uvm_fault(0xffffffff82621838, 0xffff800000adb074, 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(0xffffffff82621838, 0xffff800000adb074, 0, 1) -> e rtable_satoplen(2,ffff800000adaf78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff800021b794a0, count: 0 ddb{1}> trace rtable_satoplen(2,ffff800000adaf78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(0,fffffd806d6dbb20,ffff800000adaf78,ffff800000adaf58,4) at rtable_lookup+0xeb sys/net/rtable.c:391 rtrequest_delete(ffff800021b79540,4,ffff800000aa7800,ffff800021b79610,0) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000adaf00,800100,ffff800000adaf58,0) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_purgeaddr(ffff800000adaf00) at in_purgeaddr+0xc6 in_remove_prefix sys/netinet/in.c:738 [inline] in_purgeaddr(ffff800000adaf00) at in_purgeaddr+0xc6 in_ifscrub sys/netinet/in.c:562 [inline] in_purgeaddr(ffff800000adaf00) at in_purgeaddr+0xc6 sys/netinet/in.c:678 in_ifinit(ffff800000aa7800,ffff800000adaf00,ffff800021b79990,1) at in_ifinit+0x234 sys/netinet/in.c:664 in_ioctl_change_ifaddr(8040691a,ffff800021b79980,ffff800000aa7800,1) at in_ioctl_change_ifaddr+0x5de sys/netinet/in.c:452 in_ioctl(8040691a,ffff800021b79980,ffff800000aa7800,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd806c882d90,8040691a,ffff800021b79980,ffff800020ab0290) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020ab0290,ffff800021b79a98,ffff800021b79ae0) at sys_ioctl+0x5b9 syscall(ffff800021b79b60) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800021b79b60) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,c47c4d7a010) at Xsyscall+0x128 end of kernel end trace frame: 0xc49e919d850, count: -12 ddb{1}> show registers rdi 0 rsi 0xfd rbp 0xffff800021b79400 rbx 0xffffffffffffff07 rdx 0xffff800000adaf7c rcx 0xffff800000adb075 rax 0xffff800000adb075 r8 0x4 r9 0x5 r10 0xced0aff678ce0d0c r11 0x9a25fc8164976373 r12 0 r13 0xffff800000adb075 r14 0xffffffff82500be8 inetdomain r15 0x4 rip 0xffffffff817a6f40 rtable_satoplen+0x150 cs 0x8 rflags 0x10283 __ALIGN_SIZE+0xf283 rsp 0xffff800021b793b0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=68312 stat=onproc flags process=0 proc=4000000 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab0508,0xffff800020ab1660 process=0xffff800020adc380 user=0xffff800021b74000, vmspace=0xfffffd807f00acf0 estcpu=30, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 71295 426269 89909 0 7 0 syz-executor.0 71295 329134 89909 0 2 0x4000000 syz-executor.0 33191 295103 70991 0 2 0 syz-executor.1 *33191 68312 70991 0 7 0x4000000 syz-executor.1 89909 519257 70068 0 3 0x82 nanosleep syz-executor.0 70991 426519 70068 0 3 0x82 nanosleep syz-executor.1 70793 354897 0 0 3 0x14200 bored sosplice 70068 454401 12008 0 3 0x82 thrsleep syz-fuzzer 70068 307201 12008 0 3 0x4000082 thrsleep syz-fuzzer 70068 106163 12008 0 3 0x4000082 thrsleep syz-fuzzer 70068 254022 12008 0 3 0x4000082 thrsleep syz-fuzzer 70068 278893 12008 0 3 0x4000082 thrsleep syz-fuzzer 70068 495660 12008 0 3 0x4000082 