kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Wed Oct 23 10:24:37 PDT 2019 OpenBSD/amd64 (ci-openbsd-multicore-0.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.15.217' (ECDSA) to the list of known hosts. 2019/10/23 10:24:53 parsed 1 programs 2019/10/23 10:25:00 executed programs: 0 login: panic: ifa_update_broadaddr does not support dynamic length Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *148212 28981 0 0 0 1K syz-executor.0 132037 4792 0 0x14000 0x200 0 systqmp db_enter() at db_enter+0x18 panic() at panic+0x15c ifa_update_broadaddr(ffff800000a68000,ffff800000a92800,ffff800020b65ad0) at ifa_update_broadaddr+0x61 in_ioctl_change_ifaddr(8040691a,ffff800020b65ab0,ffff800000a68000,1) at in_ioctl_change_ifaddr+0x5a3 in_ioctl(8040691a,ffff800020b65ab0,ffff800000a68000,1) at in_ioctl+0x205 ifioctl(fffffd806e97ad88,8040691a,ffff800020b65ab0,ffff800020abeee8) at ifioctl+0xb64 sys_ioctl(ffff800020abeee8,ffff800020b65bc8,ffff800020b65c10) at sys_ioctl+0x5b9 syscall(ffff800020b65c90) at syscall+0x4a4 Xsyscall(6,0,ffffffffffffff36,0,3,af2ce8d4010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcace0, count: 6 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic ifa_update_broadaddr does not support dynamic length ddb{1}> trace db_enter() at db_enter+0x18 panic() at panic+0x15c ifa_update_broadaddr(ffff800000a68000,ffff800000a92800,ffff800020b65ad0) at ifa_update_broadaddr+0x61 in_ioctl_change_ifaddr(8040691a,ffff800020b65ab0,ffff800000a68000,1) at in_ioctl_change_ifaddr+0x5a3 in_ioctl(8040691a,ffff800020b65ab0,ffff800000a68000,1) at in_ioctl+0x205 ifioctl(fffffd806e97ad88,8040691a,ffff800020b65ab0,ffff800020abeee8) at ifioctl+0xb64 sys_ioctl(ffff800020abeee8,ffff800020b65bc8,ffff800020b65c10) at sys_ioctl+0x5b9 syscall(ffff800020b65c90) at syscall+0x4a4 Xsyscall(6,0,ffffffffffffff36,0,3,af2ce8d4010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcace0, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020b657c0 rbx 0xffff800020b65870 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff8188b28f kprintf+0x16f r9 0x1 r10 0x1083547da6a8267f r11 0xe85aef0f7adf37d2 r12 0x3000000008 r13 0xffff800020b657d0 r14 0x100 r15 0x1 rip 0xffffffff81bab4d8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020b657b0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=148212 stat=onproc flags process=0 proc=0 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020abf8c8,0xffffffff8264c6f8 process=0xffff800020add180 user=0xffff800020b60000, vmspace=0xfffffd807f00a450 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *28981 148212 67893 0 7 0 syz-executor.0 67893 83002 82091 0 3 0x82 nanosleep syz-executor.0 82091 114715 61800 0 3 0x82 thrsleep syz-execprog 82091 59504 61800 0 3 0x4000082 thrsleep syz-execprog 82091 39468 61800 0 3 0x4000082 thrsleep syz-execprog 82091 8568 61800 0 3 0x4000082 thrsleep syz-execprog 82091 403600 61800 0 3 0x4000082 thrsleep syz-execprog 82091 167859 61800 0 3 0x4000082 thrsleep syz-execprog 82091 132487 61800 0 3 0x4000082 thrsleep syz-execprog 82091 377095 61800 0 3 0x4000082 thrsleep syz-execprog 82091 100515 61800 0 3 0x4000082 kqread syz-execprog 61800 502201 75301 0 3 0x10008a pause ksh 75301 60837 62570 0 3 0x92 select sshd 84473 331390 1 0 3 0x100083 ttyin getty 62570 237134 1 0 3 0x80 select sshd 66557 269361 39165 74 3 0x100092 bpf pflogd 39165 228232 1 0 3 0x80 netio pflogd 39240 373756 2628 73 3 0x100090 kqread syslogd 2628 288169 1 0 3 0x100082 netio syslogd 66615 175435 1 77 3 0x100090 poll dhclient 46912 270264 1 0 3 0x80 poll dhclient 1620 47474 0 0 3 0x14200 pgzero zerothread 66296 15494 0 0 3 0x14200 aiodoned aiodoned 94597 456183 0 0 3 0x14200 syncer update 96702 327978 0 0 3 0x14200 cleaner cleaner 42259 228375 0 0 3 0x14200 reaper reaper 17539 405026 0 0 3 0x14200 pgdaemon pagedaemon 3943 335875 0 0 3 0x14200 bored crynlk 51910 448257 0 0 3 0x14200 bored crypto 43575 91080 0 0 3 0x40014200 acpi0 acpi0 30121 402850 0 0 3 0x40014200 idle1 67315 441154 0 0 3 0x14200 bored softnet 4792 132037 0 0 7 0x14200 systqmp 39137 303506 0 0 3 0x14200 bored systq 71151 293055 