kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sun Dec 1 14:26:52 PST 2019 OpenBSD/amd64 (ci-openbsd-main-4.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.10.19' (ECDSA) to the list of known hosts. 2019/12/01 14:27:07 parsed 1 programs 2019/12/01 14:27:13 executed programs: 0 login: panic: receive 3: so 0xfffffd803bc66300, so_type 3, m 0xfffffd8033128400, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 25462 95163 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic() at panic+0x15c soreceive(fffffd803bc66300,0,ffff800014886398,0,0,ffff8000148862a4) at soreceive+0x16e7 soo_read(fffffd803755b690,ffff800014886398,0) at soo_read+0x53 dofilereadv(ffff8000ffff8a28,6,ffff800014886398,0,ffff800014886480) at dofilereadv+0x1a2 sys_read(ffff8000ffff8a28,ffff800014886430,ffff800014886480) at sys_read+0x83 syscall(ffff800014886500) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd5d60, 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 0xfffffd803bc66300, so_type 3, m 0xfffffd8033128400, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic() at panic+0x15c soreceive(fffffd803bc66300,0,ffff800014886398,0,0,ffff8000148862a4) at soreceive+0x16e7 soo_read(fffffd803755b690,ffff800014886398,0) at soo_read+0x53 dofilereadv(ffff8000ffff8a28,6,ffff800014886398,0,ffff800014886480) at dofilereadv+0x1a2 sys_read(ffff8000ffff8a28,ffff800014886430,ffff800014886480) at sys_read+0x83 syscall(ffff800014886500) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd5d60, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff8000148860e0 rbx 0xffff800014886190 rdx 0x2 rcx 0x1 rax 0x1 r8 0xffff8000148860a0 r9 0x1 r10 0x5ee7f63d28bdb70d r11 0xf6f1dfd31aedbdc r12 0x3000000008 r13 0xffff8000148860f0 r14 0x100 r15 0x1 rip 0xffffffff81790a28 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff8000148860d0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=25462 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff9448,0xffff8000ffff8cc0 process=0xffff8000ffff6a90 user=0xffff800014881000, vmspace=0xfffffd803f012770 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 28041 462861 14770 0 3 0x82 wait syz-execprog 28041 244272 14770 0 3 0x4000082 nanosleep syz-execprog 28041 230951 14770 0 3 0x4000082 thrsleep syz-execprog 28041 250737 14770 0 3 0x4000082 thrsleep syz-execprog 28041 186420 14770 0 3 0x4000082 thrsleep syz-execprog 28041 167446 14770 0 3 0x4000082 thrsleep syz-execprog 28041 272081 14770 0 3 0x4000082 thrsleep syz-execprog 14770 165719 79225 0 3 0x10008a pause ksh 79225 207579 64823 0 3 0x92 select sshd 14212 405035 1 0 3 0x100083 ttyin getty 64823 242926 1 0 3 0x80 select sshd 86599 86068 40906 73 3 0x100090 kqread syslogd 40906 72804 1 0 3 0x100082 netio syslogd 55193 181636 1 77 2 0x100010 dhclient *95163 25462 1 0 7 0 dhclient 31656 62944 0 0 3 0x14200 pgzero zerothread 82458 157088 0 0 3 0x14200 aiodoned aiodoned 79772 80240 0 0 3 0x14200 syncer update 40103 517130 0 0 3 0x14200 cleaner cleaner 87885 364346 0 0 3 0x14200 reaper reaper 55646 311548 0 0 3 0x14200 pgdaemon pagedaemon 46092 248035 0 0 3 0x14200 bored crynlk 69992 488786 0 0 3 0x14200 bored crypto 46849 349385 0 0 3 0x40014200 acpi0 acpi0 52227 365100 0 0 2 0x14200 softnet 14294 128065 0 0 2 0x14200 systqmp 77060 123721 0 0 3 0x14200 bored systq 75472 336525 0 0 3 0x40014200 bored softclock 25579 225040 0 0 3 0x40014200 idle0 24699 255944 0 0 3 0x14200 bored smr 1 189880 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 6320K 6320K 78643K 10539 0 pcb 13 8K 8K 78643K 13 0 rtable 63 1K 2K 78643K 156 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 18 79K 79K 78643K 18 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 66 11K 12K 78643K 853 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 22 3545K 3609K 78643K 3027 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 96 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 280 5 0 5 1 0 1 1 0 8 1 tcpcb 640 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 1412 0 19 45 0 45 45 0 8 0 ffsino 240 1412 0 19 82 0 82 82 0 8 0 nchpl 144 1637 0 35 60 0 60 60 0 8 0 uvmvnodes 72 1421 0 0 26 0 26 26 0 8 0 vnodes 208 1421 0 0 75 0 75 75 0 8 0 namei 1024 3836 0 3836 1 0 1 1 0 8 1 scxspl 208 3981 0 3981 2 1 1 2 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 432 196 0 185 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 128 134 0 122 1 0 1 1 0 8 0 fdescpl 424 197 0 185 2 0 2 2 0 8 0 filepl 120 973 0 921 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 128 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 144 186 0 185 1 0 1 1 0 8 0 processpl 896 211 0 185 4 0 4 4 0 8 0 procpl 648 217 0 185 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 5481 0 5450 8 2 6 8 0 8 1 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9545 0 9468 11 4 7 7 0 8 0 bufpl 280 5783 0 1323 319 0 319 319 0 8 0 anonpl 16 21155 0 19719 15 2 13 13 0 62 6 amapchunkpl 152 832 0 773 5 0 5 5 0 158 2 amappl16 192 120 0 93 2 0 2 2 0 8 0 amappl14 176 48 0 40 1 0 1 1 0 8 0 amappl12 160 14 0 11 1 0 1 1 0 8 0 amappl11 152 44 0 33 1 0 1 1 0 8 0 amappl10 144 19 0 17 1 0 1 1 0 8 0 amappl9 136 388 0 386 1 0 1 1 0 8 0 amappl8 128 107 0 97 1 0 1 1 0 8 0 amappl7 120 29 0 26 1 0 1 1 0 8 0 amappl6 112 57 0 52 1 0 1 1 0 8 0 amappl5 104 137 0 128 1 0 1 1 0 8 0 amappl4 96 425 0 398 1 0 1 1 0 8 0 amappl3 88 117 0 111 1 0 1 1 0 8 0 amappl2 80 835 0 785 3 0 3 3 0 8 1 amappl1 72 13408 0 13024 26 8 18 20 0 8 8 amappl 80 436 0 411 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 24 197 0 185 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 197 0 185 1 0 1 1 0 8 0 vmmpekpl 168 6158 0 6141 1 0 1 1 0 8 0 vmmpepl 168 28806 0 27983 86 9 77 77 0 357 38 vmsppl 272 196 0 185 1 0 1 1 0 8 0 pdppl 4096 400 0 370 5 0 5 5 0 8 0 pvpl 32 104653 0 100969 113 0 113 113 0 265 80 pmappl 200 196 0 185 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 126 0 8 4 0 4 4 0 8 0 ddb>