uvm_fault(0xfffffd806bc09110, 0x8, 0, 2) -> e kernel: page fault trap, code=0 Stopped at ml_enlist+0x5c: movq %rbx,0x8(%rax) ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd806bc09110, 0x8, 0, 2) -> e ml_enlist(ffff800020495628,ffff800000a1c700) at ml_enlist+0x5c sys/kern/uipc_mbuf.c:1582 end trace frame: 0xffff800020495670, count: 0 ddb> trace ml_enlist(ffff800020495628,ffff800000a1c700) at ml_enlist+0x5c sys/kern/uipc_mbuf.c:1582 ifq_purge(ffff800000a2aa78) at ifq_purge+0x5d sys/net/ifq.c:414 if_down(ffff800000a2a800) at if_down+0x9c if_linkstate sys/net/if.c:1677 [inline] if_down(ffff800000a2a800) at if_down+0x9c sys/net/if.c:1628 ifioctl(fffffd805d8ede18,80206910,ffff800020495780,ffff8000ffff8770) at ifioctl+0x176d sys/net/if.c:2015 sys_ioctl(ffff8000ffff8770,ffff800020495898,ffff8000204958e0) at sys_ioctl+0x498 syscall(ffff800020495960) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc1ffbb4f900, count: -7 ddb> show registers rdi 0xffffffff81da3e18 ml_enlist+0x58 rsi 0x4a rbp 0xffff800020495610 rbx 0xfffffd8059e76700 rdx 0x4b rcx 0xffff800020637000 rax 0 r8 0x101010101010101 r9 0x7 r10 0x134c98a0a3ee61ad r11 0x58f41cd072edeefc r12 0x6 r13 0 r14 0xffff800000a1c700 r15 0xffff800020495628 rip 0xffffffff81da3e1c ml_enlist+0x5c cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000204955d0 ss 0x10 ml_enlist+0x5c: movq %rbx,0x8(%rax) ddb> show proc PROC (syz-executor.0) pid=174291 stat=onproc flags process=0 proc=4000000 pri=77, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff89e8,0xffffffff825900a0 process=0xffff80001d39b0f8 user=0xffff800020490000, vmspace=0xfffffd806bc09110 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 39729 153019 84446 0 2 0 syz-executor.0 *39729 174291 84446 0 7 0x4000000 syz-executor.0 2555 482807 65987 0 2 0 syz-executor.1 2555 256944 65987 0 3 0x4000080 fsleep syz-executor.1 21675 471344 1 0 3 0x100083 ttyin getty 65987 16208 19678 0 3 0x82 nanosleep syz-executor.1 84446 192859 19678 0 3 0x82 nanosleep syz-executor.0 74650 117615 0 0 3 0x14200 acct acct 8381 389836 0 0 3 0x14200 bored sosplice 19678 387109 12160 0 3 0x82 thrsleep syz-fuzzer 19678 162171 12160 0 3 0x4000082 nanosleep syz-fuzzer 19678 3696 12160 0 3 0x4000082 thrsleep syz-fuzzer 19678 34051 12160 0 3 0x4000082 thrsleep syz-fuzzer 19678 716 12160 0 3 0x4000082 kqread syz-fuzzer 19678 248022 12160 0 3 0x4000082 thrsleep syz-fuzzer 19678 168397 12160 0 3 0x4000082 thrsleep syz-fuzzer 19678 76807 12160 0 3 0x4000082 thrsleep syz-fuzzer 12160 244640 10761 0 3 0x10008a pause ksh 10761 141328 31315 0 3 0x92 select sshd 31315 151778 1 0 3 0x80 select sshd 50281 168825 8757 73 3 0x100090 kqread syslogd 8757 6065 1 0 3 0x100082 netio syslogd 32644 105523 1 77 3 0x100090 poll dhclient 83194 145340 1 0 3 0x80 poll dhclient 89664 247472 0 0 2 0x14200 zerothread 57299 80455 0 0 3 0x14200 aiodoned aiodoned 34386 162461 0 0 3 0x14200 syncer update 25644 294449 0 0 3 0x14200 cleaner cleaner 19010 354024 0 0 3 0x14200 reaper reaper 73622 290360 0 0 3 0x14200 pgdaemon pagedaemon 41462 439936 0 0 3 0x14200 bored crynlk 48309 36057 0 0 3 0x14200 bored crypto 86503 248066 0 0 3 0x40014200 acpi0 acpi0 21035 146061 0 0 3 0x14200 bored softnet 67942 381287 0 0 3 0x14200 bored systqmp 48544 333543 0 0 3 0x14200 bored systq 51369 358643 0 0 3 0x40014200 bored softclock 35934 62923 0 0 3 0x40014200 idle0 62721 514962 0 0 3 0x14200 bored smr 1 186719 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 devbuf 9544 6383K 7031K 78643K 12629 0 pcb 13 10K 12K 78643K 208 0 rtable 129 4K 5K 78643K 798 0 ifaddr 101 18K 19K 78643K 763 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 138 0 iov 0 0K 16K 78643K 332 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 3463 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 25 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 249 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 6 17K 25K 78643K 2865 0 sigio 0 0K 0K 78643K 42 0 proc 51 46K 55K 78643K 730 0 subproc 32 2K 2K 78643K 136 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 