kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Wed Oct 2 07:00:12 PDT 2019 OpenBSD/amd64 (ci-openbsd-multicore-5.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.3' (ECDSA) to the list of known hosts. 2019/10/02 07:16:12 parsed 1 programs 2019/10/02 07:16:19 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 *219401 35760 0 0 0 1K syz-executor.0 db_enter() at db_enter+0x18 panic() at panic+0x15c ifa_update_broadaddr(ffff800000a67000,ffff800000a91800,ffff800020b4cef0) at ifa_update_broadaddr+0x61 in_ioctl(80206913,ffff800020b4cee0,ffff800000a67000,1) at in_ioctl+0x463 ifioctl(fffffd806e96dd88,80206913,ffff800020b4cee0,ffff800020abf8c8) at ifioctl+0xb64 sys_ioctl(ffff800020abf8c8,ffff800020b4cff8,ffff800020b4d040) at sys_ioctl+0x5b9 syscall(ffff800020b4d0c0) at syscall+0x4a4 Xsyscall(6,0,ffffffffffffff36,0,3,548e69a1010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe24a0, 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{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(ffff800000a67000,ffff800000a91800,ffff800020b4cef0) at ifa_update_broadaddr+0x61 in_ioctl(80206913,ffff800020b4cee0,ffff800000a67000,1) at in_ioctl+0x463 ifioctl(fffffd806e96dd88,80206913,ffff800020b4cee0,ffff800020abf8c8) at ifioctl+0xb64 sys_ioctl(ffff800020abf8c8,ffff800020b4cff8,ffff800020b4d040) at sys_ioctl+0x5b9 syscall(ffff800020b4d0c0) at syscall+0x4a4 Xsyscall(6,0,ffffffffffffff36,0,3,548e69a1010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe24a0, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020b4cc80 rbx 0xffff800020b4cd30 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81c6670f kprintf+0x16f r9 0x1 r10 0xdf0f45c50956db0f r11 0xece40629f491cbb9 r12 0x3000000008 r13 0xffff800020b4cc90 r14 0x100 r15 0x1 rip 0xffffffff812d2ac8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020b4cc70 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=219401 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020abfb40,0xffffffff8264fc48 process=0xffff800020adce00 user=0xffff800020b48000, vmspace=0xfffffd807f00ba10 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *35760 219401 12682 0 7 0 syz-executor.0 12682 109672 38475 0 3 0x82 nanosleep syz-executor.0 38475 139092 81069 0 3 0x82 kqread syz-execprog 38475 159809 81069 0 3 0x4000082 thrsleep syz-execprog 38475 399890 81069 0 3 0x4000082 thrsleep syz-execprog 38475 266215 81069 0 3 0x4000082 thrsleep syz-execprog 38475 173182 81069 0 3 0x4000082 thrsleep syz-execprog 38475 487326 81069 0 3 0x4000082 thrsleep syz-execprog 38475 494638 81069 0 3 0x4000082 thrsleep syz-execprog 38475 380164 81069 0 3 0x4000082 thrsleep syz-execprog 38475 224179 81069 0 3 0x4000082 thrsleep syz-execprog 81069 53947 92277 0 3 0x10008a pause ksh 92277 365491 86501 0 3 0x92 select sshd 14756 93941 1 0 3 0x100083 ttyin getty 86501 275814 1 0 3 0x80 select sshd 17067 362163 23264 74 3 0x100092 bpf pflogd 23264 183126 1 0 3 0x80 netio pflogd 11612 38675 42879 73 3 0x100090 kqread syslogd 42879 214521 1 0 3 0x100082 netio syslogd 78003 185372 1 77 3 0x100090 poll dhclient 96333 211552 1 0 3 0x80 poll dhclient 85289 112144 0 0 3 0x14200 pgzero zerothread 19938 504117 0 0 3 0x14200 aiodoned aiodoned 15887 457621 0 0 3 0x14200 syncer update 99548 87739 0 0 3 0x14200 cleaner cleaner 36971 105309 0 0 3 0x14200 reaper reaper 48931 151204 0 0 3 0x14200 pgdaemon pagedaemon 63764 449708 0 0 3 0x14200 bored crynlk 8955 187984 0 0 3 0x14200 bored crypto 98764 465164 0 0 3 0x40014200 acpi0 acpi0 3355 485841 0 0 3 0x40014200 idle1 93822 145987 0 0 3 0x14200 bored softnet 88027 408958 0 0 3 0x14200 bored systqmp 2638 443849 0 0 3 0x14200 bored systq 96053 185637 0 0 3 0x40014200 bored softclock 615 302777 0 0 7 0x40014200 idle0 194 37944 0 0 3 0x14200 bored smr 1 9787 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 35760 (syz-executor.0) thread 0xffff800020abf8c8 (219401) exclusive rwlock netlock r = 0 (0xffffffff8246c0b8) #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 (0xffffffff82651848) #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 14 8K 8K 78643K 16 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 73 12K 12K 78643K 958 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 3542K 3606K 78643K 3336 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 1 1 0 1 1 0 8 0 unpcb 120 29 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 2 1 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 36 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 6 2 1 1 1 0 8 0 pfstkey 112 10 0 6 2 1 1 1 0 8 0 pfstate 328 10 0 6 2 1 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 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4326 0 4326 41 40 1 7 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 3 2 1 1 0 8 0 fdescpl 488 227 0 212 3 0 3 3 0 8 0 filepl 152 1123 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 3 2 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 82 0 61 3 0 3 3 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 68 0 0 9 0 9 9 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 118 0 0 6 0 6 6 0 8 0 bufpl 256 5887 0 1315 286 0 286 286 0 8 0 anonpl 16 22112 0 20533 16 3 13 13 0 124 5 amapchunkpl 152 846 0 780 5 0 5 5 0 158 2 amappl16 192 136 0 107 2 0 2 2 0 8 0 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 27 0 23 3 2 1 1 0 8 0 amappl12 160 14 0 11 2 1 1 1 0 8 0 amappl11 152 48 0 33 1 0 1 1 0 8 0 amappl10 144 11 0 9 1 0 1 1 0 8 0 amappl9 136 460 0 455 1 0 1 1 0 8 0 amappl8 128 129 0 120 1 0 1 1 0 8 0 amappl7 120 44 0 38 1 0 1 1 0 8 0 amappl6 112 77 0 67 1 0 1 1 0 8 0 amappl5 104 126 0 112 1 0 1 1 0 8 0 amappl4 96 500 0 473 1 0 1 1 0 8 0 amappl3 88 118 0 112 1 0 1 1 0 8 0 amappl2 80 952 0 890 3 0 3 3 0 8 1 amappl1 72 15336 0 14908 25 7 18 20 0 8 8 amappl 80 480 0 451 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 6417 0 6395 2 0 2 2 0 8 0 vmmpepl 168 32560 0 31608 99 19 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 112681 0 108687 124 9 115 115 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 112 427 0 5 13 0 13 13 0 8 0