uvm_fault(0xfffffd803f014440, 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(0xfffffd803f014440, 0x24, 0, 1) -> e frag6_input(ffff800017962318,ffff800017962324,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 end trace frame: 0xffff8000179621a0, count: 0 ddb> trace frag6_input(ffff800017962318,ffff800017962324,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 ip_deliver(ffff800017962318,ffff800017962324,2c,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:665 ip6_input_if(ffff800017962318,ffff800017962324,29,0,ffff80000069c000) at ip6_input_if+0x153a ip6_ours sys/netinet6/ip6_input.c:518 [inline] ip6_input_if(ffff800017962318,ffff800017962324,29,0,ffff80000069c000) at ip6_input_if+0x153a sys/netinet6/ip6_input.c:340 ipv6_input(ffff80000069c000,fffffd803cdd8e00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000069c000,fffffd803cdd8e00,18) at if_input_local+0x121 sys/net/if.c:783 ip6_output(fffffd803cdd8400,ffff800000aa2a80,fffffd803c1334d0,0,0,fffffd803c133460) at ip6_output+0xd35 rip6_output(fffffd803cdd8400,fffffd803c134780,ffff800017962688,0) at rip6_output+0x4d7 sys/netinet6/raw_ip6.c:481 rip6_usrreq(fffffd803c134780,9,fffffd803cdd8400,0,0,ffff8000ffff2290) at rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 sosend(fffffd803c134780,0,ffff8000179628b8,0,0,0) at sosend+0x660 sys/kern/uipc_socket.c:524 dofilewritev(ffff8000ffff2290,3,ffff8000179628b8,0,ffff8000179629c0) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff8000ffff2290,ffff800017962958,ffff8000179629c0) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff800017962a20) at syscall+0x508 Xsyscall(6,0,c,0,3,3a49d287010) at Xsyscall+0x128 end of kernel end trace frame: 0x3a71e7b0360, count: -13 ddb> show registers rdi 0 rsi 0 rbp 0xffff800017962120 rbx 0x600 rdx 0 rcx 0 rax 0 r8 0x30 r9 0 r10 0x3b5d087648ed9f83 r11 0xa550c6365426e4d0 r12 0 r13 0xfffffd80276c5f30 r14 0xfffffd80276c5f40 r15 0xfffffd80047c7854 rip 0xffffffff81c4b992 frag6_input+0x762 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800017962060 ss 0x10 frag6_input+0x762: movl 0x24(%rax),%r14d ddb> show proc PROC (syz-executor.1) pid=236697 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2018,0xffffffff82570880 process=0xffff8000ffff7450 user=0xffff80001795d000, vmspace=0xfffffd803f014440 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 65215 515280 29938 0 2 0 syz-executor.1 *65215 236697 29938 0 7 0x4000000 syz-executor.1 26144 313223 34593 0 2 0x2 syz-executor.0 29938 249795 34593 0 3 0x82 nanosleep syz-executor.1 40432 69405 1 0 3 0x100083 ttyin getty 57907 334605 0 0 3 0x14200 bored sosplice 34593 478208 50 0 3 0x82 thrsleep syz-fuzzer 34593 432940 50 0 3 0x4000082 nanosleep syz-fuzzer 34593 235411 50 0 3 0x4000082 thrsleep syz-fuzzer 34593 339268 50 0 3 