uvm_fault(0xffffffff825597b0, 0xffff800000a8d074, 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(0xffffffff825597b0, 0xffff800000a8d074, 0, 1) -> e rtable_satoplen(2,ffff800000a8cf78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff80001597b600, count: 0 ddb> trace rtable_satoplen(2,ffff800000a8cf78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(66,fffffd8036d02620,ffff800000a8cf78,ffff800000a8cf58,4) at rtable_lookup+0xe0 sys/net/rtable.c:391 rtrequest_delete(ffff80001597b6a0,4,ffff800000a75000,ffff80001597b770,66) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000a8cf00,800100,ffff800000a8cf58,66) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_purgeaddr(ffff800000a8cf00) at in_purgeaddr+0xc6 in_remove_prefix sys/netinet/in.c:738 [inline] in_purgeaddr(ffff800000a8cf00) at in_purgeaddr+0xc6 in_ifscrub sys/netinet/in.c:562 [inline] in_purgeaddr(ffff800000a8cf00) at in_purgeaddr+0xc6 sys/netinet/in.c:678 in_ifinit(ffff800000a75000,ffff800000a8cf00,ffff80001597baf0,1) at in_ifinit+0x234 sys/netinet/in.c:664 in_ioctl_change_ifaddr(8040691a,ffff80001597bae0,ffff800000a75000,1) at in_ioctl_change_ifaddr+0x5de sys/netinet/in.c:452 in_ioctl(8040691a,ffff80001597bae0,ffff800000a75000,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd80363d0d88,8040691a,ffff80001597bae0,ffff800015960290) at ifioctl+0xb34 sys/net/if.c:2202 sys_ioctl(ffff800015960290,ffff80001597bbf8,ffff80001597bc40) at sys_ioctl+0x5b9 syscall(ffff80001597bcc0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,18a358a6010) at Xsyscall+0x128 end of kernel end trace frame: 0x18c7ef56680, count: -12 ddb> show registers rdi 0 rsi 0xfd rbp 0xffff80001597b560 rbx 0xffffffffffffff07 rdx 0xffff800000a8cf7c rcx 0xffff800000a8d075 rax 0xffff800000a8d075 r8 0x4 r9 0x5 r10 0x6ff6d0c620e7934 r11 0x8245a49831c57a85 r12 0 r13 0xffff800000a8d075 r14 0xffffffff824beb60 inetdomain r15 0x4 rip 0xffffffff81800560 rtable_satoplen+0x150 cs 0x8 rflags 0x10283 __ALIGN_SIZE+0xf283 rsp 0xffff80001597b510 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb> show proc PROC (syz-executor.1) pid=438967 stat=onproc flags process=0 proc=4000000 pri=70, usrpri=70, nice=20 forw=0xffffffffffffffff, list=0xffff800015960ee8,0xffffffff825a6d38 process=0xffff8000ffff70f0 user=0xffff800015976000, vmspace=0xfffffd803f013770 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 22886 196328 49225 0 2 0 syz-executor.1 *22886 438967 49225 0 7 0x4000000 syz-executor.1 49760 233 0 0 3 0x14200 acct acct 78950 110950 0 0 3 0x14200 bored sosplice 49225 235130 70822 0 2 0x482 syz-executor.1 12856 177015 70822 0 2 0x482 syz-executor.0 70822 455697 94475 0 3 0x82 thrsleep syz-fuzzer 70822 385060 94475 0 3 0x4000082 thrsleep syz-fuzzer 70822 345242 94475 0 3 0x4000082 kqread