kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sat Jan 11 11:02:30 PST 2020 OpenBSD/amd64 (ci-openbsd-main-5.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.10.16' (ECDSA) to the list of known hosts. 2020/01/11 11:02:42 parsed 1 programs 2020/01/11 11:02:47 executed programs: 0 login: panic: receive 3: so 0xfffffd805e4d9180, so_type 3, m 0xfffffd805c148500, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *459396 21334 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff82190d28) at panic+0x15c soreceive(fffffd805e4d9180,0,ffff80001d37e708,0,0,ffff80001d37e614) at soreceive+0x16e7 soo_read(fffffd805f3fd3c0,ffff80001d37e708,0) at soo_read+0x53 dofilereadv(ffff8000ffff8008,6,ffff80001d37e708,0,ffff80001d37e7f0) at dofilereadv+0x1a2 sys_read(ffff8000ffff8008,ffff80001d37e7a0,ffff80001d37e7f0) at sys_read+0x83 syscall(ffff80001d37e870) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9190, 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic receive 3: so 0xfffffd805e4d9180, so_type 3, m 0xfffffd805c148500, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff82190d28) at panic+0x15c soreceive(fffffd805e4d9180,0,ffff80001d37e708,0,0,ffff80001d37e614) at soreceive+0x16e7 soo_read(fffffd805f3fd3c0,ffff80001d37e708,0) at soo_read+0x53 dofilereadv(ffff8000ffff8008,6,ffff80001d37e708,0,ffff80001d37e7f0) at dofilereadv+0x1a2 sys_read(ffff8000ffff8008,ffff80001d37e7a0,ffff80001d37e7f0) at sys_read+0x83 syscall(ffff80001d37e870) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9190, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d37e450 rbx 0xffff80001d37e500 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff80001d37e410 r9 0x1 r10 0x3f0996a35928bfa7 r11 0x6df2729ef8abba4e r12 0x3000000008 r13 0xffff80001d37e460 r14 0x100 r15 0x1 rip 0xffffffff810f1a18 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d37e440 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=459396 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8c60,0xffff8000ffff8ee8 process=0xffff8000ffff6010 user=0xffff80001d379000, vmspace=0xfffffd806bc09330 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 84592 417529 18562 0 3 0x82 thrsleep syz-execprog 84592 298684 18562 0 3 0x4000082 nanosleep syz-execprog 84592 323251 18562 0 3 0x4000082 thrsleep syz-execprog 84592 449938 18562 0 3 0x4000082 thrsleep syz-execprog 84592 88227 18562 0 3 0x4000082 wait syz-execprog 84592 298700 18562 0 3 0x4000082 thrsleep syz-execprog 84592 251990 18562 0 3 0x4000082 thrsleep syz-execprog 18562 416397 4429 0 3 0x10008a pause ksh 4429 502751 98877 0 3 0x92 select sshd 57533 523216 1 0 3 0x100083 ttyin getty 98877 398163 1 0 3 0x80 select sshd 39795 182082 36805 73 3 0x100090 kqread syslogd 36805 69943 1 0 3 0x100082 netio syslogd 35347 310573 1 77 2 0x100010 dhclient *21334 459396 1 0 7 0 dhclient 30076 48013 0 0 3 0x14200 pgzero zerothread 99177 459571 0 0 3 0x14200 aiodoned aiodoned 38187 154402 0 0 3 0x14200 syncer update 1029 365191 0 0 3 0x14200 cleaner cleaner 31413 394592 0 0 3 0x14200 reaper reaper 25504 518704 0 0 3 0x14200 pgdaemon pagedaemon 70186 423692 0 0 3 0x14200 bored crynlk 23674 304353 0 0 3 0x14200 bored crypto 8237 186606 0 0 3 0x40014200 acpi0 acpi0 38291 432636 0 0 2 0x14200 softnet 71291 164914 0 0 2 0x14200 systqmp 26374 321877 0 0 3 0x14200 bored systq 33508 96149 0 0 3 0x40014200 bored