uvm_fault(0xffffffff82526440, 0xffff800000b47074, 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(0xffffffff82526440, 0xffff800000b47074, 0, 1) -> e rtable_satoplen(2,ffff800000b46f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff800021bacdb0, count: 0 ddb{0}> trace rtable_satoplen(2,ffff800000b46f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(0,fffffd80621fb920,ffff800000b46f78,ffff800000b46f58,4) at rtable_lookup+0xeb sys/net/rtable.c:391 rtrequest_delete(ffff800021bace50,4,ffff800000ace800,ffff800021bacf20,0) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000b46f00,800100,ffff800000b46f58,0) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_purgeaddr(ffff800000b46f00) at in_purgeaddr+0xc6 in_remove_prefix sys/netinet/in.c:738 [inline] in_purgeaddr(ffff800000b46f00) at in_purgeaddr+0xc6 in_ifscrub sys/netinet/in.c:562 [inline] in_purgeaddr(ffff800000b46f00) at in_purgeaddr+0xc6 sys/netinet/in.c:678 in_ifinit(ffff800000ace800,ffff800000b46f00,ffff800021bad2a0,1) at in_ifinit+0x234 sys/netinet/in.c:664 in_ioctl_change_ifaddr(8040691a,ffff800021bad290,ffff800000ace800,1) at in_ioctl_change_ifaddr+0x5de sys/netinet/in.c:452 in_ioctl(8040691a,ffff800021bad290,ffff800000ace800,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd80662e5350,8040691a,ffff800021bad290,ffff800020abe018) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020abe018,ffff800021bad3a8,ffff800021bad3f0) at sys_ioctl+0x5b9 syscall(ffff800021bad470) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800021bad470) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,fccd7d26010) at Xsyscall+0x128 end of kernel end trace frame: 0xfcef3819320, count: -12 ddb{0}> show registers rdi 0 rsi 0xfd rbp 0xffff800021bacd10 rbx 0xffffffffffffff07 rdx 0xffff800000b46f7c rcx 0xffff800000b47075 rax 0xffff800000b47075 r8 0x4 r9 0x5 r10 0xa1397190d6e23f3f r11 0x164d658670f1c364 r12 0 r13 0xffff800000b47075 r14 0xffffffff824b7180 inetdomain r15 0x4 rip 0xffffffff817b00f0 rtable_satoplen+0x150 cs 0x8 rflags 0x10283 __ALIGN_SIZE+0xf283 rsp 0xffff800021baccc0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.1) pid=455385 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020abe508,0xffffffff82677a30 process=0xffff800020a8b510 user=0xffff800021ba8000, vmspace=0xfffffd807f00aa10 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 39169 494875 20792 0 7 0 syz-executor.1 *39169 455385 20792 0 7 0x4000000 syz-executor.1 93876 252077 4568 0 2 0 syz-executor.0 93876 92000 4568 0 3 0x4000080 netcon syz-executor.0 20792 519943 92367 0 3 0x82 nanosleep syz-executor.1 4568 120719 92367 0 3 0x82 nanosleep syz-executor.0 28288 11771 1 0 3 0x100083 ttyin getty 21826 181669 0 0 3 0x14200 acct acct 73729 303967 0 0 3 0x14200 bored sosplice 92367 198682 48958 0 3 0x82 thrsleep syz-fuzzer 92367 167685 48958 0 3 0x4000082 thrsleep syz-fuzzer 92367 61392 48958 0 3 0x4000082 thrsleep syz-fuzzer 92367 22877 48958 0 3 0x4000082 thrsleep syz-fuzzer 92367 471582 48958 0 3 0x4000082 thrsleep syz-fuzzer 92367 274695 48958 0 3 0x4000082 thrsleep syz-fuzzer 92367 127251 48958 0 3 0x4000082 thrsleep syz-fuzzer 92367 225395 48958 0 3 0x4000082 thrsleep syz-fuzzer 92367 49838 48958 0 3 0x4000082 