uvm_fault(0xffffffff82620600, 0xffff800000b1b074, 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(0xffffffff82620600, 0xffff800000b1b074, 0, 1) -> e rtable_satoplen(2,ffff800000b1af78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff800023b813d0, count: 0 ddb{0}> trace rtable_satoplen(2,ffff800000b1af78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(18,fffffd8070078f20,ffff800000b1af78,ffff800000b1af58,4) at rtable_lookup+0xeb sys/net/rtable.c:391 rtrequest_delete(ffff800023b81470,4,ffff800000b01000,ffff800023b81540,18) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000b1af00,800100,ffff800000b1af58,18) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_purgeaddr(ffff800000b1af00) at in_purgeaddr+0xc6 in_remove_prefix sys/netinet/in.c:738 [inline] in_purgeaddr(ffff800000b1af00) at in_purgeaddr+0xc6 in_ifscrub sys/netinet/in.c:562 [inline] in_purgeaddr(ffff800000b1af00) at in_purgeaddr+0xc6 sys/netinet/in.c:678 in_ifinit(ffff800000b01000,ffff800000b1af00,ffff800023b818c0,1) at in_ifinit+0x234 sys/netinet/in.c:664 in_ioctl_change_ifaddr(8040691a,ffff800023b818b0,ffff800000b01000,1) at in_ioctl_change_ifaddr+0x5de sys/netinet/in.c:452 in_ioctl(8040691a,ffff800023b818b0,ffff800000b01000,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd8065621d98,8040691a,ffff800023b818b0,ffff800020acf8d0) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020acf8d0,ffff800023b819c8,ffff800023b81a10) at sys_ioctl+0x5b9 syscall(ffff800023b81a90) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800023b81a90) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,a0050d59010) at Xsyscall+0x128 end of kernel end trace frame: 0xa02cdeb4950, count: -12 ddb{0}> show registers rdi 0 rsi 0xfd rbp 0xffff800023b81330 rbx 0xffffffffffffff07 rdx 0xffff800000b1af7c rcx 0xffff800000b1b075 rax 0xffff800000b1b075 r8 0x4 r9 0x5 r10 0xec5f312a3057c533 r11 0xc3ab00453f4362df r12 0 r13 0xffff800000b1b075 r14 0xffffffff824685c0 inetdomain r15 0x4 rip 0xffffffff816e4d60 rtable_satoplen+0x150 cs 0x8 rflags 0x10283 __ALIGN_SIZE+0xf283 rsp 0xffff800023b812e0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.1) pid=411299 stat=onproc flags process=0 proc=4000000 pri=79, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800020acea00,0xffffffff826716a0 process=0xffff800020a8a710 user=0xffff800023b7c000, vmspace=0xfffffd807f00a730 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 98375 315935 32150 0 2 0 syz-executor.1 *98375 411299 32150 0 7 0x4000000 syz-executor.1 32150 35671 68738 0 3 0x82 nanosleep syz-executor.1 35754 141468 0 0 3 0x14200 acct acct 88425 272554 68738 0 7 0x482 syz-executor.0 91705 43779 1 0 3 0x100083 ttyin getty 44935 132508 0 0 3 0x14200 bored sosplice 68738 306064 85642 0 3 0x82 thrsleep syz-fuzzer 68738 112251 85642 0 2 0x4000482 syz-fuzzer 68738 448621 85642 0 3 0x4000082 thrsleep syz-fuzzer 68738 284747 85642 0 3 0x4000082 thrsleep syz-fuzzer 68738 386760 85642 0 3 0x4000082 nanosleep syz-fuzzer 68738 194494 85642 0 3 0x4000082 thrsleep syz-fuzzer 68738 138211 85642 0 3 0x4000082 thrsleep syz-fuzzer 68738 494359 85642 0 3 0x4000082 thrsleep syz-fuzzer 68738 266364 85642 0 