uvm_fault(0xfffffd803f013318, 0x18, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ml_purge+0x21: movq 0(%r14),%r12 ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd803f013318, 0x18, 0, 1) -> e ml_purge(18) at ml_purge+0x21 sys/kern/uipc_mbuf.c:1615 end trace frame: 0xffff8000159c7a40, count: 0 ddb> trace ml_purge(18) at ml_purge+0x21 sys/kern/uipc_mbuf.c:1615 arp_rtrequest() at arp_rtrequest+0x244 arpinvalidate sys/netinet/if_ether.c:698 [inline] arp_rtrequest() at arp_rtrequest+0x244 sys/netinet/if_ether.c:210 rtm_output(ffff8000006a1200,ffff8000159c7b98,ffff8000159c7af0,40,0) at rtm_output+0x3c2 sys/net/rtsock.c:934 route_output(fffffd8032a04700,fffffd803879c000,0,0) at route_output+0x7d7 sys/net/rtsock.c:814 route_usrreq(fffffd803879c000,9,fffffd8032a04700,0,0,ffff800015a24e28) at route_usrreq+0x363 sys/net/rtsock.c:271 sosend(fffffd803879c000,0,ffff8000159c7d90,0,0,80) at sosend+0x660 sys/kern/uipc_socket.c:513 sendit(ffff800015a24e28,3,ffff8000159c7e70,0,ffff8000159c7f80) at sendit+0x53c sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800015a24e28,ffff8000159c7f18,ffff8000159c7f80) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 syscall(ffff8000159c7ff0) at syscall+0x511 Xsyscall(6,0,ffffffffffffffd8,0,6,be4d11e5010) at Xsyscall+0x128 end of kernel end trace frame: 0xbe7c06a5210, count: -10 ddb> show registers rdi 0xffffffff8177dc41 ml_purge+0x21 rsi 0x137 rbp 0xffff8000159c79b0 rbx 0 rdx 0x138 rcx 0xffff8000149bb000 rax 0xffff8000149bb000 r8 0x40 r9 0x5 r10 0xffff800000a27cc0 r11 0x80088a8a85f968fc r12 0xffff8000001722a8 r13 0x11 r14 0x18 r15 0xffff80000005bdb0 rip 0xffffffff8177dc41 ml_purge+0x21 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000159c7980 ss 0x10 ml_purge+0x21: movq 0(%r14),%r12 ddb> show proc PROC (syz-executor.0) pid=438227 stat=onproc flags process=0 proc=4000000 pri=79, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800015a24bd0,0xffffffff822cbc98 process=0xffff800014953710 user=0xffff8000159c3000, vmspace=0xfffffd803f013318 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 32176 6638 71012 0 2 0 syz-executor.0 *32176 438227 71012 0 7 0x4000000 syz-executor.0 34842 433130 54922 0 2 0x2 syz-executor.1 71012 49799 54922 0 2 0x2 syz-executor.0 74068 22423 1 0 3 0x100083 ttyin getty 15750 380781 0 0 3 0x14200 bored sosplice 54922 477161 12868 0 3 0x82 thrsleep syz-fuzzer 54922 192096 12868 0 3 0x4000082 nanosleep syz-fuzzer 54922 517201 12868 0 3 0x4000082 thrsleep syz-fuzzer 54922 229789 12868 0 3 0x4000082 thrsleep syz-fuzzer 54922 199990 12868 0 3 0x4000082 thrsleep syz-fuzzer 54922 274440 12868 0 3 0x4000082 kqread syz-fuzzer 54922 318515 12868 0 3 0x4000082 thrsleep syz-fuzzer 54922 143618 12868 0 3 0x4000082 