uvm_fault(0xfffffd803f013ee0, 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(0xfffffd803f013ee0, 0x24, 0, 1) -> e frag6_input(ffff800017b774c8,ffff800017b774d4,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 end trace frame: 0xffff800017b77350, count: 0 ddb> trace frag6_input(ffff800017b774c8,ffff800017b774d4,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 ip_deliver(ffff800017b774c8,ffff800017b774d4,2c,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:665 ip6_input_if(ffff800017b774c8,ffff800017b774d4,29,0,ffff80000069c000) at ip6_input_if+0x153a ip6_ours sys/netinet6/ip6_input.c:518 [inline] ip6_input_if(ffff800017b774c8,ffff800017b774d4,29,0,ffff80000069c000) at ip6_input_if+0x153a sys/netinet6/ip6_input.c:340 ipv6_input(ffff80000069c000,fffffd8035192700) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000069c000,fffffd8035192700,18) at if_input_local+0x121 sys/net/if.c:783 ip6_output(fffffd8035192c00,ffff800000a89900,fffffd803b414700,0,0,fffffd803b414690) at ip6_output+0xd35 rip6_output(fffffd8035192c00,fffffd803b415300,ffff800017b77838,0) at rip6_output+0x4d7 sys/netinet6/raw_ip6.c:481 rip6_usrreq(fffffd803b415300,9,fffffd8035192c00,0,0,ffff8000ffff2290) at rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 sosend(fffffd803b415300,0,ffff800017b77a68,0,0,0) at sosend+0x660 sys/kern/uipc_socket.c:524 dofilewritev(ffff8000ffff2290,3,ffff800017b77a68,0,ffff800017b77b70) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff8000ffff2290,ffff800017b77b08,ffff800017b77b70) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff800017b77bd0) at syscall+0x508 Xsyscall(6,0,c,0,3,32a251f3010) at Xsyscall+0x128 end of kernel end trace frame: 0x32cd4ad5ab0, count: -13 ddb> show registers rdi 0 rsi 0 rbp 0xffff800017b772d0 rbx 0x600 rdx 0 rcx 0 rax 0 r8 0x30 r9 0 r10 0x52820cd894fc21a3 r11 0x9bb58db7b599f6a9 r12 0 r13 0xfffffd8030394f30 r14 0xfffffd8030394f40 r15 0xfffffd803be4e054 rip 0xffffffff8195c922 frag6_input+0x762 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800017b77210 ss 0x10 frag6_input+0x762: movl 0x24(%rax),%r14d ddb> show proc PROC (syz-executor.0) pid=148337 stat=onproc flags process=0 proc=4000000 pri=78, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff33d8,0xffffffff825604b0 process=0xffff8000ffffa368 user=0xffff800017b72000, vmspace=0xfffffd803f013ee0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 12345 388965 91579 0 2 0 syz-executor.0 *12345 148337 91579 0 7 0x4000000 syz-executor.0 91579 159540 98846 0 3 0x82 nanosleep syz-executor.0 60490 492627 98846 0 2 0x2 syz-executor.1 2774 113524 0 0 3 0x14200 acct acct 87535 419103 0 0 3 0x14200 bored sosplice 98846 160915 98929 0 3 0x82 thrsleep syz-fuzzer 98846 241848 98929 0 3 0x4000082 nanosleep syz-fuzzer 98846 468087 98929 0 3 0x4000082 thrsleep syz-fuzzer 98846 