uvm_fault(0xfffffd803f013ee0, 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(0xfffffd803f013ee0, 0x24, 0, 1) -> e frag6_input(ffff800015940ad8,ffff800015940ae4,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 end trace frame: 0xffff800015940960, count: 0 ddb> trace frag6_input(ffff800015940ad8,ffff800015940ae4,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 ip_deliver(ffff800015940ad8,ffff800015940ae4,2c,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:665 ip6_input_if(ffff800015940ad8,ffff800015940ae4,29,0,ffff80000069c000) at ip6_input_if+0x153a ip6_ours sys/netinet6/ip6_input.c:518 [inline] ip6_input_if(ffff800015940ad8,ffff800015940ae4,29,0,ffff80000069c000) at ip6_input_if+0x153a sys/netinet6/ip6_input.c:340 ipv6_input(ffff80000069c000,fffffd803460da00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000069c000,fffffd803460da00,18) at if_input_local+0x121 sys/net/if.c:783 ip6_output(fffffd803460df00,ffff800000a49280,fffffd8036fdc070,0,0,fffffd8036fdc000) at ip6_output+0xd35 rip6_output(fffffd803460df00,fffffd8036fdda80,ffff800015940e48,0) at rip6_output+0x4d7 sys/netinet6/raw_ip6.c:481 rip6_usrreq(fffffd8036fdda80,9,fffffd803460df00,0,0,ffff800014934508) at rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 sosend(fffffd8036fdda80,0,ffff800015941078,0,0,0) at sosend+0x660 sys/kern/uipc_socket.c:524 dofilewritev(ffff800014934508,3,ffff800015941078,0,ffff800015941180) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff800014934508,ffff800015941118,ffff800015941180) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff8000159411e0) at syscall+0x508 Xsyscall(6,0,c,0,3,96c599ce010) at Xsyscall+0x128 end of kernel end trace frame: 0x96ee1989b80, count: -13 ddb> show registers rdi 0 rsi 0 rbp 0xffff8000159408e0 rbx 0x600 rdx 0 rcx 0 rax 0 r8 0x30 r9 0 r10 0x9d5842247fac2a4a r11 0x8d71fe7666d30959 r12 0 r13 0xfffffd802fc59f30 r14 0xfffffd802fc59f40 r15 0xfffffd80047e3054 rip 0xffffffff8195c922 frag6_input+0x762 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800015940820 ss 0x10 frag6_input+0x762: movl 0x24(%rax),%r14d ddb> show proc PROC (syz-executor.1) pid=426605 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800014934780,0xffffffff825604b0 process=0xffff8000ffff7450 user=0xffff80001593c000, vmspace=0xfffffd803f013ee0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 66601 332482 12475 0 2 0 syz-executor.1 *66601 426605 12475 0 7 0x4000000 syz-executor.1 29930 454068 86026 0 2 0x2 syz-executor.0 12475 52157 86026 0 3 0x82 nanosleep syz-executor.1 43036 206653 1 0 3 0x100083 ttyin getty 67483 43077 0 0 3 0x14200 bored sosplice 86026 19058 18417 0 3 0x82 thrsleep syz-fuzzer 86026 520958 18417 0 3 0x4000082 nanosleep syz-fuzzer 86026 121448 18417 0 3 0x4000082 thrsleep syz-fuzzer 86026 202813 18417 