uvm_fault(0xfffffd803f014110, 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(0xfffffd803f014110, 0x24, 0, 1) -> e frag6_input(ffff800017772808,ffff800017772814,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 end trace frame: 0xffff800017772690, count: 0 ddb> trace frag6_input(ffff800017772808,ffff800017772814,2c,18) at frag6_input+0x762 sys/netinet6/frag6.c:321 ip_deliver(ffff800017772808,ffff800017772814,2c,18) at ip_deliver+0x2e3 sys/netinet/ip_input.c:665 ip6_input_if(ffff800017772808,ffff800017772814,29,0,ffff80000069c000) at ip6_input_if+0x153a ip6_ours sys/netinet6/ip6_input.c:518 [inline] ip6_input_if(ffff800017772808,ffff800017772814,29,0,ffff80000069c000) at ip6_input_if+0x153a sys/netinet6/ip6_input.c:340 ipv6_input(ffff80000069c000,fffffd8031354400) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000069c000,fffffd8031354400,18) at if_input_local+0x121 sys/net/if.c:783 ip6_output(fffffd8031354200,ffff800000023000,fffffd803da164d0,0,0,fffffd803da16460) at ip6_output+0xd35 rip6_output(fffffd8031354200,fffffd802f0b8910,ffff800017772b78,0) at rip6_output+0x4d7 sys/netinet6/raw_ip6.c:481 rip6_usrreq(fffffd802f0b8910,9,fffffd8031354200,0,0,ffff8000ffff3160) at rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 sosend(fffffd802f0b8910,0,ffff800017772da8,0,0,0) at sosend+0x660 sys/kern/uipc_socket.c:524 dofilewritev(ffff8000ffff3160,3,ffff800017772da8,0,ffff800017772eb0) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff8000ffff3160,ffff800017772e48,ffff800017772eb0) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff800017772f10) at syscall+0x508 Xsyscall(6,0,c,0,3,61c07df60e0) at Xsyscall+0x128 end of kernel end trace frame: 0x61e26034fe0, count: -13 ddb> show registers rdi 0 rsi 0 rbp 0xffff800017772610 rbx 0x600 rdx 0 rcx 0 rax 0 r8 0x30 r9 0 r10 0x3f641912225b47e8 r11 0xa6a1a06faface20 r12 0 r13 0xfffffd803ad86f30 r14 0xfffffd803ad86f40 r15 0xfffffd80047d6854 rip 0xffffffff818f50a2 frag6_input+0x762 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff800017772550 ss 0x10 frag6_input+0x762: movl 0x24(%rax),%r14d ddb> show proc PROC (syz-executor.1) pid=63522 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff2ee8,0xffffffff8257f9f0 process=0xffff8000148a2a38 user=0xffff80001776d000, vmspace=0xfffffd803f014110 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 77439 234265 8247 0 2 0 syz-executor.1 77439 154092 8247 0 3 0x4000080 poll syz-executor.1 *77439 63522 8247 0 7 0x4000000 syz-executor.1 69939 100838 1 0 3 0x100083 ttyin getty 69398 110294 4567 0 3 0x82 nanosleep syz-executor.0 8247 18965 4567 0 3 0x82 nanosleep syz-executor.1 21313 495197 0 0 3 0x14200 bored sosplice 63026 223135 0 0 3 0x14200 acct acct 4567 523364 80697 0 3 0x82 thrsleep syz-fuzzer 4567 330839 80697 0 3 0x4000082 thrsleep syz-fuzzer 4567 246869 