login: uvm_fault(0xffffffff82542810, 0xffff800000ba7076, 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(0xffffffff82542810, 0xffff800000ba7076, 0, 1) -> e rtable_satoplen(2,ffff800000ba6f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff800021f77250, count: 0 ddb{0}> trace rtable_satoplen(2,ffff800000ba6f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(ad,fffffd807c97b520,ffff800000ba6f78,ffff800000ba6f58,4) at rtable_lookup+0xeb sys/net/rtable.c:391 rtrequest_delete(ffff800021f772f0,4,ffff800000b5d000,ffff800021f773c0,ad) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000ba6f00,800100,ffff800000ba6f58,ad) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_ioctl_change_ifaddr(8040691a,ffff800021f77650,ffff800000b5d000,1) at in_ioctl_change_ifaddr+0x355 in_remove_prefix sys/netinet/in.c:738 [inline] in_ioctl_change_ifaddr(8040691a,ffff800021f77650,ffff800000b5d000,1) at in_ioctl_change_ifaddr+0x355 in_ifscrub sys/netinet/in.c:562 [inline] in_ioctl_change_ifaddr(8040691a,ffff800021f77650,ffff800000b5d000,1) at in_ioctl_change_ifaddr+0x355 sys/netinet/in.c:432 in_ioctl(8040691a,ffff800021f77650,ffff800000b5d000,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd8064a90670,8040691a,ffff800021f77650,ffff800020abec70) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020abec70,ffff800021f77768,ffff800021f777b0) at sys_ioctl+0x5b9 syscall(ffff800021f77830) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800021f77830) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,d47a47e0e0) at Xsyscall+0x128 end of kernel end trace frame: 0xd7315c29f0, count: -10 ddb{0}> show registers rdi 0 rsi 0xff rbp 0xffff800021f771b0 rbx 0xffffffffffffff05 rdx 0xffff800000ba6f7c rcx 0xffff800000ba7077 rax 0xffff800000ba7077 r8 0x4 r9 0x7 r10 0x7ca7b8c030916d1 r11 0xe5427de71df3013c r12 0 r13 0xffff800000ba7077 r14 0xffffffff8248f8d0 inetdomain r15 0x4 rip 0xffffffff820e2620 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800021f77160 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.1) pid=488654 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020abf3d8,0xffffffff8266d588 process=0xffff800020add500 user=0xffff800021f72000, vmspace=0xfffffd807f00b730 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 84548 515799 13094 0 7 0 syz-executor.1 84548 227244 13094 0 2 0x4000000 syz-executor.1 *84548 488654 13094 0 7 0x4000000 syz-executor.1 12477 136903 1 0 3 0x100083 ttyin getty 72865 315771 6676 0 2 0x2 syz-executor.0 13094 405454 6676 0 2 0x482 syz-executor.1 3385 86901 0 0 3 0x14200 acct acct 61482 177944 0 0 3 0x14200 bored sosplice 6676 518644 54778 0 3 0x82 thrsleep syz-fuzzer 6676 155185 54778 0 2 0x4000482 syz-fuzzer 6676 1151 54778 0 3 0x4000082 thrsleep syz-fuzzer 6676 484963 54778 0 3 0x4000082 thrsleep syz-fuzzer 6676 37834 54778 0 3 0x4000082 thrsleep syz-fuzzer 6676 191076 54778 0 3 0x4000082 thrsleep syz-fuzzer 6676 488052 54778 0 3 0x4000082 thrsleep syz-fuzzer 6676 98816 54778 0 3 0x4000082 thrsleep syz-fuzzer 6676 466395 54778 0 2 0x4000482 syz-fuzzer 6676 483829 54778 0 3 0x4000082 kqread syz-fuzzer 54778 490919 36838 0 3 0x10008a pause ksh 36838 119159 28200 0 3 0x92 select sshd 28200 387487 1 0 3 0x80 select sshd 40680 353045 26993 74 3 0x100092 bpf pflogd 26993 372409 1 0 3 0x80 netio pflogd 75089 387710 38067 73 3 0x100090 kqread syslogd 38067 522853 1 0 3 0x100082 netio syslogd 19840 165930 1 