uvm_fault(0xfffffd803f014770, 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(0xfffffd803f014770, 0x24, 0, 1) -> e frag6_input(ffff800015935228,ffff800015935234,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 end trace frame: 0xffff8000159350b0, count: 0 ddb> trace frag6_input(ffff800015935228,ffff800015935234,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 ip_deliver(ffff800015935228,ffff800015935234,2c,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:665 ip6_input_if(ffff800015935228,ffff800015935234,29,0,ffff80000069c000) at ip6_input_if+0x153a ip6_ours sys/netinet6/ip6_input.c:518 [inline] ip6_input_if(ffff800015935228,ffff800015935234,29,0,ffff80000069c000) at ip6_input_if+0x153a sys/netinet6/ip6_input.c:340 ipv6_input(ffff80000069c000,fffffd80313e9a00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000069c000,fffffd80313e9a00,18) at if_input_local+0x121 sys/net/if.c:783 ip6_output(fffffd80313e9300,ffff800000aaa980,fffffd803700c930,0,0,fffffd803700c8c0) at ip6_output+0xd35 rip6_output(fffffd80313e9300,fffffd803700d780,ffff800015935598,0) at rip6_output+0x4d7 sys/netinet6/raw_ip6.c:481 rip6_usrreq(fffffd803700d780,9,fffffd80313e9300,0,0,ffff8000ffff2508) at rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 sosend(fffffd803700d780,0,ffff8000159357c8,0,0,0) at sosend+0x660 sys/kern/uipc_socket.c:524 dofilewritev(ffff8000ffff2508,3,ffff8000159357c8,0,ffff8000159358d0) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff8000ffff2508,ffff800015935868,ffff8000159358d0) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff800015935930) at syscall+0x508 Xsyscall(6,0,c,0,3,250c0b43010) at Xsyscall+0x128 end of kernel end trace frame: 0x253a38bf560, count: -13 ddb> show registers rdi 0 rsi 0 rbp 0xffff800015935030 rbx 0x600 rdx 0 rcx 0 rax 0 r8 0x30 r9 0 r10 0xf4e6c63d79810325 r11 0x8314bbf21d1b1ca7 r12 0 r13 0xfffffd803bd9aef0 r14 0xfffffd803bd9af00 r15 0xfffffd8028a9b854 rip 0xffffffff81c4b992 frag6_input+0x762 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800015934f70 ss 0x10 frag6_input+0x762: movl 0x24(%rax),%r14d ddb> show proc PROC (syz-executor.0) pid=411066 stat=onproc flags process=0 proc=4000000 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2ee8,0xffff8000ffff2790 process=0xffff8000ffff7450 user=0xffff800015930000, vmspace=0xfffffd803f014770 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 67410 22951 1857 0 2 0 syz-executor.1 67410 16384 1857 0 3 0x4000080 fsleep syz-executor.1 96924 46752 65025 0 2 0 syz-executor.0 *96924 411066 65025 0 7 0x4000000 syz-executor.0 1857 445471 170 0 3 0x82 nanosleep syz-executor.1 65025 349686 170 0 3 0x82 nanosleep syz-executor.0 40698 283460 0 0 3 0x14200 bored sosplice 170 28148 96055 0 3 0x82 thrsleep syz-fuzzer 170 304938 96055 0 3 0x4000082 nanosleep syz-fuzzer 170 252353 96055 0 3 0x4000082 thrsleep syz-fuzzer 170 436358 96055 0 3 0x4000082 thrsleep syz-fuzzer 170 336209 96055 