softclock 97698 328166 0 0 3 0x40014200 idle0 70540 143871 0 0 3 0x14200 bored smr 1 128962 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9440 6321K 6321K 78643K 10539 0 pcb 13 8K 8K 78643K 13 0 rtable 63 1K 2K 78643K 157 0 ifaddr 24 7K 9K 78643K 33 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1180 74K 74K 78643K 1185 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 1K 78643K 2 0 VM map 2 0K 0K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 2 4K 12K 78643K 18 0 proc 47 38K 54K 78643K 318 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 1K 78643K 22 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 19 95K 95K 78643K 19 0 exec 0 0K 1K 78643K 171 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 77 12K 12K 78643K 879 0 UVM aobj 2 2K 2K 78643K 2 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 3 0K 0K 78643K 6 0 temp 18 2997K 3061K 78643K 3054 0 kqueue 3 4K 4K 78643K 3 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 4 0 2 1 0 1 1 0 8 0 rtpcb 80 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 11 1 0 1 1 0 8 0 unpcb 120 27 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 27 0 21 1 0 1 1 0 8 0 nd6 48 2 0 2 1 0 1 1 0 8 1 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 1415 0 20 46 0 46 46 0 8 1 ffsino 240 1415 0 20 83 0 83 83 0 8 0 nchpl 144 1640 0 38 60 0 60 60 0 8 0 uvmvnodes 72 1424 0 0 26 0 26 26 0 8 0 vnodes 208 1424 0 0 75 0 75 75 0 8 0 namei 1024 3864 0 3864 1 0 1 1 0 8 1 scxspl 192 4016 0 4016 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 432 197 0 186 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 pipelkpl 16 67 0 60 1 0 1 1 0 8 0 pipepl 120 134 0 122 1 0 1 1 0 8 0 fdescpl 432 198 0 186 2 0 2 2 0 8 0 filepl 120 998 0 946 2 0 2 2 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 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 47 0 40 1 0 1 1 0 8 0 zombiepl 144 187 0 186 1 0 1 1 0 8 0 processpl 864 212 0 186 4 0 4 4 0 8 0 procpl 632 218 0 186 3 0 3 3 0 8 0 sockpl 384 71 0 55 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5506 0 5477 6 2 4 6 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9629 0 9553 8 1 7 7 0 8 0 bufpl 280 5847 0 1326 323 0 323 323 0 8 0 anonpl 16 21011 0 19545 14 1 13 13 0 107 6 amapchunkpl 152 713 0 652 5 0 5 5 0 158 1 amappl16 192 73 0 48 2 0 2 2 0 8 0 amappl15 184 51 0 46 1 0 1 1 0 8 0 amappl14 176 22 0 19 1 0 1 1 0 8 0 amappl12 160 10 0 6 1 0 1 1 0 8 0 amappl11 152 44 0 33 1 0 1 1 0 8 0 amappl10 144 9 0 8 1 0 1 1 0 8 0 amappl9 136 351 0 349 1 0 1 1 0 8 0 amappl8 128 96 0 85 1 0 1 1 0 8 0 amappl7 120 88 0 78 1 0 1 1 0 8 0 amappl6 112 55 0 50 1 0 1 1 0 8 0 amappl5 104 217 0 208 1 0 1 1 0 8 0 amappl4 96 421 0 399 1 0 1 1 0 8 0 amappl3 88 124 0 117 1 0 1 1 0 8 0 amappl2 80 851 0 791 3 0 3 3 0 8 1 amappl1 72 13371 0 12970 26 8 18 20 0 8 8 amappl 80 434 0 409 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 18 0 17 1 0 1 1 0 8 0 aobjpl 64 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 198 0 186 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 198 0 186 1 0 1 1 0 8 0 vmmpekpl 168 6056 0 6041 1 0 1 1 0 8 0 vmmpepl 168 29676 0 28797 85 6 79 79 0 357 38 vmsppl 272 197 0 186 1 0 1 1 0 8 0 pdppl 4096 402 0 372 5 0 5 5 0 8 0 pvpl 32 104320 0 100594 113 0 113 113 0 265 82 pmappl 200 197 0 186 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 123 0 5 4 0 4 4 0 8 0 ddb>