172729 98929 0 3 0x4000082 thrsleep syz-fuzzer 98846 424189 98929 0 3 0x4000082 thrsleep syz-fuzzer 98846 262351 98929 0 3 0x4000082 kqread syz-fuzzer 98846 502104 98929 0 3 0x4000082 thrsleep syz-fuzzer 98929 368157 70255 0 3 0x10008a pause ksh 70255 240824 40972 0 3 0x92 select sshd 74294 221071 1 0 3 0x100083 ttyin getty 40972 252673 1 0 3 0x80 select sshd 92669 161923 17361 73 3 0x100090 kqread syslogd 17361 311425 1 0 3 0x100082 netio syslogd 18825 11437 1 77 3 0x100090 poll dhclient 72409 89844 1 0 3 0x80 poll dhclient 73261 125331 0 0 2 0x14200 zerothread 81535 473584 0 0 3 0x14200 aiodoned aiodoned 70136 281759 0 0 3 0x14200 syncer update 37285 89698 0 0 3 0x14200 cleaner cleaner 42631 143121 0 0 3 0x14200 reaper reaper 20745 81496 0 0 3 0x14200 pgdaemon pagedaemon 45641 92106 0 0 3 0x14200 bored crynlk 49600 122867 0 0 3 0x14200 bored crypto 81613 45090 0 0 3 0x40014200 acpi0 acpi0 47466 450128 0 0 3 0x14200 bored softnet 18946 205089 0 0 3 0x14200 bored systqmp 93333 432580 0 0 3 0x14200 bored systq 93208 325316 0 0 3 0x40014200 bored softclock 20292 451843 0 0 3 0x40014200 idle0 1672 110780 0 0 3 0x14200 bored smr 1 159397 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 9502 6337K 7236K 78643K 13526 0 0 pcb 14 8K 8K 78643K 192 0 0 rtable 108 3K 4K 78643K 558 0 0 ifaddr 55 13K 14K 78643K 149 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 68 0 0 iov 0 0K 24K 78643K 113 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1221 77K 77K 78643K 2256 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 15 0 0 VM map 2 0K 0K 78643K 4 0 0 sem 12 0K 0K 78643K 138 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 1196 0 0 sigio 0 0K 0K 78643K 18 0 0 proc 42 30K 54K 78643K 638 0 0 subproc 32 2K 2K 78643K 119 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 112 0 0 in_multi 33 2K 2K 78643K 133 0 0 ether_multi 1 0K 0K 78643K 5 0 0 mrt 0 0K 0K 78643K 3 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 84 371K 371K 78643K 84 0 0 exec 0 0K 1K 78643K 339 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 86 20K 26K 78643K 3688 0 0 UVM aobj 51 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 0K 78643K 135 0 0 NDP 11 0K 0K 78643K 46 0 0 temp 162 3535K 3607K 78643K 33713 0 0 kqueue 0 0K 0K 78643K 9 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 17 0 11 1 0 1 1 0 8 0 rtpcb 80 79 0 77 1 0 1 1 0 8 0 rtentry 112 101 0 57 2 0 2 2 0 8 0 unpcb 120 349 0 341 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 4082 0 4082 1 1 0 1 0 8 0 tcpcb 544 235 0 230 1 0 1 1 0 8 0 ipq 40 4 0 4 2 1 1 1 0 8 1 ipqe 40 8 0 8 2 1 1 1 0 8 1 inpcb 280 781 0 771 3 1 2 2 0 8 1 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 21 0 15 1 0 1 1 0 8 0 pkpcb 40 9 0 9 4 3 1 1 0 8 1 ppxss 1128 13 0 13 4 3 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 415 0 224 12 