uvm_fault(0xfffffd803f014660, 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(0xfffffd803f014660, 0x24, 0, 1) -> e frag6_input(ffff800015931fc8,ffff800015931fd4,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 end trace frame: 0xffff800015931e50, count: 0 ddb> trace frag6_input(ffff800015931fc8,ffff800015931fd4,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 ip_deliver(ffff800015931fc8,ffff800015931fd4,2c,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:665 ip6_input_if(ffff800015931fc8,ffff800015931fd4,29,0,ffff80000069c000) at ip6_input_if+0x153a ip6_ours sys/netinet6/ip6_input.c:518 [inline] ip6_input_if(ffff800015931fc8,ffff800015931fd4,29,0,ffff80000069c000) at ip6_input_if+0x153a sys/netinet6/ip6_input.c:340 ipv6_input(ffff80000069c000,fffffd8036fca400) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000069c000,fffffd8036fca400,18) at if_input_local+0x121 sys/net/if.c:783 ip6_output(fffffd8036fcaf00,ffff800000a91180,fffffd803da17a48,0,0,fffffd803da179d8) at ip6_output+0xd35 rip6_output(fffffd8036fcaf00,fffffd803da18480,ffff800015932338,0) at rip6_output+0x4d7 sys/netinet6/raw_ip6.c:481 rip6_usrreq(fffffd803da18480,9,fffffd8036fcaf00,0,0,ffff8000ffff3160) at rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 sosend(fffffd803da18480,0,ffff800015932568,0,0,0) at sosend+0x660 sys/kern/uipc_socket.c:524 dofilewritev(ffff8000ffff3160,5,ffff800015932568,0,ffff800015932670) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff8000ffff3160,ffff800015932608,ffff800015932670) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff8000159326d0) at syscall+0x508 Xsyscall(6,0,c,0,3,b09fbf46010) at Xsyscall+0x128 end of kernel end trace frame: 0xb0c3e1e8c20, count: -13 ddb> show registers rdi 0 rsi 0 rbp 0xffff800015931dd0 rbx 0x600 rdx 0 rcx 0 rax 0 r8 0x30 r9 0 r10 0xfb037c0ec979196c r11 0xdacd27897d95775f r12 0 r13 0xfffffd802c898ee8 r14 0xfffffd802c898ef8 r15 0xfffffd80047c0054 rip 0xffffffff818f50a2 frag6_input+0x762 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800015931d10 ss 0x10 frag6_input+0x762: movl 0x24(%rax),%r14d ddb> show proc PROC (syz-executor.1) pid=436892 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2508,0xffffffff8257f9f0 process=0xffff8000ffff66d0 user=0xffff80001592d000, vmspace=0xfffffd803f014660 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 53940 196468 74990 0 2 0 syz-executor.1 *53940 436892 74990 0 7 0x4000000 syz-executor.1 16163 82022 77225 0 2 0x2 syz-executor.0 74990 456960 77225 0 3 0x82 nanosleep syz-executor.1 15414 389987 1 0 3 0x100083 ttyin getty 43052 187061 0 0 3 0x14200 bored sosplice 77225 482427 31703 0 3 0x82 thrsleep syz-fuzzer 77225 30485 31703 0 3 0x4000082 nanosleep syz-fuzzer 77225 84020 31703 0 3 0x4000082 kqread syz-fuzzer 77225 377510 31703 0 3 0x4000082 