uvm_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(ffff800016967bc8,ffff800016967bd4,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 end trace frame: 0xffff800016967a50, count: 0 ddb> trace frag6_input(ffff800016967bc8,ffff800016967bd4,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 ip_deliver(ffff800016967bc8,ffff800016967bd4,2c,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:665 ip6_input_if(ffff800016967bc8,ffff800016967bd4,29,0,ffff80000069c000) at ip6_input_if+0x153a ip6_ours sys/netinet6/ip6_input.c:518 [inline] ip6_input_if(ffff800016967bc8,ffff800016967bd4,29,0,ffff80000069c000) at ip6_input_if+0x153a sys/netinet6/ip6_input.c:340 ipv6_input(ffff80000069c000,fffffd8030ffc100) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000069c000,fffffd8030ffc100,18) at if_input_local+0x121 sys/net/if.c:783 ip6_output(fffffd8030ffcb00,ffff800000aac180,fffffd803700d700,0,0,fffffd803700d690) at ip6_output+0xd35 rip6_output(fffffd8030ffcb00,fffffd803700ea80,ffff800016967f38,0) at rip6_output+0x4d7 sys/netinet6/raw_ip6.c:481 rip6_usrreq(fffffd803700ea80,9,fffffd8030ffcb00,0,0,ffff800014b32780) at rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 sosend(fffffd803700ea80,0,ffff800016968168,0,0,0) at sosend+0x660 sys/kern/uipc_socket.c:524 dofilewritev(ffff800014b32780,3,ffff800016968168,0,ffff800016968270) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff800014b32780,ffff800016968208,ffff800016968270) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff8000169682d0) at syscall+0x508 Xsyscall(6,0,c,0,3,e37eb217010) at Xsyscall+0x128 end of kernel end trace frame: 0xe3adb90fcb0, count: -13 ddb> show registers rdi 0 rsi 0 rbp 0xffff8000169679d0 rbx 0x600 rdx 0 rcx 0 rax 0 r8 0x30 r9 0 r10 0x41b6fb9d32340a61 r11 0x12af5ba3f2935133 r12 0 r13 0xfffffd803c73ff30 r14 0xfffffd803c73ff40 r15 0xfffffd8034534054 rip 0xffffffff811a0f62 frag6_input+0x762 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800016967910 ss 0x10 frag6_input+0x762: movl 0x24(%rax),%r14d ddb> show proc PROC (syz-executor.1) pid=475247 stat=onproc flags process=0 proc=4000000 pri=82, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff800014b32508,0xffffffff8259f160 process=0xffff8000ffffb448 user=0xffff800016963000, vmspace=0xfffffd803f014bb0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 51414 511858 12372 0 2 0 syz-executor.1 *51414 475247 12372 0 7 0x4000000 syz-executor.1 44016 44767 0 0 3 0x14200 acct acct 75525 137468 48436 0 2 0x2 syz-executor.0 12372 490242 48436 0 3 0x82 nanosleep syz-executor.1 72974 427990 0 0 3 0x14200 bored sosplice 48436 237241 27369 0 3 0x82 thrsleep syz-fuzzer 48436 101865 27369 0 3 0x4000082 nanosleep syz-fuzzer 48436 49389 27369 0 3 0x4000082 kqread syz-fuzzer 48436 509620 27369 0 3 0x4000082 thrsleep syz-fuzzer 48436 135342 27369 0 3 0x4000082 thrsleep syz-fuzzer 48436 426646 27369 0 3 0x4000082 thrsleep syz-fuzzer 48436 8928 27369 0 3 0x4000082 thrsleep syz-fuzzer 27369 167276 13006 0 3 0x10008a pause ksh 13006 458764 65015 0 3 0x92 select sshd 37028 37943 1 0 3 0x100083 ttyopn getty 65015 32302 1 0 3 0x80 select sshd 11852 183656 83182 73 3 0x100090 kqread syslogd 83182 420418 1 0 3 0x100082 netio syslogd 96065 90975 1 77 3 0x100090 poll dhclient 82856 214654 1 0 3 0x80 poll dhclient 2365 373760 0 0 2 0x14200 zerothread 82942 284026 0 0 3 0x14200 aiodoned aiodoned 19684 190791 0 0 3 0x14200 syncer update 84093 325152 0 0 3 0x14200 cleaner cleaner 4698 482393 0 0 3 0x14200 reaper reaper 23241 291950 0 0 3 0x14200 pgdaemon pagedaemon 13468 371191 0 0 3 0x14200 bored crynlk 8949 469226 0 0 3 0x14200 bored crypto 19565 218873 0 0 3 0x40014200 acpi0 acpi0 86426 236436 0 0 3 0x14200 bored softnet 75588 107306 0 0 3 0x14200 bored systqmp 32509 432224 0 0 3 0x14200 bored systq 93254 32514 0 0 3 0x40014200 bored softclock 85325 380964 0 0 3 0x40014200 idle0 46141 309661 0 0 3 0x14200 bored smr 1 449727 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 9532 6362K 6990K 78643K 14788 0 0 pcb 14 8K 8K 78643K 167 0 0 rtable 111 4K 4K 78643K 627 0 0 ifaddr 67 14K 15K 78643K 202 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 93 0 0 