uvm_fault(0xffffffff825222b0, 0xffff800000ae1076, 0, 1) -> e kernel: page fault trap, code=0 Stopped at rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff825222b0, 0xffff800000ae1076, 0, 1) -> e rtable_satoplen(2,ffff800000ae0f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff8000239b4d10, count: 0 ddb{0}> trace rtable_satoplen(2,ffff800000ae0f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(0,fffffd806f1fa020,ffff800000ae0f78,ffff800000ae0f58,4) at rtable_lookup+0xeb sys/net/rtable.c:391 rtrequest_delete(ffff8000239b4db0,4,ffff800000aca800,ffff8000239b4e80,0) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000ae0f00,800100,ffff800000ae0f58,0) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_ioctl_change_ifaddr(8040691a,ffff8000239b5110,ffff800000aca800,1) at in_ioctl_change_ifaddr+0x355 in_remove_prefix sys/netinet/in.c:738 [inline] in_ioctl_change_ifaddr(8040691a,ffff8000239b5110,ffff800000aca800,1) at in_ioctl_change_ifaddr+0x355 in_ifscrub sys/netinet/in.c:562 [inline] in_ioctl_change_ifaddr(8040691a,ffff8000239b5110,ffff800000aca800,1) at in_ioctl_change_ifaddr+0x355 sys/netinet/in.c:432 in_ioctl(8040691a,ffff8000239b5110,ffff800000aca800,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd807ccaf038,8040691a,ffff8000239b5110,ffff800020ab0508) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020ab0508,ffff8000239b5228,ffff8000239b5270) at sys_ioctl+0x5b9 syscall(ffff8000239b52f0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff8000239b52f0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,ee57ae750e0) at Xsyscall+0x128 end of kernel end trace frame: 0xee7c85a7f90, count: -10 ddb{0}> show registers rdi 0 rsi 0xff rbp 0xffff8000239b4c70 rbx 0xffffffffffffff05 rdx 0xffff800000ae0f7c rcx 0xffff800000ae1077 rax 0xffff800000ae1077 r8 0x4 r9 0x7 r10 0xd2b745c0f2eb1290 r11 0x9f1b07c55150a010 r12 0 r13 0xffff800000ae1077 r14 0xffffffff824badb8 inetdomain r15 0x4 rip 0xffffffff8137f740 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff8000239b4c20 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.1) pid=254621 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab0ee8,0xffff800020ab02a0 process=0xffff800020adce00 user=0xffff8000239b0000, vmspace=0xfffffd807f007000 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 66140 43340 73653 0 2 0 syz-executor.1 66140 160406 73653 0 3 0x4000080 fsleep syz-executor.1 *66140 254621 73653 0 7 0x4000000 syz-executor.1 90056 203094 49766 0 7 0 syz-executor.0 90056 113093 49766 0 3 0x4000080 piperd syz-executor.0 90056 459630 49766 0 2 0x4000000 syz-executor.0 73653 426891 61118 0 3 0x82 nanosleep syz-executor.1 49766 300322 61118 0 3 0x82 nanosleep syz-executor.0 70937 371769 1 0 3 0x100083 ttyin getty 20355 259940 0 0 3 0x14200 acct acct 14076 339115 0 0 3 0x14200 bored sosplice 61118 254599 20997 0 3 0x82 thrsleep syz-fuzzer 61118 451016 20997 0 3 0x4000082 thrsleep syz-fuzzer 61118 148921 20997 0 3 0x4000082 thrsleep syz-fuzzer 61118 271258 20997 0 3 0x4000082 thrsleep syz-fuzzer 61118 144096 20997 0 3 0x4000082 thrsleep syz-fuzzer 61118 300220 20997 0 3 0x4000082 thrsleep syz-fuzzer 61118 499917 