0 3 0x4000082 thrsleep syz-fuzzer 170 39924 96055 0 3 0x4000082 thrsleep syz-fuzzer 170 228694 96055 0 3 0x4000082 thrsleep syz-fuzzer 170 239159 96055 0 3 0x4000082 kqread syz-fuzzer 96055 481939 79487 0 3 0x10008a pause ksh 79487 251345 75665 0 3 0x92 select sshd 28276 495359 1 0 3 0x100083 ttyin getty 75665 1388 1 0 3 0x80 select sshd 82812 203832 8181 73 3 0x100090 kqread syslogd 8181 72266 1 0 3 0x100082 netio syslogd 52933 493150 0 0 2 0x14200 zerothread 92185 425980 0 0 3 0x14200 aiodoned aiodoned 33890 338314 0 0 3 0x14200 syncer update 40635 466083 0 0 3 0x14200 cleaner cleaner 78690 291219 0 0 3 0x14200 reaper reaper 39941 272059 0 0 3 0x14200 pgdaemon pagedaemon 68914 161371 0 0 3 0x14200 bored crynlk 46545 106011 0 0 3 0x14200 bored crypto 25575 472126 0 0 3 0x40014200 acpi0 acpi0 78005 183058 0 0 3 0x14200 bored softnet 87992 377127 0 0 3 0x14200 bored systqmp 47104 65387 0 0 3 0x14200 bored systq 8602 1766 0 0 3 0x40014200 bored softclock 1365 358177 0 0 3 0x40014200 idle0 76313 182634 0 0 3 0x14200 bored smr 1 164030 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 9591 6326K 14581K 78643K 39637 0 0 pcb 14 8K 8K 78643K 1159 0 0 rtable 114 4K 4K 78643K 2013 0 0 ifaddr 86 23K 27K 78643K 1117 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 568 0 0 iov 0 0K 28K 78643K 1224 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1200 75K 77K 78643K 12013 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 156 0 0 VM map 2 0K 0K 78643K 7 0 0 sem 12 0K 0K 78643K 1157 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 6 17K 25K 78643K 11413 0 0 sigio 0 0K 0K 78643K 134 0 0 proc 42 30K 54K 78643K 2641 0 0 subproc 32 2K 2K 78643K 618 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 986 0 0 in_multi 33 2K 2K 78643K 724 0 0 ether_multi 1 0K 0K 78643K 48 0 0 mrt 2 0K 0K 78643K 34 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 120 530K 530K 78643K 120 0 0 exec 0 0K 1K 78643K 1581 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 113 22K 32K 78643K 27719 0 0 UVM aobj 130 7K 7K 78643K 161 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 1005 0 0 NDP 21 0K 1K 78643K 351 0 0 temp 232 3533K 3628K 78643K 214154 0 0 kqueue 0 0K 0K 78643K 71 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 76 0 70 1 0 1 1 0 8 0 rtpcb 80 459 0 459 21 21 0 1 0 8 0 rtentry 112 429 0 384 3 1 2 2 0 8 0 unpcb 120 3763 0 3757 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 2041 0 2041 1 1 0 1 0 8 0 tcpcb 544 1936 0 1931 1 0 1 1 0 8 0 ipq 40 23 0 23 12 11 1 1 0 8 1 ipqe 40 55 0 55 12 11 1 1 0 8 1 inpcb 280 5703 0 5696 3 2 1 2 0 8 0 ip6q 72 2 0 1 2 1 1 1 0 8 0 ip6af 48 1 0 0 1 0 1 1 0 8 0 nd6 48 108 0 102 2 1 1 1 0 8 0 pkpcb 40 49 0 49 18 17 1 1 0 8 1 swfcl 56 2 0 0 1 0 1 1 0 8 0 ppxss 1128 158 0 158 40 39 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1769 0 1574 25 12 13 13 0 8 0 art_table 32 1770 0 1574 3 1 2 2 0 8 0 art_node 16 421 0 381 