0 0 3 0x40014200 bored softclock 30075 158899 0 0 3 0x40014200 idle0 93836 279259 0 0 3 0x14200 bored smr 1 492102 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 28981 (syz-executor.0) thread 0xffff800020abeee8 (148212) exclusive rwlock netlock r = 0 (0xffffffff824e8728) #0 witness_lock+0x52e #1 in_ioctl_change_ifaddr+0x3f #2 in_ioctl+0x205 #3 ifioctl+0xb64 #4 sys_ioctl+0x5b9 #5 syscall+0x4a4 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8266bc58) #0 witness_lock+0x52e #1 syscall+0x400 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9457 6385K 6385K 78643K 10544 0 0 pcb 13 8K 8K 78643K 15 0 0 rtable 79 2K 2K 78643K 163 0 0 ifaddr 32 9K 9K 78643K 33 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1468 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1181 74K 74K 78643K 1186 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 1K 78643K 2 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 3 8K 12K 78643K 18 0 0 proc 59 63K 83K 78643K 384 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 in_multi 22 1K 1K 78643K 22 0 0 ether_multi 1 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 18 79K 79K 78643K 18 0 0 exec 0 0K 1K 78643K 199 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 71 11K 12K 78643K 963 0 0 UVM aobj 2 2K 2K 78643K 2 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 7 0K 0K 78643K 7 0 0 temp 48 3546K 3610K 78643K 3337 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 4 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 3 1 0 1 1 0 8 0 unpcb 120 29 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 1 0 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 34 0 27 1 0 1 1 0 8 0 nd6 48 2 0 0 1 0 1 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 10 0 0 1 0 1 1 0 8 0 pfstkey 112 10 0 0 1 0 1 1 0 8 0 pfstate 328 10 0 0 1 0 1 1 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 168 0 0 11 0 11 11 0 8 0 art_table 32 169 0 0 2 0 2 2 0 8 0 art_node 16 33 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1422 0 20 46 0 46 46 0 8 0 ffsino 272 1422 0 20 94 0 94 94 0 8 0 nchpl 144 1661 0 49 60 0 60 60 0 8 0 uvmvnodes 72 1432 0 0 27 0 27 27 0 8 0 vnodes 208 1432 0 0 76 0 76 76 0 8 0 namei 1024 4142 0 4142 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4082 0 4082 2 1 1 2 0 8 1 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 432 226 0 212 2 0 2 2 0 8 0 knotepl 112 39 0 28 1 0 1 1 0 8 0 kqueuepl 104 2 0 0 1 0 1 1 0 8 0 pipepl 112 154 0 141 1 0 1 1 0 8 0 fdescpl 488 227 0 212 3 0 3 3 0 8 0 filepl 152 1121 0 1062 3 0 3 3 0 8 0 lockfpl 104 5 0 4 1 0 1 1 0 8 0 lockfspl 48 3 0 2 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 52 0 43 1 0 1 1 0 8 0 zombiepl 144 212 0 212 1 0 1 1 0 8 1 processpl 896 242 0 212 4 0 4 4 0 8 0 procpl 632 250 0 212 4 0 4 4 0 8 0 sockpl 384 80 0 61 2 0 2 2 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 66 0 0 9 0 9 9 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 99 0 0 6 0 6 6 0 8 0 bufpl 256 5887 0 1315 286 0 286 286 0 8 0 anonpl 16 22195 0 20585 14 1 13 13 0 124 6 amapchunkpl 152 799 0 733 5 0 5 5 0 158 2 amappl16 192 137 0 107 2 0 2 2 0 8 0 amappl14 176 26 0 23 1 0 1 1 0 8 0 amappl12 160 9 0 6 2 1 1 1 0 8 0 amappl11 152 54 0 39 1 0 1 1 0 8 0 amappl10 144 24 0 19 1 0 1 1 0 8 0 amappl9 136 459 0 454 1 0 1 1 0 8 0 amappl8 128 130 0 119 1 0 1 1 0 8 0 amappl7 120 37 0 32 1 0 1 1 0 8 0 amappl6 112 78 0 68 1 0 1 1 0 8 0 amappl5 104 123 0 110 1 0 1 1 0 8 0 amappl4 96 499 0 473 1 0 1 1 0 8 0 amappl3 88 115 0 110 1 0 1 1 0 8 0 amappl2 80 918 0 857 3 0 3 3 0 8 1 amappl1 72 15292 0 14866 25 7 18 20 0 8 8 amappl 80 479 0 450 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 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 227 0 212 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 227 0 212 1 0 1 1 0 8 0 vmmpekpl 168 6408 0 6385 2 0 2 2 0 8 0 vmmpepl 168 32317 0 31373 88 8 80 80 0 357 38 vmsppl 368 226 0 212 2 0 2 2 0 8 0 pdppl 4096 461 0 424 6 0 6 6 0 8 1 pvpl 32 112389 0 108358 115 0 115 115 0 265 81 pmappl 232 226 0 212 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 425 0 3 13 0 13 13 0 8 0 ddb{1}>