syz-fuzzer 70822 256573 94475 0 3 0x4000082 thrsleep syz-fuzzer 70822 446828 94475 0 3 0x4000082 thrsleep syz-fuzzer 70822 261965 94475 0 3 0x4000082 thrsleep syz-fuzzer 70822 385701 94475 0 3 0x4000082 thrsleep syz-fuzzer 94475 344073 34483 0 3 0x10008a pause ksh 34483 342114 88885 0 3 0x92 select sshd 32091 435211 1 0 3 0x100083 ttyin getty 88885 327819 1 0 3 0x80 select sshd 87991 148543 29157 73 2 0x100090 syslogd 29157 461012 1 0 3 0x100082 netio syslogd 67829 376596 1 77 3 0x100090 poll dhclient 82558 371015 1 0 3 0x80 poll dhclient 63841 92244 0 0 2 0x14200 zerothread 60973 140538 0 0 3 0x14200 aiodoned aiodoned 77983 3009 0 0 3 0x14200 syncer update 84406 316190 0 0 3 0x14200 cleaner cleaner 1797 496856 0 0 3 0x14200 reaper reaper 37373 487643 0 0 3 0x14200 pgdaemon pagedaemon 8369 344053 0 0 3 0x14200 bored crynlk 88354 520344 0 0 3 0x14200 bored crypto 55834 493983 0 0 3 0x40014200 acpi0 acpi0 41441 370578 0 0 3 0x14200 bored softnet 59070 339589 0 0 3 0x14200 bored systqmp 86130 207648 0 0 3 0x14200 bored systq 28895 385895 0 0 3 0x40014200 bored softclock 11584 337855 0 0 3 0x40014200 idle0 16272 257170 0 0 3 0x14200 bored smr 1 449136 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 9515 6346K 6861K 78643K 11381 0 0 pcb 13 8K 8K 78643K 113 0 0 rtable 73 6K 7K 78643K 577 0 0 ifaddr 60 12K 13K 78643K 113 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 40 0 0 iov 0 0K 32K 78643K 113 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1221 77K 77K 78643K 1494 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 3 0 0 VM map 8 2K 2K 78643K 10 0 0 sem 12 1K 1K 78643K 124 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12645 0 0 file desc 5 13K 25K 78643K 334 0 0 sigio 0 0K 0K 78643K 4 0 0 proc 49 38K 63K 78643K 370 0 0 subproc 32 2K 2K 78643K 34 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 59 0 0 in_multi 12 0K 2K 78643K 58 0 0 ether_multi 1 0K 0K 78643K 3 0 0 mrt 0 0K 0K 78643K 7 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 215 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 114 87K 87K 78643K 1668 0 0 UVM aobj 7 2K 2K 78643K 11 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 85 0 0 NDP 14 0K 0K 78643K 33 0 0 temp 176 3533K 3608K 78643K 18293 0 0 kqueue 0 0K 0K 78643K 4 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 8 0 6 1 0 1 1 0 8 0 rtpcb 80 296 0 294 1 0 1 1 0 8 0 rtentry 112 73 0 48 2 0 2 2 0 8 0 unpcb 120 181 0 173 1 0 1 1 0 8 0 syncache 264 7 0 7 2 1 1 1 0 8 1 tcpqe 32 201 0 201 1 1 0 1 0 8 0 tcpcb 544 171 0 167 1 0 1 1 0 8 0 ipq 40 5 0 5 2 2 0 1 0 8 0 ipqe 40 59 0 59 2 2 0 1 0 8 0 inpcb 280 675 0 667 5 2 3 4 0 8 2 rttmr 72 4 0 3 2 1 1 1 0 8 0 nd6 48 7 0 7 1 0 1 1 0 8 1 ppxss 1128 6 0 6 2 1 1 1 0 8 1 art_heap8 4096 5 0 4 3 0 3 3 0 8 2 art_heap4 256 