iov 0 0K 28K 78643K 174 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1208 76K 77K 78643K 2680 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 30 0 0 VM map 2 0K 0K 78643K 4 0 0 sem 12 0K 0K 78643K 152 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 1580 0 0 sigio 0 0K 0K 78643K 24 0 0 proc 42 30K 54K 78643K 677 0 0 subproc 32 2K 2K 78643K 102 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 166 0 0 in_multi 33 2K 2K 78643K 141 0 0 ether_multi 1 0K 0K 78643K 9 0 0 mrt 0 0K 0K 78643K 2 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 72 318K 318K 78643K 72 0 0 exec 0 0K 1K 78643K 381 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 4607 0 0 UVM aobj 67 4K 4K 78643K 77 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 156 0 0 NDP 15 0K 0K 78643K 60 0 0 temp 191 3536K 3605K 78643K 53219 0 0 kqueue 0 0K 0K 78643K 10 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 80 0 78 1 0 1 1 0 8 0 rtentry 112 91 0 47 2 0 2 2 0 8 0 unpcb 120 580 0 572 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 1060 0 1060 1 1 0 1 0 8 0 tcpcb 544 271 0 266 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 280 835 0 827 3 2 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 9 0 9 4 3 1 1 0 8 1 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 24 0 24 8 8 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 374 0 183 12 0 12 12 0 8 0 art_table 32 375 0 183 2 0 2 2 0 8 0 art_node 16 88 0 48 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 7 1 0 1 1 0 8 0 semapl 112 148 0 138 1 0 1 1 0 8 0 shmpl 112 75 0 10 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3849 0 2438 46 0 46 46 0 8 0 ffsino 240 3849 0 2438 84 0 84 84 0 8 0 nchpl 144 6221 0 4600 61 0 61 61 0 8 0 uvmvnodes 72 4922 0 0 90 0 90 90 0 8 0 vnodes 200 4922 0 0 260 0 260 260 0 8 0 namei 1024 19316 0 19316 2 1 1 1 0 8 1 vmpool 520 2 0 2 1 1 0 1 0 8 0 scxspl 192 22229 0 22229 9 8 1 7 0 8 1 plimitpl 152 157 0 150 1 0 1 1 0 8 0 sigapl 432 1739 0 1726 2 0 2 2 0 8 0 futexpl 56 25616 0 25616 3 2 1 1 0 8 1 knotepl 112 403 0 384 1 0 1 1 0 8 0 kqueuepl 104 355 0 353 1 0 1 1 0 8 0 pipepl 112 890 0 871 2 1 1 2 0 8 0 fdescpl 424 1740 0 1726 2 0 2 2 0 8 0 filepl 120 10071 0 9976 5 1 4 4 0 8 1 lockfpl 104 502 0 502 3 2 1 1 0 8 1 lockfspl 48 177 0 177 3 2 1 1 0 8 1 sessionpl 112 21 0 11 1 0 1 1 0 8 0 pgrppl 48 35 0 25 1 0 1 1 0 8 0 ucredpl 96 1853 0 1846 1 0 1 1 0 8 0 zombiepl 144 1726 0 1726 1 0 1 1 0 8 1 processpl 864 1756 0 1726 4 0 4 4 0 8 0 procpl 632 3706 0 3669 4 0 4 4 0 8 0 sosppl 128 18 0 18 6 5 1 1 0 8 1 sockpl 384 1520 0 1502 5 2 3 3 0 8 1 mcl64k 65536 325 0 325 37 36 1 33 0 8 1 mcl16k 16384 7 0 7 6 5 1 1 0 8 1 mcl12k 12288 29 0 29 4 3 1 1 0 8 1 mcl9k 9216 29 0 29 4 3 1 1 0 8 1 mcl8k 8192 28 0 28 8 7 1 1 0 8 1 mcl4k 4096 95 0 95 4 3 1 1 0 8 1 mcl2k2 2112 8 0 8 4 3 1 1 0 8 1 mcl2k 2048 62581 0 62538 17 11 6 12 0 8 0 mtagpl 80 55 0 38 2 1 1 1 0 8 0 mbufpl 256 107030 0 106923 30 22 8 25 0 8 0 bufpl 256 11672 0 4585 445 1 444 444 0 8 0 anonpl 16 192505 0 179945 97 42 55 68 0 62 0 amapchunkpl 152 8353 0 8252 32 27 5 15 0 158 0 amappl16 192 9761 0 9068 106 69 37 47 0 8 2 amappl14 176 79 0 72 1 0 1 1 0 8 0 amappl13 168 22 0 21 2 1 1 1 0 8 0 amappl12 160 487 0 486 1 0 1 1 0 8 0 amappl11 152 367 0 354 1 0 1 1 0 8 0 amappl10 144 186 0 184 1 0 1 1 0 8 0 amappl9 136 1233 0 1227 1 0 1 1 0 8 0 amappl8 128 786 0 766 1 0 1 1 0 8 0 amappl7 120 156 0 151 1 0 1 1 0 8 0 amappl6 112 341 0 335 1 0 1 1 0 8 0 amappl5 104 650 0 638 1 0 1 1 0 8 0 amappl4 96 1972 0 1944 1 0 1 1 0 8 0 amappl3 88 234 0 224 1 0 1 1 0 8 0 amappl2 80 12896 0 12831 3 1 2 3 0 8 0 amappl1 72 40185 0 39779 25 15 10 19 0 8 0 amappl 80 4006 0 3972 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 76 0 10 2 0 2 2 0 8 0 uaddrrnd 24 1742 0 1726 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1742 0 1726 1 0 1 1 0 8 0 vmmpekpl 168 13923 0 13899 2 0 2 2 0 8 0 vmmpepl 168 210638 0 208905 163 81 82 102 0 357 5 vmsppl 272 1739 0 1726 3 2 1 2 0 8 0 pdppl 4096 3490 0 3456 7 2 5 6 0 8 0 pvpl 32 584157 0 568494 313 109 204 268 0 265 73 pmappl 200 1741 0 1728 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 662 0 92 17 0 17 17 0 8 0