uvm_fault(0xfffffd806bc0acc0, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at memcpy+0x15: repe movsq (%rsi),%es:(%rdi) ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd806bc0acc0, 0x0, 0, 1) -> e memcpy() at memcpy+0x15 end trace frame: 0xffff80001d3fffb0, count: 0 ddb> trace memcpy() at memcpy+0x15 tcp_usrreq(fffffd805d8eaaf8,9,fffffd8068c37400,0,0,ffff8000ffff9640) at tcp_usrreq+0xa54 sosend(fffffd805d8eaaf8,0,ffff80001d400158,0,0,80) at sosend+0x669 sys/kern/uipc_socket.c:549 dofilewritev(ffff8000ffff9640,3,ffff80001d400158,0,ffff80001d400240) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff8000ffff9640,ffff80001d4001f0,ffff80001d400240) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff80001d4002c0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc000dff420, count: -7 ddb> show registers rdi 0xfffffd8068c37fb0 rsi 0 rbp 0xffff80001d3fff00 rbx 0xfffffd805c6e6900 rdx 0x28 rcx 0x5 rax 0 r8 0 r9 0x5 r10 0x9abad98aa88c9632 r11 0xfffffd8068c37fb0 r12 0xfffffd8068c37f00 r13 0x28 r14 0x28 r15 0x18 rip 0xffffffff81d29a55 memcpy+0x15 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff80001d3ffd68 ss 0x10 memcpy+0x15: repe movsq (%rsi),%es:(%rdi) ddb> show proc PROC (syz-fuzzer) pid=81072 stat=onproc flags process=2 proc=4000000 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff58c0,0xffff8000ffff89f8 process=0xffff80001d39b0f8 user=0xffff80001d3fb000, vmspace=0xfffffd806bc0acc0 estcpu=0, cpticks=0, pctcpu=0.12 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 4663 112021 14355 0 3 0x80 nanosleep syz-executor.1 4663 258783 14355 0 3 0x4000080 nanosleep syz-executor.1 4663 198761 14355 0 3 0x4000080 fsleep syz-executor.1 85578 490741 0 0 3 0x14200 acct acct 35284 514303 0 0 3 0x14200 bored sosplice 93782 402407 3044 0 3 0x82 piperd syz-executor.0 14355 389979 3044 0 3 0x82 nanosleep syz-executor.1 3044 1159 41724 0 3 0x82 thrsleep syz-fuzzer 3044 518929 41724 0 2 0x4000002 syz-fuzzer 3044 319265 41724 0 2 0x4000002 syz-fuzzer 3044 523697 41724 0 3 0x4000082 thrsleep syz-fuzzer 3044 356 41724 0 3 0x4000082 kqread syz-fuzzer * 3044 81072 41724 0 7 0x4000002 syz-fuzzer 3044 50345 41724 0 3 0x4000082 thrsleep syz-fuzzer 3044 98737 41724 0 3 0x4000082 thrsleep syz-fuzzer 41724 20626 51592 0 3 0x10008a pause ksh 51592 204936 71945 0 3 0x92 select sshd 10288 484644 1 0 3 0x100083 ttyin getty 71945 461404 1 0 3 0x80 select sshd 43085 381404 42136 73 3 0x100090 kqread syslogd 42136 300043 1 0 3 0x100082 netio syslogd 41472 365742 1 77 3 0x100090 poll dhclient 86420 94332 1 0 3 0x80 poll dhclient 87674 275822 0 0 3 0x14200 pgzero zerothread 37054 77123 0 0 3 0x14200 aiodoned aiodoned 4571 350084 0 0 3 0x14200 syncer update 59211 28450 0 0 3 0x14200 cleaner cleaner 95571 422454 0 0 3 0x14200 reaper reaper 70948 222680 0 0 3 0x14200 pgdaemon pagedaemon 76735 299226 0 0 3 0x14200 bored crynlk 15936 336178 0 0 3 0x14200 bored crypto 51438 268095 0 0 3 0x40014200 acpi0 acpi0 48397 459105 0 0 3 0x14200 bored softnet 66878 322708 0 0 3 0x14200 bored systqmp 93136 372942 0 0 3 0x14200 bored systq 27247 437775 0 0 3 0x40014200 bored softclock 570 192353 0 0 3 0x40014200 idle0 37411 394271 0 0 3 0x14200 bored smr 1 493928 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9496 6343K 6857K 78643K 11013 0 pcb 13 8K 8K 78643K 44 0 rtable 114 3K 3K 78643K 266 0 ifaddr 69 13K 14K 78643K 87 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 25 0 iov 0 0K 16K 78643K 307 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1357 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 86 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 5 13K 25K 78643K 1688 0 sigio 0 0K 0K 78643K 6 0 proc 49 38K 63K 78643K 395 0 subproc 32 2K 2K 78643K 