uvm_fault(0xfffffd803f013bb0, 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(0xfffffd803f013bb0, 0x24, 0, 1) -> e frag6_input(ffff800016968ed8,ffff800016968ee4,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 end trace frame: 0xffff800016968d60, count: 0 ddb> trace frag6_input(ffff800016968ed8,ffff800016968ee4,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 ip_deliver(ffff800016968ed8,ffff800016968ee4,2c,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:665 ip6_input_if(ffff800016968ed8,ffff800016968ee4,29,0,ffff80000069c000) at ip6_input_if+0x153a ip6_ours sys/netinet6/ip6_input.c:518 [inline] ip6_input_if(ffff800016968ed8,ffff800016968ee4,29,0,ffff80000069c000) at ip6_input_if+0x153a sys/netinet6/ip6_input.c:340 ipv6_input(ffff80000069c000,fffffd8036ec9b00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000069c000,fffffd8036ec9b00,18) at if_input_local+0x121 sys/net/if.c:783 ip6_output(fffffd8036ec9600,ffff800000ac4400,fffffd80398cc2a0,0,0,fffffd80398cc230) at ip6_output+0xd35 rip6_output(fffffd8036ec9600,fffffd80398cdc00,ffff800016969248,0) at rip6_output+0x4d7 sys/netinet6/raw_ip6.c:481 rip6_usrreq(fffffd80398cdc00,9,fffffd8036ec9600,0,0,ffff8000ffff2290) at rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 sosend(fffffd80398cdc00,0,ffff800016969478,0,0,0) at sosend+0x660 sys/kern/uipc_socket.c:524 dofilewritev(ffff8000ffff2290,3,ffff800016969478,0,ffff800016969580) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff8000ffff2290,ffff800016969518,ffff800016969580) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff8000169695e0) at syscall+0x508 Xsyscall(6,0,c,0,3,ff17f385010) at Xsyscall+0x128 end of kernel end trace frame: 0xff408fa59d0, count: -13 ddb> show registers rdi 0 rsi 0 rbp 0xffff800016968ce0 rbx 0x600 rdx 0 rcx 0 rax 0 r8 0x30 r9 0 r10 0xe6f1b7d4ed28e276 r11 0xa78b94f821d9ad3 r12 0 r13 0xfffffd802af5af30 r14 0xfffffd802af5af40 r15 0xfffffd8034393054 rip 0xffffffff8165f522 frag6_input+0x762 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800016968c20 ss 0x10 frag6_input+0x762: movl 0x24(%rax),%r14d ddb> show proc PROC (syz-executor.1) pid=280269 stat=onproc flags process=0 proc=4000000 pri=82, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff38c8,0xffffffff8257fe00 process=0xffff8000148a30f8 user=0xffff800016964000, vmspace=0xfffffd803f013bb0 estcpu=32, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 3557 90719 33112 0 2 0 syz-executor.1 * 3557 280269 33112 0 7 0x4000000 syz-executor.1 46183 333175 63125 0 2 0x2 syz-executor.0 33112 193594 63125 0 3 0x82 nanosleep syz-executor.1 33740 455900 1 0 3 0x100083 ttyin getty 79696 512312 0 0 3 0x14200 acct acct 53738 352585 0 0 3 0x14200 bored sosplice 63125 267357 46133 0 3 0x82 thrsleep syz-fuzzer 63125 71312 46133 0 3 0x4000082 thrsleep syz-fuzzer 63125 105449 