uvm_fault(0xffffffff82542810, 0xffff800000b6f074, 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(0xffffffff82542810, 0xffff800000b6f074, 0, 1) -> e rtable_satoplen(2,ffff800000b6ef78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff800022b87150, count: 0 ddb{1}> trace rtable_satoplen(2,ffff800000b6ef78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(3,fffffd80613ef620,ffff800000b6ef78,ffff800000b6ef58,4) at rtable_lookup+0xeb sys/net/rtable.c:391 rtrequest_delete(ffff800022b871f0,4,ffff800000b27800,ffff800022b872c0,3) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000b6ef00,800100,ffff800000b6ef58,3) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_purgeaddr(ffff800000b6ef00) at in_purgeaddr+0xc6 in_remove_prefix sys/netinet/in.c:738 [inline] in_purgeaddr(ffff800000b6ef00) at in_purgeaddr+0xc6 in_ifscrub sys/netinet/in.c:562 [inline] in_purgeaddr(ffff800000b6ef00) at in_purgeaddr+0xc6 sys/netinet/in.c:678 in_ifinit(ffff800000b27800,ffff800000b6ef00,ffff800022b87640,1) at in_ifinit+0x234 sys/netinet/in.c:664 in_ioctl_change_ifaddr(8040691a,ffff800022b87630,ffff800000b27800,1) at in_ioctl_change_ifaddr+0x5de sys/netinet/in.c:452 in_ioctl(8040691a,ffff800022b87630,ffff800000b27800,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd80665a0af8,8040691a,ffff800022b87630,ffff800020acfb58) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020acfb58,ffff800022b87748,ffff800022b87790) at sys_ioctl+0x5b9 syscall(ffff800022b87810) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800022b87810) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,dcecc88d0e0) at Xsyscall+0x128 end of kernel end trace frame: 0xdd0ff3f7c40, count: -12 ddb{1}> show registers rdi 0 rsi 0xfd rbp 0xffff800022b870b0 rbx 0xffffffffffffff07 rdx 0xffff800000b6ef7c rcx 0xffff800000b6f075 rax 0xffff800000b6f075 r8 0x4 r9 0x5 r10 0xc1bf872fc927ce92 r11 0xe6f5f968594e402f r12 0 r13 0xffff800000b6f075 r14 0xffffffff8248f8d0 inetdomain r15 0x4 rip 0xffffffff820e2620 rtable_satoplen+0x150 cs 0x8 rflags 0x10283 __ALIGN_SIZE+0xf283 rsp 0xffff800022b87060 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.0) pid=76707 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020ace798,0xffff800020acf400 process=0xffff800020adc380 user=0xffff800022b82000, 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 68471 467956 86805 0 7 0 syz-executor.1 68471 102816 86805 0 2 0x4000080 syz-executor.1 16028 459558 65409 0 2 0 syz-executor.0 16028 18667 65409 0 2 0x4000000 syz-executor.0 *16028 76707 65409 0 7 0x4000000 syz-executor.0 65409 220459 38522 0 3 0x82 nanosleep syz-executor.0 86805 361428 38522 0 3 0x82 nanosleep syz-executor.1 97896 352539 0 0 3 0x14200 acct acct 82620 426337 1 0 3 0x100083 ttyin getty 70172 482834 0 0 3 0x14200 bored sosplice 38522 504567 11897 0 3 0x82 thrsleep syz-fuzzer 38522 362815 11897 0 3 0x4000082 thrsleep syz-fuzzer 38522 144722 11897 0 3 0x4000082 thrsleep syz-fuzzer 38522 185535 11897 0 3 0x4000082 thrsleep syz-fuzzer 38522 169862 11897 0 3 0x4000082 thrsleep syz-fuzzer 38522 238450 11897 0 3 0x4000082 thrsleep syz-fuzzer 38522 4373 11897 0 3 0x4000082 thrsleep syz-fuzzer 38522 172996 11897 0 3 0x4000082 thrsleep syz-fuzzer 38522 166658 