uvm_fault(0xfffffd803f013440, 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(0xfffffd803f013440, 0x24, 0, 1) -> e frag6_input(ffff800018b77248,ffff800018b77254,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 end trace frame: 0xffff800018b770d0, count: 0 ddb> trace frag6_input(ffff800018b77248,ffff800018b77254,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 ip_deliver(ffff800018b77248,ffff800018b77254,2c,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:665 ip6_input_if(ffff800018b77248,ffff800018b77254,29,0,ffff80000069c000) at ip6_input_if+0x153a ip6_ours sys/netinet6/ip6_input.c:518 [inline] ip6_input_if(ffff800018b77248,ffff800018b77254,29,0,ffff80000069c000) at ip6_input_if+0x153a sys/netinet6/ip6_input.c:340 ipv6_input(ffff80000069c000,fffffd8034ebdf00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000069c000,fffffd8034ebdf00,18) at if_input_local+0x121 sys/net/if.c:783 ip6_output(fffffd8034ebdb00,ffff800000a7c400,fffffd803e914b60,0,0,fffffd803e914af0) at ip6_output+0xd35 rip6_output(fffffd8034ebdb00,fffffd803e915600,ffff800018b775b8,0) at rip6_output+0x4d7 sys/netinet6/raw_ip6.c:481 rip6_usrreq(fffffd803e915600,9,fffffd8034ebdb00,0,0,ffff8000ffff2290) at rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 sosend(fffffd803e915600,0,ffff800018b777e8,0,0,0) at sosend+0x660 sys/kern/uipc_socket.c:524 dofilewritev(ffff8000ffff2290,3,ffff800018b777e8,0,ffff800018b778f0) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff8000ffff2290,ffff800018b77888,ffff800018b778f0) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff800018b77950) at syscall+0x508 Xsyscall(6,0,c,0,3,3419e078010) at Xsyscall+0x128 end of kernel end trace frame: 0x343d647c9a0, count: -13 ddb> show registers rdi 0 rsi 0 rbp 0xffff800018b77050 rbx 0x600 rdx 0 rcx 0 rax 0 r8 0x30 r9 0 r10 0x939b8f85d3dc6f70 r11 0xc83edcdf94c36c8c r12 0 r13 0xfffffd8038721f30 r14 0xfffffd8038721f40 r15 0xfffffd800479e054 rip 0xffffffff8195c922 frag6_input+0x762 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800018b76f90 ss 0x10 frag6_input+0x762: movl 0x24(%rax),%r14d ddb> show proc PROC (syz-executor.0) pid=351287 stat=onproc flags process=0 proc=4000000 pri=81, usrpri=81, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff33d8,0xffffffff825604b0 process=0xffff8000148a3b18 user=0xffff800018b72000, vmspace=0xfffffd803f013440 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 57400 5636 26469 0 2 0 syz-executor.0 *57400 351287 26469 0 7 0x4000000 syz-executor.0 87393 148798 24577 0 3 0x80 nanosleep syz-executor.1 87393 233501 24577 0 3 0x4000080 nanosleep syz-executor.1 87393 520027 24577 0 3 0x4000080 fsleep syz-executor.1 24577 339552 37406 0 3 0x82 nanosleep syz-executor.1 26469 48987 37406 0 3 0x82 nanosleep syz-executor.0 75070 206018 0 0 3 0x14200 acct acct 51939 393999 0 0 3 0x14200 bored sosplice 37406 145715 