0 3 0x4000082 thrsleep syz-fuzzer 86026 70515 18417 0 3 0x4000082 thrsleep syz-fuzzer 86026 93334 18417 0 3 0x4000082 kqread syz-fuzzer 86026 173741 18417 0 3 0x4000082 thrsleep syz-fuzzer 18417 443089 94097 0 3 0x10008a pause ksh 94097 215391 19702 0 3 0x92 select sshd 19702 53652 1 0 3 0x80 select sshd 87443 286483 26281 73 3 0x100090 kqread syslogd 26281 424112 1 0 3 0x100082 netio syslogd 92554 241063 1 77 3 0x100090 poll dhclient 4057 392573 1 0 3 0x80 poll dhclient 87574 368406 0 0 2 0x14200 zerothread 25005 327443 0 0 3 0x14200 aiodoned aiodoned 61018 167660 0 0 3 0x14200 syncer update 78780 381450 0 0 3 0x14200 cleaner cleaner 71367 471152 0 0 3 0x14200 reaper reaper 61110 212530 0 0 3 0x14200 pgdaemon pagedaemon 2542 479224 0 0 3 0x14200 bored crynlk 34383 388728 0 0 3 0x14200 bored crypto 31459 506548 0 0 3 0x40014200 acpi0 acpi0 97751 183208 0 0 3 0x14200 bored softnet 41809 410596 0 0 3 0x14200 bored systqmp 98265 323632 0 0 3 0x14200 bored systq 47543 121822 0 0 3 0x40014200 bored softclock 7537 445756 0 0 3 0x40014200 idle0 94415 464058 0 0 3 0x14200 bored smr 1 70593 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 9546 6483K 6998K 78643K 15071 0 0 pcb 14 8K 8K 78643K 259 0 0 rtable 118 12K 12K 78643K 651 0 0 ifaddr 68 14K 15K 78643K 210 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 91 0 0 iov 0 0K 20K 78643K 172 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1213 76K 77K 78643K 2847 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 20 0 0 VM map 2 0K 0K 78643K 4 0 0 sem 12 1K 1K 78643K 168 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 1737 0 0 sigio 0 0K 0K 78643K 26 0 0 proc 41 30K 54K 78643K 626 0 0 subproc 32 2K 2K 78643K 104 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 138 0 0 in_multi 33 2K 2K 78643K 134 0 0 ether_multi 1 0K 0K 78643K 10 0 0 mrt 0 0K 0K 78643K 11 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 90 397K 397K 78643K 90 0 0 exec 0 0K 1K 78643K 400 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 87 20K 29K 78643K 4926 0 0 UVM aobj 68 3K 3K 78643K 73 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 177 0 0 NDP 15 0K 0K 78643K 63 0 0 temp 190 3532K 3607K 78643K 15010 0 0 kqueue 0 0K 0K 78643K 23 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 14 0 8 1 0 1 1 0 8 0 rtpcb 80 88 0 86 1 0 1 1 0 8 0 rtentry 112 93 0 48 2 0 2 2 0 8 0 unpcb 120 649 0 641 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 1672 0 1672 2 2 0 2 0 8 0 tcpcb 544 284 0 279 1 0 1 1 0 8 0 ipq 40 6 0 6 3 3 0 1 0 8 0 ipqe 40 14 0 14 3 3 0 1 0 8 0 inpcb 280 924 0 916 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 18 0 12 1 0 1 1 0 8 0 pkpcb 40 10 0 10 3 3 0 1 0 8 0 ppxss 1128 25 0 25 6 6 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 373 0 179 14 1 13 13 0 8 0 art_table 