uvm_fault(0xffffffff8277aa10, 0xffffffff82672880, 0, 2) -> e kernel: page fault trap, code=0 Stopped at m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff8277aa10, 0xffffffff82672880, 0, 2) -> e m_copyback(ffff80002230d130,148,0,ffff80002230d2f4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff80002230d130,148,0,ffff80002230d2f4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 end trace frame: 0xffff80002230d3b0, count: 0 ddb{0}> trace m_copyback(ffff80002230d130,148,0,ffff80002230d2f4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff80002230d130,148,0,ffff80002230d2f4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff8000000449c0,ffff80002230d3d8,fffffd806751a600) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff80002230d4d8,0,ffff800000ac2528,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b26000,ffff80002230d7a8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff80002230d7a8,ffff80002230d7b4,29,0,ffff800000b26000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b26000,fffffd806751a600) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff80002230da98,ffff800021f01000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff80002230d8f0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806f069278,ffff80002230da98,11,fffffd807f7bf960) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca75568,ffff80002230da98,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800023faa2a8,f0,ffff80002230da98,0,ffff80002230db80) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800023faa2a8,ffff80002230db30,ffff80002230db80) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff80002230dc00) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002230dc00) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa497d12b0d0, count: -14 ddb{0}> show registers rdi 0 rsi 0x86a1d acpi_pdirpa+0x72885 rbp 0xffff80002230d110 rbx 0xffffffffffff81c7 rdx 0x86a1c acpi_pdirpa+0x72884 rcx 0xffffffff826b1a40 mbstat_boot_boot_cpumem rax 0 r8 0x2 r9 0xffffffff81e7a848 pf_translate_a+0x1a8 r10 0x1 r11 0xa9b22dcd63b2a118 r12 0xfffffd8067d2de00 r13 0x118 r14 0x30 r15 0xffff80002230d310 rip 0xffffffff81142cf9 m_copyback+0x119 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002230d050 ss 0x10 m_copyback+0x119: addq $0x1,0x8(%rcx,%rbx,8) ddb{0}> show proc PROC (syz-executor.1) pid=65650 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800023faac88,0xffffffff82888178 process=0xffff800020ecf3b8 user=0xffff800022308000, vmspace=0xfffffd806720b180 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 6730 341287 74725 0 7 0 syz-executor.1 * 6730 65650 74725 0 7 0x4000000 syz-executor.1 91477 459714 0 0 3 0x14200 acct acct 74725 163592 85834 0 3 0x82 nanosleep syz-executor.1 51630 416481 0 0 3 0x14280 nfsidl nfsio 90135 463017 0 0 3 0x14280 nfsidl nfsio 56089 266245 0 0 3 0x14280 nfsidl nfsio 78811 186924 0 0 3 0x14280 nfsidl nfsio 97762 350945 0 0 3 0x14280 nfsidl nfsio 85814 194727 0 0 3 0x14280 nfsidl nfsio 71210 73513 0 0 3 0x14280 nfsidl nfsio 19318 362875 0 0 3 0x14280 nfsidl nfsio 90177 376057 0 0 3 0x14280 nfsidl nfsio 26011 505447 0 0 3 0x14280 nfsidl nfsio 15608 200635 0 0 3 0x14280 nfsidl nfsio 48880 385525 0 0 3 0x14280 nfsidl nfsio 70455 504614 0 0 3 0x14280 nfsidl nfsio 865 167153 0 0 3 0x14280 nfsidl nfsio 113 502826 0 0 3 0x14280 nfsidl nfsio 5011 400654 0 0 3 0x14280 nfsidl nfsio 18802 295133 0 0 3 0x14280 nfsidl nfsio 48308 