11897 0 3 0x4000082 thrsleep syz-fuzzer 38522 504036 11897 0 3 0x4000082 kqread syz-fuzzer 11897 286853 81157 0 3 0x10008a pause ksh 81157 290028 33537 0 3 0x92 select sshd 33537 140830 1 0 3 0x80 select sshd 6957 481889 60616 74 3 0x100092 bpf pflogd 60616 454551 1 0 3 0x80 netio pflogd 70955 82275 41127 73 3 0x100090 kqread syslogd 41127 302332 1 0 3 0x100082 netio syslogd 61598 487619 1 77 3 0x100090 poll dhclient 40790 437516 1 0 3 0x80 poll dhclient 52199 473974 0 0 2 0x14200 zerothread 19103 75643 0 0 3 0x14200 aiodoned aiodoned 69412 138192 0 0 3 0x14200 syncer update 22130 200352 0 0 3 0x14200 cleaner cleaner 46709 199124 0 0 3 0x14200 reaper reaper 97686 484492 0 0 3 0x14200 pgdaemon pagedaemon 21902 158340 0 0 3 0x14200 bored crynlk 92829 389917 0 0 3 0x14200 bored crypto 50553 151976 0 0 3 0x40014200 acpi0 acpi0 6483 300462 0 0 3 0x40014200 idle1 10289 453407 0 0 3 0x14200 bored softnet 5690 80485 0 0 3 0x14200 bored systqmp 10378 462398 0 0 3 0x14200 bored systq 67237 94545 0 0 3 0x40014200 bored softclock 4507 166905 0 0 3 0x40014200 idle0 64150 267136 0 0 3 0x14200 bored smr 1 457077 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 16028 (syz-executor.0) thread 0xffff800020acfb58 (76707) exclusive rwlock netlock r = 0 (0xffffffff8251b198) #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 (0xffffffff8262db68) #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 9619 6470K 8206K 78643K 21402 0 0 pcb 17 13K 15K 78643K 7805 0 0 rtable 108 13K 15K 78643K 3387 0 0 ifaddr 99 21K 23K 78643K 969 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1735 0 0 iov 0 0K 32K 78643K 828 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1227 77K 77K 78643K 5216 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 92 0 0 VM map 49 24K 24K 78643K 65 0 0 sem 12 0K 0K 78643K 938 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 6 17K 25K 78643K 4671 0 0 sigio 0 0K 0K 78643K 76 0 0 proc 62 63K 83K 78643K 2032 0 0 subproc 32 2K 2K 78643K 527 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 520 0 0 in_multi 25 1K 2K 78643K 703 0 0 ether_multi 1 0K 0K 78643K 65 0 0 mrt 3 0K 0K 78643K 32 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 72 318K 318K 78643K 72 0 0 exec 0 0K 1K 78643K 1066 0 0 pfkey data 0 0K 4K 78643K 4 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 206 383K 384K 78643K 17598 0 0 UVM aobj 130 4K 4K 78643K 138 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 4 0K 4K 78643K 6200 0 0 NDP 24 0K 1K 78643K 317 0 0 temp 258 3561K 4201K 78643K 108225 0 0 kqueue 0 0K 0K 78643K 48 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 64 114 0 109 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 1019 0 1017 1 0 1 1 0 8 0 rtentry 112 611 0 576 2 0 2 2 0 8 0 unpcb 120 2507 0 2489 7 5 2 2 0 8 1 syncache 264 20 0 20 8 7 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 7 0 7 4 3 1 1 0 8 1 tcpcb 544 1991 0 1987 27 25 2 13 0 8 1 inpcb 280 20908 0 20895 44 42 2 13 0 8 1 rttmr 72 9 0 8 1 0 1 1 0 8 0 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 48 82 0 80 2 1 1 1 0 8 0 pkpcb 40 33 0 33 9 9 0 1 0 8 0 swfcl 56 4 0 0 1 0 1 1 0 8 0 ppxss 1128 131 0 131 14 13 1 1 0 8 1 pffrag 232 126 0 126 11 10 1 1 0 482 1 