thrsleep syz-fuzzer 12868 22731 95793 0 3 0x10008a pause ksh 95793 410124 10732 0 3 0x92 select sshd 10732 507026 1 0 3 0x80 select sshd 97492 477385 25702 73 2 0x100090 syslogd 25702 33877 1 0 3 0x100082 netio syslogd 67006 382742 1 77 3 0x100090 poll dhclient 6979 120574 1 0 3 0x80 poll dhclient 133 208532 0 0 2 0x14200 zerothread 79151 37898 0 0 3 0x14200 aiodoned aiodoned 26709 351750 0 0 3 0x14200 syncer update 17779 427812 0 0 3 0x14200 cleaner cleaner 1833 149212 0 0 3 0x14200 reaper reaper 18278 253735 0 0 3 0x14200 pgdaemon pagedaemon 13225 470943 0 0 3 0x14200 bored crynlk 52329 189225 0 0 3 0x14200 bored crypto 81768 240885 0 0 3 0x40014200 acpi0 acpi0 66136 392993 0 0 3 0x14200 bored softnet 90320 48622 0 0 3 0x14200 bored systqmp 73350 241976 0 0 3 0x14200 bored systq 4107 229339 0 0 3 0x40014200 bored softclock 23485 294786 0 0 3 0x40014200 idle0 4930 16271 0 0 3 0x14200 bored smr 1 427417 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 9551 6370K 7574K 78643K 28988 0 0 pcb 24 9K 11K 78643K 4424 0 0 rtable 131 5K 5K 78643K 2145 0 0 ifaddr 69 18K 18K 78643K 796 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 357 0 0 iov 0 0K 32K 78643K 1198 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1198 75K 76K 78643K 9173 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 105 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 1K 1K 78643K 670 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12537 0 0 file desc 5 13K 25K 78643K 9855 0 0 sigio 1 0K 0K 78643K 146 0 0 proc 42 30K 55K 78643K 1451 0 0 subproc 32 2K 2K 78643K 131 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 1004 0 0 in_multi 33 2K 2K 78643K 414 0 0 ether_multi 1 0K 0K 78643K 45 0 0 mrt 0 0K 0K 78643K 9 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 144 636K 636K 78643K 144 0 0 exec 0 0K 1K 78643K 906 0 0 pfkey data 0 0K 0K 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 86 20K 38K 78643K 23984 0 0 UVM aobj 130 7K 7K 78643K 141 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 329 0 0 NDP 15 0K 0K 78643K 219 0 0 temp 194 2715K 3355K 78643K 32133 0 0 kqueue 0 0K 0K 78643K 90 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 16 0 10 1 0 1 1 0 8 0 inpcbpl 280 3868 0 3861 2 1 1 2 0 8 0 plimitpl 152 234 0 227 1 0 1 1 0 8 0 rtentry 112 142 0 94 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 7 0 7 1 1 0 1 0 8 0 tcpcb 544 1490 0 1486 1 0 1 1 0 8 0 nd6 48 21 0 15 1 0 1 1 0 8 0 swfcl 56 1 0 0 1 0 1 1 0 8 0 ppxss 1128 156 0 156 32 31 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 428 0 231 14 1 13 13 0 8 0 art_table 32 429 0 231 2 0 2 2 0 8 0 art_node 16 103 0 62 1 0 1 1 0 8 0 sysvmsgpl 40 24 0 10 1 0 1 1 0 8 0 semapl 112 668 0 658 1 0 1 1 0 8 