kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Wed Oct 23 09:22:48 PDT 2019 OpenBSD/amd64 (ci-openbsd-multicore-6.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.10.36' (ECDSA) to the list of known hosts. 2019/10/23 09:23:28 parsed 1 programs 2019/10/23 09:23:35 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 *431942 6257 0 0 0 0K syz-executor.0 db_enter() at db_enter+0x18 panic() at panic+0x15c ifa_update_broadaddr(ffff800000a68000,ffff800000a92800,ffff800020b61150) at ifa_update_broadaddr+0x61 in_ioctl_change_ifaddr(8040691a,ffff800020b61130,ffff800000a68000,1) at in_ioctl_change_ifaddr+0x5a3 in_ioctl(8040691a,ffff800020b61130,ffff800000a68000,1) at in_ioctl+0x205 ifioctl(fffffd806e983908,8040691a,ffff800020b61130,ffff800020ab18c8) at ifioctl+0xb64 sys_ioctl(ffff800020ab18c8,ffff800020b61248,ffff800020b61290) at sys_ioctl+0x5b9 syscall(ffff800020b61310) at syscall+0x4a4 Xsyscall(6,0,ffffffffffffff36,0,3,d9564d010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdf880, 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{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(ffff800000a68000,ffff800000a92800,ffff800020b61150) at ifa_update_broadaddr+0x61 in_ioctl_change_ifaddr(8040691a,ffff800020b61130,ffff800000a68000,1) at in_ioctl_change_ifaddr+0x5a3 in_ioctl(8040691a,ffff800020b61130,ffff800000a68000,1) at in_ioctl+0x205 ifioctl(fffffd806e983908,8040691a,ffff800020b61130,ffff800020ab18c8) at ifioctl+0xb64 sys_ioctl(ffff800020ab18c8,ffff800020b61248,ffff800020b61290) at sys_ioctl+0x5b9 syscall(ffff800020b61310) at syscall+0x4a4 Xsyscall(6,0,ffffffffffffff36,0,3,d9564d010) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffdf880, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020b60e40 rbx 0xffff800020b60ef0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff8188b28f kprintf+0x16f r9 0x1 r10 0x6d014a5265f687f4 r11 0x6d368649bb8850bb r12 0x3000000008 r13 0xffff800020b60e50 r14 0x100 r15 0x1 rip 0xffffffff81bab4d8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020b60e30 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=431942 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab1650,0xffffffff8264c6f8 process=0xffff800020add880 user=0xffff800020b5c000, vmspace=0xfffffd807f00a8a0 estcpu=1, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND * 6257 431942 79807 0 7 0 syz-executor.0 79807 308406 16872 0 3 0x82 nanosleep syz-executor.0 16872 286240 75814 0 3 0x82 kqread syz-execprog 16872 131286 75814 0 3 0x4000082 nanosleep syz-execprog 16872 511276 75814 0 3 0x4000082 thrsleep syz-execprog 16872 221326 75814 0 3 0x4000082 thrsleep syz-execprog 16872 224451 75814 0 3 0x4000082 thrsleep syz-execprog 16872 95706 75814 0 3 0x4000082 thrsleep syz-execprog 16872 96320 75814 0 3 0x4000082 thrsleep syz-execprog 16872 506222 75814 0 3 0x4000082 thrsleep syz-execprog 16872 244782 75814 0 3 0x4000082 thrsleep syz-execprog 75814 119452 92151 0 3 0x10008a pause ksh 92151 77977 29978 0 3 0x92 select sshd 49037 431086 1 0 3 0x100083 ttyin getty 29978 504467 1 0 3 0x80 select sshd 77612 72684 5950 74 3 0x100092 bpf pflogd 5950 61754 1 0 3 0x80 netio pflogd 11012 354829 4282 73 3 0x100090 kqread syslogd 4282 45951 1 0 3 0x100082 netio syslogd 25055 247687 1 77 3 0x100090 poll dhclient 95962 462991 1 0 3 0x80 poll dhclient 56511 306120 0 0 3 0x14200 pgzero zerothread 73433 509007 0 0 3 0x14200 aiodoned aiodoned 70361 355368 0 0 3 0x14200 syncer update 72984 185257 0 0 3 0x14200 cleaner cleaner 84272 308189 0 0 3 0x14200 reaper reaper 49403 35162 0 0 3 0x14200 pgdaemon pagedaemon 40640 272942 0 0 3 0x14200 bored crynlk 92142 199002 0 0 3 0x14200 bored crypto 55778 254928 0 0 3 0x40014200 acpi0 acpi0 32741 162019 0 0 7 0x40014200 idle1 17007 183886 0 0 3 0x14200 bored softnet 68974 234309 0 0 3 0x14200 bored systqmp 51218 295603 0 0 3 0x14200 bored systq 42559 74536 0 0 3 0x40014200 bored softclock 40779 159085 0 0 3 0x40014200 idle0 94708 332327 0 0 3 0x14200 bored smr 1 20143 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 6257 (syz-executor.0) thread 0xffff800020ab18c8 (431942) 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{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 15 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 74 12K 12K 78643K 956 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 3335 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 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 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 11 0 2 1 0 1 1 0 8 0 pfstkey 112 11 0 2 1 0 1 1 0 8 0 pfstate 328 11 0 2 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 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4245 0 4245 9 8 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 2 1 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 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 80 0 61 2 0 2 2 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 56 0 0 7 0 7 7 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 97 0 0 5 0 5 5 0 8 0 bufpl 256 5887 0 1315 286 0 286 286 0 8 0 anonpl 16 22106 0 20509 15 2 13 13 0 124 5 amapchunkpl 152 812 0 744 5 0 5 5 0 158 1 amappl16 192 145 0 112 2 0 2 2 0 8 0 amappl14 176 28 0 24 2 1 1 1 0 8 0 amappl12 160 5 0 4 2 1 1 1 0 8 0 amappl11 152 48 0 32 1 0 1 1 0 8 0 amappl10 144 13 0 11 1 0 1 1 0 8 0 amappl9 136 461 0 456 1 0 1 1 0 8 0 amappl8 128 125 0 116 1 0 1 1 0 8 0 amappl7 120 34 0 31 1 0 1 1 0 8 0 amappl6 112 76 0 67 1 0 1 1 0 8 0 amappl5 104 122 0 108 1 0 1 1 0 8 0 amappl4 96 502 0 475 1 0 1 1 0 8 0 amappl3 88 121 0 110 1 0 1 1 0 8 0 amappl2 80 947 0 887 4 1 3 3 0 8 1 amappl1 72 15314 0 14891 26 8 18 20 0 8 8 amappl 80 479 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 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 32496 0 31550 96 16 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 112499 0 108478 121 6 115 115 0 265 82 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 112 423 0 4 12 0 12 12 0 8 0 ddb{0}>