Qà8Qà8uvm_fault(0xfffffd803f014bb0, 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(0xfffffd803f014bb0, 0x24, 0, 1) -> e frag6_input(ffff800016966c28,ffff800016966c34,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 end trace frame: 0xffff800016966ab0, count: 0 ddb> trace frag6_input(ffff800016966c28,ffff800016966c34,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 ip_deliver(ffff800016966c28,ffff800016966c34,2c,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:665 ip6_input_if(ffff800016966c28,ffff800016966c34,29,0,ffff80000069c000) at ip6_input_if+0x153a ip6_ours sys/netinet6/ip6_input.c:518 [inline] ip6_input_if(ffff800016966c28,ffff800016966c34,29,0,ffff80000069c000) at ip6_input_if+0x153a sys/netinet6/ip6_input.c:340 ipv6_input(ffff80000069c000,fffffd802ff8f200) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000069c000,fffffd802ff8f200,18) at if_input_local+0x121 sys/net/if.c:783 ip6_output(fffffd802ff8f500,ffff800000a92c00,fffffd8039c242a0,0,0,fffffd8039c24230) at ip6_output+0xd35 rip6_output(fffffd802ff8f500,fffffd8039c25000,ffff800016966f98,0) at rip6_output+0x4d7 sys/netinet6/raw_ip6.c:481 rip6_usrreq(fffffd8039c25000,9,fffffd802ff8f500,0,0,ffff8000ffff3b40) at rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 sosend(fffffd8039c25000,0,ffff8000169671c8,0,0,0) at sosend+0x660 sys/kern/uipc_socket.c:524 dofilewritev(ffff8000ffff3b40,3,ffff8000169671c8,0,ffff8000169672d0) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff8000ffff3b40,ffff800016967268,ffff8000169672d0) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff800016967330) at syscall+0x508 Xsyscall(6,0,c,0,3,bc78b5e9010) at Xsyscall+0x128 end of kernel end trace frame: 0xbca800f3dd0, count: -13 ddb> show registers rdi 0 rsi 0 rbp 0xffff800016966a30 rbx 0x600 rdx 0 rcx 0 rax 0 r8 0x30 r9 0 r10 0xc60b98b91464e09c r11 0x281d90f83a7382f0 r12 0 r13 0xfffffd802f7fef38 r14 0xfffffd802f7fef48 r15 0xfffffd80047a0054 rip 0xffffffff818f50a2 frag6_input+0x762 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800016966970 ss 0x10 frag6_input+0x762: movl 0x24(%rax),%r14d ddb> show proc PROC (syz-executor.1) pid=301370 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2508,0xffffffff8257f9f0 process=0xffff8000148a3458 user=0xffff800016962000, vmspace=0xfffffd803f014bb0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 94194 440804 99457 0 3 0x80 fsleep syz-executor.1 *94194 301370 99457 0 7 0x4000000 syz-executor.1 99457 13809 46870 0 3 0x82 nanosleep syz-executor.1 24965 426685 46870 0 2 0x2 syz-executor.0 62291 184413 0 0 3 0x14200 acct acct 1963 436921 1 0 3 0x100083 ttyin getty 97327 13599 0 0 3 0x14200 bored sosplice 46870 228337 3840 0 3 0x82 thrsleep syz-fuzzer 46870 369962 3840 0 3 0x4000082 nanosleep syz-fuzzer 46870 229470 3840 0 3 