uvm_fault(0xfffffd806e7b95c8, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at memcpy+0x15: repe movsq (%rsi),%es:(%rdi) ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xfffffd806e7b95c8, 0x0, 0, 1) -> e memcpy() at memcpy+0x15 end trace frame: 0xffff800020afba60, count: 0 ddb{0}> trace memcpy() at memcpy+0x15 tcp_usrreq(fffffd806e975a88,9,fffffd807c41f300,0,0,ffff800020ad18c0) at tcp_usrreq+0xa45 sosend(fffffd806e975a88,0,ffff800020afbc08,0,0,80) at sosend+0x645 sys/kern/uipc_socket.c:524 dofilewritev(ffff800020ad18c0,4,ffff800020afbc08,0,ffff800020afbcf0) at dofilewritev+0x1b7 sys/kern/sys_generic.c:364 sys_write(ffff800020ad18c0,ffff800020afbca0,ffff800020afbcf0) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff800020afbd70) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800020afbd70) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd8b90, count: -7 ddb{0}> show registers rdi 0xfffffd80679322b0 rsi 0 rbp 0xffff800020afb9b0 rbx 0x28 rdx 0x28 rcx 0x5 rax 0xffffffff81fd723b tcp_output+0x173b r8 0xffffffff81fd670f tcp_output+0xc0f r9 0x5 r10 0x64769dfb9e2e8e4f r11 0xfffffd80679322b0 r12 0x580 r13 0xfffffd8067932200 r14 0x28 r15 0xfffffd807c41f400 rip 0xffffffff8182ef45 memcpy+0x15 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800020afb828 ss 0x10 memcpy+0x15: repe movsq (%rsi),%es:(%rdi) ddb{0}> show proc PROC (sshd) pid=340966 stat=onproc flags process=12 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ad0288,0xffff800020ad0ef0 process=0xffff800020a9bc50 user=0xffff800020af6000, vmspace=0xfffffd806e7b95c8 estcpu=0, cpticks=1, pctcpu=0.6 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 35975 493910 14948 0 2 0 syz-executor.0 35975 377688 14948 0 3 0x4000080 fsleep syz-executor.0 14948 169364 92923 0 2 0x482 syz-executor.0 91317 193424 0 0 3 0x14200 bored sosplice 87844 197269 0 0 3 0x14200 acct acct 75263 432341 92923 0 2 0x2 syz-executor.1 92923 170661 11147 0 3 0x82 thrsleep syz-fuzzer 92923 317238 11147 0 3 0x4000082 nanosleep syz-fuzzer 92923 142091 11147 0 3 0x4000082 thrsleep syz-fuzzer 92923 482321 11147 0 7 0x4000002 syz-fuzzer 92923 304638 11147 0 3 0x4000082 thrsleep syz-fuzzer 92923 387394 11147 0 3 0x4000082 nanosleep syz-fuzzer 92923 142985 11147 0 3 0x4000082 thrsleep syz-fuzzer 92923 314224 11147 0 3 0x4000082 kqread syz-fuzzer 92923 61489 11147 0 3 0x4000082 thrsleep syz-fuzzer 92923 231040 11147 0 3 0x4000082 thrsleep syz-fuzzer 11147 137481 53788 0 3 0x10008a pause ksh *53788 340966 44125 0 7 0x12 sshd 21627 303569 1 0 3 0x100083 ttyin getty 44125 352226 1 0 3 0x80 select sshd 37100 255120 86563 74 3 0x100092 bpf pflogd 86563 130899 1 0 3 0x80 netio pflogd 36938 277867 51299 73 3 0x100090 kqread syslogd 51299 349814 1 0 3 0x100082 netio syslogd 29531 389035 1 77 3 0x100090 poll dhclient 5308 112952 1 0 3 0x80 poll dhclient 50046 434322 0 0 3 0x14200 pgzero zerothread 73958 413410 0 0 3 0x14200 aiodoned