*cpu0: uvm_fault(0xffffffff839af508, 0xffff8000015b102a, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x750fad64d990, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c443a50 rbx 0 rdx 0 rcx 0xffff800030fe0a68 rax 0x2a r8 0xffff80003c443980 r9 0x1 r10 0xbb3bb3f6608ae305 r11 0x58d17f4c4867d8fd r12 0 r13 0 r14 0 r15 0 rip 0xffffffff812a34c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c4439d0 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x680 ddb{1}> show proc PROC (syz-executor) tid=248844 pid=68151 tcnt=4 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=0xffff800030fe0cf8,0xffff800030fe1748 process=0xffff800038012f50 user=0xffff80003c43e000, vmspace=0xfffffd8067beb020 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *68151 248844 47261 0 7 0 syz-executor 68151 100675 47261 0 7 0x4000000 syz-executor 68151 256802 47261 0 2 0x4000000 syz-executor 68151 512986 47261 0 2 0x4000000 syz-executor 10111 100910 71987 0 2 0 syz-executor 10111 347801 71987 0 3 0x4000080 fsleep syz-executor 96383 385505 88553 0 2 0 syz-executor 96383 262325 88553 0 3 0x4000080 fsleep syz-executor 75274 437285 25248 0 2 0 syz-executor 75274 145595 25248 0 3 0x4000080 kqread syz-executor 4303 14323 59979 0 3 0x80 nanoslp syz-executor 4303 345564 59979 0 3 0x4000080 bell syz-executor 4303 83700 59979 0 3 0x4000080 fsleep syz-executor 62319 146265 0 0 3 0x14200 bored sosplice 93433 352121 47021 0 3 0x82 nanoslp syz-executor 8238 181073 47021 0 3 0x82 nanoslp syz-executor 25248 461559 47021 0 3 0x82 nanoslp syz-executor 59979 282578 47021 0 3 0x82 nanoslp syz-executor 88553 32306 47021 0 3 0x82 nanoslp syz-executor 62478 323962 47021 0 3 0x2 biowait syz-executor 71987 352591 47021 0 3 0x82 nanoslp syz-executor 47261 419578 47021 0 3 0x82 nanoslp syz-executor 47021 497582 54760 0 3 0x82 kqread syz-executor 54760 95358 7962 0 3 0x10008a sigsusp ksh 7962 277137 85252 0 3 0x98 kqread sshd-session 85252 458041 2794 0 3 0x92 kqread sshd-session 27021 69650 1 0 3 0x100083 ttyin getty 2794 303471 1 0 3 0x88 kqread sshd 13026 94305 76868 74 3 0x1100092 bpf pflogd 76868 262183 1 0 3 0x80 sbwait pflogd 94551 312604 89681 73 3 0x1100090 kqread syslogd 89681 382673 1 0 3 0x100082 sbwait syslogd 54910 386166 1 0 3 0x100080 kqread resolvd 12298 52474 17979 77 3 0x100092 kqread dhcpleased 57088 426717 17979 77 3 0x100092 kqread dhcpleased 17979 299559 1 0 3 0x80 kqread dhcpleased 44216 435597 0 0 3 0x14200 bored smr 64203 274183 0 0 2 0x14200 zerothread 70759 481803 0 0 3 0x14200 aiodoned aiodoned 59901 203616 0 0 3 0x14200 syncer update 22067 344920 0 0 3 0x14200 cleaner cleaner 82373 306210 0 0 3 0x14200 reaper reaper 53608 29639 0 0 3 0x14200 pgdaemon pagedaemon 68928 58056 0 0 3 0x14200 bored viomb 64844 407743 0 0 3 0x40014200 acpi0 acpi0 1091 194400 0 0 3 0x40014200 idle1 17364 389432 0 0 3 0x14200 bored softnet3 1627 208934 0 0 3 0x14200 bored softnet2 26171 251636 0 0 3 0x14200 bored softnet1 56171 72061 0 0 3 0x14200 netlock softnet0 3613 425946 0 0 2 0x14200 systqmp 86848 364740 0 0 3 0x14200 bored systq 14369 368338 0 0 3 0x14200 tmoslp softclockmp 84256 462878 0 0 3 0x40014200 tmoslp softclock 65822 381347 0 0 3 0x40014200 idle0 1 326722 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex /syzkaller/managers/multicore/kernel/sys/dev/kcov.c:129 r = 0 (0xffffffff838628b0) #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 kcov_remote_enter+0x20 sys/dev/kcov.c:-1 #4 taskq_thread+0x141 sys/kern/kern_task.c:444 #5 proc_trampoline+0x10 Process 68151 (syz-executor) thread 0xffff800030fe1738 (100675) exclusive rwlock netlock r = 0 (0xffffffff8381d2e0) #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 (0xffff80000149a7a8) #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 62478 (syz-executor) thread 0xffff80002a2974a0 (323962) exclusive rrwlock inode r = 0 (0xfffffd806dd8f788) #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 