32 374 0 179 2 0 2 2 0 8 0 art_node 16 89 0 49 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 166 0 156 1 0 1 1 0 8 0 shmpl 112 71 0 5 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 4141 0 2731 46 0 46 46 0 8 0 ffsino 240 4141 0 2731 84 0 84 84 0 8 0 nchpl 144 6764 0 5135 62 0 62 62 0 8 0 uvmvnodes 72 5292 0 0 97 0 97 97 0 8 0 vnodes 200 5292 0 0 279 0 279 279 0 8 0 namei 1024 21253 0 21253 1 0 1 1 0 8 1 vmpool 520 2 0 2 1 1 0 1 0 8 0 scsiplug 64 4 0 4 4 3 1 1 0 8 1 scxspl 192 18426 0 18426 8 7 1 7 0 8 1 plimitpl 152 151 0 144 1 0 1 1 0 8 0 sigapl 432 1897 0 1884 2 0 2 2 0 8 0 futexpl 56 28640 0 28640 1 0 1 1 0 8 1 knotepl 112 413 0 394 1 0 1 1 0 8 0 kqueuepl 104 384 0 382 1 0 1 1 0 8 0 pipepl 112 1120 0 1101 3 2 1 2 0 8 0 fdescpl 424 1898 0 1884 2 0 2 2 0 8 0 filepl 120 11447 0 11352 5 1 4 5 0 8 0 lockfpl 104 551 0 551 2 1 1 1 0 8 1 lockfspl 48 202 0 202 2 1 1 1 0 8 1 sessionpl 112 22 0 12 1 0 1 1 0 8 0 pgrppl 48 42 0 32 1 0 1 1 0 8 0 ucredpl 96 2217 0 2210 1 0 1 1 0 8 0 zombiepl 144 1884 0 1884 1 0 1 1 0 8 1 processpl 864 1913 0 1884 4 0 4 4 0 8 0 procpl 632 4030 0 3994 4 0 4 4 0 8 0 sosppl 128 23 0 23 5 5 0 1 0 8 0 sockpl 384 1700 0 1682 5 2 3 4 0 8 1 mcl64k 65536 41 0 41 8 7 1 1 0 8 1 mcl16k 16384 4 0 4 4 4 0 1 0 8 0 mcl12k 12288 31 0 31 5 4 1 1 0 8 1 mcl9k 9216 24 0 24 8 8 0 1 0 8 0 mcl8k 8192 28 0 28 6 6 0 1 0 8 0 mcl4k 4096 108 0 108 3 2 1 1 0 8 1 mcl2k2 2112 11 0 11 5 4 1 1 0 8 1 mcl2k 2048 61653 0 61609 27 21 6 23 0 8 0 mtagpl 80 37 0 33 2 1 1 1 0 8 0 mbufpl 256 106330 0 106233 19 11 8 13 0 8 0 bufpl 256 10294 0 4614 356 0 356 356 0 8 0 anonpl 16 172299 0 160299 98 38 60 66 0 62 7 amapchunkpl 152 8307 0 8206 37 8 29 29 0 158 24 amappl16 192 9127 0 8421 77 32 45 48 0 8 8 amappl15 184 253 0 249 1 0 1 1 0 8 0 amappl14 176 316 0 305 1 0 1 1 0 8 0 amappl13 168 6 0 6 1 1 0 1 0 8 0 amappl12 160 948 0 947 1 0 1 1 0 8 0 amappl11 152 67 0 56 1 0 1 1 0 8 0 amappl10 144 541 0 541 1 1 0 1 0 8 0 amappl9 136 590 0 586 1 0 1 1 0 8 0 amappl8 128 170 0 149 1 0 1 1 0 8 0 amappl7 120 516 0 510 1 0 1 1 0 8 0 amappl6 112 53 0 47 1 0 1 1 0 8 0 amappl5 104 1152 0 1141 1 0 1 1 0 8 0 amappl4 96 1864 0 1834 1 0 1 1 0 8 0 amappl3 88 501 0 491 1 0 1 1 0 8 0 amappl2 80 14500 0 14430 3 1 2 3 0 8 0 amappl1 72 42311 0 41906 25 16 9 19 0 8 0 amappl 80 4316 0 4282 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 72 0 5 2 0 2 2 0 8 0 uaddrrnd 24 1900 0 1884 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1900 0 1884 1 0 1 1 0 8 0 vmmpekpl 168 14538 0 14514 2 0 2 2 0 8 0 vmmpepl 168 226231 0 224487 160 61 99 101 0 357 17 vmsppl 272 1897 0 1884 2 1 1 2 0 8 0 pdppl 4096 3806 0 3772 6 1 5 6 0 8 0 pvpl 32 486954 0 471927 215 62 153 159 0 265 21 pmappl 200 1899 0 1886 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 537 0 56 15 1 14 14 0 8 0