aiodoned 54159 411332 0 0 3 0x14200 syncer update 61821 61091 0 0 3 0x14200 cleaner cleaner 34628 139999 0 0 3 0x14200 reaper reaper 56048 397539 0 0 3 0x14200 pgdaemon pagedaemon 73622 394367 0 0 3 0x14200 bored crynlk 567 372239 0 0 3 0x14200 bored crypto 34777 62015 0 0 3 0x40014200 acpi0 acpi0 38029 445054 0 0 3 0x40014200 idle1 61610 100377 0 0 3 0x14200 bored softnet 73056 7749 0 0 3 0x14200 bored systqmp 15909 200751 0 0 3 0x14200 bored systq 14563 489622 0 0 3 0x40014200 bored softclock 34541 346995 0 0 3 0x40014200 idle0 30131 286549 0 0 3 0x14200 bored smr 1 337755 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 53788 (sshd) thread 0xffff800020ad18c0 (340966) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8265a3c0) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 pageflttrap+0x6f sys/arch/amd64/amd64/trap.c:162 #2 kerntrap+0xec sys/arch/amd64/amd64/trap.c:287 #3 alltraps_kern_meltdown+0x7b #4 memcpy+0x15 #5 tcp_usrreq+0xa45 #6 sosend+0x645 sys/kern/uipc_socket.c:524 #7 dofilewritev+0x1b7 sys/kern/sys_generic.c:364 #8 sys_write+0x83 sys/kern/sys_generic.c:284 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #10 Xsyscall+0x128 exclusive rwlock netlock r = 0 (0xffffffff824645b8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 solock+0x5a sys/kern/uipc_socket2.c:282 #2 sosend+0x51b sys/kern/uipc_socket.c:512 #3 dofilewritev+0x1b7 sys/kern/sys_generic.c:364 #4 sys_write+0x83 sys/kern/sys_generic.c:284 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #6 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9532 6546K 6984K 78643K 11385 0 pcb 13 8K 9K 78643K 505 0 rtable 113 4K 4K 78643K 401 0 ifaddr 83 17K 17K 78643K 170 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1486 0 iov 0 0K 16K 78643K 62 0 mount 1 1K 1K 78643K 1 0 vnodes 1225 77K 77K 78643K 1507 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 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 105 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 5 13K 25K 78643K 344 0 proc 65 75K 95K 78643K 530 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 21 0 in_multi 77 3K 3K 78643K 108 0 ether_multi 1 0K 0K 78643K 2 0 mrt 0 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 78 344K 344K 78643K 78 0 exec 0 0K 1K 78643K 259 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 120 38K 47K 78643K 2180 0 UVM aobj 74 3K 3K 78643K 76 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 64 0 NDP 12 0K 0K 78643K 34 0 temp 137 3019K 3085K 78643K 15342 0 kqueue 0 0K 0K 78643K 4 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 12 0 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 47 0 45 1 0 1 1 0 8 0 rtentry 112 73 0 28 2 0 2 2 0 8 0 unpcb 120 236 0 226 1 0 1 1 0 8 0 syncache 264 10 0 10 3 3 0 1 0 8 0 tcpqe 32 973 0 973 4 4 0 3 0 8 0 tcpcb 544 152 0 148 2 0 2 2 0 8 1 inpcb 280 1296 0 1288 3 0 3 3 0 8 2 nd6 48 9 0 5 1 0 1 1 0 8 0 ppxss 1128 10 0 10 