342 0 196 14 1 13 14 0 8 3 art_table 32 347 0 200 2 0 2 2 0 8 0 art_node 16 72 0 49 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 5 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 122 0 112 1 0 1 1 0 8 0 shmpl 112 9 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1935 0 535 46 0 46 46 0 8 0 ffsino 240 1935 0 535 83 0 83 83 0 8 0 nchpl 144 2628 0 1009 61 0 61 61 0 8 0 uvmvnodes 72 2169 0 0 40 0 40 40 0 8 0 vnodes 208 2169 0 0 115 0 115 115 0 8 0 namei 1024 7523 0 7523 1 0 1 1 0 8 1 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 520 8 0 2 2 1 1 1 0 8 0 scxspl 192 8170 0 8170 8 7 1 7 0 8 1 plimitpl 152 43 0 36 1 0 1 1 0 8 0 sigapl 432 505 0 492 2 0 2 2 0 8 0 futexpl 56 10613 0 10613 1 0 1 1 0 8 1 knotepl 112 70 0 51 1 0 1 1 0 8 0 kqueuepl 104 69 0 67 1 0 1 1 0 8 0 pipepl 112 340 0 321 2 1 1 2 0 8 0 fdescpl 424 506 0 492 2 0 2 2 0 8 0 filepl 120 3961 0 3865 5 0 5 5 0 8 2 lockfpl 104 144 0 143 1 0 1 1 0 8 0 lockfspl 48 48 0 47 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 406 0 397 1 0 1 1 0 8 0 zombiepl 144 492 0 491 1 0 1 1 0 8 0 processpl 864 522 0 491 4 0 4 4 0 8 0 procpl 632 959 0 921 4 0 4 4 0 8 0 sosppl 128 9 0 9 2 1 1 1 0 8 1 sockpl 384 1153 0 1135 10 5 5 7 0 8 3 mcl64k 65536 39 0 39 1 0 1 1 0 8 1 mcl16k 16384 11 0 11 1 0 1 1 0 8 1 mcl12k 12288 11 0 11 1 0 1 1 0 8 1 mcl9k 9216 8 0 8 3 2 1 1 0 8 1 mcl8k 8192 17 0 17 1 0 1 1 0 8 1 mcl4k 4096 48 0 48 2 1 1 1 0 8 1 mcl2k 2048 67022 0 66975 20 13 7 16 0 8 0 mtagpl 80 16 0 14 2 1 1 1 0 8 0 mbufpl 256 112264 0 112132 43 27 16 31 0 8 3 bufpl 256 8715 0 2609 382 0 382 382 0 8 0 anonpl 16 72090 0 52545 97 2 95 95 0 62 16 amapchunkpl 152 2558 0 2430 16 1 15 15 0 158 8 amappl16 192 2998 0 1901 66 2 64 66 0 8 8 amappl15 184 2 0 1 1 0 1 1 0 8 0 amappl14 176 30 0 27 1 0 1 1 0 8 0 amappl13 168 165 0 164 1 0 1 1 0 8 0 amappl12 160 15 0 11 1 0 1 1 0 8 0 amappl11 152 45 0 33 1 0 1 1 0 8 0 amappl10 144 145 0 142 1 0 1 1 0 8 0 amappl9 136 583 0 575 1 0 1 1 0 8 0 amappl8 128 158 0 130 1 0 1 1 0 8 0 amappl7 120 169 0 165 1 0 1 1 0 8 0 amappl6 112 71 0 59 1 0 1 1 0 8 0 amappl5 104 151 0 141 1 0 1 1 0 8 0 amappl4 96 897 0 871 1 0 1 1 0 8 0 amappl3 88 131 0 124 1 0 1 1 0 8 0 amappl2 80 3283 0 3215 3 1 2 3 0 8 0 amappl1 72 18493 0 18089 27 18 9 20 0 8 0 amappl 80 1186 0 1145 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 10 0 4 1 0 1 1 0 8 0 uaddrrnd 24 514 0 492 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 514 0 492 1 0 1 1 0 8 0 vmmpekpl 168 7533 0 7507 2 0 2 2 0 8 0 vmmpepl 168 67479 0 65300 137 26 111 131 0 357 11 vmsppl 272 505 0 492 2 1 1 2 0 8 0 pdppl 4096 1034 0 994 7 1 6 6 0 8 0 pvpl 32 232307 0 209989 285 1 284 284 0 265 102 pmappl 200 513 0 494 2 0 2 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 566 0 46 15 0 15 15 0 8 0