3 0x4000082 kqread syz-fuzzer 68738 51892 85642 0 3 0x4000082 thrsleep syz-fuzzer 85642 346673 72818 0 3 0x10008a pause ksh 72818 274745 5438 0 3 0x92 select sshd 5438 186469 1 0 3 0x80 select sshd 42091 508591 59202 74 3 0x100092 bpf pflogd 59202 343715 1 0 3 0x80 netio pflogd 24297 91268 45901 73 3 0x100090 kqread syslogd 45901 60377 1 0 3 0x100082 netio syslogd 3320 139957 1 77 3 0x100090 poll dhclient 27150 312440 1 0 3 0x80 poll dhclient 99459 146231 0 0 3 0x14200 pgzero zerothread 93451 518218 0 0 3 0x14200 aiodoned aiodoned 64245 404221 0 0 3 0x14200 syncer update 69610 290561 0 0 3 0x14200 cleaner cleaner 23566 399343 0 0 3 0x14200 reaper reaper 79860 472853 0 0 3 0x14200 pgdaemon pagedaemon 77123 288951 0 0 3 0x14200 bored crynlk 12124 210021 0 0 3 0x14200 bored crypto 73009 411097 0 0 3 0x40014200 acpi0 acpi0 33002 36231 0 0 3 0x40014200 idle1 62551 300240 0 0 3 0x14200 bored softnet 96110 19267 0 0 3 0x14200 bored systqmp 41834 28934 0 0 3 0x14200 bored systq 68663 126841 0 0 3 0x40014200 bored softclock 81013 148482 0 0 3 0x40014200 idle0 29706 145623 0 0 3 0x14200 bored smr 1 319722 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 98375 (syz-executor.1) thread 0xffff800020acf8d0 (411299) exclusive rwlock netlock r = 0 (0xffffffff824ca238) #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 (0xffffffff82625ee0) #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 9632 6665K 7586K 78643K 18410 0 0 pcb 13 8K 9K 78643K 496 0 0 rtable 105 5K 6K 78643K 2075 0 0 ifaddr 96 21K 23K 78643K 630 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1599 0 0 iov 0 0K 28K 78643K 7280 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1233 77K 78K 78643K 3912 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 33 0 0 VM map 20 10K 10K 78643K 25 0 0 sem 12 0K 1K 78643K 1972 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 3162 0 0 sigio 0 0K 1K 78643K 574 0 0 proc 62 63K 95K 78643K 2091 0 0 subproc 32 2K 2K 78643K 425 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 1648 0 0 in_multi 30 2K 2K 78643K 407 0 0 ether_multi 1 0K 0K 78643K 32 0 0 mrt 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 96 424K 424K 78643K 96 0 0 exec 0 0K 1K 78643K 810 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 153 161K 166K 78643K 11425 0 0 UVM aobj 130 8K 8K 78643K 134 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 492 0 0 NDP 23 0K 1K 78643K 200 0 0 temp 250 3565K 4205K 78643K 198359 0 0 kqueue 0 0K 0K 78643K 21 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 68 0 61 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 263 0 261 1 0 1 1 0 8 0 rtentry 112 360 0 321 2 0 2 2 0 8 0 unpcb 120 2664 0 2650 9 8 1 3 0 8 0 syncache 264 15 0 15 7 6 1 1 0 8 1 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 544 2822 0 2818 11 10 1 2 0 8 0 inpcb 280 6349 0 6339 16 13 3 5 0 8 1 rttmr 72 3 0 3 2 1 1 1 0 8 1 ip6q 72 1 0 1 1 0 1 1 0 8 1 nd6 48 60 0 58 1 0 1 1 0 8 0 pkpcb 40 6 0 6 3 2 1 1 0 8 1 ppxss 1128 84 0 84 10 9 1 1 0 8 1 pffrag 232 69 0 69 9 8 1 1 0 482 1 pffrnode 88 69 0 69 9 8 1 1 0 8 1 pffrent 40 1623 0 1623 9 8 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 24 