thrsleep syz-fuzzer 70068 42272 12008 0 3 0x4000082 thrsleep syz-fuzzer 70068 367129 12008 0 3 0x4000082 thrsleep syz-fuzzer 70068 28952 12008 0 3 0x4000082 thrsleep syz-fuzzer 70068 476941 12008 0 3 0x4000082 kqread syz-fuzzer 12008 358752 47861 0 3 0x10008a pause ksh 47861 186691 36110 0 3 0x92 select sshd 87085 13457 1 0 3 0x100083 ttyin getty 36110 375741 1 0 3 0x80 select sshd 30267 28898 22948 74 3 0x100092 bpf pflogd 22948 492475 1 0 3 0x80 netio pflogd 74614 257583 94628 73 3 0x100090 kqread syslogd 94628 133076 1 0 3 0x100082 netio syslogd 87147 257726 1 77 3 0x100090 poll dhclient 7922 498646 1 0 3 0x80 poll dhclient 36532 76649 0 0 2 0x14200 zerothread 39524 322590 0 0 3 0x14200 aiodoned aiodoned 44271 256135 0 0 3 0x14200 syncer update 47987 360766 0 0 3 0x14200 cleaner cleaner 24196 165140 0 0 3 0x14200 reaper reaper 70351 381849 0 0 3 0x14200 pgdaemon pagedaemon 84630 165741 0 0 3 0x14200 bored crynlk 1241 361302 0 0 3 0x14200 bored crypto 92969 370655 0 0 3 0x40014200 acpi0 acpi0 67872 183280 0 0 3 0x40014200 idle1 27880 364512 0 0 3 0x14200 bored softnet 63982 489992 0 0 3 0x14200 bored systqmp 669 124921 0 0 3 0x14200 bored systq 2555 6121 0 0 3 0x40014200 bored softclock 8087 151609 0 0 3 0x40014200 idle0 73293 309744 0 0 3 0x14200 bored smr 1 230359 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 33191 (syz-executor.1) thread 0xffff800020ab0290 (68312) exclusive rwlock netlock r = 0 (0xffffffff824fc348) #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 (0xffffffff82622388) #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 9525 7039K 7168K 78643K 11517 0 0 pcb 14 8K 8K 78643K 124 0 0 rtable 104 3K 4K 78643K 398 0 0 ifaddr 45 12K 12K 78643K 103 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1507 0 0 iov 0 0K 16K 78643K 102 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1218 77K 77K 78643K 1552 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 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 54 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 6 17K 25K 78643K 411 0 0 sigio 0 0K 0K 78643K 3 0 0 proc 60 63K 95K 78643K 518 0 0 subproc 32 2K 2K 78643K 68 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 18 0 0 in_multi 33 2K 2K 78643K 60 0 0 ether_multi 1 0K 0K 78643K 3 0 0 mrt 0 0K 0K 78643K 2 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 276 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 102 21K 22K 78643K 2157 0 0 UVM aobj 20 2K 2K 78643K 20 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 1 0K 1K 78643K 107 0 0 NDP 7 0K 0K 78643K 29 0 0 temp 135 3558K 3623K 78643K 6793 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 11 0 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 70 0 68 1 0 1 1 0 8 0 rtentry 112 67 0 25 2 0 2 2 0 8 0 unpcb 120 193 0 183 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 138 0 138 1 1 0 1 0 8 0 tcpcb 544 109 0 105 1 0 1 1 0 8 0 inpcb 280 428 0 419 2 0 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 8 0 4 