uvm_fault(0xfffffd803f014000, 0x24, 0, 1) -> e kernel: page fault trap, code=0 Stopped at frag6_input+0x762: movl 0x24(%rax),%r14d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd803f014000, 0x24, 0, 1) -> e frag6_input(ffff80001488d9c8,ffff80001488d9d4,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 end trace frame: 0xffff80001488d850, count: 0 ddb> trace frag6_input(ffff80001488d9c8,ffff80001488d9d4,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 ip_deliver(ffff80001488d9c8,ffff80001488d9d4,2c,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:665 ip6_input_if(ffff80001488d9c8,ffff80001488d9d4,29,0,ffff80000069c000) at ip6_input_if+0x153a ip6_ours sys/netinet6/ip6_input.c:518 [inline] ip6_input_if(ffff80001488d9c8,ffff80001488d9d4,29,0,ffff80000069c000) at ip6_input_if+0x153a sys/netinet6/ip6_input.c:340 ipv6_input(ffff80000069c000,fffffd803f030100) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000069c000,fffffd803f030100,18) at if_input_local+0x121 sys/net/if.c:783 ip6_output(fffffd803f030300,ffff800000ac8980,fffffd8037015d90,0,0,fffffd8037015d20) at ip6_output+0xd35 rip6_output(fffffd803f030300,fffffd8037016000,ffff80001488dd38,0) at rip6_output+0x4d7 sys/netinet6/raw_ip6.c:481 rip6_usrreq(fffffd8037016000,9,fffffd803f030300,0,0,ffff8000ffff8ed8) at rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 sosend(fffffd8037016000,0,ffff80001488df68,0,0,0) at sosend+0x660 sys/kern/uipc_socket.c:524 dofilewritev(ffff8000ffff8ed8,3,ffff80001488df68,0,ffff80001488e070) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff8000ffff8ed8,ffff80001488e008,ffff80001488e070) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff80001488e0d0) at syscall+0x508 Xsyscall(6,0,c,0,3,68e2c176010) at Xsyscall+0x128 end of kernel end trace frame: 0x6905f7d6b90, count: -13 ddb> show registers rdi 0 rsi 0 rbp 0xffff80001488d7d0 rbx 0x600 rdx 0 rcx 0 rax 0 r8 0x30 r9 0 r10 0xb26f96d96434ac0e r11 0xb74909f3b343b9ee r12 0 r13 0xfffffd8039234f30 r14 0xfffffd8039234f40 r15 0xfffffd80047b7854 rip 0xffffffff811a0f62 frag6_input+0x762 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff80001488d710 ss 0x10 frag6_input+0x762: movl 0x24(%rax),%r14d ddb> show proc PROC (syz-executor.0) pid=29738 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8770,0xffffffff8259f160 process=0xffff8000ffff70f0 user=0xffff800014889000, vmspace=0xfffffd803f014000 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 68034 78435 90 0 2 0 syz-executor.0 *68034 29738 90 0 7 0x4000000 syz-executor.0 90 87679 61280 0 3 0x82 nanosleep syz-executor.0 28429 297488 61280 0 3 0x82 nanosleep syz-executor.1 51661 467496 0 0 3 0x14200 acct acct 96696 483064 1 0 3 0x100083 ttyin getty 72578 71305 0 0 3 0x14200 bored sosplice 61280 140830 25843 0 3 0x82 thrsleep syz-fuzzer 61280 246726 25843 0 3 0x4000082 thrsleep syz-fuzzer 61280 406083 25843 0 3 0x4000082 thrsleep