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 16 1 0 1 1 0 8 0 semapl 112 1155 0 1145 1 0 1 1 0 8 0 shmpl 112 159 0 31 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 19147 0 17724 47 0 47 47 0 8 0 ffsino 240 19147 0 17724 85 0 85 85 0 8 0 nchpl 144 35044 0 33419 61 0 61 61 0 8 0 uvmvnodes 72 7924 0 0 145 0 145 145 0 8 0 vnodes 200 7924 0 0 418 0 418 418 0 8 0 namei 1024 117449 0 117449 8 7 1 1 0 8 1 vmpool 520 5 0 5 2 2 0 1 0 8 0 scsiplug 64 15 0 15 8 8 0 1 0 8 0 scxspl 192 119129 0 119129 36 35 1 7 0 8 1 plimitpl 152 1130 0 1124 1 0 1 1 0 8 0 sigapl 432 11482 0 11470 2 0 2 2 0 8 0 futexpl 56 186378 0 186377 12 11 1 1 0 8 0 knotepl 112 2671 0 2652 1 0 1 1 0 8 0 kqueuepl 104 2509 0 2507 1 0 1 1 0 8 0 pipepl 112 6512 0 6493 17 16 1 2 0 8 0 fdescpl 424 11483 0 11470 2 0 2 2 0 8 0 filepl 120 70272 0 70187 36 32 4 5 0 8 1 lockfpl 104 3823 0 3823 13 12 1 1 0 8 1 lockfspl 48 1218 0 1218 13 12 1 1 0 8 1 sessionpl 112 51 0 43 1 0 1 1 0 8 0 pgrppl 48 185 0 177 1 0 1 1 0 8 0 ucredpl 96 15086 0 15079 1 0 1 1 0 8 0 zombiepl 144 11473 0 11473 1 0 1 1 0 8 1 processpl 864 11501 0 11473 4 0 4 4 0 8 0 procpl 632 25184 0 25147 4 0 4 4 0 8 0 sosppl 128 153 0 153 36 35 1 1 0 8 1 sockpl 384 10067 0 10056 25 23 2 4 0 8 0 mcl64k 65536 1902 0 1902 196 186 10 33 0 8 10 mcl16k 16384 55 0 55 31 30 1 1 0 8 1 mcl12k 12288 205 0 205 41 40 1 1 0 8 1 mcl9k 9216 130 0 130 42 41 1 1 0 8 1 mcl8k 8192 204 0 204 37 36 1 1 0 8 1 mcl4k 4096 573 0 573 16 15 1 1 0 8 1 mcl2k2 2112 76 0 76 35 35 0 1 0 8 0 mcl2k 2048 76813 0 76770 28 21 7 12 0 8 0 mtagpl 80 344 0 328 4 3 1 2 0 8 0 mbufpl 256 175054 0 174948 110 101 9 25 0 8 0 bufpl 256 36749 0 28824 497 1 496 496 0 8 0 anonpl 16 1022603 0 1010297 301 241 60 84 0 62 0 amapchunkpl 152 51488 0 51365 168 162 6 30 0 158 0 amappl16 192 58366 0 57687 350 314 36 58 0 8 1 amappl15 184 1186 0 1186 4 4 0 1 0 8 0 amappl14 176 1099 0 1093 1 0 1 1 0 8 0 amappl13 168 3071 0 3068 1 0 1 1 0 8 0 amappl12 160 833 0 830 1 0 1 1 0 8 0 amappl11 152 1906 0 1902 1 0 1 1 0 8 0 amappl10 144 3114 0 3110 1 0 1 1 0 8 0 amappl9 136 1476 0 1472 1 0 1 1 0 8 0 amappl8 128 890 0 858 5 3 2 2 0 8 0 amappl7 120 3166 0 3158 1 0 1 1 0 8 0 amappl6 112 1814 0 1803 1 0 1 1 0 8 0 amappl5 104 1273 0 1265 1 0 1 1 0 8 0 amappl4 96 12923 0 12897 1 0 1 1 0 8 0 amappl3 88 2122 0 2111 1 0 1 1 0 8 0 amappl2 80 90247 0 90179 3 1 2 3 0 8 0 amappl1 72 208505 0 208113 25 15 10 19 0 8 0 amappl 80 26048 0 26010 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 64 160 0 31 3 0 3 3 0 8 0 uaddrrnd 24 11488 0 11470 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 11488 0 11470 1 0 1 1 0 8 0 vmmpekpl 168 66988 0 66964 2 0 2 2 0 8 0 vmmpepl 168 1331828 0 1330051 498 417 81 105 0 357 0 vmsppl 272 11482 0 11470 3 2 1 2 0 8 0 pdppl 4096 22982 0 22950 6 1 5 6 0 8 0 pvpl 32 2948235 0 2932808 823 627 196 271 0 265 62 pmappl 200 11487 0 11475 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 1049 0 414 20 0 20 20 0 8 0