uvm_fault(0xffffffff824fdf28, 0xffff800000add074, 0, 1) -> e kernel: page fault trap, code=0 Stopped at rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xffffffff824fdf28, 0xffff800000add074, 0, 1) -> e rtable_satoplen(2,ffff800000adcf78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff80001697cf80, count: 0 ddb> trace rtable_satoplen(2,ffff800000adcf78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(66,fffffd8029efcd20,ffff800000adcf78,ffff800000adcf58,4) at rtable_lookup+0xe0 sys/net/rtable.c:391 rtrequest_delete(ffff80001697d020,4,ffff800000af0000,ffff80001697d0f0,66) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000adcf00,800100,ffff800000adcf58,66) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_purgeaddr(ffff800000adcf00) at in_purgeaddr+0xc6 in_remove_prefix sys/netinet/in.c:738 [inline] in_purgeaddr(ffff800000adcf00) at in_purgeaddr+0xc6 in_ifscrub sys/netinet/in.c:562 [inline] in_purgeaddr(ffff800000adcf00) at in_purgeaddr+0xc6 sys/netinet/in.c:678 in_ifinit(ffff800000af0000,ffff800000adcf00,ffff80001697d470,1) at in_ifinit+0x234 sys/netinet/in.c:664 in_ioctl_change_ifaddr(8040691a,ffff80001697d460,ffff800000af0000,1) at in_ioctl_change_ifaddr+0x5de sys/netinet/in.c:452 in_ioctl(8040691a,ffff80001697d460,ffff800000af0000,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd80363e0d88,8040691a,ffff80001697d460,ffff800015952780) at ifioctl+0xb34 sys/net/if.c:2202 sys_ioctl(ffff800015952780,ffff80001697d578,ffff80001697d5c0) at sys_ioctl+0x5b9 syscall(ffff80001697d640) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,9f39ee23010) at Xsyscall+0x128 end of kernel end trace frame: 0x9f6403b8f20, count: -12 ddb> show registers rdi 0 rsi 0xfd rbp 0xffff80001697cee0 rbx 0xffffffffffffff07 rdx 0xffff800000adcf7c rcx 0xffff800000add075 rax 0xffff800000add075 r8 0x4 r9 0x5 r10 0xe9088c8295570f84 r11 0x315e1e1e043d4ff9 r12 0 r13 0xffff800000add075 r14 0xffffffff82480ed8 inetdomain r15 0x4 rip 0xffffffff818195e0 rtable_satoplen+0x150 cs 0x8 rflags 0x10283 __ALIGN_SIZE+0xf283 rsp 0xffff80001697ce90 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb> show proc PROC (syz-executor.0) pid=488050 stat=onproc flags process=0 proc=4000000 pri=69, usrpri=69, nice=20 forw=0xffffffffffffffff, list=0xffff800015952c70,0xffffffff8255d430 process=0xffff8000148a2d98 user=0xffff800016978000, vmspace=0xfffffd803f012220 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 81071 427473 64348 0 2 0 syz-executor.0 *81071 488050 64348 0 7 0x4000000 syz-executor.0 29831 34530 64813 0 2 0x2 syz-executor.1 91918 395654 0 0 3 0x14200 acct acct 64348 83520 64813 0 3 0x82 nanosleep syz-executor.0 25430 272170 1 0 3 0x100083 ttyin getty 92214 486222 0 0 3 0x14200 bored sosplice 64813 494029 1567 0 3 0x82 thrsleep syz-fuzzer 64813 224376 1567 0 3 0x4000082 thrsleep