uvm_fault(0xffffffff82620718, 0xffff800000ad7074, 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(0xffffffff82620718, 0xffff800000ad7074, 0, 1) -> e rtable_satoplen(2,ffff800000ad6f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff800021d95350, count: 0 ddb{1}> trace rtable_satoplen(2,ffff800000ad6f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(0,fffffd8068e38120,ffff800000ad6f78,ffff800000ad6f58,4) at rtable_lookup+0xeb sys/net/rtable.c:391 rtrequest_delete(ffff800021d953f0,4,ffff800000aa9800,ffff800021d954c0,0) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000ad6f00,800100,ffff800000ad6f58,0) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_purgeaddr(ffff800000ad6f00) at in_purgeaddr+0xc6 in_remove_prefix sys/netinet/in.c:738 [inline] in_purgeaddr(ffff800000ad6f00) at in_purgeaddr+0xc6 in_ifscrub sys/netinet/in.c:562 [inline] in_purgeaddr(ffff800000ad6f00) at in_purgeaddr+0xc6 sys/netinet/in.c:678 in_ifinit(ffff800000aa9800,ffff800000ad6f00,ffff800021d95840,1) at in_ifinit+0x234 sys/netinet/in.c:664 in_ioctl_change_ifaddr(8040691a,ffff800021d95830,ffff800000aa9800,1) at in_ioctl_change_ifaddr+0x5de sys/netinet/in.c:452 in_ioctl(8040691a,ffff800021d95830,ffff800000aa9800,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd8070cbf790,8040691a,ffff800021d95830,ffff800020ab0018) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020ab0018,ffff800021d95948,ffff800021d95990) at sys_ioctl+0x5b9 syscall(ffff800021d95a10) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800021d95a10) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,c1ed4268010) at Xsyscall+0x128 end of kernel end trace frame: 0xc20e3e6f030, count: -12 ddb{1}> show registers rdi 0 rsi 0xfd rbp 0xffff800021d952b0 rbx 0xffffffffffffff07 rdx 0xffff800000ad6f7c rcx 0xffff800000ad7075 rax 0xffff800000ad7075 r8 0x4 r9 0x5 r10 0x554a411a0c5aad81 r11 0xb179497eff3c796d r12 0 r13 0xffff800000ad7075 r14 0xffffffff824cfef0 inetdomain r15 0x4 rip 0xffffffff8102c080 rtable_satoplen+0x150 cs 0x8 rflags 0x10283 __ALIGN_SIZE+0xf283 rsp 0xffff800021d95260 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=377277 stat=onproc flags process=0 proc=4000000 pri=79, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab13d8,0xffffffff8265bb30 process=0xffff800020adc380 user=0xffff800021d90000, vmspace=0xfffffd807f00b8a0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 83233 401923 59504 0 2 0 syz-executor.1 *83233 377277 59504 0 7 0x4000000 syz-executor.1 75969 395115 97933 0 7 0 syz-executor.0 75969 197235 97933 0 2 0x4000000 syz-executor.0 59504 176397 89046 0 3 0x82 nanosleep syz-executor.1 97933 308481 89046 0 3 0x82 nanosleep syz-executor.0 87398 522572 1 0 3 0x100083 ttyin getty 3192 442482 0 0 3 0x14200 bored sosplice 89046 348363 58068 0 3 0x82 thrsleep syz-fuzzer 89046 311174 58068 0 3 0x4000082 nanosleep syz-fuzzer 89046 276994 58068 0 3 0x4000082 thrsleep syz-fuzzer 89046 188895 58068 0 3 0x4000082 thrsleep syz-fuzzer 89046 510228 58068 0 3 0x4000082 kqread syz-fuzzer 89046 25046 58068 0 3 0x4000082 