77 3 0x100090 poll dhclient 48768 13993 1 0 3 0x80 poll dhclient 1885 33245 0 0 3 0x14200 pgzero zerothread 87477 147413 0 0 3 0x14200 aiodoned aiodoned 21631 171727 0 0 3 0x14200 syncer update 67433 157109 0 0 3 0x14200 cleaner cleaner 56751 85093 0 0 3 0x14200 reaper reaper 33343 248636 0 0 3 0x14200 pgdaemon pagedaemon 34930 498921 0 0 3 0x14200 bored crynlk 16392 313344 0 0 3 0x14200 bored crypto 90668 311128 0 0 3 0x40014200 acpi0 acpi0 34580 419112 0 0 3 0x40014200 idle1 9646 36015 0 0 3 0x14200 bored softnet 28823 64672 0 0 3 0x14200 bored systqmp 65269 93667 0 0 3 0x14200 bored systq 45581 230354 0 0 2 0x40014200 softclock 11823 338800 0 0 3 0x40014200 idle0 88305 510671 0 0 3 0x14200 bored smr 1 283511 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 84548 (syz-executor.1) thread 0xffff800020abec70 (488654) 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 Process 72865 (syz-executor.0) thread 0xffff800020abe780 (315771) exclusive rrwlock inode r = 0 (0xfffffd806ec0e5e8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x447 sys/kern/kern_rwlock.c:306 #2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1352 #5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1164 #7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:2983 #9 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #9 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e7a7f88) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x447 sys/kern/kern_rwlock.c:306 #2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #3 VOP_LOCK+0xf0 sys/kern/vfs_vops.c:615 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:574 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:2968 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9606 6452K 7618K 78643K 21981 0 0 pcb 13 10K 12K 78643K 806 0 0 rtable 101 12K 13K 78643K 5094 0 0 ifaddr 84 23K 27K 78643K 1114 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 2131 0 0 iov 0 0K 28K 78643K 1538 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1216 76K 77K 78643K 6052 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 89 0 0 VM map 4 2K 2K 78643K 10 0 0 sem 12 0K 1K 78643K 2327 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 8041 0 0 sigio 0 0K 0K 78643K 103 0 0 proc 62 63K 95K 78643K 1598 0 0 subproc 32 2K 2K 78643K 323 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 3429 0 0 in_multi 24 1K 2K 78643K 2252 0 0 ether_multi 1 0K 0K 78643K 38 0 0 mrt 0 0K 0K 78643K 30 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 186 821K 821K 78643K 186 0 0 exec 0 0K 1K 78643K 787 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 39K 41K 78643K 23334 0 0 UVM aobj 130 4K 4K 78643K 130 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 640 0 0 NDP 20 0K 0K 78643K 349 0 0 temp 228 3561K 4200K 78643K 88840 0 0 kqueue 0 0K 0K 78643K 47 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 64 229 0 224 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 277 0 275 1 0 1 1 0 8 0 rtentry 112 1110 0 1074 2 0 2 2 0 8 0 unpcb 120 2002 0 1983 5 4 1 2 0 8 0 syncache 264 50 0 50 7 7 0 1 0 8 0 sackhl 24 16 0 16 7 7 0 1 0 8 0 tcpqe 32 22 0 22 6 6 0 1 0 8 0 tcpcb 544 6106 0 6102 45 44 1 14 0 8 0 inpcb 280 13858 0 13848 38 36 2 10 0 8 1 rttmr 72 8 0 7 3 2 1 1 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 3 0 3 1 1 0 1 0 8 0 nd6 48 56 0 54 3 2 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 swfcl 