20997 0 3 0x4000082 thrsleep syz-fuzzer 61118 47679 20997 0 3 0x4000082 thrsleep syz-fuzzer 61118 333778 20997 0 3 0x4000082 thrsleep syz-fuzzer 61118 67406 20997 0 3 0x4000082 kqread syz-fuzzer 20997 420399 97351 0 3 0x10008a pause ksh 97351 97260 97192 0 3 0x92 select sshd 97192 356890 1 0 3 0x80 select sshd 85984 264307 68023 74 3 0x100092 bpf pflogd 68023 217054 1 0 3 0x80 netio pflogd 9026 335541 45958 73 2 0x100090 syslogd 45958 236074 1 0 3 0x100082 netio syslogd 79825 13440 1 77 3 0x100090 poll dhclient 81737 193954 1 0 3 0x80 poll dhclient 60957 123969 0 0 2 0x14200 zerothread 31963 469903 0 0 3 0x14200 aiodoned aiodoned 88894 79199 0 0 3 0x14200 syncer update 66162 124577 0 0 3 0x14200 cleaner cleaner 47757 114220 0 0 3 0x14200 reaper reaper 79502 263925 0 0 3 0x14200 pgdaemon pagedaemon 85315 353489 0 0 3 0x14200 bored crynlk 61355 69890 0 0 3 0x14200 bored crypto 50951 138160 0 0 3 0x40014200 acpi0 acpi0 50093 221680 0 0 3 0x40014200 idle1 77049 104150 0 0 3 0x14200 bored softnet 50997 256672 0 0 3 0x14200 bored systqmp 68239 108886 0 0 3 0x14200 bored systq 83329 126587 0 0 3 0x40014200 bored softclock 81575 396918 0 0 3 0x40014200 idle0 37484 130973 0 0 3 0x14200 bored smr 1 251841 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 66140 (syz-executor.1) thread 0xffff800020ab0508 (254621) exclusive rwlock netlock r = 0 (0xffffffff824d0138) #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 (0xffffffff82668f60) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9590 6444K 7343K 78643K 14581 0 0 pcb 13 8K 8K 78643K 326 0 0 rtable 113 5K 5K 78643K 1272 0 0 ifaddr 81 17K 18K 78643K 340 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1558 0 0 iov 0 0K 16K 78643K 447 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1215 76K 77K 78643K 2613 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 30 0 0 VM map 9 4K 4K 78643K 13 0 0 sem 12 0K 0K 78643K 319 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1809 196K 290K 78643K 12766 0 0 file desc 6 17K 25K 78643K 1392 0 0 sigio 0 0K 0K 78643K 30 0 0 proc 60 63K 95K 78643K 986 0 0 subproc 32 2K 2K 78643K 206 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 86 0 0 in_multi 29 1K 2K 78643K 233 0 0 ether_multi 1 0K 0K 78643K 13 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 78 344K 344K 78643K 78 0 0 exec 0 0K 1K 78643K 503 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 129 71K 81K 78643K 5914 0 0 UVM aobj 114 4K 4K 78643K 117 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 309 0 0 NDP 19 0K 0K 78643K 109 0 0 temp 222 3564K 3640K 78643K 40302 0 0 kqueue 0 0K 0K 78643K 15 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 59 0 51 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 111 0 109 1 0 1 1 0 8 0 rtentry 112 252 0 209 2 0 2 2 0 8 0 unpcb 120 1165 0 1153 2 1 1 2 0 8 0 syncache 264 11 0 11 5 5 0 1 0 8 0 tcpqe 32 100 0 100 4 4 0 1 0 8 0 tcpcb 544 2226 0 2222 5 4 1 3 0 8 0 inpcb 280 4874 0 4865 9 7 2 4 0 8 1 rttmr 72 1 0 0 1 0 1 1 0 8 0 nd6 48 31 0 28 2 1 1 1 0 8 0 pkpcb 40 8 0 8 3 3 0 1 0 8 0 ppxss 1128 43 0 43 5 4 1 1 0 8 1 pffrag 232 39 0 39 6 5 1 1 0 482 1 pffrnode 88 39 0 39 6 