syz-fuzzer 61280 420739 25843 0 3 0x4000082 thrsleep syz-fuzzer 61280 501228 25843 0 3 0x4000082 kqread syz-fuzzer 61280 207512 25843 0 3 0x4000082 thrsleep syz-fuzzer 61280 74656 25843 0 3 0x4000082 thrsleep syz-fuzzer 25843 240098 21728 0 3 0x10008a pause ksh 21728 128957 56499 0 3 0x92 select sshd 56499 163957 1 0 3 0x80 select sshd 5356 114299 45993 73 3 0x100090 kqread syslogd 45993 470557 1 0 3 0x100082 netio syslogd 2810 82388 0 0 2 0x14200 zerothread 553 5959 0 0 3 0x14200 aiodoned aiodoned 54408 194632 0 0 3 0x14200 syncer update 54036 147747 0 0 3 0x14200 cleaner cleaner 5622 487360 0 0 3 0x14200 reaper reaper 42202 248427 0 0 3 0x14200 pgdaemon pagedaemon 9936 215809 0 0 3 0x14200 bored crynlk 42969 50944 0 0 3 0x14200 bored crypto 79124 29553 0 0 3 0x40014200 acpi0 acpi0 9471 75384 0 0 3 0x14200 bored softnet 35990 61384 0 0 3 0x14200 bored systqmp 17585 288486 0 0 3 0x14200 bored systq 9973 51656 0 0 3 0x40014200 bored softclock 54146 320762 0 0 3 0x40014200 idle0 5233 86337 0 0 3 0x14200 bored smr 1 367919 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 Kern Lim devbuf 9553 6310K 14605K 78643K 22305 0 0 pcb 14 8K 8K 78643K 517 0 0 rtable 111 4K 4K 78643K 891 0 0 ifaddr 74 16K 16K 78643K 477 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 231 0 0 iov 0 0K 32K 78643K 514 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1212 76K 77K 78643K 5412 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 52 0 0 VM map 2 0K 0K 78643K 11 0 0 sem 12 0K 0K 78643K 511 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 4510 0 0 sigio 0 0K 0K 78643K 63 0 0 proc 42 30K 54K 78643K 1294 0 0 subproc 32 2K 2K 78643K 238 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 355 0 0 in_multi 33 2K 2K 78643K 271 0 0 ether_multi 1 0K 0K 78643K 16 0 0 mrt 0 0K 0K 78643K 10 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 96 424K 424K 78643K 96 0 0 exec 0 0K 1K 78643K 795 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 88 20K 30K 78643K 11601 0 0 UVM aobj 130 4K 4K 78643K 146 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 2 0K 0K 78643K 451 0 0 NDP 17 0K 0K 78643K 146 0 0 temp 205 3536K 4176K 78643K 93899 0 0 kqueue 0 0K 0K 78643K 25 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 31 0 25 1 0 1 1 0 8 0 rtpcb 80 201 0 201 11 10 1 1 0 8 1 rtentry 112 182 0 138 2 0 2 2 0 8 0 unpcb 120 1539 0 1533 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 1848 0 1848 1 1 0 1 0 8 0 tcpcb 544 764 0 759 1 0 1 1 0 8 0 ipq 40 8 0 8 5 5 0 1 0 8 0 ipqe 40 17 0 17 5 5 0 1 0 8 0 inpcb 280 2318 0 2313 3 2 1 2 0 8 0 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 48 1 0 0 1 0 1 1 0 8 0 nd6 48 42 0 36 1 0 1 1 0 8 0 pkpcb 40 28 0 28 8 8 0 1 0 8 0 ppxss 1128 67 0 67 12 12 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 744 0 553 13 1 12 13 0 8 0 art_table 32 745 0 553 2 0 2 2 0 8 0 art_node 16 177 0 137 