kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Mon Feb 17 18:03:20 PST 2020 OpenBSD/amd64 (ci-openbsd-multicore-8.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.174' (ECDSA) to the list of known hosts. 2020/02/17 18:03:49 parsed 1 programs 2020/02/17 18:03:55 executed programs: 0 login: panic: receive 1a: so 0xfffffd806f6f6000, so_type 3, m 0xfffffd807f01f600, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *110804 24219 0 0 0 1K dhclient 521528 62759 0 0x14000 0x200 0 reaper db_enter() at db_enter+0x18 panic(ffffffff821d4f7e) at panic+0x15c soreceive(fffffd806f6f6000,0,ffff800020abdc28,0,0,ffff800020abdb34) at soreceive+0x174a soo_read(fffffd80799b15f0,ffff800020abdc28,0) at soo_read+0x53 dofilereadv(ffff800020a7c008,6,ffff800020abdc28,0,ffff800020abdd10) at dofilereadv+0x1a1 sys_read(ffff800020a7c008,ffff800020abdcc0,ffff800020abdd10) at sys_read+0x83 syscall(ffff800020abdd90) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbf330, 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 receive 1a: so 0xfffffd806f6f6000, so_type 3, m 0xfffffd807f01f600, m_type 0 ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff821d4f7e) at panic+0x15c soreceive(fffffd806f6f6000,0,ffff800020abdc28,0,0,ffff800020abdb34) at soreceive+0x174a soo_read(fffffd80799b15f0,ffff800020abdc28,0) at soo_read+0x53 dofilereadv(ffff800020a7c008,6,ffff800020abdc28,0,ffff800020abdd10) at dofilereadv+0x1a1 sys_read(ffff800020a7c008,ffff800020abdcc0,ffff800020abdd10) at sys_read+0x83 syscall(ffff800020abdd90) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbf330, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020abd970 rbx 0xffff800020abda20 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81ff34ef kprintf+0x16f r9 0x1 r10 0xa306aaa39484b780 r11 0xeab7e01835bf398a r12 0x3000000008 r13 0xffff800020abd980 r14 0x100 r15 0x1 rip 0xffffffff81a26a68 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020abd960 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (dhclient) pid=110804 stat=onproc flags process=0 proc=0 pri=24, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020a7cea8,0xffff800020a7c768 process=0xffff800020a90790 user=0xffff800020ab8000, vmspace=0xfffffd807f000170 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 92311 117414 90436 0 3 0x82 thrsleep syz-execprog 92311 341474 90436 0 3 0x4000082 thrsleep syz-execprog 92311 206813 90436 0 3 0x4000082 thrsleep syz-execprog 92311 38189 90436 0 3 0x4000082 thrsleep syz-execprog 92311 342941 90436 0 2 0x4000082 syz-execprog 92311 78777 90436 0 3 0x4000082 thrsleep syz-execprog 92311 362189 90436 0 3 0x4000082 thrsleep syz-execprog 92311 178779 90436 0 3 0x4000082 wait syz-execprog 90436 190215 24049 0 3 0x10008a pause ksh 24049 102402 33024 0 3 0x92 select sshd 90893 241857 1 0 3 0x100083 ttyin getty 33024 388930 1 0 3 0x80 select sshd 11057 208473 80236 74 3 0x100092 bpf pflogd 80236 351137 1 0 3 0x80 netio pflogd 98006 314791 62615 73 2 0x100010 syslogd 62615 147593 1 0 3 0x100082 netio syslogd 74194 475622 1 77 2 0x100010 dhclient *24219 110804 1 0 7 0 dhclient 16948 53757 0 0 3 0x14200 pgzero zerothread 3575 220554 0 0 3 0x14200 aiodoned aiodoned 14734 494996 0 0 3 0x14200 syncer update 21211 260469 0 0 3 0x14200 cleaner cleaner 62759 521528 0 0 7 0x14200 reaper 47642 444129 0 0 3 0x14200 pgdaemon pagedaemon 34826 200152 0 0 3 0x14200 bored crynlk 67541 449359 0 0 3 0x14200 bored crypto 74106 229717 0 0 3 0x40014200 acpi0 acpi0 31459 519085 0 0 3 0x40014200 idle1 83393 42661 0 0 3 0x14200 bored softnet 52496 468776 0 0 3 0x14200 bored systqmp 33617 355276 0 0 3 0x14200 bored systq 53894 3363 0 0 3 0x40014200 bored softclock 43381 304000 0 0 3 0x40014200 idle0 95084 