uvm_fault(0xfffffd806bc0aaa0, 0x0, 0, 2) -> 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(0xfffffd806bc0aaa0, 0x0, 0, 2) -> e memcpy() at memcpy+0x15 end trace frame: 0xffff80001d7783f0, count: 0 ddb> trace memcpy() at memcpy+0x15 sbappendstream(fffffd805dac4198,fffffd805dac4290,fffffd805867f100) at sbappendstream+0x105 sys/kern/uipc_socket2.c:665 tcp_usrreq(fffffd805dac4198,9,fffffd805867f100,0,0,ffff80001d7a7010) at tcp_usrreq+0x225 sys/netinet/tcp_usrreq.c:323 sosend(fffffd805dac4198,0,ffff80001d778648,0,0,80) at sosend+0x669 sys/kern/uipc_socket.c:549 dofilewritev(ffff80001d7a7010,4,ffff80001d778648,0,ffff80001d778730) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff80001d7a7010,ffff80001d7786e0,ffff80001d778730) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff80001d7787b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe41b0, count: -8 ddb> show registers rdi 0 rsi 0xfffffd806a746800 rbp 0xffff80001d778390 rbx 0x1 rdx 0x174 rcx 0x2e rax 0 r8 0xffffffff81d1eb64 sbappendstream+0x64 r9 0x5 r10 0x18d783bcb9ceddc1 r11 0 r12 0xfffffd805867f100 r13 0xfffffd805867f200 r14 0x1 r15 0xfffffd805dac4290 rip 0xffffffff8152e915 memcpy+0x15 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80001d778318 ss 0x10 memcpy+0x15: repe movsq (%rsi),%es:(%rdi) ddb> show proc PROC (sshd) pid=421966 stat=onproc flags process=12 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d7a7760,0xffff80001d7a7500 process=0xffff8000ffff8ae0 user=0xffff80001d773000, vmspace=0xfffffd806bc0aaa0 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 36303 230832 7323 0 2 0x2 syz-executor.0 52900 191279 1 0 3 0x100083 ttyin getty 42234 353812 0 0 3 0x14200 acct acct 55322 272888 0 0 3 0x14200 bored sosplice 45393 396826 7323 0 2 0x2 syz-executor.1 7323 181724 71211 0 3 0x82 thrsleep syz-fuzzer 7323 131046 71211 0 2 0x4000002 syz-fuzzer 7323 385860 71211 0 3 0x4000082 thrsleep syz-fuzzer 7323 350702 71211 0 3 0x4000082 thrsleep syz-fuzzer 7323 81832 71211 0 2 0x4000002 syz-fuzzer 7323 148852 71211 0 3 0x4000082 thrsleep syz-fuzzer 7323 77967 71211 0 3 0x4000082 thrsleep syz-fuzzer 71211 478254 60751 0 3 0x10008a pause ksh *60751 421966 16784 0 7 0x12 sshd 16784 229323 1 0 3 0x80 select sshd 16360 141733 63302 73 3 0x100090 kqread syslogd 63302 213674 1 0 3 0x100082 netio syslogd 23315 329000 1 77 3 0x100090 poll dhclient 85239 362054 1 0 3 0x80 poll dhclient 90185 354439 0 0 3 0x14200 bored smr 71979 7237 0 0 3 0x14200 pgzero zerothread 7329 404830 0 0 3 0x14200 aiodoned aiodoned 90796 240421 0 0 3 0x14200 syncer update 37235 134537 0 0 3 0x14200 cleaner cleaner 86957 116752 0 0 3 0x14200 reaper reaper 58515 274228 0 0 3 0x14200 pgdaemon pagedaemon 98004 192949 0 0 3 0x14200 bored crynlk 48614 320327 0 0 3 0x14200 bored crypto 61604 503717 0 0 3 0x40014200 acpi0 acpi0 26219 275783 0 0 3 0x14200 bored softnet 33730 388731 0 0 3 0x14200 bored systqmp 769 59217 0 0 3 0x14200 bored systq 86930 32344 0 0 3 0x40014200 bored softclock 