2 1 1 1 0 8 1 pffrag 232 12 0 12 3 2 1 1 0 482 1 pffrnode 88 12 0 12 3 2 1 1 0 8 1 pffrent 40 497 0 497 3 2 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 50 0 7 1 0 1 1 0 8 0 pfstkey 112 50 0 7 2 0 2 2 0 8 0 pfstate 328 50 0 7 4 0 4 4 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 331 0 112 14 0 14 14 0 8 0 art_table 32 332 0 112 2 0 2 2 0 8 0 art_node 16 72 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 33 0 14 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 103 0 93 1 0 1 1 0 8 0 shmpl 112 74 0 2 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1878 0 471 46 0 46 46 0 8 0 ffsino 272 1878 0 471 95 0 95 95 0 8 0 nchpl 144 2562 0 2101 61 41 20 61 0 8 0 uvmvnodes 72 2138 0 0 39 0 39 39 0 8 0 vnodes 208 2138 0 0 113 0 113 113 0 8 0 namei 1024 7424 0 7424 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 2 0 0 1 0 1 1 0 8 0 scxspl 192 7294 0 7294 8 7 1 6 0 8 1 plimitpl 152 44 0 36 1 0 1 1 0 8 0 sigapl 432 537 0 522 3 1 2 3 0 8 0 futexpl 56 8068 0 8067 1 0 1 1 0 8 0 knotepl 112 109 0 90 1 0 1 1 0 8 0 kqueuepl 104 72 0 70 1 0 1 1 0 8 0 pipepl 160 314 0 295 3 1 2 2 0 8 1 fdescpl 488 538 0 522 3 0 3 3 0 8 0 filepl 152 4326 0 4226 8 3 5 6 0 8 1 lockfpl 104 67 0 66 1 0 1 1 0 8 0 lockfspl 48 23 0 22 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 26 0 15 1 0 1 1 0 8 0 ucredpl 96 471 0 462 1 0 1 1 0 8 0 zombiepl 144 522 0 522 2 1 1 1 0 8 1 processpl 904 555 0 522 4 0 4 4 0 8 0 procpl 632 1286 0 1243 5 0 5 5 0 8 1 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 9 0 9 1 0 1 1 0 8 1 sockpl 384 1589 0 1568 7 2 5 5 0 8 1 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 347 0 0 43 0 43 43 0 8 0 mtagpl 80 14 0 0 1 0 1 1 0 8 0 mbufpl 256 539 0 0 32 0 32 32 0 8 0 bufpl 280 7040 0 1341 408 0 408 408 0 8 0 anonpl 16 89419 0 69467 107 10 97 97 0 125 15 amapchunkpl 152 3639 0 3482 11 3 8 11 0 158 0 amappl16 192 3231 0 2141 78 14 64 67 0 8 8 amappl15 184 290 0 284 1 0 1 1 0 8 0 amappl14 176 39 0 38 1 0 1 1 0 8 0 amappl12 160 11 0 7 1 0 1 1 0 8 0 amappl11 152 212 0 195 1 0 1 1 0 8 0 amappl10 144 17 0 13 1 0 1 1 0 8 0 amappl9 136 622 0 617 1 0 1 1 0 8 0 amappl8 128 151 0 125 2 0 2 2 0 8 0 amappl7 120 123 0 109 1 0 1 1 0 8 0 amappl6 112 210 0 202 1 0 1 1 0 8 0 amappl5 104 163 0 148 1 0 1 1 0 8 0 amappl4 96 796 0 764 2 1 1 2 0 8 0 amappl3 88 129 0 122 1 0 1 1 0 8 0 amappl2 80 3388 0 3312 3 1 2 3 0 8 0 amappl1 72 21976 0 21530 25 15 10 20 0 8 0 amappl 80 1590 0 1542 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 75 0 2 2 0 2 2 0 8 0 uaddrrnd 24 540 0 522 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 540 0 522 1 0 1 1 0 8 0 vmmpekpl 168 8162 0 8123 2 0 2 2 0 8 0 vmmpepl 168 75955 0 73681 164 25 139 140 0 357 37 vmsppl 368 539 0 522 2 0 2 2 0 8 0 pdppl 4096 1087 0 1046 7 1 6 6 0 8 0 pvpl 32 239585 0 216428 233 9 224 224 0 265 33 pmappl 232 539 0 522 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 214 0 5 6 0 6 6 0 8 0