45880 0 0 3 0x14280 nfsidl nfsio 17068 442503 0 0 3 0x14280 nfsidl nfsio 37772 299054 0 0 3 0x14280 nfsidl nfsio 39917 351136 0 0 3 0x14200 bored sosplice 20965 21748 85834 0 3 0x2 biowait syz-executor.0 85834 423420 39148 0 3 0x82 thrsleep syz-fuzzer 85834 388737 39148 0 3 0x4000082 nanosleep syz-fuzzer 85834 186503 39148 0 3 0x4000082 thrsleep syz-fuzzer 85834 361791 39148 0 3 0x4000082 thrsleep syz-fuzzer 85834 439119 39148 0 3 0x4000082 nanosleep syz-fuzzer 85834 313953 39148 0 3 0x4000082 thrsleep syz-fuzzer 85834 372772 39148 0 3 0x4000082 thrsleep syz-fuzzer 85834 362601 39148 0 3 0x4000082 kqread syz-fuzzer 39148 49461 96616 0 3 0x10008a pause ksh 96616 239177 52877 0 3 0x92 select sshd 55206 341386 1 0 3 0x100083 ttyin getty 52877 481531 1 0 3 0x80 select sshd 1275 103012 32988 74 3 0x100092 bpf pflogd 32988 366879 1 0 3 0x80 netio pflogd 47916 79395 69012 73 3 0x100090 kqread syslogd 69012 308797 1 0 3 0x100082 netio syslogd 92963 360082 1 77 3 0x100090 poll dhclient 36081 84558 1 0 3 0x80 poll dhclient 33753 178871 0 0 3 0x14200 bored smr 31005 132505 0 0 3 0x14200 pgzero zerothread 6786 28111 0 0 3 0x14200 aiodoned aiodoned 20744 423939 0 0 3 0x14200 syncer update 68448 25744 0 0 3 0x14200 cleaner cleaner 14751 417815 0 0 3 0x14200 reaper reaper 25329 95956 0 0 3 0x14200 pgdaemon pagedaemon 27453 475049 0 0 3 0x14200 bored crynlk 47532 503749 0 0 3 0x14200 bored crypto 18971 351285 0 0 3 0x40014200 acpi0 acpi0 69717 254477 0 0 3 0x40014200 idle1 64820 467775 0 0 3 0x14200 bored softnet 38985 264111 0 0 3 0x14200 bored systqmp 14556 454905 0 0 3 0x14200 bored systq 98311 13354 0 0 3 0x40014200 bored softclock 21915 242891 0 0 3 0x40014200 idle0 1 336355 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 6730 (syz-executor.1) thread 0xffff800023faa2a8 (65650) exclusive rwlock netlock r = 0 (0xffffffff827435e0) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 tun_dev_write+0x1f9 sys/net/if_tun.c:867 #2 spec_write+0xd4 sys/kern/spec_vnops.c:309 #3 VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 #4 vn_write+0x14e sys/kern/vfs_vnops.c:414 #5 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #6 sys_write+0x83 sys/kern/sys_generic.c:285 #7 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #7 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8289f9d8) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 vn_write+0x42 sys/kern/vfs_vnops.c:399 #2 dofilewritev+0x1ab sys/kern/sys_generic.c:365 #3 sys_write+0x83 sys/kern/sys_generic.c:285 #4 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 Process 20965 (syz-executor.0) thread 0xffff800020de6280 (21748) exclusive rrwlock inode r = 0 (0xfffffd806c9e3b38) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 rw_enter+0x446 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 vget+0x1c6 sys/kern/vfs_subr.c:671 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x6b sys/ufs/ffs/ffs_vfsops.c:1329 #8 ufs_lookup+0x151d sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x708 sys/kern/vfs_lookup.c:568 #11 namei+0x5f7 sys/kern/vfs_lookup.c:249 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #13 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #13 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c9e3918) #0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164 #1 rw_enter+0x446 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603 #4 vn_lock+0x6c