uvm_fault(0xffffffff82620718, 0xffff800000af2074, 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, 0xffff800000af2074, 0, 1) -> e rtable_satoplen(2,ffff800000af1f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff800023bcce90, count: 0 ddb{1}> trace rtable_satoplen(2,ffff800000af1f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(6,fffffd806258b320,ffff800000af1f78,ffff800000af1f58,4) at rtable_lookup+0xeb sys/net/rtable.c:391 rtrequest_delete(ffff800023bccf30,4,ffff800000a98800,ffff800023bcd000,6) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000af1f00,800100,ffff800000af1f58,6) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_purgeaddr(ffff800000af1f00) at in_purgeaddr+0xc6 in_remove_prefix sys/netinet/in.c:738 [inline] in_purgeaddr(ffff800000af1f00) at in_purgeaddr+0xc6 in_ifscrub sys/netinet/in.c:562 [inline] in_purgeaddr(ffff800000af1f00) at in_purgeaddr+0xc6 sys/netinet/in.c:678 in_ifinit(ffff800000a98800,ffff800000af1f00,ffff800023bcd380,1) at in_ifinit+0x234 sys/netinet/in.c:664 in_ioctl_change_ifaddr(8040691a,ffff800023bcd370,ffff800000a98800,1) at in_ioctl_change_ifaddr+0x5de sys/netinet/in.c:452 in_ioctl(8040691a,ffff800023bcd370,ffff800000a98800,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd80632b14c8,8040691a,ffff800023bcd370,ffff800020ace788) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020ace788,ffff800023bcd488,ffff800023bcd4d0) at sys_ioctl+0x5b9 syscall(ffff800023bcd550) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800023bcd550) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,6beda297010) at Xsyscall+0x128 end of kernel end trace frame: 0x6c1126135e0, count: -12 ddb{1}> show registers rdi 0 rsi 0xfd rbp 0xffff800023bccdf0 rbx 0xffffffffffffff07 rdx 0xffff800000af1f7c rcx 0xffff800000af2075 rax 0xffff800000af2075 r8 0x4 r9 0x5 r10 0xfe58823b4f987254 r11 0x88cee717a45b9fa9 r12 0 r13 0xffff800000af2075 r14 0xffffffff824cfef0 inetdomain r15 0x4 rip 0xffffffff8102c080 rtable_satoplen+0x150 cs 0x8 rflags 0x10283 __ALIGN_SIZE+0xf283 rsp 0xffff800023bccda0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=304079 stat=onproc flags process=0 proc=4000000 pri=76, usrpri=76, nice=20 forw=0xffffffffffffffff, list=0xffff800020ace020,0xffffffff8265bb30 process=0xffff800020adca80 user=0xffff800023bc8000, vmspace=0xfffffd807f00b450 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 83554 306222 23823 0 7 0 syz-executor.1 *83554 304079 23823 0 7 0x4000000 syz-executor.1 90828 354570 10153 0 3 0x82 nanosleep syz-executor.0 9885 37155 0 0 3 0x14200 acct acct 55146 496493 0 0 3 0x14200 bored sosplice 23823 78725 10153 0 3 0x82 nanosleep syz-executor.1 10153 109191 18578 0 3 0x82 thrsleep syz-fuzzer 10153 46979 18578 0 3 0x4000082 nanosleep syz-fuzzer 10153 125852 18578 0 3 0x4000082 thrsleep syz-fuzzer 10153 430738 18578 0 3 0x4000082 nanosleep syz-fuzzer 10153 360110 18578 0 3 0x4000082 thrsleep syz-fuzzer 10153 507494 