0x4000082 thrsleep syz-fuzzer 34593 76263 50 0 3 0x4000082 thrsleep syz-fuzzer 34593 510720 50 0 3 0x4000082 kqread syz-fuzzer 34593 471904 50 0 3 0x4000082 thrsleep syz-fuzzer 50 178040 39833 0 3 0x10008a pause ksh 39833 38648 73358 0 3 0x92 select sshd 73358 167173 1 0 3 0x80 select sshd 15600 424659 45168 73 3 0x100090 kqread syslogd 45168 187507 1 0 3 0x100082 netio syslogd 81894 523944 1 77 3 0x100090 poll dhclient 53558 484707 1 0 3 0x80 poll dhclient 49285 329988 0 0 2 0x14200 zerothread 78501 256301 0 0 3 0x14200 aiodoned aiodoned 46313 439465 0 0 3 0x14200 syncer update 15395 177460 0 0 3 0x14200 cleaner cleaner 84987 381095 0 0 3 0x14200 reaper reaper 23967 220820 0 0 3 0x14200 pgdaemon pagedaemon 31265 491130 0 0 3 0x14200 bored crynlk 83426 297091 0 0 3 0x14200 bored crypto 44630 41363 0 0 3 0x40014200 acpi0 acpi0 2029 374155 0 0 3 0x14200 bored softnet 12698 289954 0 0 3 0x14200 bored systqmp 53962 212445 0 0 3 0x14200 bored systq 40324 480291 0 0 3 0x40014200 bored softclock 17240 386035 0 0 3 0x40014200 idle0 20909 142917 0 0 3 0x14200 bored smr 1 140401 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 9539 6492K 6870K 78643K 14941 0 0 pcb 14 8K 8K 78643K 215 0 0 rtable 111 4K 4K 78643K 737 0 0 ifaddr 64 14K 14K 78643K 224 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 134 0 0 iov 0 0K 28K 78643K 175 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1210 76K 77K 78643K 2786 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 31 0 0 VM map 2 0K 0K 78643K 8 0 0 sem 11 1K 1K 78643K 17 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 1865 0 0 sigio 0 0K 0K 78643K 22 0 0 proc 43 30K 54K 78643K 795 0 0 subproc 32 2K 2K 78643K 136 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 134 0 0 in_multi 33 2K 2K 78643K 150 0 0 ether_multi 1 0K 0K 78643K 11 0 0 mrt 0 0K 0K 78643K 4 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 400 0 0 pfkey data 0 0K 4K 78643K 4 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 99 21K 30K 78643K 5253 0 0 UVM aobj 82 3K 3K 78643K 90 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 217 0 0 NDP 14 0K 0K 78643K 69 0 0 temp 184 3535K 3607K 78643K 49599 0 0 kqueue 0 0K 0K 78643K 14 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 18 0 12 1 0 1 1 0 8 0 rtpcb 80 115 0 113 1 0 1 1 0 8 0 rtentry 112 117 0 73 3 1 2 2 0 8 0 unpcb 120 647 0 639 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 1563 0 1563 1 1 0 1 0 8 0 tcpcb 544 353 0 348 1 0 1 1 0 8 0 inpcb 280 974 0 966 1 0 1 1 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 24 0 18 1 0 1 1 0 8 0 pkpcb 40 14 0 14 4 4 0 1 0 8 0 swfcl 56 1 0 0 1 0 1 1 0 8 0 ppxss 1128 24 0 24 6 6 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 476 0 281 15 2 13 13 0 8 0 art_table 32 477 0 281 2 0 2 2 0 8 0 art_node 16 110 