0x4000082 thrsleep syz-fuzzer 46870 363176 3840 0 3 0x4000082 thrsleep syz-fuzzer 46870 241191 3840 0 3 0x4000082 thrsleep syz-fuzzer 46870 298346 3840 0 3 0x4000082 kqread syz-fuzzer 46870 106496 3840 0 3 0x4000082 thrsleep syz-fuzzer 3840 155653 68188 0 3 0x10008a pause ksh 68188 40275 87733 0 3 0x92 select sshd 87733 156498 1 0 3 0x80 select sshd 86599 161842 87715 73 3 0x100090 kqread syslogd 87715 295928 1 0 3 0x100082 netio syslogd 2893 308947 1 77 3 0x100090 poll dhclient 37260 153870 1 0 3 0x80 poll dhclient 71932 498952 0 0 2 0x14200 zerothread 95278 431945 0 0 3 0x14200 aiodoned aiodoned 44333 451387 0 0 3 0x14200 syncer update 69784 362560 0 0 3 0x14200 cleaner cleaner 60182 198336 0 0 3 0x14200 reaper reaper 7803 486519 0 0 3 0x14200 pgdaemon pagedaemon 56143 366790 0 0 3 0x14200 bored crynlk 89427 437507 0 0 3 0x14200 bored crypto 95124 22064 0 0 3 0x40014200 acpi0 acpi0 79631 216712 0 0 3 0x14200 bored softnet 1091 438960 0 0 3 0x14200 bored systqmp 6208 150230 0 0 3 0x14200 bored systq 43461 98020 0 0 3 0x40014200 bored softclock 74633 415680 0 0 3 0x40014200 idle0 64084 384180 0 0 3 0x14200 bored smr 1 523910 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 9513 6472K 6991K 78643K 15934 0 0 pcb 14 8K 8K 78643K 223 0 0 rtable 116 4K 4K 78643K 868 0 0 ifaddr 55 14K 15K 78643K 282 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 131 0 0 iov 0 0K 32K 78643K 205 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1219 77K 77K 78643K 3088 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 2 0 0 sem 12 0K 1K 78643K 196 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 2062 0 0 sigio 0 0K 0K 78643K 9 0 0 proc 41 30K 54K 78643K 810 0 0 subproc 32 2K 2K 78643K 161 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 140 0 0 in_multi 33 2K 2K 78643K 146 0 0 ether_multi 1 0K 0K 78643K 6 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 78 344K 344K 78643K 78 0 0 exec 0 0K 1K 78643K 432 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 90 21K 30K 78643K 5821 0 0 UVM aobj 104 5K 5K 78643K 113 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 203 0 0 NDP 11 0K 0K 78643K 84 0 0 temp 162 3531K 4165K 78643K 42555 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 20 0 14 1 0 1 1 0 8 0 rtpcb 80 114 0 112 1 0 1 1 0 8 0 rtentry 112 125 0 79 2 0 2 2 0 8 0 unpcb 120 725 0 717 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 3459 0 3459 2 2 0 1 0 8 0 tcpcb 544 321 0 316 1 0 1 1 0 8 0 ipq 40 2 0 2 2 2 0 1 0 8 0 ipqe 40 3 0 3 2 2 0 1 0 8 0 inpcb 280 1013 0 1005 1 0 1 1 0 8 0 ip6q 72 2 0 1 2 1 1 1 0 8 0 ip6af 48 3 0 2 2 1 1 1 0 8 0 nd6 48 28 0 21 1 0 1 1 0 8 0 pkpcb 40 14 0 14 5 5 0 1 0 8 0 ppxss 1128 40 0 40 9 9 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 512 0 317 15 2 13 13 0 8 0 art_table 32 513 0 