0 12 12 0 8 0 art_table 32 416 0 224 2 0 2 2 0 8 0 art_node 16 100 0 60 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 10 1 0 1 1 0 8 0 semapl 112 136 0 126 1 0 1 1 0 8 0 shmpl 112 53 0 4 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3162 0 1747 47 1 46 47 0 8 0 ffsino 240 3162 0 1747 84 0 84 84 0 8 0 nchpl 144 5005 0 3374 61 0 61 61 0 8 0 uvmvnodes 72 3975 0 0 73 0 73 73 0 8 0 vnodes 200 3975 0 0 210 0 210 210 0 8 0 namei 1024 14874 0 14874 3 2 1 1 0 8 1 vmpool 520 2 0 2 1 1 0 1 0 8 0 scsiplug 64 8 0 8 3 2 1 1 0 8 1 scxspl 192 14722 0 14722 14 13 1 7 0 8 1 plimitpl 152 73 0 66 1 0 1 1 0 8 0 sigapl 432 1352 0 1339 2 0 2 2 0 8 0 futexpl 56 18265 0 18265 2 1 1 1 0 8 1 knotepl 112 342 0 323 1 0 1 1 0 8 0 kqueuepl 104 258 0 256 1 0 1 1 0 8 0 pipepl 112 734 0 715 1 0 1 1 0 8 0 fdescpl 424 1353 0 1339 2 0 2 2 0 8 0 filepl 120 7597 0 7501 4 0 4 4 0 8 1 lockfpl 104 365 0 365 3 2 1 1 0 8 1 lockfspl 48 129 0 129 3 2 1 1 0 8 1 sessionpl 112 22 0 12 1 0 1 1 0 8 0 pgrppl 48 38 0 28 1 0 1 1 0 8 0 ucredpl 96 1138 0 1131 1 0 1 1 0 8 0 zombiepl 144 1339 0 1339 2 1 1 1 0 8 1 processpl 864 1369 0 1339 4 0 4 4 0 8 0 procpl 632 2763 0 2726 4 0 4 4 0 8 0 sosppl 128 5 0 5 2 1 1 1 0 8 1 sockpl 384 1238 0 1220 4 1 3 3 0 8 1 mcl64k 65536 22 0 22 4 3 1 1 0 8 1 mcl16k 16384 5 0 5 4 3 1 1 0 8 1 mcl12k 12288 14 0 14 4 3 1 1 0 8 1 mcl9k 9216 12 0 12 4 3 1 1 0 8 1 mcl8k 8192 16 0 16 5 4 1 1 0 8 1 mcl4k 4096 55 0 55 4 3 1 1 0 8 1 mcl2k2 2112 2 0 2 2 2 0 1 0 8 0 mcl2k 2048 59221 0 59177 18 11 7 14 0 8 1 mtagpl 80 38 0 34 2 1 1 1 0 8 0 mbufpl 256 101092 0 101004 11 3 8 11 0 8 1 bufpl 256 10268 0 4783 344 0 344 344 0 8 0 anonpl 16 138064 0 127071 85 28 57 66 0 62 5 amapchunkpl 152 6988 0 6887 31 24 7 29 0 158 0 amappl16 192 6630 0 5951 67 27 40 47 0 8 5 amappl15 184 8 0 8 1 1 0 1 0 8 0 amappl14 176 153 0 148 1 0 1 1 0 8 0 amappl13 168 68 0 66 2 1 1 1 0 8 0 amappl12 160 446 0 440 1 0 1 1 0 8 0 amappl11 152 488 0 477 1 0 1 1 0 8 0 amappl10 144 197 0 195 1 0 1 1 0 8 0 amappl9 136 626 0 622 1 0 1 1 0 8 0 amappl8 128 195 0 171 1 0 1 1 0 8 0 amappl7 120 172 0 166 1 0 1 1 0 8 0 amappl6 112 455 0 449 1 0 1 1 0 8 0 amappl5 104 619 0 609 1 0 1 1 0 8 0 amappl4 96 1389 0 1362 1 0 1 1 0 8 0 amappl3 88 523 0 513 1 0 1 1 0 8 0 amappl2 80 9695 0 9627 3 1 2 3 0 8 0 amappl1 72 33474 0 33067 25 16 9 19 0 8 0 amappl 80 3078 0 3044 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 4 1 0 1 1 0 8 0 uaddrrnd 24 1355 0 1339 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1355 0 1339 1 0 1 1 0 8 0 vmmpekpl 168 12625 0 12597 2 0 2 2 0 8 0 vmmpepl 168 164681 0 162956 166 66 100 123 0 357 23 vmsppl 272 1352 0 1339 3 2 1 2 0 8 0 pdppl 4096 2716 0 2682 6 1 5 6 0 8 0 pvpl 32 373476 0 359481 186 40 146 165 0 265 18 pmappl 200 1354 0 1341 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 505 0 34 14 0 14 14 0 8 0