thrsleep syz-fuzzer 77225 453010 31703 0 3 0x4000082 thrsleep syz-fuzzer 77225 259895 31703 0 3 0x4000082 thrsleep syz-fuzzer 77225 264325 31703 0 3 0x4000082 thrsleep syz-fuzzer 31703 146415 15636 0 3 0x10008a pause ksh 15636 179320 22051 0 3 0x92 select sshd 22051 256021 1 0 3 0x80 select sshd 23918 152499 36111 73 3 0x100090 kqread syslogd 36111 119376 1 0 3 0x100082 netio syslogd 92558 286999 0 0 2 0x14200 zerothread 11064 470764 0 0 3 0x14200 aiodoned aiodoned 4534 273060 0 0 3 0x14200 syncer update 11183 241682 0 0 3 0x14200 cleaner cleaner 42909 183386 0 0 3 0x14200 reaper reaper 97156 232982 0 0 3 0x14200 pgdaemon pagedaemon 41781 23001 0 0 3 0x14200 bored crynlk 80376 311053 0 0 3 0x14200 bored crypto 8290 228028 0 0 3 0x40014200 acpi0 acpi0 49069 152386 0 0 3 0x14200 bored softnet 18366 372632 0 0 3 0x14200 bored systqmp 9188 269258 0 0 3 0x14200 bored systq 40362 222071 0 0 3 0x40014200 bored softclock 16413 143986 0 0 3 0x40014200 idle0 99531 80539 0 0 3 0x14200 bored smr 1 456782 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 9529 6300K 14605K 78643K 19805 0 0 pcb 14 8K 8K 78643K 442 0 0 rtable 115 12K 12K 78643K 776 0 0 ifaddr 63 14K 15K 78643K 406 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 185 0 0 iov 0 0K 16K 78643K 389 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1199 75K 76K 78643K 4643 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 42 0 0 VM map 2 0K 0K 78643K 4 0 0 sem 12 0K 0K 78643K 425 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 3668 0 0 sigio 0 0K 0K 78643K 46 0 0 proc 43 30K 54K 78643K 1116 0 0 subproc 32 2K 2K 78643K 223 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 295 0 0 in_multi 33 2K 2K 78643K 261 0 0 ether_multi 1 0K 0K 78643K 23 0 0 mrt 0 0K 0K 78643K 6 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 84 371K 371K 78643K 84 0 0 exec 0 0K 1K 78643K 641 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 89 20K 30K 78643K 9501 0 0 UVM aobj 130 4K 4K 78643K 139 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 353 0 0 NDP 14 0K 0K 78643K 127 0 0 temp 184 3535K 4171K 78643K 59024 0 0 kqueue 0 0K 0K 78643K 17 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 29 0 23 1 0 1 1 0 8 0 rtpcb 80 179 0 179 6 5 1 1 0 8 1 rtentry 112 169 0 125 2 0 2 2 0 8 0 unpcb 120 1258 0 1252 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 2459 0 2459 1 1 0 1 0 8 0 tcpcb 544 683 0 678 1 0 1 1 0 8 0 ipq 40 12 0 12 6 6 0 1 0 8 0 ipqe 40 28 0 28 6 6 0 1 0 8 0 inpcb 280 2012 0 2007 2 1 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 39 0 33 1 0 1 1 0 8 0 pkpcb 40 24 0 24 9 9 0 1 0 8 0 ppxss 1128 57 0 57 12 11 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 698 0 503 15 2 13 13 0 8 0 art_table 32 699 0 503 2 0 2 2 0 8 0 art_node 16 166 0 126 