syz-fuzzer 64813 250363 1567 0 3 0x4000082 thrsleep syz-fuzzer 64813 483395 1567 0 3 0x4000082 thrsleep syz-fuzzer 64813 263441 1567 0 3 0x4000082 kqread syz-fuzzer 64813 267634 1567 0 3 0x4000082 thrsleep syz-fuzzer 64813 431858 1567 0 3 0x4000082 thrsleep syz-fuzzer 1567 88751 96101 0 3 0x10008a pause ksh 96101 394851 15976 0 3 0x92 select sshd 15976 204143 1 0 3 0x80 select sshd 499 470760 21523 73 3 0x100090 kqread syslogd 21523 382823 1 0 3 0x100082 netio syslogd 10005 309806 1 77 3 0x100090 poll dhclient 50309 478030 1 0 3 0x80 poll dhclient 34606 169513 0 0 2 0x14200 zerothread 63394 352301 0 0 3 0x14200 aiodoned aiodoned 70041 432472 0 0 3 0x14200 syncer update 43352 27996 0 0 3 0x14200 cleaner cleaner 45506 345946 0 0 3 0x14200 reaper reaper 33563 459204 0 0 3 0x14200 pgdaemon pagedaemon 48065 191971 0 0 3 0x14200 bored crynlk 9411 168075 0 0 3 0x14200 bored crypto 8313 333993 0 0 3 0x40014200 acpi0 acpi0 99548 280390 0 0 3 0x14200 bored softnet 96054 442338 0 0 3 0x14200 bored systqmp 59333 353267 0 0 3 0x14200 bored systq 17914 117362 0 0 3 0x40014200 bored softclock 86101 250 0 0 3 0x40014200 idle0 60324 432386 0 0 3 0x14200 bored smr 1 20812 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 9545 6354K 7876K 78643K 14132 0 0 pcb 13 8K 8K 78643K 183 0 0 rtable 84 7K 8K 78643K 612 0 0 ifaddr 68 14K 14K 78643K 168 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 42 0 0 iov 0 0K 16K 78643K 162 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1226 77K 77K 78643K 2183 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 7 0 0 VM map 8 2K 2K 78643K 8 0 0 sem 12 0K 0K 78643K 231 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12646 0 0 file desc 5 13K 25K 78643K 621 0 0 sigio 0 0K 0K 78643K 9 0 0 proc 48 38K 54K 78643K 535 0 0 subproc 32 2K 2K 78643K 85 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 27 0 0 in_multi 13 0K 2K 78643K 79 0 0 ether_multi 1 0K 0K 78643K 3 0 0 mrt 0 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 60 265K 265K 78643K 60 0 0 exec 0 0K 1K 78643K 288 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 120 71K 73K 78643K 2400 0 0 UVM aobj 31 2K 2K 78643K 35 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 148 0 0 NDP 16 0K 0K 78643K 50 0 0 temp 198 3540K 3606K 78643K 14792 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 22 0 20 1 0 1 1 0 8 0 rtpcb 80 109 0 107 1 0 1 1 0 8 0 rtentry 112 118 0 89 2 0 2 2 0 8 0 unpcb 120 401 0 393 1 0 1 1 0 8 0 syncache 264 11 0 11 4 3 1 1 0 8 1 tcpqe 32 41 0 41 4 3 1 1 0 8 1 tcpcb 544 226 0 221 1 0 1 1 0 8 0 ipq 40 3 0 3 1 1 0 1 0 8 0 ipqe 40 120 0 120 1 1 0 1 0 8 0 inpcb 280 874 0 865 2 0 2 2 0 8 1 nd6 48 15 0 13 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 ppxss 1128 9 0 9 3 2 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 518 0 343 15 3 