36 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 19 0 in_multi 46 2K 2K 78643K 55 0 ether_multi 1 0K 0K 78643K 3 0 mrt 0 0K 0K 78643K 5 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 1K 78643K 206 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 108 37K 37K 78643K 3374 0 UVM aobj 55 5K 5K 78643K 56 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 28 0 NDP 11 0K 0K 78643K 18 0 temp 127 3014K 3078K 78643K 24336 0 kqueue 3 4K 18K 78643K 24 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 7 0 0 1 0 1 1 0 8 0 rtpcb 80 54 0 52 1 0 1 1 0 8 0 rtentry 112 52 0 5 2 0 2 2 0 8 0 unpcb 120 839 0 831 1 0 1 1 0 8 0 syncache 264 6 0 6 2 1 1 1 0 8 1 sackhl 24 2 0 2 2 2 0 1 0 8 0 tcpqe 32 127 0 127 2 1 1 1 0 8 1 tcpcb 544 158 0 154 4 1 3 3 0 8 2 inpcb 280 382 0 375 5 1 4 4 0 8 3 rttmr 72 2 0 2 1 0 1 1 0 8 1 nd6 48 4 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 227 0 5 15 0 15 15 0 8 0 art_table 32 228 0 5 2 0 2 2 0 8 0 art_node 16 51 0 8 1 0 1 1 0 8 0 sysvmsgpl 40 32 0 24 1 0 1 1 0 8 0 semapl 112 84 0 74 1 0 1 1 0 8 0 shmpl 112 54 0 1 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3275 0 1876 46 0 46 46 0 8 0 ffsino 240 3275 0 1876 83 0 83 83 0 8 0 nchpl 144 5507 0 3896 60 0 60 60 0 8 0 uvmvnodes 72 3416 0 0 63 0 63 63 0 8 0 vnodes 208 3416 0 0 180 0 180 180 0 8 0 namei 1024 12928 0 12928 1 0 1 1 0 8 1 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 528 1 0 0 1 0 1 1 0 8 0 scxspl 192 15787 0 15787 1 0 1 1 0 8 1 plimitpl 152 35 0 28 1 0 1 1 0 8 0 sigapl 432 1859 0 1846 2 0 2 2 0 8 0 futexpl 56 9210 0 9209 1 0 1 1 0 8 0 knotepl 112 76 0 57 1 0 1 1 0 8 0 kqueuepl 104 37 0 35 1 0 1 1 0 8 0 pipelkpl 16 142 0 132 1 0 1 1 0 8 0 pipepl 120 284 0 265 1 0 1 1 0 8 0 fdescpl 432 1860 0 1846 2 0 2 2 0 8 0 filepl 120 5502 0 5406 5 0 5 5 0 8 2 lockfpl 104 60 0 59 1 0 1 1 0 8 0 lockfspl 48 22 0 21 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 21 0 11 1 0 1 1 0 8 0 ucredpl 96 281 0 274 2 0 2 2 0 8 1 zombiepl 144 1846 0 1846 1 0 1 1 0 8 1 processpl 864 1876 0 1846 4 0 4 4 0 8 0 procpl 632 2668 0 2629 4 0 4 4 0 8 0 sosppl 128 12 0 12 2 1 1 1 0 8 1 sockpl 400 1276 0 1259 9 2 7 7 0 8 5 mcl64k 65536 27 0 27 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl12k 12288 6 0 6 2 1 1 1 0 8 1 mcl9k 9216 3 0 3 2 1 1 1 0 8 1 mcl8k 8192 6 0 6 1 0 1 1 0 8 1 mcl4k 4096 29 0 29 4 3 1 1 0 8 1 mcl2k 2048 65840 0 65788 17 9 8 15 0 8 1 mtagpl 80 8 0 2 2 1 1 1 0 8 0 mbufpl 256 111640 0 111512 14 5 9 11 0 8 0 bufpl 280 8404 0 2220 443 0 443 443 0 8 0 anonpl 16 80185 0 64620 65 1 64 64 0 107 0 amapchunkpl 152 4518 0 4387 19 13 6 19 0 158 0 amappl16 192 4666 0 3809 44 0 44 44 0 8 0 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 26 0 24 1 0 1 1 0 8 0 amappl13 168 820 0 819 1 0 1 1 0 8 0 amappl12 160 4 0 4 1 1 0 1 0 8 0 amappl11 152 48 0 37 1 0 1 1 0 8 0 amappl10 144 14 0 11 1 0 1 1 0 8 0 amappl9 136 557 0 554 1 0 1 1 0 8 0 amappl8 128 103 0 84 1 0 1 1 0 8 0 amappl7 120 93 0 80 1 0 1 1 0 8 0 amappl6 112 60 0 54 1 0 1 1 0 8 0 amappl5 104 142 0 132 1 0 1 1 0 8 0 amappl4 96 1601 0 1573 1 0 1 1 0 8 0 amappl3 88 129 0 122 1 0 1 1 0 8 0 amappl2 80 6994 0 6924 3 1 2 3 0 8 0 amappl1 72 26404 0 25977 26 16 10 20 0 8 0 amappl 80 2901 0 2858 2 0 2 2 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 55 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1861 0 1846 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1861 0 1846 1 0 1 1 0 8 0 vmmpekpl 168 10308 0 10287 2 0 2 2 0 8 0 vmmpepl 168 180678 0 178721 116 25 91 103 0 357 0 vmsppl 272 1860 0 1846 3 1 2 2 0 8 1 pdppl 4096 3728 0 3693 6 1 5 6 0 8 0 pvpl 32 292743 0 274166 155 0 155 155 0 265 2 pmappl 200 1860 0 1846 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 165 0 24 5 0 5 5 0 8 0