80697 0 3 0x4000082 thrsleep syz-fuzzer 4567 340493 80697 0 3 0x4000082 thrsleep syz-fuzzer 4567 269700 80697 0 3 0x4000082 thrsleep syz-fuzzer 4567 518122 80697 0 3 0x4000082 kqread syz-fuzzer 4567 513221 80697 0 3 0x4000082 thrsleep syz-fuzzer 80697 233376 22023 0 3 0x10008a pause ksh 22023 461786 36289 0 3 0x92 select sshd 36289 452516 1 0 3 0x80 select sshd 69324 300569 31391 73 3 0x100090 kqread syslogd 31391 78211 1 0 3 0x100082 netio syslogd 38047 480852 1 77 3 0x100090 poll dhclient 41505 105526 1 0 3 0x80 poll dhclient 72566 405481 0 0 2 0x14200 zerothread 24565 120199 0 0 3 0x14200 aiodoned aiodoned 60368 241302 0 0 3 0x14200 syncer update 96921 123957 0 0 3 0x14200 cleaner cleaner 69730 142977 0 0 3 0x14200 reaper reaper 7555 9330 0 0 3 0x14200 pgdaemon pagedaemon 62772 243071 0 0 3 0x14200 bored crynlk 72280 483681 0 0 3 0x14200 bored crypto 6212 447565 0 0 3 0x40014200 acpi0 acpi0 334 166906 0 0 3 0x14200 bored softnet 50376 519027 0 0 3 0x14200 bored systqmp 33569 461298 0 0 3 0x14200 bored systq 10825 513806 0 0 3 0x40014200 bored softclock 64468 400720 0 0 3 0x40014200 idle0 64122 374042 0 0 3 0x14200 bored smr 1 515948 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 6540K 6980K 78643K 13039 0 0 pcb 14 8K 8K 78643K 113 0 0 rtable 111 4K 4K 78643K 514 0 0 ifaddr 56 13K 13K 78643K 167 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 54 0 0 iov 0 0K 16K 78643K 66 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1215 76K 77K 78643K 2181 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 9 0 0 VM map 2 0K 0K 78643K 4 0 0 sem 12 1K 1K 78643K 74 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 978 0 0 sigio 0 0K 0K 78643K 4 0 0 proc 41 30K 54K 78643K 562 0 0 subproc 32 2K 2K 78643K 87 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 97 0 0 in_multi 33 2K 2K 78643K 102 0 0 ether_multi 1 0K 0K 78643K 7 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 66 291K 291K 78643K 66 0 0 exec 0 0K 1K 78643K 305 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 94 21K 30K 78643K 3138 0 0 UVM aobj 33 2K 2K 78643K 38 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 97 0 0 NDP 11 0K 0K 78643K 48 0 0 temp 160 3534K 3604K 78643K 19935 0 0 kqueue 0 0K 0K 78643K 6 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 12 0 6 1 0 1 1 0 8 0 rtpcb 80 63 0 61 1 0 1 1 0 8 0 rtentry 112 78 0 34 3 1 2 2 0 8 0 unpcb 120 332 0 323 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 3516 0 3516 1 1 0 1 0 8 0 tcpcb 544 180 0 175 1 0 1 1 0 8 0 ipq 40 2 0 2 1 0 1 1 0 8 1 ipqe 40 4 0 4 1 0 1 1 0 8 1 inpcb 280 522 0 513 1 0 1 1 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 15 0 9 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 3 0 1 0 8 0 ppxss 1128 20 0 20 2 2 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 328 0 136 14 2 12 