80 0 in_multi 80 4K 4K 78643K 229 0 ether_multi 1 0K 0K 78643K 32 0 mrt 0 0K 0K 78643K 18 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 85 387K 387K 78643K 85 0 exec 0 0K 1K 78643K 419 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 146 136K 142K 78643K 7610 0 UVM aobj 87 3K 3K 78643K 92 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 199 0 NDP 17 0K 0K 78643K 67 0 temp 150 3015K 3082K 78643K 44366 0 kqueue 3 4K 18K 78643K 106 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 27 0 17 1 0 1 1 0 8 0 rtpcb 80 135 0 133 1 0 1 1 0 8 0 rtentry 112 135 0 85 2 0 2 2 0 8 0 unpcb 120 621 0 613 1 0 1 1 0 8 0 syncache 264 10 0 10 3 3 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 222 0 222 1 1 0 1 0 8 0 tcpcb 544 945 0 941 12 11 1 11 0 8 0 ipq 40 7 0 7 6 5 1 1 0 8 1 ipqe 40 191 0 191 6 5 1 1 0 8 1 inpcb 280 2955 0 2945 16 14 2 9 0 8 1 rttmr 72 7 0 7 3 3 0 1 0 8 0 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 48 17 0 13 1 0 1 1 0 8 0 pkpcb 40 8 0 8 3 2 1 1 0 8 1 ppxss 1128 24 0 24 5 4 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 581 0 333 21 5 16 16 0 8 0 art_table 32 583 0 333 3 0 3 3 0 8 0 art_node 16 134 0 89 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 245 0 235 1 0 1 1 0 8 0 shmpl 112 90 0 5 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 6729 0 5333 46 0 46 46 0 8 0 ffsino 240 6729 0 5333 83 0 83 83 0 8 0 nchpl 144 11211 0 9610 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 32394 0 32394 1 0 1 1 0 8 1 vcpupl 1984 12 0 0 2 0 2 2 0 8 0 vmpool 528 18 0 6 1 0 1 1 0 8 0 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 28663 0 28663 1 0 1 1 0 8 1 plimitpl 152 108 0 101 1 0 1 1 0 8 0 sigapl 432 3020 0 3006 2 0 2 2 0 8 0 futexpl 56 52146 0 52145 1 0 1 1 0 8 0 knotepl 112 280 0 261 1 0 1 1 0 8 0 kqueuepl 104 476 0 474 4 3 1 4 0 8 0 pipelkpl 16 394 0 384 1 0 1 1 0 8 0 pipepl 120 788 0 769 2 1 1 2 0 8 0 fdescpl 432 3021 0 3006 2 0 2 2 0 8 0 filepl 120 18611 0 18514 12 8 4 11 0 8 1 lockfpl 104 1092 0 1091 1 0 1 1 0 8 0 lockfspl 48 346 0 345 1 0 1 1 0 8 0 sessionpl 112 25 0 15 1 0 1 1 0 8 0 pgrppl 48 45 0 35 1 0 1 1 0 8 0 ucredpl 96 2331 0 2324 1 0 1 1 0 8 0 zombiepl 144 3006 0 3006 1 0 1 1 0 8 1 processpl 864 3037 0 3006 4 0 4 4 0 8 0 procpl 632 6579 0 6539 8 4 4 5 0 8 0 sosppl 128 18 0 18 4 3 1 1 0 8 1 sockpl 400 3758 0 3740 23 20 3 14 0 8 1 mcl64k 65536 618 0 618 72 39 33 33 0 8 33 mcl16k 16384 43 0 43 8 8 0 1 0 8 0 mcl12k 12288 125 0 125 5 4 1 1 0 8 1 mcl9k 9216 27 0 27 9 8 1 1 0 8 1 mcl8k 8192 445 0 445 2 1 1 1 0 8 1 mcl4k 4096 107 0 107 9 8 1 1 0 8 1 mcl2k2 2112 13 0 13 6 5 1 1 0 8 1 mcl2k 2048 65258 0 65197 22 13 9 17 0 8 0 mtagpl 80 52 0 32 3 2 1 1 0 8 0 mbufpl 256 122563 0 122407 87 68 19 35 0 8 8 bufpl 280 11192 0 5008 442 0 442 442 0 8 0 anonpl 16 254549 0 239271 108 30 78 79 0 107 10 amapchunkpl 152 12951 0 12807 33 25 8 20 0 158 1 amappl16 192 13970 0 13074 88 35 53 57 0 8 8 amappl15 184 655 0 651 1 0 1 1 0 8 0 amappl14 176 1140 0 1137 1 0 1 1 0 8 0 amappl13 168 114 0 114 1 1 0 1 0 8 0 amappl12 160 17 0 16 1 0 1 1 0 8 0 amappl11 152 972 0 959 1 0 1 1 0 8 0 amappl10 144 189 0 186 1 0 1 1 0 8 0 amappl9 136 823 0 820 1 0 1 1 0 8 0 amappl8 128 380 0 348 2 0 2 2 0 8 0 amappl7 120 301 0 288 1 0 1 1 0 8 0 amappl6 112 964 0 953 1 0 1 1 0 8 0 amappl5 104 235 0 225 1 0 1 1 0 8 0 amappl4 96 2220 0 2188 1 0 1 1 0 8 0 amappl3 88 2389 0 2377 1 0 1 1 0 8 0 amappl2 80 23445 0 23368 3 1 2 3 0 8 0 amappl1 72 57351 0 56918 25 16 9 20 0 8 0 amappl 80 6900 0 6847 3 1 2 2 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 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 64 91 0 5 2 0 2 2 0 8 0 uaddrrnd 24 3039 0 3012 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3039 0 3012 1 0 1 1 0 8 0 vmmpekpl 168 18352 0 18322 2 0 2 2 0 8 0 vmmpepl 168 350468 0 348351 161 62 99 117 0 357 6 vmsppl 272 3038 0 3012 3 1 2 2 0 8 0 pdppl 4096 6084 0 6036 9 2 7 7 0 8 0 pvpl 32 702929 0 684504 262 78 184 187 0 265 25 pmappl 200 3038 0 3012 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 359 0 178 6 0 6 6 0 8 0