90357 9674 0 0 3 0x40014200 idle0 1 160894 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 9517 6350K 6867K 78643K 12342 0 pcb 13 8K 8K 78643K 449 0 rtable 77 3K 4K 78643K 628 0 ifaddr 90 18K 19K 78643K 333 0 counters 21 16K 17K 78643K 65 0 ioctlops 0 0K 2K 78643K 44 0 iov 0 0K 12K 78643K 111 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1770 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 10 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 108 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 792 0 sigio 0 0K 0K 78643K 16 0 proc 51 38K 55K 78643K 508 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 82 0 in_multi 84 3K 4K 78643K 204 0 ether_multi 1 0K 0K 78643K 32 0 mrt 0 0K 0K 78643K 12 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 279 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 135 72K 92K 78643K 2760 0 UVM aobj 21 2K 2K 78643K 27 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 122 0 NDP 14 0K 0K 78643K 67 0 temp 140 3038K 3103K 78643K 26330 0 kqueue 3 4K 18K 78643K 64 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 12 0 6 1 0 1 1 0 8 0 rtpcb 80 79 0 77 1 0 1 1 0 8 0 rtentry 112 82 0 55 2 0 2 2 0 8 0 unpcb 120 377 0 367 1 0 1 1 0 8 0 syncache 264 13 0 13 6 5 1 1 0 8 1 tcpqe 32 106 0 106 1 1 0 1 0 8 0 tcpcb 544 309 0 305 1 0 1 1 0 8 0 ipq 40 3 0 3 2 1 1 1 0 8 1 ipqe 40 92 0 92 2 1 1 1 0 8 1 inpcb 280 1319 0 1312 6 4 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 13 0 12 1 0 1 1 0 8 0 pkpcb 40 5 0 5 2 2 0 1 0 8 0 ppxss 1128 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 399 0 272 15 3 12 14 0 8 2 art_table 32 401 0 272 2 0 2 2 0 8 0 art_node 16 81 0 58 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 12 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 98 0 88 1 0 1 1 0 8 0 shmpl 112 25 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2576 0 1181 88 0 88 88 0 8 0 ffsino 240 2576 0 1181 83 0 83 83 0 8 0 nchpl 144 4230 0 2641 60 0 60 60 0 8 0 uvmvnodes 72 3015 0 0 55 0 55 55 0 8 0 vnodes 208 3015 0 0 159 0 159 159 0 8 0 namei 1024 11645 0 11645 2 1 1 1 0 8 1 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 528 7 0 1 1 0 1 1 0 8 0 scsiplug 64 3 0 3 2 1 1 1 0 8 1 scxspl 192 11892 0 11892 1 0 1 1 0 8 1 plimitpl 152 113 0 106 1 0 1 1 0 8 0 sigapl 424 979 0 950 4 0 4 4 0 8 0 futexpl 56 17722 0 17722 3 2 1 1 0 8 1 knotepl 112 145 0 126 1 0 1 1 0 8 0 kqueuepl 144 143 0 139 1 0 1 1 0 8 0 pipelkpl 16 182 0 172 1 0 1 1 0 8 0 pipepl 120 364 0 345 1 0 1 1 0 8 0 fdescpl 432 963 0 950 2 0 2 2 0 8 0 filepl 120 6644 0 6549 4 0 4 4 0 8 1 lockfpl 104 222 0 221 1 0 1 1 0 8 0 lockfspl 48 91 0 90 1 0 1 1 0 8 0 sessionpl 112 20 0 10 1 0 1 1 0 8 0 pgrppl 48 32 0 22 1 0 1 1 0 8 0 ucredpl 96 650 0 643 1 0 1 1 0 8 0 zombiepl 144 950 0 950 1 0 1 1 0 8 1 processpl 920 979 0 950 4 0 4 4 0 8 0 procpl 624 1919 0 1884 4 0 4 4 0 8 0 sosppl 128 28 0 28 3 2 1 1 0 8 1 sockpl 400 1789 0 1770 8 4 4 4 0 8 0 mcl64k 65536 60 0 57 3 2 1 1 0 8 0 mcl16k 16384 11 