kqread syz-fuzzer 92367 311182 48958 0 3 0x4000082 thrsleep syz-fuzzer 48958 383342 1152 0 3 0x10008a pause ksh 1152 64089 42727 0 3 0x92 select sshd 42727 62941 1 0 3 0x80 select sshd 58285 474279 31184 74 3 0x100092 bpf pflogd 31184 474011 1 0 3 0x80 netio pflogd 80132 445960 74509 73 3 0x100090 kqread syslogd 74509 523193 1 0 3 0x100082 netio syslogd 10679 270466 1 77 3 0x100090 poll dhclient 1511 418570 1 0 3 0x80 poll dhclient 34385 182690 0 0 2 0x14200 zerothread 92853 236797 0 0 3 0x14200 aiodoned aiodoned 46270 464745 0 0 3 0x14200 syncer update 54173 80050 0 0 3 0x14200 cleaner cleaner 30774 299562 0 0 3 0x14200 reaper reaper 50648 67378 0 0 3 0x14200 pgdaemon pagedaemon 96221 238655 0 0 3 0x14200 bored crynlk 25818 404984 0 0 3 0x14200 bored crypto 76803 236413 0 0 3 0x40014200 acpi0 acpi0 19353 55694 0 0 3 0x40014200 idle1 80886 29022 0 0 3 0x14200 bored softnet 46954 321048 0 0 3 0x14200 bored systqmp 85935 418956 0 0 3 0x14200 bored systq 93581 409052 0 0 3 0x40014200 bored softclock 76061 340637 0 0 3 0x40014200 idle0 78939 361675 0 0 3 0x14200 bored smr 1 97553 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 39169 (syz-executor.1) thread 0xffff800020abe018 (455385) 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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9654 7247K 8343K 78643K 26202 0 0 pcb 13 12K 14K 78643K 1497 0 0 rtable 127 13K 15K 78643K 4578 0 0 ifaddr 111 27K 30K 78643K 1361 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1752 0 0 iov 0 0K 28K 78643K 1384 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1223 77K 78K 78643K 7159 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 82 0 0 VM map 42 21K 21K 78643K 77 0 0 sem 12 0K 1K 78643K 1537 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 6 17K 25K 78643K 6837 0 0 sigio 0 0K 0K 78643K 123 0 0 proc 62 63K 95K 78643K 2641 0 0 subproc 32 2K 2K 78643K 684 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 1K 78643K 612 0 0 in_multi 38 2K 2K 78643K 941 0 0 ether_multi 1 0K 0K 78643K 109 0 0 mrt 0 0K 0K 78643K 54 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 90 397K 397K 78643K 90 0 0 exec 0 0K 1K 78643K 1428 0 0 pfkey data 0 0K 4K 78643K 2 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 182 316K 320K 78643K 25281 0 0 UVM aobj 130 6K 6K 78643K 135 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 2K 78643K 1649 0 0 NDP 27 0K 1K 78643K 432 0 0 temp 277 3566K 4206K 78643K 272992 0 0 kqueue 0 0K 0K 78643K 59 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 64 157 0 151 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 513 0 511 1 0 1 1 0 8 0 rtentry 112 799 0 753 2 0 2 2 0 8 0 unpcb 120 3629 0 3607 8 7 1 2 0 8 0 syncache 264 34 0 34 14 14 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 62 0 62 5 5 0 1 0 8 0 tcpcb 544 9905 0 9900 84 83 1 15 0 8 0 inpcb 280 16078 0 16069 66 64 2 13 0 8 1 rttmr 72 16 0 16 10 10 0 1 0 8 0 ip6q 72 3 0 2 3 2 1 1 0 8 0 ip6af 40 3 0 3 1 1 0 1 0 8 0 nd6 48 110 0 106 6 5 1 1 0 8 0 pkpcb 40 73 0 73 18 17 1 1 0 8 1 swfcl 56 4 0 0 1 0 1 1 0 8 0 ppxss 1128 187 0 187 22 21 1 1 0 8 1 pffrag 232 184 0 184 29 28 1 1 0 482 1 pffrnode 88 184 0 184 29 28 1 1 0 8 1 pffrent 40 5722 0 5722 29 28 