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 (0xfffffd8070295428) #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 vget+0x2bd sys/kern/vfs_subr.c:693 #6 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x21b sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #12 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #13 Xsyscall+0x128 Process 56171 (softnet0) thread 0xffff8000ffffe7b0 (72061) shared rwlock softnet0 r = 0 (0xffff80000002c078) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10210 11027K 11816K 166960K 12006 0 pcb 17 13K 13K 166960K 65 0 rtable 249 9K 9K 166960K 494 0 pf 39 18K 18K 166960K 67 0 ifaddr 44 7K 7K 166960K 60 0 ifgroup 64 2K 2K 166960K 91 0 sysctl 2 1K 9K 166960K 8 0 counters 74 37K 37K 166960K 226 0 ioctlops 0 0K 4K 166960K 1617 0 iov 0 0K 20K 166960K 19 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1468 92K 92K 166960K 1698 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 8 0K 0K 166960K 14 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 427 0 sigio 0 0K 0K 166960K 8 0 proc 72 91K 127K 166960K 577 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 125 0 in_multi 90 6K 7K 166960K 108 0 ether_multi 1 0K 0K 166960K 3 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 405 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 234 175K 190K 166960K 5604 0 UVM aobj 17 2K 2K 166960K 18 0 pinsyscall 42 84K 103K 166960K 1525 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 20 0 NDP 14 0K 2K 166960K 38 0 temp 43 8663K 8740K 166960K 8757 0 kqueue 13 20K 26K 166960K 84 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 93 0 87 2 0 2 2 0 8 1 rtentry 176 124 0 12 6 0 6 6 0 8 0 unpcb 144 217 0 199 2 0 2 2 0 8 1 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 808 179 0 175 7 0 7 7 0 8 6 arp 128 24 0 0 1 0 1 1 0 8 0 inpcb 384 473 0 464 8 0 8 8 0 8 7 nd6 144 24 0 3 1 0 1 1 0 8 0 pkpcb 40 8 0 8 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 73 0 71 1 0 1 1 0 8 0 pppxif 1504 68 0 66 1 0 1 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 2 0 0 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 38 0 1 1 0 1 1 0 8 0 pfstkey 128 38 0 1 2 0 2 2 0 8 0 pfstate 384 38 0 1 4 0 4 4 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 477 0 52 29 2 27 29 0 8 0 art_table 32 479 0 52 4 0 4 4 0 8 0 art_node 16 121 0 23 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 12 0 6 1 0 1 1 0 8 0 shmpl 112 15 0 1 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2114 0 606 95 0 95 95 0 8 0 ffsino 288 2114 0 606 109 0 109 109 0 8 0 nchpl 144 2752 0 1058 63 0 63 63 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 2408 0 0 50 0 50 50 0 8 0 vnodes 216 2408 0 0 134 0 134 134 0 8 0 namei 1024 9470 0 9470 2 1 1 2 0 8 1 percpumem 16 128 0 76 1 0 1 1 0 8 0 kstatmem 264 44 0 14 3 0 3 3 0 8 1 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 8783 0 8782 10 3 7 8 1 8 6 plimitpl 152 69 0 52 1 0 1 1 0 8 0 sigapl 424 731 0 681 8 2 6 7 0 8 0 knotepl 120 315 0 0 10 0 10 10 0 8 0 kqueuepl 224 118 0 108 1 0 1 1 0 8 0 pipepl 336 125 0 98 3 0 3 3 0 8 0 fdescpl 520 712 0 681 3 0 3 3 0 8 0 filepl 160 3913 0 3688 18 4 14 18 0 8 4 lockfpl 104 252 0 249 2 0 2 2 0 8 1 lockfspl 48 49 0 46 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 387 0 374 1 0 1 1 0 8 0 zombiepl 144 683 0 681 1 0 1 1 0 8 0 processpl 1208 731 0 681 5 0 5 5 0 8 0 procpl 656 1252 0 1194 7 1 6 6 0 8 0 sosppl 168 2 0 2 1 1 0 1 0 8 0 sockpl 728 799 0 766 10 1 9 10 0 8 5 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 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 54 0 0 7 0 7 7 0 8 0 mtagpl 96 48 0 0 2 0 2 2 0 8 0 mbufpl 256 4581 0 0 287 0 287 287 0 8 0 bufpl 280 2856 0 123 196 0 196 196 0 8 0 anonpl 32 7656 0 0 62 0 62 62 0 246 0 amapchunkpl 152 18138 0 17666 32 0 32 32 0 158 12 amappl16 200 2455 0 2421 14 3 11 11 0 8 8 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 