0 70 1 0 1 1 0 8 0 sysvmsgpl 40 28 0 14 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 15 0 6 1 0 1 1 0 8 0 shmpl 112 88 0 8 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 4187 0 2773 46 0 46 46 0 8 0 ffsino 240 4187 0 2773 84 0 84 84 0 8 0 nchpl 144 6993 0 5373 62 0 62 62 0 8 0 uvmvnodes 72 5352 0 0 98 0 98 98 0 8 0 vnodes 200 5352 0 0 282 0 282 282 0 8 0 namei 1024 21786 0 21785 2 1 1 1 0 8 0 vmpool 520 6 0 6 2 2 0 1 0 8 0 scsiplug 64 3 0 3 2 2 0 1 0 8 0 scxspl 192 21256 0 21256 12 11 1 7 0 8 1 plimitpl 152 196 0 189 1 0 1 1 0 8 0 sigapl 432 2021 0 2008 2 0 2 2 0 8 0 futexpl 56 30254 0 30254 1 0 1 1 0 8 1 knotepl 112 570 0 551 1 0 1 1 0 8 0 kqueuepl 104 520 0 518 1 0 1 1 0 8 0 pipepl 112 1144 0 1125 3 2 1 2 0 8 0 fdescpl 424 2022 0 2008 2 0 2 2 0 8 0 filepl 120 11704 0 11608 5 1 4 5 0 8 1 lockfpl 104 620 0 620 2 1 1 1 0 8 1 lockfspl 48 212 0 212 2 1 1 1 0 8 1 sessionpl 112 26 0 16 1 0 1 1 0 8 0 pgrppl 48 48 0 38 1 0 1 1 0 8 0 ucredpl 96 1952 0 1945 1 0 1 1 0 8 0 zombiepl 144 2009 0 2009 2 1 1 1 0 8 1 processpl 864 2038 0 2009 4 0 4 4 0 8 0 procpl 632 4240 0 4204 4 0 4 4 0 8 0 sosppl 128 20 0 20 6 6 0 1 0 8 0 sockpl 384 1765 0 1747 3 0 3 3 0 8 1 mcl64k 65536 273 0 273 32 31 1 29 0 8 1 mcl16k 16384 7 0 7 5 5 0 1 0 8 0 mcl12k 12288 27 0 27 6 5 1 1 0 8 1 mcl9k 9216 23 0 23 7 6 1 1 0 8 1 mcl8k 8192 32 0 32 7 6 1 1 0 8 1 mcl4k 4096 89 0 89 2 1 1 1 0 8 1 mcl2k2 2112 5 0 5 3 3 0 1 0 8 0 mcl2k 2048 62239 0 62190 16 9 7 13 0 8 0 mtagpl 80 34 0 29 3 2 1 1 0 8 0 mbufpl 256 107693 0 107565 29 19 10 21 0 8 1 bufpl 256 13134 0 6108 441 1 440 440 0 8 0 anonpl 16 211185 0 201162 109 44 65 67 0 62 12 amapchunkpl 152 9684 0 9572 44 33 11 15 0 158 6 amappl16 192 9935 0 9259 88 48 40 46 0 8 6 amappl15 184 355 0 355 1 0 1 1 0 8 1 amappl14 176 561 0 555 1 0 1 1 0 8 0 amappl13 168 16 0 14 1 0 1 1 0 8 0 amappl12 160 10 0 9 1 0 1 1 0 8 0 amappl11 152 526 0 513 1 0 1 1 0 8 0 amappl10 144 607 0 607 5 4 1 1 0 8 1 amappl9 136 923 0 917 1 0 1 1 0 8 0 amappl8 128 485 0 460 1 0 1 1 0 8 0 amappl7 120 589 0 583 1 0 1 1 0 8 0 amappl6 112 502 0 492 1 0 1 1 0 8 0 amappl5 104 196 0 186 1 0 1 1 0 8 0 amappl4 96 1928 0 1902 1 0 1 1 0 8 0 amappl3 88 1046 0 1035 1 0 1 1 0 8 0 amappl2 80 14960 0 14894 3 1 2 3 0 8 0 amappl1 72 44800 0 44393 25 16 9 19 0 8 0 amappl 80 4580 0 4543 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 89 0 8 2 0 2 2 0 8 0 uaddrrnd 24 2028 0 2008 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2028 0 2008 1 0 1 1 0 8 0 vmmpekpl 168 15668 0 15643 2 0 2 2 0 8 0 vmmpepl 168 241013 0 239291 186 87 99 103 0 357 22 vmsppl 272 2021 0 2008 4 3 1 2 0 8 0 pdppl 4096 4062 0 4028 6 1 5 6 0 8 0 pvpl 32 658393 0 645277 350 93 257 261 0 265 131 pmappl 200 2027 0 2014 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 650 0 81 17 0 17 17 0 8 0