0 11 3 3 0 1 0 8 0 mcl12k 12288 24 0 24 3 2 1 1 0 8 1 mcl9k 9216 5 0 5 2 1 1 1 0 8 1 mcl8k 8192 19 0 19 4 3 1 1 0 8 1 mcl4k 4096 82 0 82 3 2 1 1 0 8 1 mcl2k2 2112 7 0 7 5 4 1 1 0 8 1 mcl2k 2048 65443 0 65397 14 7 7 13 0 8 0 mtagpl 80 147 0 98 4 1 3 3 0 8 0 mbufpl 256 111561 0 111042 43 9 34 34 0 8 0 bufpl 280 5640 0 279 384 0 384 384 0 8 0 anonpl 16 117001 0 103219 93 23 70 72 0 107 13 amapchunkpl 152 6638 0 6511 33 14 19 20 0 158 11 amappl16 192 5345 0 4583 86 39 47 51 0 8 8 amappl15 184 374 0 372 1 0 1 1 0 8 0 amappl14 176 26 0 22 1 0 1 1 0 8 0 amappl13 168 32 0 30 1 0 1 1 0 8 0 amappl12 160 382 0 378 2 1 1 1 0 8 0 amappl11 152 378 0 369 1 0 1 1 0 8 0 amappl10 144 16 0 11 1 0 1 1 0 8 0 amappl9 136 370 0 368 1 0 1 1 0 8 0 amappl8 128 368 0 325 2 0 2 2 0 8 0 amappl7 120 124 0 110 1 0 1 1 0 8 0 amappl6 112 354 0 349 1 0 1 1 0 8 0 amappl5 104 583 0 571 1 0 1 1 0 8 0 amappl4 96 790 0 762 1 0 1 1 0 8 0 amappl3 88 127 0 122 1 0 1 1 0 8 0 amappl2 80 7204 0 7147 2 0 2 2 0 8 0 amappl1 72 26703 0 26311 24 15 9 17 0 8 0 amappl 80 2213 0 2171 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 26 0 6 1 0 1 1 0 8 0 uaddrrnd 24 970 0 951 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 970 0 951 1 0 1 1 0 8 0 vmmpekpl 168 9500 0 9468 2 0 2 2 0 8 0 vmmpepl 168 120276 0 118545 144 34 110 110 0 357 29 vmsppl 272 969 0 951 4 2 2 2 0 8 0 pdppl 4096 1946 0 1908 7 1 6 6 0 8 0 pvpl 32 310691 0 293995 196 26 170 173 0 265 31 pmappl 200 969 0 951 2 0 2 2 0 8 1 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 289 0 39 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace memcpy() at memcpy+0x15 sbappendstream(fffffd805dac4198,fffffd805dac4290,fffffd805867f100) at sbappendstream+0x105 sys/kern/uipc_socket2.c:665 tcp_usrreq(fffffd805dac4198,9,fffffd805867f100,0,0,ffff80001d7a7010) at tcp_usrreq+0x225 sys/netinet/tcp_usrreq.c:323 sosend(fffffd805dac4198,0,ffff80001d778648,0,0,80) at sosend+0x669 sys/kern/uipc_socket.c:549 dofilewritev(ffff80001d7a7010,4,ffff80001d778648,0,ffff80001d778730) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff80001d7a7010,ffff80001d7786e0,ffff80001d778730) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff80001d7787b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe41b0, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace memcpy() at memcpy+0x15 sbappendstream(fffffd805dac4198,fffffd805dac4290,fffffd805867f100) at sbappendstream+0x105 sys/kern/uipc_socket2.c:665 tcp_usrreq(fffffd805dac4198,9,fffffd805867f100,0,0,ffff80001d7a7010) at tcp_usrreq+0x225 sys/netinet/tcp_usrreq.c:323 sosend(fffffd805dac4198,0,ffff80001d778648,0,0,80) at sosend+0x669 sys/kern/uipc_socket.c:549 dofilewritev(ffff80001d7a7010,4,ffff80001d778648,0,ffff80001d778730) at dofilewritev+0x1ab sys/kern/sys_generic.c:365 sys_write(ffff80001d7a7010,ffff80001d7786e0,ffff80001d778730) at sys_write+0x83 sys/kern/sys_generic.c:285 syscall(ffff80001d7787b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe41b0, count: -8