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 ppxss 1128 12 0 12 3 2 1 1 0 8 1 pffrag 232 6 0 6 1 1 0 1 0 482 0 pffrnode 88 6 0 6 1 1 0 1 0 8 0 pffrent 40 270 0 270 1 1 0 1 0 8 0 pfosfp 40 846 0 846 5 0 5 5 0 8 5 pfosfpen 112 1428 0 1428 21 0 21 21 0 8 21 pfstitem 24 32 0 7 1 0 1 1 0 8 0 pfstkey 112 32 0 7 1 0 1 1 0 8 0 pfstate 328 32 0 7 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 302 0 88 14 0 14 14 0 8 0 art_table 32 303 0 88 2 0 2 2 0 8 0 art_node 16 66 0 28 1 0 1 1 0 8 0 sysvmsgpl 40 150 0 124 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 52 0 42 1 0 1 1 0 8 0 shmpl 112 18 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1977 0 576 46 0 46 46 0 8 0 ffsino 272 1977 0 576 94 0 94 94 0 8 0 nchpl 144 2682 0 1076 61 0 61 61 0 8 0 uvmvnodes 72 2262 0 0 42 0 42 42 0 8 0 vnodes 208 2262 0 0 120 0 120 120 0 8 0 namei 1024 7372 0 7372 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 7501 0 7501 8 7 1 7 0 8 1 plimitpl 152 32 0 24 1 0 1 1 0 8 0 sigapl 432 605 0 589 3 1 2 3 0 8 0 futexpl 56 5449 0 5449 1 0 1 1 0 8 1 knotepl 112 204 0 185 3 2 1 3 0 8 0 kqueuepl 104 88 0 86 1 0 1 1 0 8 0 pipepl 112 252 0 233 1 0 1 1 0 8 0 fdescpl 488 606 0 589 3 0 3 3 0 8 0 filepl 152 3242 0 3138 5 0 5 5 0 8 1 lockfpl 104 87 0 86 1 0 1 1 0 8 0 lockfspl 48 34 0 33 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 21 0 10 1 0 1 1 0 8 0 ucredpl 96 365 0 356 1 0 1 1 0 8 0 zombiepl 144 589 0 589 1 0 1 1 0 8 1 processpl 896 622 0 589 4 0 4 4 0 8 0 procpl 632 1314 0 1270 6 1 5 5 0 8 1 srpgc 64 4 0 4 1 1 0 1 0 8 0 sosppl 128 11 0 11 2 2 0 1 0 8 0 sockpl 384 700 0 679 4 0 4 4 0 8 1 mcl64k 65536 24 0 0 3 0 3 3 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 9 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 160 0 0 19 0 19 19 0 8 0 mtagpl 80 13 0 0 1 0 1 1 0 8 0 mbufpl 256 296 0 0 18 0 18 18 0 8 0 bufpl 256 6896 0 1314 349 0 349 349 0 8 0 anonpl 16 68275 0 53119 66 1 65 65 0 124 0 amapchunkpl 152 3457 0 3343 13 7 6 10 0 158 1 amappl16 192 2559 0 1670 47 1 46 46 0 8 0 amappl15 184 115 0 114 1 0 1 1 0 8 0 amappl14 176 40 0 38 1 0 1 1 0 8 0 amappl12 160 142 0 141 2 1 1 1 0 8 0 amappl11 152 211 0 192 1 0 1 1 0 8 0 amappl10 144 22 0 15 1 0 1 1 0 8 0 amappl9 136 642 0 636 1 0 1 1 0 8 0 amappl8 128 194 0 171 1 0 1 1 0 8 0 amappl7 120 48 0 43 1 0 1 1 0 8 0 amappl6 112 233 0 217 1 0 1 1 0 8 0 amappl5 104 283 0 270 1 0 1 1 0 8 0 amappl4 96 857 0 825 1 0 1 1 0 8 0 amappl3 88 127 0 122 1 0 1 1 0 8 0 amappl2 80 3881 0 3801 3 1 2 3 0 8 0 amappl1 72 22636 0 22183 25 15 10 20 0 8 0 amappl 80 1592 0 1552 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 19 0 0 1 0 1 1 0 8 0 uaddrrnd 24 606 0 589 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 606 0 589 1 0 1 1 0 8 0 vmmpekpl 168 8135 0 8096 3 1 2 2 0 8 0 vmmpepl 168 80425 0 78305 130 10 120 121 0 357 27 vmsppl 368 605 0 589 2 0 2 2 0 8 0 pdppl 4096 1219 0 1178 6 0 6 6 0 8 0 pvpl 32 230831 0 212421 162 5 157 162 0 265 0 pmappl 232 605 0 589 2 1 1 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 518 0 3 15 0 15 15 0 8 0