352270 0 0 3 0x14200 bored smr 1 457310 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 24219 (dhclient) thread 0xffff800020a7c008 (110804) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8267e270) #0 witness_lock+0x52e #1 solock+0x66 #2 soreceive+0x114 #3 soo_read+0x53 #4 dofilereadv+0x1a1 #5 sys_read+0x83 #6 syscall+0x4a4 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9461 6393K 6395K 78643K 10556 0 pcb 13 8K 8K 78643K 13 0 rtable 61 2K 2K 78643K 165 0 ifaddr 29 8K 9K 78643K 39 0 counters 39 33K 33K 78643K 41 0 ioctlops 0 0K 4K 78643K 1468 0 mount 1 1K 1K 78643K 1 0 vnodes 1183 74K 75K 78643K 1188 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 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 196K 290K 78643K 12766 0 file desc 1 0K 12K 78643K 18 0 proc 59 63K 83K 78643K 398 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 197 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 74 12K 12K 78643K 953 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 4 0K 0K 78643K 7 0 temp 24 3017K 3081K 78643K 1913 0 kqueue 3 4K 4K 78643K 3 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> 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 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 12 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 28 1 0 1 1 0 8 0 nd6 48 3 0 3 1 0 1 1 0 8 1 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 2 1 0 1 1 0 8 0 pfstkey 112 10 0 2 1 0 1 1 0 8 0 pfstate 328 10 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 256 144 0 48 9 0 9 9 0 8 3 art_table 32 145 0 48 2 0 2 2 0 8 1 art_node 16 33 0 13 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1423 0 20 46 0 46 46 0 8 0 ffsino 272 1423 0 20 94 0 94 94 0 8 0 nchpl 144 1649 0 38 60 0 60 60 0 8 0 uvmvnodes 72 1433 0 0 27 0 27 27 0 8 0 vnodes 208 1433 0 0 76 0 76 76 0 8 0 namei 1024 4126 0 4126 2 1 1 1 0 8 1 percpumem 16 31 0 1 1 0 1 1 0 8 0 scxspl 192 4629 0 4629 7 1 6 6 0 8 6 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 432 225 0 213 2 0 2 2 0 8 0 knotepl 112 39 0 30 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipelkpl 48 74 0 68 2 1 1 1 0 8 0 pipepl 120 148 0 139 2 1 1 1 0 8 0 fdescpl 496 226 0 213 3 0 3 3 0 8 0 filepl 152 1103 0 1050 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 144 213 0 212 2 1 1 1 0 8 0 processpl 960 241 0 212 5 0 5 5 0 8 1 procpl 624 248 0 212 3 0 3 3 0 8 0 sockpl 400 80 0 62 2 0 2 2 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 74 0 0 10 0 10 10 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 142 0 0 7 0 7 7 0 8 0 bufpl 280 3742 0 174 255 0 255 255 0 8 0 anonpl 16 22114 0 20526 15 2 13 13 0 124 5 amapchunkpl 152 871 0 804 5 0 5 5 0 158 1 amappl16 192 145 0 115 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 1 0 1 1 1 0 1 0 8 0 amappl13 168 22 0 20 2 1 1 1 0 8 0 amappl12 160 9 0 7 2 1 1 1 0 8 0 amappl11 152 69 0 51 1 0 1 1 0 8 0 amappl10 144 20 0 16 1 0 1 1 0 8 0 amappl9 136 231 0 229 1 0 1 1 0 8 0 amappl8 128 266 0 260 1 0 1 1 0 8 0 amappl7 120 115 0 103 1 0 1 1 0 8 0 amappl6 112 23 0 20 2 1 1 1 0 8 0 amappl5 104 131 0 116 1 0 1 1 0 8 0 amappl4 96 518 0 486 2 0 2 2 0 8 1 amappl3 88 112 0 106 1 0 1 1 0 8 0 amappl2 80 928 0 870 4 1 3 3 0 8 1 amappl1 72 15350 0 14936 26 8 18 20 0 8 8 amappl 80 476 0 448 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 24 226 0 213 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 226 0 213 1 0 1 1 0 8 0 vmmpekpl 168 6243 0 6216 2 0 2 2 0 8 0 vmmpepl 168 32648 0 31741 94 14 80 80 0 357 37 vmsppl 368 225 0 212 2 0 2 2 0 8 0 pdppl 4096 459 0 424 6 0 6 6 0 8 1 pvpl 32 112258 0 108367 121 6 115 115 0 265 81 pmappl 232 225 0 212 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 145 0 4 5 0 5 5 0 8 0 ddb{1}>