thrsleep syz-fuzzer 89046 173812 58068 0 3 0x4000082 thrsleep syz-fuzzer 89046 478888 58068 0 3 0x4000082 thrsleep syz-fuzzer 89046 487315 58068 0 3 0x4000082 thrsleep syz-fuzzer 89046 291443 58068 0 3 0x4000082 thrsleep syz-fuzzer 58068 460720 67377 0 3 0x10008a pause ksh 67377 182386 60186 0 3 0x92 select sshd 60186 97694 1 0 3 0x80 select sshd 3736 436344 20792 74 3 0x100092 bpf pflogd 20792 254540 1 0 3 0x80 netio pflogd 28270 251887 6737 73 3 0x100090 kqread syslogd 6737 213795 1 0 3 0x100082 netio syslogd 13810 298662 1 77 3 0x100090 poll dhclient 53814 368487 1 0 3 0x80 poll dhclient 71642 347732 0 0 2 0x14200 zerothread 7054 215997 0 0 3 0x14200 aiodoned aiodoned 97495 199785 0 0 3 0x14200 syncer update 13825 358354 0 0 3 0x14200 cleaner cleaner 15956 315680 0 0 3 0x14200 reaper reaper 75758 501481 0 0 3 0x14200 pgdaemon pagedaemon 46135 111751 0 0 3 0x14200 bored crynlk 69887 91783 0 0 3 0x14200 bored crypto 15634 401292 0 0 3 0x40014200 acpi0 acpi0 64930 394074 0 0 3 0x40014200 idle1 19844 318643 0 0 3 0x14200 bored softnet 33411 164005 0 0 3 0x14200 bored systqmp 71181 3410 0 0 3 0x14200 bored systq 74374 399738 0 0 3 0x40014200 bored softclock 58052 393218 0 0 3 0x40014200 idle0 81434 363594 0 0 3 0x14200 bored smr 1 235928 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 83233 (syz-executor.1) thread 0xffff800020ab0018 (377277) exclusive rwlock netlock r = 0 (0xffffffff82478e48) #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 (0xffffffff8263e9d8) #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 9565 6547K 7190K 78643K 12288 0 0 pcb 13 8K 8K 78643K 177 0 0 rtable 94 4K 4K 78643K 634 0 0 ifaddr 71 15K 15K 78643K 197 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1508 0 0 iov 0 0K 16K 78643K 100 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1216 76K 77K 78643K 1867 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 5 0 0 VM map 2 1K 1K 78643K 10 0 0 sem 12 0K 0K 78643K 160 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 6 17K 25K 78643K 567 0 0 sigio 0 0K 0K 78643K 4 0 0 proc 61 63K 95K 78643K 650 0 0 subproc 32 2K 2K 78643K 102 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 83 0 0 in_multi 23 1K 2K 78643K 101 0 0 ether_multi 1 0K 0K 78643K 7 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 96 424K 424K 78643K 96 0 0 exec 0 0K 1K 78643K 293 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 120 22K 26K 78643K 3143 0 0 UVM aobj 37 2K 2K 78643K 37 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 112 0 0 NDP 16 0K 0K 78643K 58 0 0 temp 199 3560K 3629K 78643K 14103 0 0 kqueue 0 0K 0K 78643K 3 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 19 0 15 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 63 0 61 1 0 1 1 0 8 0 rtentry 112 106 0 72 2 0 2 2 0 8 0 unpcb 120 320 0 310 1 0 1 1 0 8 0 syncache 264 7 0 7 2 2 0 1 0 8 0 tcpqe 32 70 0 70 2 2 0 1 0 8 0 tcpcb 544 495 0 491 2 1 1 2 0 8 0 inpcb 280 1897 0 1884 13 10 3 9 0 8 2 nd6 48 12 0 10 2 1 1 1 0 8 0 ppxss 1128 22 0 22 5 4 1 1 0 8 1 pffrag 232 17 0 17 4 3 1 1 0 