kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Tue Sep 10 12:35:21 PDT 2019 OpenBSD/amd64 (ci-openbsd-multicore-3.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.5' (ECDSA) to the list of known hosts. 2019/09/10 12:35:46 parsed 1 programs 2019/09/10 12:35:51 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 *479385 63351 0 0 0 0K syz-executor.0 db_enter() at db_enter+0x18 panic() at panic+0x15c ifa_update_broadaddr(ffff800000a66000,ffff800000a90800,ffff800020b5f230) at ifa_update_broadaddr+0x61 in_ioctl(80206913,ffff800020b5f220,ffff800000a66000,1) at in_ioctl+0x463 ifioctl(fffffd806f6d6a80,80206913,ffff800020b5f220,ffff800020abfb40) at ifioctl+0xb64 sys_ioctl(ffff800020abfb40,ffff800020b5f338,ffff800020b5f380) at sys_ioctl+0x5b9 syscall(ffff800020b5f400) at syscall+0x4a4 Xsyscall(6,0,ffffffffffffff36,0,3,21ef146b010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd2ae0, count: 7 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic ifa_update_broadaddr does not support dynamic length ddb{0}> trace db_enter() at db_enter+0x18 panic() at panic+0x15c ifa_update_broadaddr(ffff800000a66000,ffff800000a90800,ffff800020b5f230) at ifa_update_broadaddr+0x61 in_ioctl(80206913,ffff800020b5f220,ffff800000a66000,1) at in_ioctl+0x463 ifioctl(fffffd806f6d6a80,80206913,ffff800020b5f220,ffff800020abfb40) at ifioctl+0xb64 sys_ioctl(ffff800020abfb40,ffff800020b5f338,ffff800020b5f380) at sys_ioctl+0x5b9 syscall(ffff800020b5f400) at syscall+0x4a4 Xsyscall(6,0,ffffffffffffff36,0,3,21ef146b010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd2ae0, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020b5efc0 rbx 0xffff800020b5f070 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81dbebdf kprintf+0x16f r9 0x1 r10 0x57b3b63529368874 r11 0xfae26ac2001caa1 r12 0x3000000008 r13 0xffff800020b5efd0 r14 0x100 r15 0x1 rip 0xffffffff81e59458 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020b5efb0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=479385 stat=onproc flags process=0 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020abf8c8,0xffffffff8262fc50 process=0xffff800020add500 user=0xffff800020b5a000, vmspace=0xfffffd807f00ca10 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *63351 479385 13426 0 7 0 syz-executor.0 13426 308793 66335 0 3 0x82 nanosleep syz-executor.0 66335 41305 91034 0 3 0x82 thrsleep syz-execprog 66335 155988 91034 0 3 0x4000082 nanosleep syz-execprog 66335 125954 91034 0 3 0x4000082 thrsleep syz-execprog 66335 419857 91034 0 3 0x4000082 thrsleep syz-execprog 66335 82036 91034 0 3 0x4000082 kqread syz-execprog 66335 407925 91034 0 3 0x4000082 thrsleep syz-execprog 66335 970 91034 0 3 0x4000082 thrsleep syz-execprog 66335 244665 91034 0 3 0x4000082 thrsleep syz-execprog 66335 250981 91034 0 3 0x4000082 thrsleep syz-execprog 91034 292921 63186 0 3 0x10008a pause ksh 63186 483030 62207 0 3 0x92 select sshd 85095 371834 1 0 3 0x100083 ttyin getty 62207 514256 1 0 3 0x80 select sshd 81603 144402 71270 74 3 0x100092 bpf pflogd 71270 466797 1 0 3 0x80 netio pflogd 73415 406176 73555 73 3 0x100090 kqread syslogd 73555 203378 1 0 3 0x100082 netio syslogd 32168 457410 1 77 3 0x100090 poll dhclient 57808 391370 1 0 3 0x80 poll dhclient 92489 38726 0 0 3 0x14200 pgzero zerothread 43853 119728 0 0 3 0x14200 aiodoned aiodoned 18621 452219 0 0 3 0x14200 syncer update 6728 486730 0 0 3 0x14200 cleaner cleaner 95764 485029 0 0 3 0x14200 reaper reaper 69670 324654 0 0 3 0x14200 pgdaemon pagedaemon 23450 41155 0 0 3 0x14200 bored crynlk 32828 285556 0 0 3 0x14200 bored crypto 64375 392462 0 0 3 0x40014200 acpi0 acpi0 80889 128379 0 0 7 0x40014200 idle1 64755 170645 0 0 3 0x14200 bored softnet 97070 451843 0 0 3 0x14200 bored systqmp 93986 475287 0 0 3 0x14200 bored systq 34170 34670 0 0 3 0x40014200 bored softclock 14533 256347 0 0 3 0x40014200 idle0 87808 209537 0 0 3 0x14200 bored smr 1 315706 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 63351 (syz-executor.0) thread 0xffff800020abfb40 (479385) exclusive rwlock netlock r = 0 (0xffffffff824e7f58) #0 witness_lock+0x52e #1 in_ioctl+0x142 #2 ifioctl+0xb64 #3 sys_ioctl+0x5b9 #4 syscall+0x4a4 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82663928) #0 witness_lock+0x52e #1 syscall+0x400 #2 Xsyscall+0x128 ddb{0}> 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 13 0 0 rtable 83 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 72 12K 12K 78643K 954 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 3538K 3602K 78643K 3336 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 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 1 1 0 1 1 0 8 0 unpcb 120 30 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 1 1 0 1 1 0 8 0 pfstkey 112 10 0 1 1 0 1 1 0 8 0 pfstate 328 10 0 1 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 256 166 0 0 11 0 11 11 0 8 0 art_table 32 167 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 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4233 0 4233 8 1 7 7 0 8 7 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 2 1 1 1 0 8 0 fdescpl 488 227 0 212 3 0 3 3 0 8 0 filepl 152 1122 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 2 1 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 81 0 61 2 0 2 2 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 72 0 0 9 0 9 9 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 92 0 0 6 0 6 6 0 8 0 bufpl 256 5885 0 1315 286 0 286 286 0 8 0 anonpl 16 22085 0 20516 15 2 13 13 0 124 6 amapchunkpl 152 851 0 789 5 0 5 5 0 158 2 amappl16 192 145 0 112 2 0 2 2 0 8 0 amappl14 176 22 0 20 2 1 1 1 0 8 0 amappl13 168 1 0 1 1 1 0 1 0 8 0 amappl12 160 9 0 8 1 0 1 1 0 8 0 amappl11 152 50 0 35 1 0 1 1 0 8 0 amappl10 144 8 0 6 1 0 1 1 0 8 0 amappl9 136 463 0 456 1 0 1 1 0 8 0 amappl8 128 133 0 122 1 0 1 1 0 8 0 amappl7 120 35 0 31 1 0 1 1 0 8 0 amappl6 112 76 0 68 1 0 1 1 0 8 0 amappl5 104 121 0 106 1 0 1 1 0 8 0 amappl4 96 496 0 471 1 0 1 1 0 8 0 amappl3 88 115 0 110 1 0 1 1 0 8 0 amappl2 80 957 0 894 3 0 3 3 0 8 1 amappl1 72 15300 0 14871 26 8 18 20 0 8 8 amappl 80 477 0 449 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 dma64 64 259 0 259 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 6418 0 6396 2 0 2 2 0 8 0 vmmpepl 168 32404 0 31458 92 12 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 112367 0 108394 117 3 114 114 0 265 80 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 112 426 0 4 13 0 13 13 0 8 0 ddb{0}>