96384 0 3 0x82 thrsleep syz-fuzzer 37406 320840 96384 0 3 0x4000082 thrsleep syz-fuzzer 37406 461378 96384 0 3 0x4000082 thrsleep syz-fuzzer 37406 266278 96384 0 3 0x4000082 thrsleep syz-fuzzer 37406 256915 96384 0 3 0x4000082 thrsleep syz-fuzzer 37406 467189 96384 0 3 0x4000082 kqread syz-fuzzer 37406 263903 96384 0 3 0x4000082 thrsleep syz-fuzzer 96384 13236 93864 0 3 0x10008a pause ksh 93864 123173 28756 0 3 0x92 select sshd 3369 182325 1 0 3 0x100083 ttyin getty 28756 113827 1 0 3 0x80 select sshd 45628 25927 88866 73 3 0x100090 kqread syslogd 88866 291660 1 0 3 0x100082 netio syslogd 7445 464827 1 77 3 0x100090 poll dhclient 61690 497643 1 0 3 0x80 poll dhclient 4503 338941 0 0 2 0x14200 zerothread 20732 434246 0 0 3 0x14200 aiodoned aiodoned 44316 69121 0 0 3 0x14200 syncer update 79873 432589 0 0 3 0x14200 cleaner cleaner 17219 65845 0 0 3 0x14200 reaper reaper 93931 332668 0 0 3 0x14200 pgdaemon pagedaemon 17065 152775 0 0 3 0x14200 bored crynlk 14857 89196 0 0 3 0x14200 bored crypto 25935 488904 0 0 3 0x40014200 acpi0 acpi0 37093 175213 0 0 3 0x14200 bored softnet 18919 294165 0 0 3 0x14200 bored systqmp 18092 385965 0 0 3 0x14200 bored systq 72604 386988 0 0 3 0x40014200 bored softclock 46778 419138 0 0 3 0x40014200 idle0 71999 392433 0 0 3 0x14200 bored smr 1 460305 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 9516 6340K 7032K 78643K 15719 0 0 pcb 14 8K 8K 78643K 285 0 0 rtable 111 4K 4K 78643K 859 0 0 ifaddr 61 14K 16K 78643K 323 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 58 0 0 iov 0 0K 24K 78643K 244 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1209 76K 77K 78643K 3127 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 31 0 0 VM map 2 0K 0K 78643K 9 0 0 sem 12 1K 1K 78643K 264 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 6 17K 25K 78643K 3085 0 0 sigio 0 0K 0K 78643K 42 0 0 proc 41 30K 54K 78643K 725 0 0 subproc 32 2K 2K 78643K 107 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 282 0 0 in_multi 33 2K 2K 78643K 228 0 0 ether_multi 1 0K 0K 78643K 24 0 0 mrt 0 0K 0K 78643K 13 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 416 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 97 21K 25K 78643K 7687 0 0 UVM aobj 48 2K 3K 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 228 0 0 NDP 13 0K 0K 78643K 93 0 0 temp 176 3531K 3643K 78643K 20160 0 0 kqueue 0 0K 0K 78643K 19 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 80 106 0 104 1 0 1 1 0 8 0 rtentry 112 89 0 45 2 0 2 2 0 8 0 unpcb 120 562 0 554 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 659 0 659 4 3 1 1 0 8 1 tcpcb 544 383 0 377 1 0 1 1 0 8 0 ipq 40 9 0 9 2 2 0 1 0 8 0 ipqe 40 18 0 18 2 2 0 1 0 8 0 inpcb 280 1340 0 1331 2 1 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 5 0 5 1 1 0 1 0 8 0 swfcl 56 4 0 0 1 0 1 1 0 8 0 ppxss 1128 45 0 45 8 7 