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 4 2 1 1 1 0 8 0 semapl 112 423 0 413 1 0 1 1 0 8 0 shmpl 112 137 0 9 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 7184 0 5780 46 0 46 46 0 8 0 ffsino 240 7184 0 5780 84 0 84 84 0 8 0 nchpl 144 12401 0 10780 61 0 61 61 0 8 0 uvmvnodes 72 6411 0 0 117 0 117 117 0 8 0 vnodes 200 6411 0 0 338 0 338 338 0 8 0 namei 1024 39809 0 39808 5 4 1 1 0 8 0 vmpool 520 2 0 2 1 0 1 1 0 8 1 scsiplug 64 5 0 5 4 4 0 1 0 8 0 scxspl 192 39515 0 39515 23 22 1 7 0 8 1 plimitpl 152 317 0 311 1 0 1 1 0 8 0 sigapl 432 3807 0 3796 2 0 2 2 0 8 0 futexpl 56 60709 0 60709 6 5 1 1 0 8 1 knotepl 112 846 0 827 1 0 1 1 0 8 0 kqueuepl 104 743 0 741 1 0 1 1 0 8 0 pipepl 112 2182 0 2161 3 2 1 2 0 8 0 fdescpl 424 3808 0 3796 2 0 2 2 0 8 0 filepl 120 22893 0 22806 13 9 4 4 0 8 1 lockfpl 104 1201 0 1201 8 7 1 1 0 8 1 lockfspl 48 402 0 402 8 7 1 1 0 8 1 sessionpl 112 29 0 21 1 0 1 1 0 8 0 pgrppl 48 89 0 81 1 0 1 1 0 8 0 ucredpl 96 4663 0 4656 1 0 1 1 0 8 0 zombiepl 144 3799 0 3799 1 0 1 1 0 8 1 processpl 864 3826 0 3799 4 0 4 4 0 8 0 procpl 632 8257 0 8223 4 0 4 4 0 8 0 sosppl 128 32 0 32 8 8 0 1 0 8 0 sockpl 384 3498 0 3487 9 7 2 3 0 8 0 mcl64k 65536 334 0 334 37 36 1 29 0 8 1 mcl16k 16384 16 0 16 8 7 1 1 0 8 1 mcl12k 12288 62 0 62 13 12 1 1 0 8 1 mcl9k 9216 46 0 46 10 9 1 1 0 8 1 mcl8k 8192 47 0 47 14 13 1 1 0 8 1 mcl4k 4096 221 0 221 7 6 1 1 0 8 1 mcl2k2 2112 17 0 17 10 9 1 1 0 8 1 mcl2k 2048 64742 0 64700 15 9 6 12 0 8 0 mtagpl 80 101 0 99 2 1 1 1 0 8 0 mbufpl 256 119668 0 119603 31 25 6 20 0 8 0 bufpl 256 15391 0 8979 401 0 401 401 0 8 0 anonpl 16 341439 0 330886 186 121 65 69 0 62 12 amapchunkpl 152 17977 0 17879 62 51 11 18 0 158 6 amappl16 192 18438 0 17737 150 112 38 48 0 8 2 amappl15 184 580 0 579 2 1 1 1 0 8 0 amappl14 176 821 0 816 1 0 1 1 0 8 0 amappl13 168 783 0 782 1 0 1 1 0 8 0 amappl12 160 21 0 17 1 0 1 1 0 8 0 amappl11 152 755 0 751 1 0 1 1 0 8 0 amappl10 144 439 0 435 1 0 1 1 0 8 0 amappl9 136 1471 0 1468 1 0 1 1 0 8 0 amappl8 128 1107 0 1085 1 0 1 1 0 8 0 amappl7 120 437 0 428 1 0 1 1 0 8 0 amappl6 112 744 0 737 1 0 1 1 0 8 0 amappl5 104 400 0 393 1 0 1 1 0 8 0 amappl4 96 4061 0 4035 1 0 1 1 0 8 0 amappl3 88 443 0 432 1 0 1 1 0 8 0 amappl2 80 30094 0 30036 3 1 2 3 0 8 0 amappl1 72 76194 0 75820 23 13 10 19 0 8 0 amappl 80 8675 0 8644 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 64 138 0 9 3 0 3 3 0 8 0 uaddrrnd 24 3810 0 3796 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3810 0 3796 1 0 1 1 0 8 0 vmmpekpl 168 25156 0 25136 2 0 2 2 0 8 0 vmmpepl 168 445862 0 444197 226 128 98 101 0 357 22 vmsppl 272 3807 0 3796 2 1 1 2 0 8 0 pdppl 4096 7626 0 7596 9 4 5 6 0 8 0 pvpl 32 946882 0 933328 422 180 242 268 0 265 114 pmappl 200 3809 0 3798 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 635 0 109 16 0 16 16 0 8 0