uvm_fault(0xffffffff82526440, 0xffff800000acb074, 0, 1) -> e kernel: page fault trap, code=0 Stopped at rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff82526440, 0xffff800000acb074, 0, 1) -> e rtable_satoplen(2,ffff800000acaf78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff80002379b0b0, count: 0 ddb{1}> trace rtable_satoplen(2,ffff800000acaf78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(0,fffffd8068b85e20,ffff800000acaf78,ffff800000acaf58,4) at rtable_lookup+0xeb sys/net/rtable.c:391 rtrequest_delete(ffff80002379b150,4,ffff800000ad5800,ffff80002379b220,0) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000acaf00,800100,ffff800000acaf58,0) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_purgeaddr(ffff800000acaf00) at in_purgeaddr+0xc6 in_remove_prefix sys/netinet/in.c:738 [inline] in_purgeaddr(ffff800000acaf00) at in_purgeaddr+0xc6 in_ifscrub sys/netinet/in.c:562 [inline] in_purgeaddr(ffff800000acaf00) at in_purgeaddr+0xc6 sys/netinet/in.c:678 in_ifinit(ffff800000ad5800,ffff800000acaf00,ffff80002379b5a0,1) at in_ifinit+0x234 sys/netinet/in.c:664 in_ioctl_change_ifaddr(8040691a,ffff80002379b590,ffff800000ad5800,1) at in_ioctl_change_ifaddr+0x5de sys/netinet/in.c:452 in_ioctl(8040691a,ffff80002379b590,ffff800000ad5800,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd80674a6620,8040691a,ffff80002379b590,ffff800020ab0780) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020ab0780,ffff80002379b6a8,ffff80002379b6f0) at sys_ioctl+0x5b9 syscall(ffff80002379b770) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff80002379b770) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,b7066f29010) at Xsyscall+0x128 end of kernel end trace frame: 0xb7278449ab0, count: -12 ddb{1}> show registers rdi 0 rsi 0xfd rbp 0xffff80002379b010 rbx 0xffffffffffffff07 rdx 0xffff800000acaf7c rcx 0xffff800000acb075 rax 0xffff800000acb075 r8 0x4 r9 0x5 r10 0xa083d9a5cbafa42a r11 0x30b527f8574b89cb r12 0 r13 0xffff800000acb075 r14 0xffffffff824b7180 inetdomain r15 0x4 rip 0xffffffff817b00f0 rtable_satoplen+0x150 cs 0x8 rflags 0x10283 __ALIGN_SIZE+0xf283 rsp 0xffff80002379afc0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.0) pid=464323 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab09f8,0xffff800020ab0518 process=0xffff800020add500 user=0xffff800023796000, vmspace=0xfffffd807f00a730 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 82526 30198 10120 0 2 0 syz-executor.0 *82526 464323 10120 0 7 0x4000000 syz-executor.0 82526 338711 10120 0 7 0x4000080 syz-executor.0 90074 321901 97265 0 3 0x82 nanosleep syz-executor.1 10120 202773 97265 0 3 0x82 nanosleep syz-executor.0 12603 479538 0 0 3 0x14200 acct acct 26633 478914 0 0 3 0x14200 bored sosplice 97265 69637 51512 0 3 0x82 thrsleep syz-fuzzer 97265 127363 51512 0 3 0x4000082 nanosleep syz-fuzzer 97265 159716 51512 0 3 0x4000082 kqread syz-fuzzer 97265 445470 51512 0 3 0x4000082 thrsleep syz-fuzzer 97265 254422 51512 0 3 0x4000082 thrsleep syz-fuzzer 97265 192184 51512 0 3 0x4000082 thrsleep syz-fuzzer 97265 169776 51512 0 3 0x4000082 thrsleep syz-fuzzer 97265 440285 51512 0 3 0x4000082 thrsleep syz-fuzzer 97265 492796 