482 1 pffrnode 88 17 0 17 4 3 1 1 0 8 1 pffrent 40 563 0 563 4 3 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 65 0 33 1 0 1 1 0 8 0 pfstkey 112 65 0 33 2 0 2 2 0 8 0 pfstate 328 65 0 33 4 0 4 4 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 7 0 6 5 3 2 3 0 8 1 art_heap4 256 462 0 290 17 4 13 14 0 8 2 art_table 32 469 0 296 2 0 2 2 0 8 0 art_node 16 105 0 74 1 0 1 1 0 8 0 sysvmsgpl 40 48 0 30 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 154 0 144 1 0 1 1 0 8 0 shmpl 112 35 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2307 0 906 46 0 46 46 0 8 0 ffsino 272 2307 0 906 94 0 94 94 0 8 0 nchpl 144 3266 0 1662 61 0 61 61 0 8 0 uvmvnodes 72 2775 0 0 51 0 51 51 0 8 0 vnodes 208 2775 0 0 147 0 147 147 0 8 0 namei 1024 11529 0 11529 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vmpool 552 8 0 8 3 3 0 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 9294 0 9294 10 9 1 7 0 8 1 plimitpl 152 55 0 47 1 0 1 1 0 8 0 sigapl 432 756 0 740 3 1 2 3 0 8 0 futexpl 56 14727 0 14727 1 0 1 1 0 8 1 knotepl 112 270 0 251 3 2 1 3 0 8 0 kqueuepl 104 151 0 149 1 0 1 1 0 8 0 pipepl 112 440 0 421 1 0 1 1 0 8 0 fdescpl 488 757 0 740 3 0 3 3 0 8 0 filepl 152 7612 0 7504 15 9 6 11 0 8 1 lockfpl 104 207 0 206 1 0 1 1 0 8 0 lockfspl 48 70 0 69 1 0 1 1 0 8 0 sessionpl 112 23 0 12 1 0 1 1 0 8 0 pgrppl 48 24 0 13 1 0 1 1 0 8 0 ucredpl 96 1945 0 1936 1 0 1 1 0 8 0 zombiepl 144 740 0 740 1 0 1 1 0 8 1 processpl 896 773 0 740 4 0 4 4 0 8 0 procpl 632 2169 0 2125 5 0 5 5 0 8 1 srpgc 64 6 0 6 3 2 1 1 0 8 1 sosppl 128 246 0 243 2 1 1 1 0 8 0 sockpl 384 2315 0 2290 22 15 7 15 0 8 4 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 8 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 174 0 0 21 0 21 21 0 8 0 mtagpl 80 23 0 0 1 0 1 1 0 8 0 mbufpl 256 393 0 0 21 0 21 21 0 8 0 bufpl 256 7416 0 1318 382 0 382 382 0 8 0 anonpl 16 110112 0 94806 107 20 87 93 0 124 9 amapchunkpl 152 5796 0 5654 21 13 8 14 0 158 0 amappl16 192 4099 0 3066 75 21 54 63 0 8 2 amappl15 184 8 0 8 1 1 0 1 0 8 0 amappl14 176 67 0 64 1 0 1 1 0 8 0 amappl13 168 1 0 1 1 1 0 1 0 8 0 amappl12 160 20 0 16 1 0 1 1 0 8 0 amappl11 152 298 0 283 1 0 1 1 0 8 0 amappl10 144 140 0 136 1 0 1 1 0 8 0 amappl9 136 809 0 798 1 0 1 1 0 8 0 amappl8 128 365 0 327 2 0 2 2 0 8 0 amappl7 120 182 0 176 1 0 1 1 0 8 0 amappl6 112 282 0 271 1 0 1 1 0 8 0 amappl5 104 168 0 151 1 0 1 1 0 8 0 amappl4 96 1027 0 992 2 1 1 2 0 8 0 amappl3 88 129 0 123 1 0 1 1 0 8 0 amappl2 80 4883 0 4801 3 1 2 3 0 8 0 amappl1 72 27528 0 27078 26 16 10 20 0 8 0 amappl 80 2501 0 2449 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 36 0 0 1 0 1 1 0 8 0 uaddrrnd 24 765 0 740 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 765 0 740 1 0 1 1 0 8 0 vmmpekpl 168 10910 0 10879 2 0 2 2 0 8 0 vmmpepl 168 104200 0 101898 196 59 137 170 0 357 36 vmsppl 368 756 0 740 2 0 2 2 0 8 0 pdppl 4096 1537 0 1496 6 0 6 6 0 8 0 pvpl 32 306633 0 288047 238 24 214 221 0 265 32 pmappl 232 764 0 748 6 5 1 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 562 0 11 16 0 16 16 0 8 0