12 0 8 0 art_table 32 329 0 136 2 0 2 2 0 8 0 art_node 16 77 0 37 1 0 1 1 0 8 0 sysvmsgpl 40 30 0 9 1 0 1 1 0 8 0 semapl 112 64 0 54 1 0 1 1 0 8 0 shmpl 112 36 0 5 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2920 0 1506 46 0 46 46 0 8 0 ffsino 240 2920 0 1506 84 0 84 84 0 8 0 nchpl 144 4493 0 2860 61 0 61 61 0 8 0 uvmvnodes 72 3627 0 0 66 0 66 66 0 8 0 vnodes 200 3627 0 0 191 0 191 191 0 8 0 namei 1024 13568 0 13568 2 1 1 1 0 8 1 vmpool 520 2 0 2 1 1 0 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 12203 0 12203 15 14 1 7 0 8 1 plimitpl 152 104 0 97 1 0 1 1 0 8 0 sigapl 432 1141 0 1128 2 0 2 2 0 8 0 futexpl 56 15924 0 15924 1 0 1 1 0 8 1 knotepl 112 283 0 264 1 0 1 1 0 8 0 kqueuepl 104 190 0 188 1 0 1 1 0 8 0 pipepl 112 640 0 621 1 0 1 1 0 8 0 fdescpl 424 1142 0 1128 2 0 2 2 0 8 0 filepl 120 6791 0 6695 4 0 4 4 0 8 1 lockfpl 104 342 0 342 2 1 1 1 0 8 1 lockfspl 48 123 0 123 2 1 1 1 0 8 1 sessionpl 112 21 0 11 1 0 1 1 0 8 0 pgrppl 48 27 0 17 1 0 1 1 0 8 0 ucredpl 96 1276 0 1269 1 0 1 1 0 8 0 zombiepl 144 1128 0 1127 2 1 1 1 0 8 0 processpl 864 1158 0 1127 4 0 4 4 0 8 0 procpl 632 2300 0 2261 4 0 4 4 0 8 0 sosppl 128 11 0 11 4 3 1 1 0 8 1 sockpl 384 934 0 914 3 0 3 3 0 8 0 mcl64k 65536 25 0 25 3 2 1 1 0 8 1 mcl16k 16384 6 0 6 3 3 0 1 0 8 0 mcl12k 12288 17 0 17 3 2 1 1 0 8 1 mcl9k 9216 18 0 18 3 2 1 1 0 8 1 mcl8k 8192 19 0 19 2 1 1 1 0 8 1 mcl4k 4096 66 0 66 2 1 1 1 0 8 1 mcl2k2 2112 3 0 3 2 2 0 1 0 8 0 mcl2k 2048 58935 0 58878 22 14 8 18 0 8 0 mtagpl 80 19 0 7 3 2 1 1 0 8 0 mbufpl 256 99424 0 99310 16 6 10 11 0 8 1 bufpl 256 7720 0 3117 288 0 288 288 0 8 0 anonpl 16 102291 0 89788 65 7 58 58 0 62 7 amapchunkpl 152 4848 0 4745 14 5 9 9 0 158 4 amappl16 192 4790 0 4093 48 12 36 47 0 8 0 amappl15 184 185 0 185 1 1 0 1 0 8 0 amappl14 176 252 0 248 1 0 1 1 0 8 0 amappl13 168 7 0 7 2 2 0 1 0 8 0 amappl12 160 21 0 18 1 0 1 1 0 8 0 amappl11 152 336 0 325 1 0 1 1 0 8 0 amappl10 144 514 0 510 1 0 1 1 0 8 0 amappl9 136 603 0 600 1 0 1 1 0 8 0 amappl8 128 159 0 139 1 0 1 1 0 8 0 amappl7 120 488 0 481 1 0 1 1 0 8 0 amappl6 112 322 0 313 1 0 1 1 0 8 0 amappl5 104 151 0 141 1 0 1 1 0 8 0 amappl4 96 1375 0 1349 1 0 1 1 0 8 0 amappl3 88 219 0 207 1 0 1 1 0 8 0 amappl2 80 8339 0 8272 3 1 2 3 0 8 0 amappl1 72 29271 0 28864 26 17 9 19 0 8 0 amappl 80 2588 0 2553 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 37 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1144 0 1128 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1144 0 1128 1 0 1 1 0 8 0 vmmpekpl 168 11211 0 11184 2 0 2 2 0 8 0 vmmpepl 168 138597 0 136854 140 56 84 106 0 357 8 vmsppl 272 1141 0 1128 3 2 1 2 0 8 0 pdppl 4096 2294 0 2260 6 1 5 6 0 8 0 pvpl 32 306144 0 290627 166 21 145 145 0 265 18 pmappl 200 1143 0 1130 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 452 0 35 13 0 13 13 0 8 0