uvm_fault(0xfffffd803f014dd0, 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(0xfffffd803f014dd0, 0x24, 0, 1) -> e frag6_input(ffff800017770488,ffff800017770494,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 end trace frame: 0xffff800017770310, count: 0 ddb> trace frag6_input(ffff800017770488,ffff800017770494,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 ip_deliver(ffff800017770488,ffff800017770494,2c,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:665 ip6_input_if(ffff800017770488,ffff800017770494,29,0,ffff80000069c000) at ip6_input_if+0x153a ip6_ours sys/netinet6/ip6_input.c:518 [inline] ip6_input_if(ffff800017770488,ffff800017770494,29,0,ffff80000069c000) at ip6_input_if+0x153a sys/netinet6/ip6_input.c:340 ipv6_input(ffff80000069c000,fffffd8031475d00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000069c000,fffffd8031475d00,18) at if_input_local+0x121 sys/net/if.c:783 ip6_output(fffffd8031475400,ffff800000aa1d80,fffffd8036fdd930,0,0,fffffd8036fdd8c0) at ip6_output+0xd35 rip6_output(fffffd8031475400,fffffd80363c9c08,ffff8000177707f8,0) at rip6_output+0x4d7 sys/netinet6/raw_ip6.c:481 rip6_usrreq(fffffd80363c9c08,9,fffffd8031475400,0,0,ffff8000ffff33d8) at rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 sosend(fffffd80363c9c08,0,ffff800017770a28,0,0,0) at sosend+0x660 sys/kern/uipc_socket.c:524 dofilewritev(ffff8000ffff33d8,3,ffff800017770a28,0,ffff800017770b30) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff8000ffff33d8,ffff800017770ac8,ffff800017770b30) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff800017770b90) at syscall+0x508 Xsyscall(6,0,c,0,3,bdcae0d1010) at Xsyscall+0x128 end of kernel end trace frame: 0xbdf97d529a0, count: -13 ddb> show registers rdi 0 rsi 0 rbp 0xffff800017770290 rbx 0x600 rdx 0 rcx 0 rax 0 r8 0x30 r9 0 r10 0xbc1b4563c3d7d399 r11 0xcb187136232741e3 r12 0 r13 0xfffffd802d2cdeb0 r14 0xfffffd802d2cdec0 r15 0xfffffd80047b5854 rip 0xffffffff81c4b992 frag6_input+0x762 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff8000177701d0 ss 0x10 frag6_input+0x762: movl 0x24(%rax),%r14d ddb> show proc PROC (syz-executor.1) pid=455115 stat=onproc flags process=0 proc=4000000 pri=82, usrpri=82, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff29f8,0xffffffff82570880 process=0xffff8000ffff66d0 user=0xffff80001776b000, vmspace=0xfffffd803f014dd0 estcpu=32, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 10296 152881 44524 0 2 0 syz-executor.1 *10296 455115 44524 0 7 0x4000000 syz-executor.1 44524 208860 29551 0 3 0x82 nanosleep syz-executor.1 25910 467887 0 0 3 0x14200 acct acct 69390 457632 29551 0 2 0x2 syz-executor.0 76186 51729 1 0 3 0x100083 ttyin getty 62081 378443 0 0 3 0x14200 bored sosplice 29551 34556 50696 0 3 0x82 thrsleep syz-fuzzer 29551 259698 50696 0 3 0x4000082 nanosleep syz-fuzzer 29551 65889 50696 0 3 0x4000082 kqread syz-fuzzer 29551 467415 50696 0 3 0x4000082 