pffrnode 88 126 0 126 11 10 1 1 0 8 1 pffrent 40 3488 0 3488 11 10 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 24 414 0 359 1 0 1 1 0 8 0 pfstkey 112 415 0 360 4 1 3 3 0 8 0 pfstate 328 415 0 360 7 0 7 7 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 10 0 9 7 6 1 3 0 8 0 art_heap4 256 2522 0 2324 28 12 16 17 0 8 0 art_table 32 2532 0 2333 7 4 3 3 0 8 0 art_node 16 609 0 577 1 0 1 1 0 8 0 sysvmsgpl 40 67 0 44 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 930 0 920 1 0 1 1 0 8 0 shmpl 112 136 0 8 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 8411 0 6987 48 1 47 47 0 8 0 ffsino 272 8411 0 6987 97 1 96 96 0 8 0 nchpl 144 15364 0 14897 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 54119 0 54119 4 3 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 48 0 1 6 0 6 6 0 8 0 vmpool 552 63 0 16 4 0 4 4 0 8 0 scsiplug 64 4 0 4 2 2 0 1 0 8 0 scxspl 192 50735 0 50735 45 42 3 7 0 8 3 plimitpl 152 424 0 416 1 0 1 1 0 8 0 sigapl 432 4786 0 4770 3 1 2 3 0 8 0 futexpl 56 119558 0 119558 1 0 1 1 0 8 1 knotepl 112 1259 0 1240 4 3 1 2 0 8 0 kqueuepl 104 1374 0 1372 4 3 1 4 0 8 0 pipepl 112 2834 0 2813 6 5 1 2 0 8 0 fdescpl 488 4787 0 4770 3 0 3 3 0 8 0 filepl 152 49992 0 49876 42 36 6 14 0 8 1 lockfpl 104 1548 0 1547 1 0 1 1 0 8 0 lockfspl 48 523 0 522 1 0 1 1 0 8 0 sessionpl 112 49 0 38 1 0 1 1 0 8 0 pgrppl 48 107 0 96 1 0 1 1 0 8 0 ucredpl 96 4264 0 4255 1 0 1 1 0 8 0 zombiepl 144 4771 0 4771 2 1 1 1 0 8 1 processpl 896 4805 0 4771 4 0 4 4 0 8 0 procpl 632 15256 0 15210 7 2 5 5 0 8 0 srpgc 64 38 0 38 11 10 1 1 0 8 1 sosppl 128 88 0 88 16 16 0 1 0 8 0 sockpl 384 24705 0 24672 70 64 6 22 0 8 2 mcl64k 65536 815 0 0 90 30 60 65 0 8 0 mcl16k 16384 17 0 0 3 1 2 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 21 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 203 0 0 20 7 13 20 0 8 0 mtagpl 80 67 0 0 1 0 1 1 0 8 0 mbufpl 256 1099 0 0 52 0 52 52 0 8 0 bufpl 256 20066 0 13018 441 0 441 441 0 8 0 anonpl 16 590120 0 568588 201 97 104 107 0 124 13 amapchunkpl 152 36219 0 36048 83 73 10 21 0 158 1 amappl16 192 26822 0 25589 202 131 71 75 0 8 8 amappl15 184 651 0 651 5 5 0 1 0 8 0 amappl14 176 1429 0 1426 1 0 1 1 0 8 0 amappl13 168 169 0 168 3 2 1 1 0 8 0 amappl12 160 471 0 469 1 0 1 1 0 8 0 amappl11 152 600 0 585 1 0 1 1 0 8 0 amappl10 144 298 0 292 1 0 1 1 0 8 0 amappl9 136 2142 0 2133 1 0 1 1 0 8 0 amappl8 128 1718 0 1669 2 0 2 2 0 8 0 amappl7 120 442 0 433 1 0 1 1 0 8 0 amappl6 112 542 0 528 1 0 1 1 0 8 0 amappl5 104 827 0 813 1 0 1 1 0 8 0 amappl4 96 4774 0 4743 1 0 1 1 0 8 0 amappl3 88 1708 0 1696 1 0 1 1 0 8 0 amappl2 80 36215 0 36129 3 1 2 3 0 8 0 amappl1 72 117950 0 117485 25 15 10 20 0 8 0 amappl 80 16074 0 15999 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 64 137 0 8 3 0 3 3 0 8 0 uaddrrnd 24 4850 0 4770 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4850 0 4770 1 0 1 1 0 8 0 vmmpekpl 168 39368 0 39316 3 0 3 3 0 8 0 vmmpepl 168 616905 0 614209 324 170 154 154 0 357 31 vmsppl 368 4786 0 4770 2 0 2 2 0 8 0 pdppl 4096 9707 0 9619 14 2 12 12 0 8 1 pvpl 32 1553971 0 1532234 374 162 212 221 0 265 29 pmappl 232 4849 0 4786 5 1 4 4 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 798 0 90 21 0 21 21 0 8 0