uvm_fault(0xffffffff82535d88, 0xffff800000aa6074, 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(0xffffffff82535d88, 0xffff800000aa6074, 0, 1) -> e rtable_satoplen(2,ffff800000aa5f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff80001493a860, count: 0 ddb> trace rtable_satoplen(2,ffff800000aa5f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(0,fffffd803f02bb20,ffff800000aa5f78,ffff800000aa5f58,4) at rtable_lookup+0xe0 sys/net/rtable.c:391 rtrequest_delete(ffff80001493a900,4,ffff800000afc800,ffff80001493a9d0,0) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000aa5f00,800100,ffff800000aa5f58,0) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_purgeaddr(ffff800000aa5f00) at in_purgeaddr+0xc6 in_remove_prefix sys/netinet/in.c:738 [inline] in_purgeaddr(ffff800000aa5f00) at in_purgeaddr+0xc6 in_ifscrub sys/netinet/in.c:562 [inline] in_purgeaddr(ffff800000aa5f00) at in_purgeaddr+0xc6 sys/netinet/in.c:678 in_ifinit(ffff800000afc800,ffff800000aa5f00,ffff80001493ad50,1) at in_ifinit+0x234 sys/netinet/in.c:664 in_ioctl_change_ifaddr(8040691a,ffff80001493ad40,ffff800000afc800,1) at in_ioctl_change_ifaddr+0x5de sys/netinet/in.c:452 in_ioctl(8040691a,ffff80001493ad40,ffff800000afc800,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd80363cfd88,8040691a,ffff80001493ad40,ffff8000149153d8) at ifioctl+0xb34 sys/net/if.c:2202 sys_ioctl(ffff8000149153d8,ffff80001493ae58,ffff80001493aea0) at sys_ioctl+0x5b9 syscall(ffff80001493af20) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,81522c31010) at Xsyscall+0x128 end of kernel end trace frame: 0x817e6546f50, count: -12 ddb> show registers rdi 0 rsi 0xfd rbp 0xffff80001493a7c0 rbx 0xffffffffffffff07 rdx 0xffff800000aa5f7c rcx 0xffff800000aa6075 rax 0xffff800000aa6075 r8 0x4 r9 0x5 r10 0xfe43fb7db93aa68b r11 0xf864f0aa196a5415 r12 0 r13 0xffff800000aa6075 r14 0xffffffff8247ee88 inetdomain r15 0x4 rip 0xffffffff817890f0 rtable_satoplen+0x150 cs 0x8 rflags 0x10283 __ALIGN_SIZE+0xf283 rsp 0xffff80001493a770 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb> show proc PROC (syz-executor.1) pid=93716 stat=onproc flags process=0 proc=4000000 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800014914ee8,0xffffffff8259e288 process=0xffff8000ffff6370 user=0xffff800014935000, vmspace=0xfffffd803f012ee0 estcpu=3, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 71973 56475 25429 0 2 0 syz-executor.1 *71973 93716 25429 0 7 0x4000000 syz-executor.1 25312 428959 0 0 3 0x14200 bored sosplice 53845 182711 67011 0 2 0x2 syz-executor.0 25429 505014 67011 0 2 0x482 syz-executor.1 67011 442040 47065 0 3 0x82 thrsleep syz-fuzzer 67011 289726 47065 0 3 0x4000082 nanosleep syz-fuzzer 67011 106626 47065 0 3 0x4000082 thrsleep syz-fuzzer 67011 262612 47065 0 3 0x4000082 thrsleep syz-fuzzer 67011 371142 47065 0 3 0x4000082 thrsleep syz-fuzzer 67011 291100 47065 0 3 0x4000082 kqread syz-fuzzer 67011 107302 47065 0 3 0x4000082 thrsleep syz-fuzzer 47065 42830 72964 0 3 0x10008a pause ksh 72964 115456 15984 0 3 0x92 select sshd 73946 518008 1 0 3 0x100083 ttyin getty 15984 172724 1 0 3 0x80 select sshd 49262 146473 59421 73 3 0x100090 kqread syslogd 59421 214422 1 0 3 0x100082 netio syslogd 25780 511607 1 77 3 0x100090 poll dhclient 68926 144343 1 0 3 0x80 poll dhclient 30074 468009 0 0 2 0x14200 zerothread 99469 41686 0 0 3 0x14200 aiodoned aiodoned 35803 364241 0 0 3 0x14200 syncer update 22973 236779 0 0 3 0x14200 cleaner cleaner 70153 42150 0 0 3 0x14200 reaper reaper 10141 305688 0 0 3 0x14200 pgdaemon pagedaemon 24658 342082 0 0 3 0x14200 bored crynlk 13983 330918 0 0 3 0x14200 bored crypto 31418 163031 0 0 3 0x40014200 acpi0 acpi0 90716 306301 0 0 3 0x14200 bored softnet 12271 120116 0 0 3 0x14200 bored systqmp 88917 30025 0 0 3 0x14200 bored systq 28788 477791 0 0 3 0x40014200 bored softclock 89876 145745 0 0 3 0x40014200 idle0 87733 296755 0 0 3 0x14200 bored smr 1 257859 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 9496 6338K 7167K 78643K 10970 0 0 pcb 15 8K 8K 78643K 83 0 0 rtable 78 5K 5K 78643K 291 0 0 ifaddr 47 11K 11K 78643K 80 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 