sys/kern/vfs_vnops.c:575 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x5f7 sys/kern/vfs_lookup.c:249 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1853 #8 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9544 6456K 6945K 78643K 12804 0 pcb 13 8K 8K 78643K 206 0 rtable 99 5K 12K 78643K 914 0 ifaddr 83 15K 16K 78643K 300 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 97 0 ioctlops 0 0K 4K 78643K 1855 0 iov 0 0K 32K 78643K 150 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 76K 77K 78643K 1987 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 33 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 391 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 1908 0 sigio 0 0K 0K 78643K 141 0 proc 65 63K 95K 78643K 647 0 subproc 32 2K 2K 78643K 87 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 140 0 in_multi 26 1K 2K 78643K 225 0 ether_multi 1 0K 0K 78643K 25 0 mrt 1 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 2K 78643K 569 0 pfkey data 0 0K 0K 78643K 2 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 165 108K 112K 78643K 8762 0 UVM aobj 78 5K 5K 78643K 85 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 184 0 NDP 15 0K 0K 78643K 64 0 temp 147 3973K 4041K 78643K 15784 0 kqueue 3 4K 12K 78643K 53 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 15 0 9 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 84 0 82 1 0 1 1 0 8 0 rtentry 112 143 0 109 2 0 2 2 0 8 0 unpcb 120 4725 0 4715 4 3 1 2 0 8 0 syncache 272 10 0 10 4 4 0 1 0 8 0 tcpcb 592 1269 0 1265 14 13 1 2 0 8 0 inpcb 296 2327 0 2320 14 13 1 2 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 38 0 30 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 ppxss 1136 4 0 4 4 4 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 20 0 20 7 7 0 1 0 482 0 pffrnode 88 20 0 20 7 7 0 1 0 8 0 pffrent 40 353 0 353 8 7 1 1 0 8 1 pfosfp 40 847 0 423 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfrktable 1344 118 0 114 6 5 1 2 0 8 0 pftag 88 4 0 4 1 1 0 1 0 8 0 pfstitem 24 22 0 20 1 0 1 1 0 8 0 pfstkey 112 24 0 22 1 0 1 1 0 8 0 pfstate 328 22 0 20 2 1 1 2 0 8 0 pfrule 1360 65 0 50 5 3 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 717 0 538 14 2 12 13 0 8 0 art_table 32 718 0 538 2 0 2 2 0 8 0 art_node 16 142 0 113 1 0 1 1 0 8 0 sysvmsgpl 40 67 0 51 3 2 1 1 0 8 0 semapl 112 389 0 379 1 0 1 1 0 8 0 shmpl 112 82 0 7 3 0 3 3 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 3769 0 2375 89 0 89 89 0 8 0 ffsino 272 3769 0 2375 94 0 94 94 0 8 0 nchpl 144 6551 0 4958 60 0 60 60 0 8 0 uvmvnodes 72 4382 0 0 80 0 80 80 0 8 0 vnodes 208 4382 0 0 231 0 231 231 0 8 0 namei 1024 18791 0 18791 5 4 1 1 0 8 1 percpumem 16 59 0 27 1 0 1 1 0 8 0 vcpupl 1984 9 0 0 2 0 2 2 0 8 0 vmpool 560 27 0 18 3 2 1 1 0 8 0 pfiaddrpl 120 33 0 29 1 0 1 1 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 200 20452 0 20451 22 21 1 7 0 8 0 plimitpl 152 137 0 129 1 0 1 1 0 8 0 sigapl 424 2136 0 2083 7 0 7 7 0 8 0 futexpl 56 25116 0 25116 3 2 1 1 0 8 1 knotepl 112 151 0 131 1 0 1 1 0 8 0 kqueuepl 152 788 0 780 1 0 1 1 0 8 0 pipepl 304 289 0 278 16 15 1 2 0 8 0 fdescpl 496 2099 0 2083 3 0 3 3 0 8 0 filepl 152 15824 0 15722 11 6 5 6 0 8 1 lockfpl 104 388 0 387 1 0 1 1 0 8 0 lockfspl 48 125 0 124 1 0 1 1 0 8 0 sessionpl 120 21 0 10 1 0 1 1 0 8 0 pgrppl 48 45 0 34 1 0 1 1 0 8 0 ucredpl 96 1497 0 1488 1 0 1 1 0 8 0 zombiepl 144 2083 0 2083 3 2 1 1 0 8 1 processpl 1008 2136 