18578 0 3 0x4000082 thrsleep syz-fuzzer 10153 478599 18578 0 3 0x4000082 thrsleep syz-fuzzer 10153 358516 18578 0 3 0x4000082 thrsleep syz-fuzzer 10153 517200 18578 0 3 0x4000082 thrsleep syz-fuzzer 10153 98810 18578 0 3 0x4000082 kqread syz-fuzzer 18578 35669 74607 0 3 0x10008a pause ksh 74607 376894 93347 0 3 0x92 select sshd 11216 507686 1 0 3 0x100083 ttyin getty 93347 274321 1 0 3 0x80 select sshd 69236 111240 74909 74 3 0x100092 bpf pflogd 74909 211731 1 0 3 0x80 netio pflogd 70134 27817 90842 73 3 0x100090 kqread syslogd 90842 279345 1 0 3 0x100082 netio syslogd 89952 439109 1 77 3 0x100090 poll dhclient 15151 342956 1 0 3 0x80 poll dhclient 91494 441102 0 0 3 0x14200 pgzero zerothread 35085 78285 0 0 3 0x14200 aiodoned aiodoned 42277 334518 0 0 3 0x14200 syncer update 68461 218289 0 0 3 0x14200 cleaner cleaner 70157 488374 0 0 3 0x14200 reaper reaper 95182 140691 0 0 3 0x14200 pgdaemon pagedaemon 3086 219289 0 0 3 0x14200 bored crynlk 29347 336733 0 0 3 0x14200 bored crypto 26565 447987 0 0 3 0x40014200 acpi0 acpi0 59414 314692 0 0 3 0x40014200 idle1 27182 488884 0 0 3 0x14200 bored softnet 53575 450961 0 0 3 0x14200 bored systqmp 66164 402577 0 0 3 0x14200 bored systq 7362 275350 0 0 3 0x40014200 bored softclock 33809 72187 0 0 3 0x40014200 idle0 18022 27995 0 0 3 0x14200 bored smr 1 317773 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 83554 (syz-executor.1) thread 0xffff800020ace788 (304079) 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 9555 6416K 7047K 78643K 11865 0 0 pcb 13 8K 8K 78643K 168 0 0 rtable 91 4K 4K 78643K 573 0 0 ifaddr 73 15K 15K 78643K 167 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1497 0 0 iov 0 0K 16K 78643K 74 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1217 76K 77K 78643K 1644 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 57 0 0 VM map 4 2K 2K 78643K 6 0 0 sem 12 0K 0K 78643K 198 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 593 0 0 sigio 0 0K 0K 78643K 10 0 0 proc 61 63K 83K 78643K 546 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 49 0 0 in_multi 22 1K 2K 78643K 75 0 0 ether_multi 1 0K 0K 78643K 7 0 0 mrt 2 0K 0K 78643K 11 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 267 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 115 38K 47K 78643K 3290 0 0 UVM aobj 89 3K 3K 78643K 89 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 117 0 0 NDP 17 0K 0K 78643K 48 0 0 temp 207 3564K 3630K 78643K 19049 0 0 kqueue 0 0K 0K 78643K 1 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 70 0 68 1 0 1 1 0 8 0 rtentry 112 103 0 69 2 0 2 2 0 8 0 unpcb 120 281 0 269 2 1 1 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 41 0 41 1 1 0 1 0 8 0 tcpcb 544 178 0 174 1 0 1 1 0 8 0 inpcb 280 784 0 776 4 3 1 2 0 8 0 rttmr 72 4 0 4 4 4 0 1 0 8 0 nd6 48 10 0 8 2 1 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 ppxss 1128 15 0 15 3 3 0 1 0 8 0 pffrag 232 15 0 15 6 6 0 1 0 482 0 pffrnode 