5 1 1 0 8 1 pffrent 40 1158 0 1158 6 5 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 24 141 0 86 1 0 1 1 0 8 0 pfstkey 112 141 0 86 2 0 2 2 0 8 0 pfstate 328 141 0 86 6 0 6 6 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 1025 0 787 24 7 17 17 0 8 0 art_table 32 1027 0 788 3 0 3 3 0 8 0 art_node 16 249 0 209 1 0 1 1 0 8 0 sysvmsgpl 40 73 0 64 1 0 1 1 0 8 0 semapl 112 317 0 307 1 0 1 1 0 8 0 shmpl 112 115 0 3 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3460 0 2059 46 0 46 46 0 8 0 ffsino 272 3460 0 2059 95 1 94 95 0 8 0 nchpl 144 5614 0 4002 61 0 61 61 0 8 0 uvmvnodes 72 4553 0 0 83 0 83 83 0 8 0 vnodes 208 4553 0 0 240 0 240 240 0 8 0 namei 1024 18309 0 18309 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 7 0 0 1 0 1 1 0 8 0 vmpool 552 11 0 4 2 1 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 16586 0 16586 11 10 1 4 0 8 1 plimitpl 152 132 0 124 1 0 1 1 0 8 0 sigapl 432 1563 0 1547 3 1 2 3 0 8 0 futexpl 56 37004 0 37003 1 0 1 1 0 8 0 knotepl 112 501 0 482 3 2 1 3 0 8 0 kqueuepl 104 348 0 346 1 0 1 1 0 8 0 pipepl 112 1112 0 1091 1 0 1 1 0 8 0 fdescpl 488 1564 0 1547 3 0 3 3 0 8 0 filepl 152 14926 0 14822 10 5 5 7 0 8 1 lockfpl 104 462 0 461 1 0 1 1 0 8 0 lockfspl 48 158 0 157 1 0 1 1 0 8 0 sessionpl 112 29 0 18 1 0 1 1 0 8 0 pgrppl 48 41 0 30 1 0 1 1 0 8 0 ucredpl 96 1370 0 1361 1 0 1 1 0 8 0 zombiepl 144 1547 0 1547 1 0 1 1 0 8 1 processpl 896 1581 0 1547 4 0 4 4 0 8 0 procpl 632 4636 0 4589 5 0 5 5 0 8 0 srpgc 64 18 0 18 4 4 0 1 0 8 0 sosppl 128 16 0 16 5 5 0 1 0 8 0 sockpl 384 6173 0 6150 15 10 5 8 0 8 1 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 12 0 0 2 0 2 2 0 8 0 mcl9k 9216 8 0 0 1 0 1 1 0 8 0 mcl8k 8192 12 0 0 2 0 2 2 0 8 0 mcl4k 4096 18 0 0 3 1 2 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 182 0 0 22 0 22 22 0 8 0 mtagpl 80 39 0 0 1 0 1 1 0 8 0 mbufpl 256 517 0 0 27 0 27 27 0 8 0 bufpl 256 9549 0 2501 441 0 441 441 0 8 0 anonpl 16 200901 0 181678 108 27 81 93 0 124 0 amapchunkpl 152 11492 0 11357 28 22 6 13 0 158 0 amappl16 192 7967 0 6874 99 43 56 67 0 8 0 amappl15 184 224 0 222 1 0 1 1 0 8 0 amappl14 176 179 0 176 1 0 1 1 0 8 0 amappl13 168 123 0 123 2 2 0 1 0 8 0 amappl12 160 319 0 317 1 0 1 1 0 8 0 amappl11 152 417 0 399 1 0 1 1 0 8 0 amappl10 144 135 0 130 1 0 1 1 0 8 0 amappl9 136 798 0 791 1 0 1 1 0 8 0 amappl8 128 359 0 319 2 0 2 2 0 8 0 amappl7 120 214 0 205 1 0 1 1 0 8 0 amappl6 112 398 0 385 1 0 1 1 0 8 0 amappl5 104 521 0 507 1 0 1 1 0 8 0 amappl4 96 1623 0 1590 1 0 1 1 0 8 0 amappl3 88 581 0 576 1 0 1 1 0 8 0 amappl2 80 11133 0 11051 3 1 2 3 0 8 0 amappl1 72 45151 0 44690 25 15 10 20 0 8 0 amappl 80 5067 0 5021 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 64 116 0 3 2 0 2 2 0 8 0 uaddrrnd 24 1575 0 1547 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1575 0 1547 1 0 1 1 0 8 0 vmmpekpl 168 17343 0 17307 2 0 2 2 0 8 0 vmmpepl 168 205958 0 203585 190 63 127 143 0 357 23 vmsppl 368 1563 0 1547 2 0 2 2 0 8 0 pdppl 4096 3157 0 3109 7 0 7 7 0 8 0 pvpl 32 544323 0 521779 240 47 193 215 0 265 7 pmappl 232 1574 0 1551 3 1 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 643 0 17 18 0 18 18 0 8 0