42 84K 106K 166960K 1585 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 12 0K 2K 166960K 34 0 temp 84 8666K 8792K 166960K 14955 0 kqueue 17 26K 28K 166960K 102 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 86 0 81 2 1 1 2 0 8 0 rtentry 176 161 0 88 6 0 6 6 0 8 0 unpcb 144 441 0 422 8 5 3 6 0 8 2 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 162 0 156 7 3 4 7 0 8 3 arp 128 21 0 10 1 0 1 1 0 8 0 inpcb 384 641 0 633 14 8 6 11 0 8 5 nd6 144 26 0 10 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 8 0 8 2 1 1 1 0 8 1 pppxif 1504 1 0 1 1 1 0 1 0 8 0 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 13 1 0 1 1 0 8 0 pfstkey 128 47 0 13 2 0 2 2 0 8 0 pfstate 384 47 0 13 5 0 5 5 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 art_heap8 4096 5 0 1 5 0 5 5 0 8 1 art_heap4 256 487 0 193 29 1 28 29 0 8 5 art_table 32 492 0 194 4 0 4 4 0 8 0 art_node 16 127 0 63 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 4 1 0 1 1 0 8 0 semapl 112 17 0 7 1 0 1 1 0 8 0 shmpl 112 11 0 2 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2312 0 805 95 0 95 95 0 8 0 ffsino 288 2312 0 805 109 0 109 109 0 8 0 nchpl 144 3006 0 1317 63 0 63 63 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 2621 0 0 54 0 54 54 0 8 0 vnodes 216 2621 0 0 146 0 146 146 0 8 0 namei 1024 10201 0 10200 2 1 1 2 0 8 0 percpumem 16 58 0 10 1 0 1 1 0 8 0 kstatmem 264 40 0 12 2 0 2 2 0 8 0 scxspl 216 9354 0 9354 12 4 8 8 1 8 8 plimitpl 152 103 0 86 1 0 1 1 0 8 0 sigapl 424 806 0 755 7 1 6 7 0 8 0 knotepl 120 332 0 0 10 0 10 10 0 8 0 kqueuepl 224 242 0 226 7 6 1 7 0 8 0 pipepl 336 162 0 135 6 3 3 6 0 8 0 fdescpl 520 785 0 754 3 0 3 3 0 8 0 filepl 160 4932 0 4701 28 13 15 24 0 8 5 lockfpl 104 150 0 148 1 0 1 1 0 8 0 lockfspl 48 42 0 40 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 37 0 20 1 0 1 1 0 8 0 ucredpl 104 898 0 884 1 0 1 1 0 8 0 zombiepl 144 757 0 755 1 0 1 1 0 8 0 processpl 1208 806 0 755 5 0 5 5 0 8 0 procpl 656 1459 0 1400 6 0 6 6 0 8 0 srpgc 96 6 0 6 1 0 1 1 0 8 1 sosppl 168 6 0 6 1 0 1 1 0 8 1 sockpl 728 1179 0 1147 25 17 8 21 0 8 4 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 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 115 0 0 15 0 15 15 0 8 0 mcl2k 2048 26 0 0 3 0 3 3 0 8 0 mtagpl 96 13 0 0 1 0 1 1 0 8 0 mbufpl 256 547 0 0 35 0 35 35 0 8 0 bufpl 280 3155 0 121 217 0 217 217 0 8 0 anonpl 32 9484 0 0 77 0 77 77 0 246 0 amapchunkpl 152 19423 0 18831 31 3 28 30 0 158 4 amappl16 200 2557 0 2489 20 6 14 17 0 8 7 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 109 0 97 1 0 1 1 0 8 0 amappl13 176 2 0 2 1 1 0 1 0 8 0 amappl12 168 1428 0 1397 4 2 2 3 0 8 0 amappl11 160 83 0 69 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 273 0 273 1 1 0 1 0 8 0 amappl8 136 29 0 26 1 0 1 1 0 8 0 amappl7 128 102 0 90 1 0 1 1 0 8 0 amappl6 120 225 0 222 1 0 1 1 0 8 0 amappl5 112 142 0 132 1 0 1 1 0 8 0 amappl4 104 312 0 292 1 0 1 1 0 8 0 amappl3 96 3755 0 3640 5 1 4 4 0 8 1 amappl2 88 628 0 566 2 0 2 2 0 8 0 amappl1 80 9786 0 9183 14 1 13 14 0 8 0 amappl 88 5457 0 5280 5 0 5 5 0 92 0 dma65536 65536 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 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 13 0 2 1 0 1 1 0 8 0 uaddrrnd 24 785 0 754 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 785 0 754 1 0 1 1 0 8 0 vmmpekpl 168 7986 0 7952 3 0 3 3 0 8 1 vmmpepl 168 55115 0 53093 101 1 100 101 0 357 8 vmsppl 480 784 0 754 5 1 4 5 0 8 0 rwobjpl 72 19382 0 15769 67 1 66 66 0 8 0 pdppl 4096 1577 0 1508 101 30 71 87 0 8 2 pvpl 32 16995 0 0 138 0 138 138 0 265 0 pmappl 256 784 0 754 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 421 0 42 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff838b9ff0) 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 __mp_lock(ffffffff83961cb0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83961cb0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840 Xsoftclock() at Xsoftclock+0x27 cnputc(30) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(30) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff83401c8e) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833a2361) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80003c4154c0,ffff8000014b20aa) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80003c4154c0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 end trace frame: 0xffff80003c415540, count: 0 ddb{0}> trace x86_ipi_db(ffffffff838b9ff0) 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 __mp_lock(ffffffff83961cb0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83961cb0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840 Xsoftclock() at Xsoftclock+0x27 cnputc(30) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(30) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff83401c8e) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833a2361) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff80003c4154c0,ffff8000014b20aa) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff80003c4154c0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b arp_rtrequest(ffff800000039058,1,fffffd8068d07658) at arp_rtrequest+0x66f arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd8068d07658) at arp_rtrequest+0x66f sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c4157a0,0,ffff80003c415720,0) at rtrequest+0xc5c sys/net/route.c:1117 rtm_output(ffff800001494300,ffff80003c415848,ffff80003c4157a0,0,0) at rtm_output+0x876 sys/net/rtsock.c:973 route_output(fffffd806664e300,ffff800010fd8b80) at route_output+0x9a1 sys/net/rtsock.c:878 route_send(ffff800010fd8b80,fffffd806664e300,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800010fd8b80,0,ffff80003c4159e8,0,0,802) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a281c50,3,ffff80003c415ae0,802,ffff80003c415b90) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a281c50,ffff80003c415c40,ffff80003c415b90) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c415c40) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c415c40) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8a51d465fe0, count: -25 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x680 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x716eb57c5600, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x716eb57c5600, count: -1