56 12 0 0 1 0 1 1 0 8 0 ppxss 1128 149 0 149 12 11 1 1 0 8 1 pffrag 232 56 0 56 13 13 0 1 0 482 0 pffrnode 88 56 0 56 13 13 0 1 0 8 0 pffrent 40 1314 0 1314 13 13 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 24 687 0 176 4 0 4 4 0 8 0 pfstkey 112 705 0 194 15 0 15 15 0 8 0 pfstate 328 705 0 194 44 1 43 43 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 9 0 8 5 2 3 3 0 8 2 art_heap4 256 3501 0 3303 25 11 14 17 0 8 0 art_table 32 3510 0 3311 3 0 3 3 0 8 0 art_node 16 1109 0 1076 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 9 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 2325 0 2315 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 14300 0 12873 49 2 47 47 0 8 0 ffsino 272 14300 0 12873 96 0 96 96 0 8 0 nchpl 144 25209 0 24745 61 41 20 61 0 8 0 uvmvnodes 72 6109 0 0 112 0 112 112 0 8 0 vnodes 208 6109 0 0 322 0 322 322 0 8 0 namei 1024 71210 0 71209 2 1 1 1 0 8 0 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 8 0 6 3 2 1 1 0 8 0 scsiplug 64 11 0 11 6 6 0 1 0 8 0 scxspl 192 73325 0 73325 22 19 3 4 0 8 3 plimitpl 152 459 0 451 1 0 1 1 0 8 0 sigapl 432 8191 0 8176 3 1 2 3 0 8 0 futexpl 56 117946 0 117946 2 1 1 1 0 8 1 knotepl 112 1133 0 1114 2 1 1 2 0 8 0 kqueuepl 104 1863 0 1860 7 6 1 4 0 8 0 pipepl 112 2600 0 2581 7 5 2 2 0 8 1 fdescpl 488 8192 0 8176 3 0 3 3 0 8 0 filepl 152 48095 0 47992 40 34 6 13 0 8 1 lockfpl 104 1938 0 1937 1 0 1 1 0 8 0 lockfspl 48 624 0 623 1 0 1 1 0 8 0 sessionpl 112 36 0 25 1 0 1 1 0 8 0 pgrppl 48 258 0 247 1 0 1 1 0 8 0 ucredpl 96 7092 0 7082 1 0 1 1 0 8 0 zombiepl 144 8176 0 8176 1 0 1 1 0 8 1 processpl 896 8209 0 8176 4 0 4 4 0 8 0 procpl 632 21349 0 21305 13 8 5 5 0 8 1 srpgc 64 27 0 27 9 9 0 1 0 8 0 sosppl 128 70 0 70 7 6 1 1 0 8 1 sockpl 384 16202 0 16172 57 52 5 15 0 8 1 mcl64k 65536 276 0 0 34 0 34 34 0 8 0 mcl16k 16384 20 0 0 3 1 2 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 16 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 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 329 0 0 17 3 14 17 0 8 1 mtagpl 80 170 0 0 3 0 3 3 0 8 0 mbufpl 256 1133 0 0 56 0 56 56 0 8 0 bufpl 256 26147 0 19099 441 0 441 441 0 8 0 anonpl 16 677490 0 668681 147 96 51 54 0 124 11 amapchunkpl 152 43354 0 43269 65 57 8 18 0 158 3 amappl16 192 38278 0 37777 112 78 34 38 0 8 8 amappl15 184 3095 0 3091 3 2 1 1 0 8 0 amappl14 176 1138 0 1136 1 0 1 1 0 8 0 amappl13 168 775 0 775 3 3 0 1 0 8 0 amappl12 160 16 0 15 2 1 1 1 0 8 0 amappl11 152 1563 0 1548 1 0 1 1 0 8 0 amappl10 144 794 0 790 1 0 1 1 0 8 0 amappl9 136 2609 0 2602 1 0 1 1 0 8 0 amappl8 128 2218 0 2178 2 0 2 2 0 8 0 amappl7 120 894 0 885 1 0 1 1 0 8 0 amappl6 112 1521 0 1506 1 0 1 1 0 8 0 amappl5 104 384 0 370 1 0 1 1 0 8 0 amappl4 96 8320 0 8285 2 1 1 2 0 8 0 amappl3 88 780 0 774 1 0 1 1 0 8 0 amappl2 80 66346 0 66267 3 1 2 3 0 8 0 amappl1 72 161947 0 161503 25 15 10 20 0 8 0 amappl 80 21936 0 21901 1 0 1 1 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 64 129 0 0 3 0 3 3 0 8 0 uaddrrnd 24 8200 0 8176 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8200 0 8176 1 0 1 1 0 8 0 vmmpekpl 168 49810 0 49766 4 1 3 3 0 8 0 vmmpepl 168 957541 0 955880 163 73 90 90 0 357 11 vmsppl 368 8191 0 8176 2 0 2 2 0 8 0 pdppl 4096 16407 0 16366 7 1 6 6 0 8 0 pvpl 32 2116085 0 2103941 314 178 136 140 0 265 30 pmappl 232 8199 0 8182 4 2 2 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 746 0 66 20 0 20 20 0 8 0