88 15 0 15 6 6 0 1 0 8 0 pffrent 40 507 0 507 6 6 0 1 0 8 0 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 40 0 28 1 0 1 1 0 8 0 pfstkey 112 40 0 28 1 0 1 1 0 8 0 pfstate 328 40 0 28 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 3 0 2 2 1 1 2 0 8 0 art_heap4 256 387 0 215 14 3 11 14 0 8 0 art_table 32 390 0 217 2 0 2 2 0 8 0 art_node 16 102 0 71 1 0 1 1 0 8 0 sysvmsgpl 40 57 0 45 1 0 1 1 0 8 0 semapl 112 196 0 186 1 0 1 1 0 8 0 shmpl 112 87 0 0 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2283 0 880 46 0 46 46 0 8 0 ffsino 272 2283 0 880 95 0 95 95 0 8 0 nchpl 144 3481 0 1884 61 0 61 61 0 8 0 uvmvnodes 72 2627 0 0 48 0 48 48 0 8 0 vnodes 208 2627 0 0 139 0 139 139 0 8 0 namei 1024 9933 0 9933 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 552 4 0 2 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 9547 0 9547 8 7 1 7 0 8 1 plimitpl 152 56 0 48 1 0 1 1 0 8 0 sigapl 432 787 0 772 3 1 2 3 0 8 0 futexpl 56 10996 0 10996 1 0 1 1 0 8 1 knotepl 112 197 0 178 2 1 1 2 0 8 0 kqueuepl 104 165 0 163 2 1 1 2 0 8 0 pipepl 112 1456 0 1435 6 5 1 2 0 8 0 fdescpl 488 788 0 772 3 0 3 3 0 8 0 filepl 152 6049 0 5946 11 6 5 7 0 8 1 lockfpl 104 160 0 159 1 0 1 1 0 8 0 lockfspl 48 58 0 57 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 29 0 18 1 0 1 1 0 8 0 ucredpl 96 468 0 459 1 0 1 1 0 8 0 zombiepl 144 772 0 771 1 0 1 1 0 8 0 processpl 896 805 0 771 4 0 4 4 0 8 0 procpl 632 2400 0 2356 5 0 5 5 0 8 0 srpgc 64 4 0 4 2 2 0 1 0 8 0 sosppl 128 7 0 7 1 1 0 1 0 8 0 sockpl 384 1145 0 1123 10 7 3 8 0 8 0 mcl64k 65536 16 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 164 0 0 20 0 20 20 0 8 0 mtagpl 80 33 0 0 1 0 1 1 0 8 0 mbufpl 256 417 0 0 24 0 24 24 0 8 1 bufpl 256 7512 0 1315 388 0 388 388 0 8 0 anonpl 16 95454 0 78248 87 10 77 83 0 124 0 amapchunkpl 152 5378 0 5264 16 10 6 11 0 158 0 amappl16 192 3776 0 2724 67 14 53 61 0 8 0 amappl15 184 3 0 2 1 0 1 1 0 8 0 amappl14 176 237 0 234 1 0 1 1 0 8 0 amappl13 168 40 0 39 2 1 1 1 0 8 0 amappl12 160 5 0 5 1 1 0 1 0 8 0 amappl11 152 63 0 48 1 0 1 1 0 8 0 amappl10 144 13 0 7 1 0 1 1 0 8 0 amappl9 136 986 0 976 1 0 1 1 0 8 0 amappl8 128 543 0 506 2 0 2 2 0 8 0 amappl7 120 47 0 42 1 0 1 1 0 8 0 amappl6 112 76 0 64 1 0 1 1 0 8 0 amappl5 104 149 0 135 1 0 1 1 0 8 0 amappl4 96 892 0 862 1 0 1 1 0 8 0 amappl3 88 452 0 447 1 0 1 1 0 8 0 amappl2 80 5262 0 5187 3 1 2 3 0 8 0 amappl1 72 27886 0 27451 25 15 10 20 0 8 0 amappl 80 2689 0 2648 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 88 0 0 2 0 2 2 0 8 0 uaddrrnd 24 792 0 772 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 792 0 772 1 0 1 1 0 8 0 vmmpekpl 168 13646 0 13611 3 0 3 3 0 8 0 vmmpepl 168 105822 0 103621 184 66 118 140 0 357 16 vmsppl 368 787 0 772 2 0 2 2 0 8 0 pdppl 4096 1591 0 1550 6 0 6 6 0 8 0 pvpl 32 291610 0 271205 208 29 179 198 0 265 0 pmappl 232 791 0 774 3 1 2 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 565 0 7 16 0 16 16 0 8 0