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 24 579 0 523 1 0 1 1 0 8 0 pfstkey 112 579 0 523 3 0 3 3 0 8 0 pfstate 328 579 0 523 9 2 7 7 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 18 0 17 11 10 1 3 0 8 0 art_heap4 256 3308 0 3061 52 36 16 18 0 8 0 art_table 32 3326 0 3078 4 1 3 3 0 8 0 art_node 16 796 0 754 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 1533 0 1523 1 0 1 1 0 8 0 shmpl 112 133 0 5 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 11875 0 10439 48 1 47 47 0 8 0 ffsino 272 11875 0 10439 98 2 96 96 0 8 0 nchpl 144 24041 0 23554 61 41 20 61 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 79152 0 79152 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 42 0 2 6 0 6 6 0 8 0 vmpool 552 75 0 35 4 1 3 3 0 8 0 scsiplug 64 6 0 6 5 5 0 1 0 8 0 scxspl 192 77523 0 77523 58 57 1 7 0 8 1 plimitpl 152 567 0 559 1 0 1 1 0 8 0 sigapl 432 6927 0 6911 3 1 2 3 0 8 0 futexpl 56 160883 0 160883 1 0 1 1 0 8 1 knotepl 112 1672 0 1653 3 2 1 3 0 8 0 kqueuepl 104 2312 0 2309 19 18 1 4 0 8 0 pipepl 112 4076 0 4057 15 13 2 2 0 8 1 fdescpl 488 6928 0 6911 3 0 3 3 0 8 0 filepl 152 68068 0 67963 94 88 6 14 0 8 1 lockfpl 104 2341 0 2340 1 0 1 1 0 8 0 lockfspl 48 840 0 839 1 0 1 1 0 8 0 sessionpl 112 60 0 49 1 0 1 1 0 8 0 pgrppl 48 117 0 106 1 0 1 1 0 8 0 ucredpl 96 6811 0 6802 1 0 1 1 0 8 0 zombiepl 144 6913 0 6913 2 1 1 1 0 8 1 processpl 896 6947 0 6913 4 0 4 4 0 8 0 procpl 632 22393 0 22348 7 2 5 5 0 8 0 srpgc 64 57 0 57 20 19 1 1 0 8 1 sosppl 128 160 0 160 27 26 1 1 0 8 1 sockpl 384 20415 0 20381 111 106 5 22 0 8 0 mcl64k 65536 403 0 0 43 38 5 34 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 41 0 0 2 0 2 2 0 8 0 mcl9k 9216 25 0 0 2 0 2 2 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 33 0 0 4 1 3 3 0 8 0 mcl2k2 2112 10 0 0 1 0 1 1 0 8 0 mcl2k 2048 189 0 0 21 5 16 21 0 8 0 mtagpl 80 101 0 0 1 0 1 1 0 8 0 mbufpl 256 965 0 0 29 0 29 29 0 8 0 bufpl 256 28951 0 21903 441 0 441 441 0 8 0 anonpl 16 848846 0 831216 252 167 85 97 0 124 3 amapchunkpl 152 50453 0 50324 117 106 11 19 0 158 4 amappl16 192 39741 0 38626 294 231 63 68 0 8 6 amappl15 184 1788 0 1787 1 0 1 1 0 8 0 amappl14 176 1849 0 1848 1 0 1 1 0 8 0 amappl13 168 680 0 678 5 4 1 1 0 8 0 amappl12 160 598 0 595 1 0 1 1 0 8 0 amappl11 152 1000 0 985 1 0 1 1 0 8 0 amappl10 144 459 0 454 1 0 1 1 0 8 0 amappl9 136 2071 0 2065 1 0 1 1 0 8 0 amappl8 128 1637 0 1588 2 0 2 2 0 8 0 amappl7 120 648 0 637 1 0 1 1 0 8 0 amappl6 112 928 0 917 1 0 1 1 0 8 0 amappl5 104 1060 0 1046 1 0 1 1 0 8 0 amappl4 96 7469 0 7431 1 0 1 1 0 8 0 amappl3 88 2033 0 2027 1 0 1 1 0 8 0 amappl2 80 52991 0 52903 3 1 2 3 0 8 0 amappl1 72 167507 0 167060 25 15 10 20 0 8 0 amappl 80 23408 0 23342 3 1 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 64 134 0 5 3 0 3 3 0 8 0 uaddrrnd 24 7003 0 6911 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7003 0 6911 1 0 1 1 0 8 0 vmmpekpl 168 59413 0 59371 4 1 3 3 0 8 0 vmmpepl 168 897003 0 894547 514 368 146 170 0 357 34 vmsppl 368 6927 0 6911 2 0 2 2 0 8 0 pdppl 4096 14013 0 13932 15 4 11 11 0 8 0 pvpl 32 2229800 0 2209135 527 328 199 234 0 265 11 pmappl 232 7002 0 6946 5 1 4 4 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 817 0 185 20 0 20 20 0 8 0