116 0 104 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 1360 0 1329 3 1 2 2 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 54 0 54 1 1 0 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 50 0 48 1 0 1 1 0 8 0 amappl7 128 119 0 107 1 0 1 1 0 8 0 amappl6 120 181 0 177 1 0 1 1 0 8 0 amappl5 112 123 0 113 1 0 1 1 0 8 0 amappl4 104 325 0 304 1 0 1 1 0 8 0 amappl3 96 3221 0 3114 4 0 4 4 0 8 0 amappl2 88 643 0 582 2 0 2 2 0 8 0 amappl1 80 9957 0 9353 15 1 14 15 0 8 0 amappl 88 4857 0 4696 5 0 5 5 0 92 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 8 0 8 2 1 1 1 0 8 1 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 17 0 1 1 0 1 1 0 8 0 uaddrrnd 24 712 0 681 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 712 0 681 1 0 1 1 0 8 0 vmmpekpl 168 7610 0 7568 3 0 3 3 0 8 0 vmmpepl 168 51656 0 49676 98 0 98 98 0 357 9 vmsppl 480 711 0 681 5 0 5 5 0 8 1 rwobjpl 72 18883 0 15534 62 0 62 62 0 8 0 pdppl 4096 1432 0 1362 100 28 72 84 0 8 2 pvpl 32 15637 0 0 127 0 127 127 0 265 0 pmappl 256 711 0 681 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 671 0 34 19 0 19 19 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83889ff0) 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(ffffffff839eaca8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839eaca8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff8000317f0640,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f Xspllower() at Xspllower+0x1d cnputc(75) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(75) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff8340363e) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833a2569) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff8000317f0af0,ffff8000015b102a) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff8000317f0af0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 end trace frame: 0xffff8000317f0b70, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83889ff0) 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(ffffffff839eaca8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839eaca8) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff8000317f0640,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f Xspllower() at Xspllower+0x1d cnputc(75) at cnputc+0x61 sys/dev/cons.c:218 db_putchar(75) at db_putchar+0x65c sys/ddb/db_output.c:155 kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065 db_printf(ffffffff8340363e) at db_printf+0x9b sys/kern/subr_prf.c:-1 fault(ffffffff833a2569) at fault+0xa7 sys/arch/amd64/amd64/trap.c:157 kpageflttrap(ffff8000317f0af0,ffff8000015b102a) at kpageflttrap+0x385 sys/arch/amd64/amd64/trap.c:290 kerntrap(ffff8000317f0af0) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b arp_rtrequest(ffff800000039058,1,fffffd805e5ef448) at arp_rtrequest+0x66f arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd805e5ef448) at arp_rtrequest+0x66f sys/netinet/if_ether.c:184 rtrequest(1,ffff8000317f0dd0,0,ffff8000317f0d50,0) at rtrequest+0xc5c sys/net/route.c:1117 rtm_output(ffff80000149ca00,ffff8000317f0e78,ffff8000317f0dd0,0,0) at rtm_output+0x876 sys/net/rtsock.c:973 route_output(fffffd805ad3ba00,ffff80000149a5d0) at route_output+0x9a1 sys/net/rtsock.c:878 route_send(ffff80000149a5d0,fffffd805ad3ba00,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff80000149a5d0,0,ffff8000317f1018,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800030fe1738,4,ffff8000317f1110,808,ffff8000317f11c0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff800030fe1738,ffff8000317f1270,ffff8000317f11c0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff8000317f1270) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000317f1270) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfa65305a3d0, 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: 0x750fad64d990, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x750fad64d990, count: -1