51512 0 3 0x4000082 thrsleep syz-fuzzer 97265 495214 51512 0 3 0x4000082 thrsleep syz-fuzzer 51512 344829 72794 0 3 0x10008a pause ksh 72794 145188 54266 0 3 0x92 select sshd 78924 73697 1 0 3 0x100083 ttyin getty 54266 210556 1 0 3 0x80 select sshd 72471 241181 86965 74 3 0x100092 bpf pflogd 86965 154640 1 0 3 0x80 netio pflogd 49627 87425 84858 73 3 0x100090 kqread syslogd 84858 75253 1 0 3 0x100082 netio syslogd 95520 44977 1 77 3 0x100090 poll dhclient 43857 373618 1 0 3 0x80 poll dhclient 77733 250088 0 0 3 0x14200 pgzero zerothread 56088 94137 0 0 3 0x14200 aiodoned aiodoned 10959 134284 0 0 3 0x14200 syncer update 33234 31018 0 0 3 0x14200 cleaner cleaner 68767 474424 0 0 3 0x14200 reaper reaper 55252 172762 0 0 3 0x14200 pgdaemon pagedaemon 35015 296938 0 0 3 0x14200 bored crynlk 39775 179583 0 0 3 0x14200 bored crypto 48057 328012 0 0 3 0x40014200 acpi0 acpi0 39663 515363 0 0 3 0x40014200 idle1 21975 277968 0 0 3 0x14200 bored softnet 81363 74818 0 0 3 0x14200 bored systqmp 37058 134166 0 0 3 0x14200 bored systq 61250 179848 0 0 3 0x40014200 bored softclock 49135 80916 0 0 3 0x40014200 idle0 12191 336313 0 0 3 0x14200 bored smr 1 323856 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 82526 (syz-executor.0) thread 0xffff800020ab0780 (464323) exclusive rwlock netlock r = 0 (0xffffffff8248fc78) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 in_ioctl_change_ifaddr+0x3f #2 in_ioctl+0x205 sys/netinet/in.c:234 #3 ifioctl+0xb64 sys/net/if.c:2202 #4 sys_ioctl+0x5b9 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82649290) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline] #1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9550 6481K 6803K 78643K 11720 0 0 pcb 13 10K 12K 78643K 134 0 0 rtable 111 5K 5K 78643K 633 0 0 ifaddr 71 15K 15K 78643K 177 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1501 0 0 iov 0 0K 24K 78643K 104 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1213 76K 77K 78643K 1785 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 8 0 0 VM map 8 4K 4K 78643K 10 0 0 sem 12 0K 0K 78643K 126 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 595 0 0 sigio 0 0K 0K 78643K 5 0 0 proc 60 63K 95K 78643K 684 0 0 subproc 32 2K 2K 78643K 119 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 33 2K 2K 78643K 101 0 0 ether_multi 1 0K 0K 78643K 5 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 84 371K 371K 78643K 84 0 0 exec 0 0K 1K 78643K 322 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 125 71K 71K 78643K 2996 0 0 UVM aobj 32 4K 4K 78643K 32 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 114 0 0 NDP 15 0K 0K 78643K 52 0 0 temp 193 3564K 3633K 78643K 17062 0 0 kqueue 0 0K 0K 78643K 4 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 22 0 16 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 103 0 101 1 0 1 1 0 8 0 rtentry 112 117 0 73 2 0 2 2 0 8 0 unpcb 120 389 0 377 2 1 1 2 0 8 0 syncache 264 7 0 7 3 3 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 544 319 0 315 2 1 1 2 0 8 0 inpcb 280 1119 0 1110 14 9 5 13 0 8 4 nd6 48 14 0 10 1 0 1 1 0 8 0 pkpcb 40 16 0 16 4 3 1 1 0 8 1 swfcl 56 1 0 0 1 0 1 1 0 8 0 ppxss 1128 14 