0 shmpl 112 139 0 11 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 18072 0 16554 50 0 50 50 0 8 0 ffsino 240 18072 0 16554 90 0 90 90 0 8 0 nchpl 144 31809 0 30197 61 0 61 61 0 8 0 uvmvnodes 72 6800 0 0 124 0 124 124 0 8 0 vnodes 200 6800 0 0 358 0 358 358 0 8 0 namei 1024 102613 0 102613 4 3 1 1 0 8 1 scsiplug 64 12 0 12 9 9 0 1 0 8 0 scxspl 192 109862 0 109862 39 36 3 6 0 8 3 sigapl 432 10012 0 9999 2 0 2 2 0 8 0 futexpl 56 151679 0 151679 5 4 1 1 0 8 1 knotepl 112 2092 0 2073 1 0 1 1 0 8 0 kqueuepl 104 3063 0 3061 1 0 1 1 0 8 0 pipepl 112 5826 0 5807 14 13 1 2 0 8 0 fdescpl 424 10013 0 9999 2 0 2 2 0 8 0 filepl 120 60624 0 60529 11 7 4 5 0 8 1 lockfpl 104 3507 0 3507 4 3 1 1 0 8 1 lockfspl 48 1174 0 1174 4 3 1 1 0 8 1 sessionpl 112 23 0 13 1 0 1 1 0 8 0 pgrppl 48 148 0 138 1 0 1 1 0 8 0 ucredpl 96 14573 0 14566 1 0 1 1 0 8 0 zombiepl 144 9999 0 9999 2 1 1 1 0 8 1 processpl 840 10028 0 9999 4 0 4 4 0 8 0 procpl 600 22673 0 22636 4 0 4 4 0 8 0 sosppl 128 113 0 113 28 28 0 1 0 8 0 sockpl 384 7780 0 7762 10 7 3 4 0 8 1 mcl64k 65536 989 0 989 120 119 1 32 0 8 1 mcl16k 16384 41 0 41 29 28 1 1 0 8 1 mcl12k 12288 151 0 151 27 27 0 1 0 8 0 mcl9k 9216 132 0 132 32 31 1 1 0 8 1 mcl8k 8192 129 0 129 33 32 1 1 0 8 1 mcl4k 4096 368 0 368 14 13 1 1 0 8 1 mcl2k2 2112 53 0 53 26 25 1 1 0 8 1 mcl2k 2048 68996 0 68943 18 10 8 12 0 8 0 mtagpl 80 10 0 10 4 3 1 1 0 8 1 mbufpl 256 157600 0 157400 65 50 15 29 0 8 0 bufpl 256 31282 0 24421 430 0 430 430 0 8 0 anonpl 16 804752 0 794746 286 243 43 59 0 62 0 amapchunkpl 152 40944 0 40844 91 86 5 18 0 158 0 amappl16 192 50368 0 49825 266 237 29 40 0 8 1 amappl15 184 2524 0 2523 1 0 1 1 0 8 0 amappl14 176 379 0 377 2 1 1 1 0 8 0 amappl13 168 723 0 723 2 2 0 1 0 8 0 amappl12 160 2842 0 2838 1 0 1 1 0 8 0 amappl11 152 1779 0 1762 1 0 1 1 0 8 0 amappl10 144 1773 0 1770 2 1 1 1 0 8 0 amappl9 136 609 0 605 1 0 1 1 0 8 0 amappl8 128 183 0 166 1 0 1 1 0 8 0 amappl7 120 1742 0 1737 1 0 1 1 0 8 0 amappl6 112 1753 0 1745 1 0 1 1 0 8 0 amappl5 104 3079 0 3069 1 0 1 1 0 8 0 amappl4 96 9494 0 9472 1 0 1 1 0 8 0 amappl3 88 1499 0 1488 1 0 1 1 0 8 0 amappl2 80 82819 0 82752 4 2 2 3 0 8 0 amappl1 72 181004 0 180604 27 18 9 19 0 8 0 amappl 80 23048 0 23014 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 64 140 0 11 3 0 3 3 0 8 0 uaddrrnd 24 10013 0 9999 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 10013 0 9999 1 0 1 1 0 8 0 vmmpekpl 168 64628 0 64602 2 0 2 2 0 8 0 vmmpepl 168 994410 0 992908 321 250 71 98 0 357 1 vmsppl 264 10012 0 9999 4 3 1 2 0 8 0 pdppl 4096 20032 0 19998 8 3 5 6 0 8 0 pvpl 32 2547705 0 2534540 696 583 113 252 0 265 4 pmappl 200 10012 0 9999 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 832 0 261 18 0 18 18 0 8 0