317 2 0 2 2 0 8 0 art_node 16 123 0 82 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 8 1 0 1 1 0 8 0 semapl 112 192 0 182 1 0 1 1 0 8 0 shmpl 112 111 0 9 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 4539 0 3119 47 1 46 47 0 8 0 ffsino 240 4539 0 3119 84 0 84 84 0 8 0 nchpl 144 7543 0 5919 61 0 61 61 0 8 0 uvmvnodes 72 5899 0 0 108 0 108 108 0 8 0 vnodes 200 5899 0 0 311 0 311 311 0 8 0 namei 1024 23677 0 23677 3 2 1 1 0 8 1 scsiplug 64 6 0 6 5 5 0 1 0 8 0 scxspl 192 21784 0 21784 13 12 1 7 0 8 1 plimitpl 152 173 0 166 1 0 1 1 0 8 0 sigapl 432 2213 0 2200 2 0 2 2 0 8 0 futexpl 56 32777 0 32776 2 1 1 1 0 8 0 knotepl 112 526 0 507 1 0 1 1 0 8 0 kqueuepl 104 506 0 504 1 0 1 1 0 8 0 pipepl 112 1186 0 1167 4 3 1 2 0 8 0 fdescpl 424 2214 0 2200 2 0 2 2 0 8 0 filepl 120 12820 0 12725 5 1 4 5 0 8 1 lockfpl 104 675 0 675 3 3 0 1 0 8 0 lockfspl 48 230 0 230 3 3 0 1 0 8 0 sessionpl 112 25 0 15 1 0 1 1 0 8 0 pgrppl 48 55 0 45 1 0 1 1 0 8 0 ucredpl 96 2244 0 2237 1 0 1 1 0 8 0 zombiepl 144 2200 0 2200 2 1 1 1 0 8 1 processpl 864 2230 0 2200 4 0 4 4 0 8 0 procpl 632 4760 0 4723 4 0 4 4 0 8 0 sosppl 128 14 0 14 6 6 0 1 0 8 0 sockpl 384 1877 0 1859 5 2 3 4 0 8 1 mcl64k 65536 50 0 50 6 6 0 1 0 8 0 mcl16k 16384 13 0 13 8 8 0 1 0 8 0 mcl12k 12288 41 0 41 6 6 0 1 0 8 0 mcl9k 9216 21 0 21 8 7 1 1 0 8 1 mcl8k 8192 35 0 35 8 8 0 1 0 8 0 mcl4k 4096 104 0 104 6 5 1 1 0 8 1 mcl2k2 2112 13 0 13 7 7 0 1 0 8 0 mcl2k 2048 56635 0 56580 20 12 8 15 0 8 0 mtagpl 80 48 0 42 2 1 1 1 0 8 0 mbufpl 256 101892 0 101783 18 9 9 11 0 8 0 bufpl 256 10948 0 5734 326 0 326 326 0 8 0 anonpl 16 216208 0 204245 105 52 53 67 0 62 0 amapchunkpl 152 9905 0 9801 34 29 5 18 0 158 0 amappl16 192 11583 0 10884 104 68 36 47 0 8 0 amappl15 184 227 0 226 3 2 1 1 0 8 0 amappl14 176 302 0 296 1 0 1 1 0 8 0 amappl13 168 908 0 906 1 0 1 1 0 8 0 amappl12 160 8 0 5 1 0 1 1 0 8 0 amappl11 152 403 0 392 1 0 1 1 0 8 0 amappl10 144 385 0 382 2 1 1 1 0 8 0 amappl9 136 830 0 827 1 0 1 1 0 8 0 amappl8 128 381 0 359 1 0 1 1 0 8 0 amappl7 120 370 0 364 1 0 1 1 0 8 0 amappl6 112 381 0 372 1 0 1 1 0 8 0 amappl5 104 202 0 191 1 0 1 1 0 8 0 amappl4 96 2252 0 2222 2 1 1 2 0 8 0 amappl3 88 655 0 645 1 0 1 1 0 8 0 amappl2 80 16843 0 16778 3 1 2 3 0 8 0 amappl1 72 49522 0 49116 27 18 9 19 0 8 0 amappl 80 5099 0 5064 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 64 112 0 9 2 0 2 2 0 8 0 uaddrrnd 24 2214 0 2200 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2214 0 2200 1 0 1 1 0 8 0 vmmpekpl 168 17291 0 17263 2 0 2 2 0 8 0 vmmpepl 168 265720 0 263976 197 115 82 106 0 357 3 vmsppl 272 2213 0 2200 3 2 1 2 0 8 0 pdppl 4096 4434 0 4400 6 1 5 6 0 8 0 pvpl 32 570313 0 555334 245 116 129 163 0 265 0 pmappl 200 2213 0 2200 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 510 0 57 14 0 14 14 0 8 0