224 0 174 1 0 1 1 0 8 0 pfstkey 112 225 0 175 2 0 2 2 0 8 0 pfstate 328 225 0 175 6 1 5 6 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 7 0 5 3 0 3 3 0 8 1 art_heap4 256 1651 0 1451 31 15 16 17 0 8 0 art_table 32 1658 0 1456 3 0 3 3 0 8 0 art_node 16 359 0 322 1 0 1 1 0 8 0 sysvmsgpl 40 34 0 19 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 1970 0 1960 1 0 1 1 0 8 0 shmpl 112 132 0 4 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 7016 0 5606 46 0 46 46 0 8 0 ffsino 272 7016 0 5606 95 0 95 95 0 8 0 nchpl 144 13213 0 12743 61 39 22 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 42172 0 42172 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 18 0 0 3 0 3 3 0 8 0 vmpool 552 23 0 5 2 0 2 2 0 8 0 scsiplug 64 7 0 7 4 4 0 1 0 8 0 scxspl 192 51580 0 51580 31 29 2 7 0 8 2 plimitpl 152 244 0 236 1 0 1 1 0 8 0 sigapl 432 3294 0 3279 4 2 2 3 0 8 0 futexpl 56 82892 0 82892 1 0 1 1 0 8 1 knotepl 112 877 0 858 3 2 1 2 0 8 0 kqueuepl 104 1353 0 1351 1 0 1 1 0 8 0 pipepl 112 4528 0 4509 16 14 2 3 0 8 1 fdescpl 488 3295 0 3279 3 0 3 3 0 8 0 filepl 152 33091 0 32990 33 26 7 12 0 8 2 lockfpl 104 775 0 774 1 0 1 1 0 8 0 lockfspl 48 255 0 254 1 0 1 1 0 8 0 sessionpl 112 42 0 31 1 0 1 1 0 8 0 pgrppl 48 58 0 47 1 0 1 1 0 8 0 ucredpl 96 2555 0 2546 1 0 1 1 0 8 0 zombiepl 144 3280 0 3279 1 0 1 1 0 8 0 processpl 896 3313 0 3279 5 1 4 5 0 8 0 procpl 632 9505 0 9461 5 0 5 5 0 8 0 srpgc 64 36 0 36 10 9 1 1 0 8 1 sosppl 128 657 0 657 2 1 1 1 0 8 1 sockpl 384 9321 0 9297 41 35 6 15 0 8 3 mcl64k 65536 26 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 18 0 0 2 0 2 2 0 8 0 mcl9k 9216 14 0 0 1 0 1 1 0 8 0 mcl8k 8192 25 0 0 4 1 3 3 0 8 0 mcl4k 4096 25 0 0 4 1 3 3 0 8 0 mcl2k2 2112 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 172 0 0 20 2 18 20 0 8 0 mtagpl 80 175 0 0 2 0 2 2 0 8 0 mbufpl 256 600 0 0 36 0 36 36 0 8 0 bufpl 256 20199 0 13151 441 0 441 441 0 8 0 anonpl 16 418094 0 399626 157 62 95 95 0 124 14 amapchunkpl 152 23053 0 22927 66 56 10 20 0 158 3 amappl16 192 17640 0 16549 145 82 63 67 0 8 8 amappl15 184 194 0 192 1 0 1 1 0 8 0 amappl14 176 868 0 865 1 0 1 1 0 8 0 amappl13 168 199 0 199 3 3 0 1 0 8 0 amappl12 160 555 0 554 5 4 1 1 0 8 0 amappl11 152 312 0 296 1 0 1 1 0 8 0 amappl10 144 485 0 478 1 0 1 1 0 8 0 amappl9 136 1569 0 1562 1 0 1 1 0 8 0 amappl8 128 1107 0 1063 2 0 2 2 0 8 0 amappl7 120 584 0 573 1 0 1 1 0 8 0 amappl6 112 264 0 252 1 0 1 1 0 8 0 amappl5 104 1549 0 1535 1 0 1 1 0 8 0 amappl4 96 3823 0 3794 1 0 1 1 0 8 0 amappl3 88 1351 0 1345 1 0 1 1 0 8 0 amappl2 80 24181 0 24108 3 1 2 3 0 8 0 amappl1 72 80593 0 80156 26 16 10 20 0 8 0 amappl 80 10165 0 10114 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 64 133 0 4 3 0 3 3 0 8 0 uaddrrnd 24 3318 0 3279 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3318 0 3279 1 0 1 1 0 8 0 vmmpekpl 168 34908 0 34868 3 0 3 3 0 8 0 vmmpepl 168 429672 0 427401 243 102 141 146 0 357 33 vmsppl 368 3294 0 3279 2 0 2 2 0 8 0 pdppl 4096 6643 0 6586 9 1 8 8 0 8 0 pvpl 32 1126468 0 1105269 327 108 219 219 0 265 37 pmappl 232 3317 0 3284 3 0 3 3 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 671 0 34 19 0 19 19 0 8 0