0 2083 7 0 7 7 0 8 0 procpl 632 7845 0 7784 18 11 7 7 0 8 1 sosppl 144 20 0 20 11 10 1 1 0 8 1 sockpl 400 7152 0 7133 25 21 4 5 0 8 2 mcl64k 65536 429 0 0 51 26 25 34 0 8 2 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 14 0 0 2 0 2 2 0 8 0 mcl9k 9216 10 0 0 1 0 1 1 0 8 0 mcl8k 8192 13 0 0 2 0 2 2 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 281 0 0 34 5 29 34 0 8 0 mtagpl 96 80 0 0 2 0 2 2 0 8 0 mbufpl 256 802 0 0 34 0 34 34 0 8 0 bufpl 280 7234 0 976 448 0 448 448 0 8 0 anonpl 16 244837 0 226722 165 88 77 91 0 124 0 amapchunkpl 152 15945 0 15636 43 29 14 26 0 158 0 amappl16 192 9172 0 8317 117 73 44 55 0 8 1 amappl15 184 227 0 224 1 0 1 1 0 8 0 amappl14 176 25 0 20 1 0 1 1 0 8 0 amappl13 168 45 0 43 1 0 1 1 0 8 0 amappl12 160 925 0 921 2 1 1 1 0 8 0 amappl11 152 306 0 290 1 0 1 1 0 8 0 amappl10 144 13 0 10 1 0 1 1 0 8 0 amappl9 136 368 0 368 1 1 0 1 0 8 0 amappl8 128 220 0 163 2 0 2 2 0 8 0 amappl7 120 302 0 295 1 0 1 1 0 8 0 amappl6 112 390 0 370 1 0 1 1 0 8 0 amappl5 104 1949 0 1935 1 0 1 1 0 8 0 amappl4 96 591 0 558 1 0 1 1 0 8 0 amappl3 88 155 0 147 1 0 1 1 0 8 0 amappl2 80 15155 0 15086 3 1 2 3 0 8 0 amappl1 72 86562 0 86107 29 19 10 19 0 8 0 amappl 80 8184 0 8096 3 0 3 3 0 84 0 dma4096 4096 1 0 1 1 1 0 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 64 84 0 7 2 0 2 2 0 8 0 uaddrrnd 24 2126 0 2101 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2126 0 2101 1 0 1 1 0 8 0 vmmpekpl 168 22394 0 22343 3 0 3 3 0 8 0 vmmpepl 168 294548 0 292454 261 155 106 127 0 357 7 vmsppl 368 2125 0 2101 3 0 3 3 0 8 0 pdppl 4096 4259 0 4211 8 1 7 7 0 8 0 pvpl 32 706910 0 685439 375 171 204 218 0 265 21 pmappl 232 2125 0 2101 5 3 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 377 0 69 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace m_copyback(ffff80002230d130,148,0,ffff80002230d2f4,2) at m_copyback+0x119 m_get sys/sys/percpu.h:125 [inline] m_copyback(ffff80002230d130,148,0,ffff80002230d2f4,2) at m_copyback+0x119 sys/kern/uipc_mbuf.c:756 pflog_mtap(ffff8000000449c0,ffff80002230d3d8,fffffd806751a600) at pflog_mtap+0x446 sys/net/if_pflog.c:389 pflog_packet(ffff80002230d4d8,0,ffff800000ac2528,0,ffffffff82879b30,0) at pflog_packet+0x3a4 pf_test(18,1,ffff800000b26000,ffff80002230d7a8) at pf_test+0xfc5 sys/net/pf.c:7226 ip6_input_if(ffff80002230d7a8,ffff80002230d7b4,29,0,ffff800000b26000) at ip6_input_if+0x945 sys/netinet6/ip6_input.c:300 ipv6_input(ffff800000b26000,fffffd806751a600) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 tun_dev_write(5d01,ffff80002230da98,ffff800021f01000,2) at tun_dev_write+0x204 sys/net/if_tun.c:868 spec_write(ffff80002230d8f0) at spec_write+0xd4 sys/kern/spec_vnops.c:309 VOP_WRITE(fffffd806f069278,ffff80002230da98,11,fffffd807f7bf960) at VOP_WRITE+0xc6 sys/kern/vfs_vops.c:268 vn_write(fffffd806ca75568,ffff80002230da98,0) at vn_write+0x14e sys/kern/vfs_vnops.c:414 dofilewritev(ffff800023faa2a8,f0,ffff80002230da98,0,ffff80002230db80) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff800023faa2a8,ffff80002230db30,ffff80002230db80) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff80002230dc00) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002230dc00) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa497d12b0d0, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d80ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 end of kernel end trace frame: 0x7f7fffffae40, count: -3