thrsleep syz-fuzzer 29551 469798 50696 0 3 0x4000082 thrsleep syz-fuzzer 29551 492143 50696 0 3 0x4000082 thrsleep syz-fuzzer 29551 359977 50696 0 3 0x4000082 thrsleep syz-fuzzer 50696 394707 55627 0 3 0x10008a pause ksh 55627 222345 59584 0 3 0x92 select sshd 59584 244003 1 0 3 0x80 select sshd 79210 431111 19438 73 3 0x100090 kqread syslogd 19438 331312 1 0 3 0x100082 netio syslogd 41321 452067 1 77 3 0x100090 poll dhclient 46244 361923 1 0 3 0x80 poll dhclient 75481 253539 0 0 2 0x14200 zerothread 90299 379001 0 0 3 0x14200 aiodoned aiodoned 12961 432080 0 0 3 0x14200 syncer update 60076 83798 0 0 3 0x14200 cleaner cleaner 62355 427385 0 0 3 0x14200 reaper reaper 91872 22727 0 0 3 0x14200 pgdaemon pagedaemon 48327 55065 0 0 3 0x14200 bored crynlk 86544 503819 0 0 3 0x14200 bored crypto 54754 138418 0 0 3 0x40014200 acpi0 acpi0 16564 412644 0 0 3 0x14200 bored softnet 78221 449668 0 0 3 0x14200 bored systqmp 33336 481865 0 0 3 0x14200 bored systq 40719 113452 0 0 3 0x40014200 bored softclock 8107 171175 0 0 3 0x40014200 idle0 33464 482469 0 0 3 0x14200 bored smr 1 54177 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 9567 6388K 7660K 78643K 32083 0 0 pcb 14 8K 8K 78643K 917 0 0 rtable 114 4K 4K 78643K 2779 0 0 ifaddr 75 18K 20K 78643K 875 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 404 0 0 iov 0 0K 40K 78643K 883 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1202 76K 77K 78643K 9158 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 111 0 0 VM map 2 0K 0K 78643K 12 0 0 sem 12 0K 0K 78643K 864 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 8386 0 0 sigio 0 0K 0K 78643K 124 0 0 proc 43 30K 54K 78643K 2348 0 0 subproc 32 2K 2K 78643K 561 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 715 0 0 in_multi 33 2K 2K 78643K 650 0 0 ether_multi 1 0K 0K 78643K 40 0 0 mrt 0 0K 0K 78643K 21 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 102 450K 450K 78643K 102 0 0 exec 0 0K 1K 78643K 1269 0 0 pfkey data 0 0K 4K 78643K 2 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 110 22K 39K 78643K 20819 0 0 UVM aobj 130 4K 4K 78643K 150 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 866 0 0 NDP 18 0K 1K 78643K 281 0 0 temp 212 3536K 4176K 78643K 171670 0 0 kqueue 0 0K 0K 78643K 54 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 68 0 62 1 0 1 1 0 8 0 rtpcb 80 367 0 365 1 0 1 1 0 8 0 rtentry 112 398 0 353 2 0 2 2 0 8 0 unpcb 120 2805 0 2797 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 2226 0 2226 1 1 0 1 0 8 0 tcpcb 544 1603 0 1598 1 0 1 1 0 8 0 ipq 40 10 0 10 4 4 0 1 0 8 0 ipqe 40 24 0 24 4 4 0 1 0 8 0 inpcb 280 4542 0 4534 6 5 1 2 0 8 0 ip6q 72 4 0 3 3 2 1 1 0 8 0 ip6af 48 3 0 2 2 1 1 1 0 8 0 nd6 48 99 0 93 1 0 1 1 0 8 0 pkpcb 40 31 0 31 13 13 0 1 0 8 0 swfcl 56 6 0 0 1 0 1 1 0 8 0 ppxss 1128 133 0 133 30 29 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1613 0 1418 20 7 13 13 0 8 0 art_table 32 1614 0 