46133 0 3 0x4000082 thrsleep syz-fuzzer 63125 326893 46133 0 3 0x4000082 thrsleep syz-fuzzer 63125 243500 46133 0 3 0x4000082 thrsleep syz-fuzzer 63125 408678 46133 0 3 0x4000082 kqread syz-fuzzer 63125 209854 46133 0 3 0x4000082 thrsleep syz-fuzzer 46133 185191 41498 0 3 0x10008a pause ksh 41498 231846 10910 0 3 0x92 select sshd 10910 144626 1 0 3 0x80 select sshd 84868 503648 50036 73 3 0x100090 kqread syslogd 50036 338790 1 0 3 0x100082 netio syslogd 34063 486234 1 77 3 0x100090 poll dhclient 62973 200407 1 0 3 0x80 poll dhclient 47765 504007 0 0 2 0x14200 zerothread 93910 522957 0 0 3 0x14200 aiodoned aiodoned 76245 430123 0 0 3 0x14200 syncer update 2290 130964 0 0 3 0x14200 cleaner cleaner 68074 8224 0 0 3 0x14200 reaper reaper 1366 463412 0 0 3 0x14200 pgdaemon pagedaemon 44867 447192 0 0 3 0x14200 bored crynlk 37640 456810 0 0 3 0x14200 bored crypto 6196 400668 0 0 3 0x40014200 acpi0 acpi0 49824 476077 0 0 3 0x14200 bored softnet 15578 223986 0 0 3 0x14200 bored systqmp 21798 391320 0 0 3 0x14200 bored systq 99654 516590 0 0 3 0x40014200 bored softclock 39141 312615 0 0 3 0x40014200 idle0 5840 361979 0 0 3 0x14200 bored smr 1 268489 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 9511 6357K 7384K 78643K 15598 0 0 pcb 14 8K 8K 78643K 230 0 0 rtable 111 4K 4K 78643K 932 0 0 ifaddr 58 14K 15K 78643K 296 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 127 0 0 iov 0 0K 32K 78643K 192 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1217 76K 77K 78643K 3104 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 28 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 0K 0K 78643K 171 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 2008 0 0 sigio 0 0K 0K 78643K 38 0 0 proc 41 30K 54K 78643K 826 0 0 subproc 32 2K 2K 78643K 170 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 207 0 0 in_multi 33 2K 2K 78643K 189 0 0 ether_multi 1 0K 0K 78643K 6 0 0 mrt 0 0K 0K 78643K 1 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 481 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 93 21K 30K 78643K 5635 0 0 UVM aobj 50 2K 2K 78643K 55 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 2 0K 1K 78643K 223 0 0 NDP 12 0K 0K 78643K 92 0 0 temp 170 3535K 3615K 78643K 31264 0 0 kqueue 0 0K 0K 78643K 8 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 23 0 17 1 0 1 1 0 8 0 rtpcb 80 116 0 114 1 0 1 1 0 8 0 rtentry 112 134 0 90 2 0 2 2 0 8 0 unpcb 120 658 0 650 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 1071 0 1071 1 1 0 1 0 8 0 tcpcb 544 405 0 400 1 0 1 1 0 8 0 ipq 40 4 0 4 2 2 0 1 0 8 0 ipqe 40 10 0 10 2 2 0 1 0 8 0 inpcb 280 1077 0 1069 4 3 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 30 0 24 1 0 1 1 0 8 0 pkpcb 40 6 0 6 3 3 0 1 0 8 0 ppxss 1128 36 0 36 9 8 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 557 0 366 14 2 12 