17 0 0 iov 0 0K 12K 78643K 22 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1218 77K 77K 78643K 1353 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 6 0 0 VM map 2 0K 0K 78643K 4 0 0 sem 12 0K 1K 78643K 21 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12646 0 0 file desc 5 13K 25K 78643K 154 0 0 proc 48 38K 62K 78643K 368 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 1 0 0 in_multi 12 0K 2K 78643K 36 0 0 ether_multi 1 0K 0K 78643K 2 0 0 mrt 0 0K 0K 78643K 4 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 54 238K 238K 78643K 54 0 0 exec 0 0K 1K 78643K 197 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 95 21K 22K 78643K 1229 0 0 UVM aobj 12 2K 2K 78643K 14 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 37 0 0 NDP 10 0K 0K 78643K 21 0 0 temp 130 3528K 3593K 78643K 3654 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 6 0 4 1 0 1 1 0 8 0 rtpcb 80 33 0 31 1 0 1 1 0 8 0 rtentry 112 51 0 25 2 0 2 2 0 8 0 unpcb 120 116 0 108 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 222 0 222 1 1 0 1 0 8 0 tcpcb 544 50 0 46 1 0 1 1 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 4 0 4 1 1 0 1 0 8 0 inpcb 280 178 0 167 1 0 1 1 0 8 0 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 4 0 4 1 1 0 1 0 8 0 ppxss 1128 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 222 0 95 14 4 10 14 0 8 0 art_table 32 223 0 95 2 0 2 2 0 8 0 art_node 16 50 0 26 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 5 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 19 0 9 1 0 1 1 0 8 0 shmpl 112 12 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1643 0 247 46 0 46 46 0 8 0 ffsino 240 1643 0 247 83 0 83 83 0 8 0 nchpl 144 2075 0 473 60 0 60 60 0 8 0 uvmvnodes 72 1766 0 0 33 0 33 33 0 8 0 vnodes 208 1766 0 0 93 0 93 93 0 8 0 namei 1024 5663 0 5663 1 0 1 1 0 8 1 vmpool 520 2 0 2 1 1 0 1 0 8 0 scxspl 192 5700 0 5700 8 7 1 7 0 8 1 plimitpl 152 22 0 15 1 0 1 1 0 8 0 sigapl 432 325 0 312 2 0 2 2 0 8 0 futexpl 56 3691 0 3691 1 0 1 1 0 8 1 knotepl 112 73 0 54 1 0 1 1 0 8 0 kqueuepl 104 38 0 36 1 0 1 1 0 8 0 pipepl 112 266 0 247 2 1 1 2 0 8 0 fdescpl 424 326 0 312 2 0 2 2 0 8 0 filepl 120 2322 0 2223 4 0 4 4 0 8 1 lockfpl 104 67 0 66 1 0 1 1 0 8 0 lockfspl 48 22 0 21 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 23 0 13 1 0 1 1 0 8 0 ucredpl 96 445 0 438 1 0 1 1 0 8 0 zombiepl 144 312 0 312 1 0 1 1 0 8 1 processpl 864 341 0 312 4 0 4 4 0 8 0 procpl 632 549 0 513 4 0 4 4 0 8 0 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 384 329 0 308 4 1 3 4 0 8 0 mcl64k 65536 2 0 2 1 1 0 1 0 8 0 mcl16k 16384 2 0 2 2 2 0 1 0 8 0 mcl12k 12288 3 0 3 2 1 1 1 0 8 1 mcl9k 9216 4 0 4 2 2 0 1 0 8 0 mcl8k 8192 7 0 7 1 1 0 1 0 8 0 mcl4k 4096 19 0 19 3 2 1 1 0 8 1 mcl2k 2048 66314 0 66266 23 16 7 19 0 8 0 mtagpl 80 7 0 7 2 2 0 1 0 8 0 mbufpl 256 106190 0 106130 13 7 6 12 0 8 0 bufpl 256 7438 0 1635 363 0 363 363 0 8 0 anonpl 16 60743 0 42345 98 7 91 91 0 62 14 amapchunkpl 152 1589 0 1466 10 4 6 9 0 158 0 amappl16 192 2373 0 1287 73 6 67 67 0 8 12 amappl15 184 62 0 59 1 0 1 1 0 8 0 amappl14 176 33 0 30 1 0 1 1 0 8 0 amappl13 168 1 0 1 1 1 0 1 0 8 0 amappl12 160 7 0 4 1 0 1 1 0 8 0 amappl11 152 44 0 33 1 0 1 1 0 8 0 amappl10 144 7 0 6 1 0 1 1 0 8 0 amappl9 136 638 0 631 1 0 1 1 0 8 0 amappl8 128 214 0 191 1 0 1 1 0 8 0 amappl7 120 42 0 37 1 0 1 1 0 8 0 amappl6 112 67 0 59 1 0 1 1 0 8 0 amappl5 104 130 0 121 1 0 1 1 0 8 0 amappl4 96 534 0 510 1 0 1 1 0 8 0 amappl3 88 116 0 110 1 0 1 1 0 8 0 amappl2 80 1878 0 1808 3 1 2 3 0 8 0 amappl1 72 15198 0 14789 26 17 9 20 0 8 0 amappl 80 770 0 733 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 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 13 0 2 1 0 1 1 0 8 0 uaddrrnd 24 328 0 312 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 328 0 312 1 0 1 1 0 8 0 vmmpekpl 168 6543 0 6520 2 0 2 2 0 8 0 vmmpepl 168 47558 0 45426 133 23 110 128 0 357 14 vmsppl 272 325 0 312 2 1 1 2 0 8 0 pdppl 4096 662 0 628 6 1 5 6 0 8 0 pvpl 32 169076 0 147705 213 7 206 211 0 265 30 pmappl 200 327 0 314 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 519 0 37 15 0 15 15 0 8 0