1418 2 0 2 2 0 8 0 art_node 16 386 0 346 1 0 1 1 0 8 0 sysvmsgpl 40 52 0 33 1 0 1 1 0 8 0 semapl 112 862 0 852 1 0 1 1 0 8 0 shmpl 112 148 0 20 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 14334 0 12913 48 1 47 47 0 8 0 ffsino 240 14334 0 12913 85 0 85 85 0 8 0 nchpl 144 25997 0 24371 62 1 61 62 0 8 0 uvmvnodes 72 7628 0 0 139 0 139 139 0 8 0 vnodes 200 7628 0 0 402 0 402 402 0 8 0 namei 1024 86344 0 86344 8 7 1 1 0 8 1 vmpool 520 10 0 10 4 4 0 1 0 8 0 scsiplug 64 12 0 12 9 9 0 1 0 8 0 scxspl 192 89424 0 89424 25 24 1 7 0 8 1 plimitpl 152 715 0 708 1 0 1 1 0 8 0 sigapl 432 8471 0 8458 2 0 2 2 0 8 0 futexpl 56 136053 0 136053 8 7 1 1 0 8 1 knotepl 112 2148 0 2129 1 0 1 1 0 8 0 kqueuepl 104 1880 0 1878 1 0 1 1 0 8 0 pipepl 112 4764 0 4745 13 12 1 2 0 8 0 fdescpl 424 8472 0 8458 2 0 2 2 0 8 0 filepl 120 50756 0 50661 12 8 4 5 0 8 1 lockfpl 104 2910 0 2910 10 9 1 1 0 8 1 lockfspl 48 961 0 961 10 9 1 1 0 8 1 sessionpl 112 55 0 45 1 0 1 1 0 8 0 pgrppl 48 131 0 121 1 0 1 1 0 8 0 ucredpl 96 10226 0 10218 1 0 1 1 0 8 0 zombiepl 144 8459 0 8459 2 1 1 1 0 8 1 processpl 864 8489 0 8459 4 0 4 4 0 8 0 procpl 632 18593 0 18556 4 0 4 4 0 8 0 sosppl 128 118 0 118 26 25 1 1 0 8 1 sockpl 384 7806 0 7788 15 12 3 4 0 8 1 mcl64k 65536 2023 0 2023 179 179 0 33 0 8 0 mcl16k 16384 35 0 35 22 22 0 1 0 8 0 mcl12k 12288 160 0 160 23 22 1 1 0 8 1 mcl9k 9216 93 0 93 27 26 1 1 0 8 1 mcl8k 8192 156 0 156 26 26 0 1 0 8 0 mcl4k 4096 409 0 409 12 11 1 1 0 8 1 mcl2k2 2112 61 0 61 26 25 1 1 0 8 1 mcl2k 2048 71826 0 71779 22 15 7 11 0 8 0 mtagpl 80 219 0 208 5 4 1 1 0 8 0 mbufpl 256 160174 0 160072 93 83 10 23 0 8 0 bufpl 256 28102 0 20222 493 0 493 493 0 8 0 anonpl 16 744808 0 734367 234 177 57 70 0 62 1 amapchunkpl 152 39196 0 39093 162 139 23 29 0 158 18 amappl16 192 41843 0 41135 249 212 37 48 0 8 1 amappl15 184 431 0 429 5 4 1 1 0 8 0 amappl14 176 1008 0 1001 1 0 1 1 0 8 0 amappl13 168 2883 0 2883 7 7 0 1 0 8 0 amappl12 160 938 0 936 1 0 1 1 0 8 0 amappl11 152 1675 0 1662 1 0 1 1 0 8 0 amappl10 144 855 0 855 20 19 1 1 0 8 1 amappl9 136 2067 0 2063 1 0 1 1 0 8 0 amappl8 128 1565 0 1531 4 2 2 2 0 8 0 amappl7 120 870 0 863 1 0 1 1 0 8 0 amappl6 112 1565 0 1556 1 0 1 1 0 8 0 amappl5 104 1366 0 1356 1 0 1 1 0 8 0 amappl4 96 8528 0 8497 1 0 1 1 0 8 0 amappl3 88 1638 0 1626 1 0 1 1 0 8 0 amappl2 80 67297 0 67228 3 1 2 3 0 8 0 amappl1 72 158294 0 157889 25 16 9 19 0 8 0 amappl 80 19314 0 19279 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 64 149 0 20 3 0 3 3 0 8 0 uaddrrnd 24 8482 0 8458 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8482 0 8458 1 0 1 1 0 8 0 vmmpekpl 168 52151 0 52126 2 0 2 2 0 8 0 vmmpepl 168 988847 0 987080 447 344 103 106 0 357 20 vmsppl 272 8471 0 8458 5 4 1 2 0 8 0 pdppl 4096 16970 0 16936 6 1 5 6 0 8 0 pvpl 32 2277663 0 2264109 690 555 135 273 0 265 2 pmappl 200 8481 0 8468 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 978 0 357 20 1 19 19 0 8 0