12 15 0 8 0 art_table 32 520 0 343 2 0 2 2 0 8 0 art_node 16 116 0 89 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 13 1 0 1 1 0 8 0 semapl 112 229 0 219 1 0 1 1 0 8 0 shmpl 112 33 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2350 0 954 46 0 46 46 0 8 0 ffsino 240 2350 0 954 83 0 83 83 0 8 0 nchpl 144 3502 0 1914 60 0 60 60 0 8 0 uvmvnodes 72 3191 0 0 59 0 59 59 0 8 0 vnodes 208 3191 0 0 168 0 168 168 0 8 0 namei 1024 10830 0 10830 1 0 1 1 0 8 1 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 520 6 0 0 1 0 1 1 0 8 0 scsiplug 64 5 0 5 2 1 1 1 0 8 1 scxspl 192 10381 0 10381 9 7 2 7 0 8 2 plimitpl 152 62 0 55 1 0 1 1 0 8 0 sigapl 432 784 0 771 2 0 2 2 0 8 0 futexpl 56 17500 0 17500 1 0 1 1 0 8 1 knotepl 112 210 0 191 1 0 1 1 0 8 0 kqueuepl 104 144 0 142 1 0 1 1 0 8 0 pipepl 112 490 0 471 2 0 2 2 0 8 1 fdescpl 424 785 0 771 2 0 2 2 0 8 0 filepl 120 6278 0 6182 6 2 4 5 0 8 1 lockfpl 104 228 0 227 1 0 1 1 0 8 0 lockfspl 48 86 0 85 1 0 1 1 0 8 0 sessionpl 112 21 0 11 1 0 1 1 0 8 0 pgrppl 48 23 0 13 1 0 1 1 0 8 0 ucredpl 96 647 0 640 1 0 1 1 0 8 0 zombiepl 144 771 0 771 1 0 1 1 0 8 1 processpl 864 801 0 771 4 0 4 4 0 8 0 procpl 632 1544 0 1507 4 0 4 4 0 8 0 sosppl 128 12 0 12 2 2 0 1 0 8 0 sockpl 384 1397 0 1378 6 2 4 4 0 8 2 mcl64k 65536 81 0 81 1 0 1 1 0 8 1 mcl16k 16384 8 0 8 3 2 1 1 0 8 1 mcl12k 12288 17 0 17 2 1 1 1 0 8 1 mcl9k 9216 5 0 5 3 2 1 1 0 8 1 mcl8k 8192 29 0 29 1 0 1 1 0 8 1 mcl4k 4096 85 0 85 2 1 1 1 0 8 1 mcl2k2 2112 12 0 12 4 3 1 1 0 8 1 mcl2k 2048 68878 0 68830 18 11 7 15 0 8 0 mtagpl 80 422 0 309 5 2 3 3 0 8 0 mbufpl 256 115500 0 115192 30 9 21 23 0 8 1 bufpl 256 9256 0 3141 383 0 383 383 0 8 0 anonpl 16 104911 0 86347 109 17 92 92 0 62 16 amapchunkpl 152 4375 0 4223 26 10 16 16 0 158 9 amappl16 192 4046 0 3033 66 8 58 63 0 8 7 amappl14 176 118 0 113 1 0 1 1 0 8 0 amappl13 168 278 0 276 1 0 1 1 0 8 0 amappl12 160 203 0 200 1 0 1 1 0 8 0 amappl11 152 54 0 43 1 0 1 1 0 8 0 amappl10 144 22 0 21 1 0 1 1 0 8 0 amappl9 136 638 0 630 1 0 1 1 0 8 0 amappl8 128 194 0 165 1 0 1 1 0 8 0 amappl7 120 47 0 43 1 0 1 1 0 8 0 amappl6 112 75 0 65 1 0 1 1 0 8 0 amappl5 104 371 0 360 1 0 1 1 0 8 0 amappl4 96 1182 0 1154 1 0 1 1 0 8 0 amappl3 88 287 0 282 1 0 1 1 0 8 0 amappl2 80 5295 0 5228 3 1 2 3 0 8 0 amappl1 72 23837 0 23439 27 18 9 20 0 8 0 amappl 80 1821 0 1772 2 0 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 34 0 4 1 0 1 1 0 8 0 uaddrrnd 24 791 0 771 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 791 0 771 1 0 1 1 0 8 0 vmmpekpl 168 9303 0 9273 2 0 2 2 0 8 0 vmmpepl 168 101320 0 99248 150 25 125 129 0 357 30 vmsppl 272 784 0 771 2 1 1 2 0 8 0 pdppl 4096 1588 0 1548 7 1 6 6 0 8 0 pvpl 32 349353 0 327690 333 27 306 306 0 265 131 pmappl 200 790 0 771 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 554 0 30 16 0 16 16 0 8 0