13 0 8 0 art_table 32 558 0 366 2 0 2 2 0 8 0 art_node 16 133 0 93 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 4 1 0 1 1 0 8 0 semapl 112 169 0 159 1 0 1 1 0 8 0 shmpl 112 53 0 5 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 4485 0 3077 47 1 46 47 0 8 0 ffsino 240 4485 0 3077 84 0 84 84 0 8 0 nchpl 144 7419 0 5787 62 1 61 62 0 8 0 uvmvnodes 72 5839 0 0 107 0 107 107 0 8 0 vnodes 200 5839 0 0 308 0 308 308 0 8 0 namei 1024 23295 0 23295 2 1 1 1 0 8 1 scsiplug 64 3 0 3 2 2 0 1 0 8 0 scxspl 192 26582 0 26582 14 12 2 7 0 8 2 plimitpl 152 169 0 162 1 0 1 1 0 8 0 sigapl 432 2156 0 2143 2 0 2 2 0 8 0 futexpl 56 31848 0 31848 3 2 1 1 0 8 1 knotepl 112 489 0 470 1 0 1 1 0 8 0 kqueuepl 104 364 0 362 1 0 1 1 0 8 0 pipepl 112 1234 0 1215 5 4 1 2 0 8 0 fdescpl 424 2157 0 2143 2 0 2 2 0 8 0 filepl 120 12578 0 12483 7 3 4 5 0 8 1 lockfpl 104 731 0 731 6 5 1 1 0 8 1 lockfspl 48 229 0 229 6 5 1 1 0 8 1 sessionpl 112 26 0 16 1 0 1 1 0 8 0 pgrppl 48 38 0 28 1 0 1 1 0 8 0 ucredpl 96 2364 0 2357 1 0 1 1 0 8 0 zombiepl 144 2143 0 2143 2 1 1 1 0 8 1 processpl 864 2173 0 2143 4 0 4 4 0 8 0 procpl 632 4573 0 4536 5 1 4 5 0 8 0 sosppl 128 23 0 23 6 6 0 1 0 8 0 sockpl 384 1874 0 1856 7 4 3 4 0 8 1 mcl64k 65536 314 0 314 39 38 1 33 0 8 1 mcl16k 16384 6 0 6 5 4 1 1 0 8 1 mcl12k 12288 30 0 30 8 8 0 1 0 8 0 mcl9k 9216 17 0 17 7 7 0 1 0 8 0 mcl8k 8192 30 0 30 9 8 1 1 0 8 1 mcl4k 4096 107 0 107 5 4 1 1 0 8 1 mcl2k2 2112 6 0 6 4 4 0 1 0 8 0 mcl2k 2048 62351 0 62307 14 8 6 11 0 8 0 mtagpl 80 51 0 43 4 3 1 1 0 8 0 mbufpl 256 109075 0 108988 28 21 7 23 0 8 0 bufpl 256 11543 0 5695 367 1 366 366 0 8 0 anonpl 16 209497 0 197074 128 75 53 69 0 62 0 amapchunkpl 152 10042 0 9941 33 28 5 15 0 158 0 amappl16 192 10728 0 10032 95 58 37 47 0 8 1 amappl15 184 151 0 151 1 1 0 1 0 8 0 amappl14 176 779 0 772 1 0 1 1 0 8 0 amappl13 168 345 0 345 2 2 0 1 0 8 0 amappl12 160 196 0 194 2 1 1 1 0 8 0 amappl11 152 271 0 256 1 0 1 1 0 8 0 amappl10 144 286 0 284 1 0 1 1 0 8 0 amappl9 136 758 0 755 1 0 1 1 0 8 0 amappl8 128 306 0 285 1 0 1 1 0 8 0 amappl7 120 271 0 265 1 0 1 1 0 8 0 amappl6 112 252 0 243 1 0 1 1 0 8 0 amappl5 104 384 0 372 1 0 1 1 0 8 0 amappl4 96 2071 0 2044 1 0 1 1 0 8 0 amappl3 88 1237 0 1227 1 0 1 1 0 8 0 amappl2 80 15999 0 15932 3 1 2 3 0 8 0 amappl1 72 48215 0 47809 25 16 9 19 0 8 0 amappl 80 4926 0 4892 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 54 0 5 1 0 1 1 0 8 0 uaddrrnd 24 2157 0 2143 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2157 0 2143 1 0 1 1 0 8 0 vmmpekpl 168 17972 0 17948 2 0 2 2 0 8 0 vmmpepl 168 260347 0 258614 182 100 82 100 0 357 2 vmsppl 272 2156 0 2143 4 3 1 2 0 8 0 pdppl 4096 4320 0 4286 6 1 5 6 0 8 0 pvpl 32 633766 0 618246 348 121 227 272 0 265 95 pmappl 200 2156 0 2143 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 584 0 93 15 0 15 15 0 8 0