0 14 1 0 1 1 0 8 1 pffrag 232 11 0 11 2 1 1 1 0 482 1 pffrnode 88 11 0 11 2 1 1 1 0 8 1 pffrent 40 325 0 325 2 1 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 54 0 11 1 0 1 1 0 8 0 pfstkey 112 54 0 11 2 0 2 2 0 8 0 pfstate 328 54 0 11 4 0 4 4 0 8 0 pfrule 1360 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 3 0 2 3 2 1 3 0 8 0 art_heap4 256 491 0 268 18 3 15 15 0 8 0 art_table 32 494 0 270 2 0 2 2 0 8 0 art_node 16 116 0 76 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 16 1 0 1 1 0 8 0 semapl 112 124 0 114 1 0 1 1 0 8 0 shmpl 112 30 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2419 0 1013 46 0 46 46 0 8 0 ffsino 272 2419 0 1013 95 0 95 95 0 8 0 nchpl 144 3581 0 1985 61 0 61 61 0 8 0 uvmvnodes 72 2793 0 0 51 0 51 51 0 8 0 vnodes 208 2793 0 0 147 0 147 147 0 8 0 namei 1024 12447 0 12447 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 552 8 0 2 2 1 1 1 0 8 0 scxspl 192 10032 0 10032 8 5 3 5 0 8 3 plimitpl 152 59 0 51 1 0 1 1 0 8 0 sigapl 432 780 0 765 3 1 2 3 0 8 0 futexpl 56 12260 0 12260 1 0 1 1 0 8 1 knotepl 112 220 0 201 1 0 1 1 0 8 0 kqueuepl 104 116 0 114 1 0 1 1 0 8 0 pipepl 112 574 0 555 2 0 2 2 0 8 1 fdescpl 488 781 0 765 3 0 3 3 0 8 0 filepl 152 7365 0 7263 17 9 8 14 0 8 4 lockfpl 104 180 0 179 1 0 1 1 0 8 0 lockfspl 48 62 0 61 1 0 1 1 0 8 0 sessionpl 112 23 0 12 1 0 1 1 0 8 0 pgrppl 48 32 0 21 1 0 1 1 0 8 0 ucredpl 96 1940 0 1931 1 0 1 1 0 8 0 zombiepl 144 765 0 764 1 0 1 1 0 8 0 processpl 896 798 0 764 4 0 4 4 0 8 0 procpl 632 1986 0 1941 5 0 5 5 0 8 1 srpgc 64 10 0 10 2 1 1 1 0 8 1 sosppl 128 4 0 4 2 2 0 1 0 8 0 sockpl 384 1645 0 1621 23 16 7 23 0 8 4 mcl64k 65536 15 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 11 0 0 2 0 2 2 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 10 0 0 2 0 2 2 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 173 0 0 21 0 21 21 0 8 0 mtagpl 80 17 0 0 1 0 1 1 0 8 0 mbufpl 256 355 0 0 21 0 21 21 0 8 0 bufpl 256 7927 0 1316 414 0 414 414 0 8 0 anonpl 16 97100 0 79416 79 1 78 78 0 124 0 amapchunkpl 152 5408 0 5265 21 14 7 14 0 158 0 amappl16 192 3463 0 2401 55 1 54 55 0 8 0 amappl15 184 9 0 8 2 1 1 1 0 8 0 amappl14 176 129 0 126 1 0 1 1 0 8 0 amappl13 168 87 0 85 1 0 1 1 0 8 0 amappl12 160 70 0 67 2 1 1 1 0 8 0 amappl11 152 67 0 51 1 0 1 1 0 8 0 amappl10 144 130 0 122 1 0 1 1 0 8 0 amappl9 136 819 0 813 1 0 1 1 0 8 0 amappl8 128 383 0 351 3 1 2 2 0 8 0 amappl7 120 164 0 156 1 0 1 1 0 8 0 amappl6 112 87 0 74 1 0 1 1 0 8 0 amappl5 104 235 0 219 1 0 1 1 0 8 0 amappl4 96 1048 0 1014 2 1 1 2 0 8 0 amappl3 88 208 0 203 1 0 1 1 0 8 0 amappl2 80 5073 0 5000 3 1 2 3 0 8 0 amappl1 72 27665 0 27215 25 15 10 20 0 8 0 amappl 80 2327 0 2278 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 31 0 0 1 0 1 1 0 8 0 uaddrrnd 24 789 0 765 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 789 0 765 1 0 1 1 0 8 0 vmmpekpl 168 10262 0 10223 2 0 2 2 0 8 0 vmmpepl 168 106339 0 104104 156 17 139 143 0 357 37 vmsppl 368 780 0 765 2 0 2 2 0 8 0 pdppl 4096 1585 0 1540 7 0 7 7 0 8 1 pvpl 32 293291 0 272404 188 7 181 187 0 265 0 pmappl 232 788 0 767 3 1 2 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 598 0 8 17 0 17 17 0 8 0