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 10 1 0 1 1 0 8 0 semapl 112 507 0 497 1 0 1 1 0 8 0 shmpl 112 144 0 16 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 8458 0 7037 48 1 47 47 0 8 0 ffsino 240 8458 0 7037 85 0 85 85 0 8 0 nchpl 144 14965 0 13341 62 0 62 62 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 200 5926 0 0 312 0 312 312 0 8 0 namei 1024 48364 0 48364 3 2 1 1 0 8 1 vmpool 520 9 0 9 5 5 0 1 0 8 0 scsiplug 64 14 0 14 7 7 0 1 0 8 0 scxspl 192 46033 0 46033 19 18 1 7 0 8 1 plimitpl 152 407 0 401 1 0 1 1 0 8 0 sigapl 432 4648 0 4637 2 0 2 2 0 8 0 futexpl 56 73790 0 73790 3 2 1 1 0 8 1 knotepl 112 942 0 923 1 0 1 1 0 8 0 kqueuepl 104 1000 0 998 1 0 1 1 0 8 0 pipepl 112 2370 0 2351 3 2 1 2 0 8 0 fdescpl 424 4649 0 4637 2 0 2 2 0 8 0 filepl 120 27687 0 27602 17 13 4 4 0 8 1 lockfpl 104 1482 0 1482 4 3 1 1 0 8 1 lockfspl 48 492 0 492 4 3 1 1 0 8 1 sessionpl 112 32 0 24 1 0 1 1 0 8 0 pgrppl 48 70 0 62 1 0 1 1 0 8 0 ucredpl 96 5469 0 5462 1 0 1 1 0 8 0 zombiepl 144 4637 0 4636 2 1 1 1 0 8 0 processpl 864 4665 0 4636 4 0 4 4 0 8 0 procpl 632 10196 0 10160 4 0 4 4 0 8 0 sosppl 128 40 0 40 12 12 0 1 0 8 0 sockpl 384 4113 0 4102 6 4 2 3 0 8 0 mcl64k 65536 470 0 470 57 56 1 29 0 8 1 mcl16k 16384 20 0 20 15 15 0 1 0 8 0 mcl12k 12288 71 0 71 12 11 1 1 0 8 1 mcl9k 9216 53 0 53 21 20 1 1 0 8 1 mcl8k 8192 72 0 72 14 13 1 1 0 8 1 mcl4k 4096 240 0 240 6 5 1 1 0 8 1 mcl2k2 2112 21 0 21 11 10 1 1 0 8 1 mcl2k 2048 66558 0 66513 18 12 6 11 0 8 0 mtagpl 80 115 0 105 2 1 1 1 0 8 0 mbufpl 256 126091 0 125993 35 27 8 21 0 8 0 bufpl 256 18619 0 13021 351 0 351 351 0 8 0 anonpl 16 460940 0 450759 169 115 54 67 0 62 0 amapchunkpl 152 20899 0 20804 39 34 5 9 0 158 0 amappl16 192 26503 0 25806 193 156 37 48 0 8 1 amappl15 184 468 0 467 3 2 1 1 0 8 0 amappl14 176 761 0 755 1 0 1 1 0 8 0 amappl13 168 901 0 901 3 3 0 1 0 8 0 amappl12 160 23 0 20 1 0 1 1 0 8 0 amappl11 152 730 0 726 1 0 1 1 0 8 0 amappl10 144 210 0 208 12 11 1 1 0 8 0 amappl9 136 1461 0 1458 1 0 1 1 0 8 0 amappl8 128 1073 0 1046 1 0 1 1 0 8 0 amappl7 120 218 0 210 1 0 1 1 0 8 0 amappl6 112 704 0 698 1 0 1 1 0 8 0 amappl5 104 369 0 361 1 0 1 1 0 8 0 amappl4 96 4919 0 4894 1 0 1 1 0 8 0 amappl3 88 966 0 956 1 0 1 1 0 8 0 amappl2 80 36958 0 36899 3 1 2 3 0 8 0 amappl1 72 90785 0 90411 28 19 9 19 0 8 0 amappl 80 10679 0 10649 1 0 1 1 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 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 145 0 16 3 0 3 3 0 8 0 uaddrrnd 24 4658 0 4637 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4658 0 4637 1 0 1 1 0 8 0 vmmpekpl 168 31701 0 31677 2 0 2 2 0 8 0 vmmpepl 168 545640 0 543982 265 168 97 102 0 357 18 vmsppl 272 4648 0 4637 2 1 1 2 0 8 0 pdppl 4096 9322 0 9292 6 1 5 6 0 8 0 pvpl 32 1130669 0 1117565 312 170 142 167 0 265 14 pmappl 200 4657 0 4646 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 612 0 135 15 1 14 15 0 8 0