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 372 0 182 13 0 13 13 0 8 0 art_table 32 373 0 182 2 0 2 2 0 8 0 art_node 16 88 0 48 1 0 1 1 0 8 0 sysvmsgpl 40 60 0 40 1 0 1 1 0 8 0 semapl 112 262 0 252 1 0 1 1 0 8 0 shmpl 112 53 0 7 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 6229 0 4809 47 1 46 47 0 8 0 ffsino 240 6229 0 4809 84 0 84 84 0 8 0 nchpl 144 10060 0 8434 61 0 61 61 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 200 5926 0 0 312 0 312 312 0 8 0 namei 1024 27732 0 27732 5 4 1 1 0 8 1 vmpool 520 7 0 7 2 1 1 1 0 8 1 scsiplug 64 4 0 4 1 1 0 1 0 8 0 scxspl 192 31032 0 31032 13 12 1 7 0 8 1 plimitpl 152 193 0 186 1 0 1 1 0 8 0 sigapl 432 3244 0 3230 2 0 2 2 0 8 0 futexpl 56 26361 0 26360 5 4 1 1 0 8 0 knotepl 112 489 0 470 1 0 1 1 0 8 0 kqueuepl 104 469 0 467 1 0 1 1 0 8 0 pipepl 112 496 0 477 2 1 1 2 0 8 0 fdescpl 424 3245 0 3230 2 0 2 2 0 8 0 filepl 120 12007 0 11911 5 1 4 5 0 8 1 lockfpl 104 682 0 682 5 4 1 1 0 8 1 lockfspl 48 243 0 243 5 4 1 1 0 8 1 sessionpl 112 21 0 11 1 0 1 1 0 8 0 pgrppl 48 33 0 23 1 0 1 1 0 8 0 ucredpl 96 2446 0 2439 1 0 1 1 0 8 0 zombiepl 144 3230 0 3230 1 0 1 1 0 8 1 processpl 864 3261 0 3230 4 0 4 4 0 8 0 procpl 632 6712 0 6672 4 0 4 4 0 8 0 sosppl 128 32 0 32 2 2 0 1 0 8 0 sockpl 384 2015 0 1996 8 5 3 4 0 8 1 mcl64k 65536 124 0 124 5 4 1 1 0 8 1 mcl16k 16384 8 0 8 2 1 1 1 0 8 1 mcl12k 12288 44 0 44 5 4 1 1 0 8 1 mcl9k 9216 34 0 34 7 6 1 1 0 8 1 mcl8k 8192 44 0 44 6 5 1 1 0 8 1 mcl4k 4096 106 0 106 7 6 1 1 0 8 1 mcl2k2 2112 20 0 20 3 3 0 1 0 8 0 mcl2k 2048 28475 0 28431 15 8 7 10 0 8 1 mtagpl 80 78 0 72 2 1 1 1 0 8 0 mbufpl 256 82531 0 82418 22 8 14 17 0 8 4 bufpl 256 19201 0 12507 419 0 419 419 0 8 0 anonpl 16 329357 0 324533 93 59 34 54 0 62 5 amapchunkpl 152 13517 0 13434 15 10 5 8 0 158 1 amappl16 192 18490 0 18233 76 61 15 37 0 8 0 amappl15 184 684 0 684 1 1 0 1 0 8 0 amappl14 176 762 0 755 1 0 1 1 0 8 0 amappl13 168 6 0 6 1 1 0 1 0 8 0 amappl12 160 30 0 28 1 0 1 1 0 8 0 amappl11 152 61 0 50 1 0 1 1 0 8 0 amappl10 144 2217 0 2212 1 0 1 1 0 8 0 amappl9 136 775 0 770 1 0 1 1 0 8 0 amappl8 128 343 0 321 1 0 1 1 0 8 0 amappl7 120 2188 0 2182 1 0 1 1 0 8 0 amappl6 112 56 0 50 1 0 1 1 0 8 0 amappl5 104 176 0 166 1 0 1 1 0 8 0 amappl4 96 2819 0 2789 2 1 1 2 0 8 0 amappl3 88 1608 0 1597 1 0 1 1 0 8 0 amappl2 80 24933 0 24857 3 1 2 3 0 8 0 amappl1 72 62105 0 61674 24 13 11 19 0 8 0 amappl 80 7052 0 7018 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 7 1 0 1 1 0 8 0 uaddrrnd 24 3252 0 3230 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3252 0 3230 1 0 1 1 0 8 0 vmmpekpl 168 17452 0 17421 2 0 2 2 0 8 0 vmmpepl 168 377378 0 375960 135 73 62 82 0 357 0 vmsppl 272 3244 0 3230 2 1 1 2 0 8 0 pdppl 4096 6510 0 6474 6 1 5 6 0 8 0 pvpl 32 860983 0 853081 231 110 121 141 0 265 50 pmappl 200 3251 0 3237 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 593 0 40 16 0 16 16 0 8 0