kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Jul 24 10:34:36 PDT 2020 OpenBSD/amd64 (ci-openbsd-main-3.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts. 2020/07/24 10:34:54 parsed 1 programs 2020/07/24 10:34:59 executed programs: 0 login: panic: receive 1a: so 0xfffffd806974e190, so_type 3, m 0xfffffd8069fa1600, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *265532 91027 0 0 0 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff823cf924) at panic+0x15c soreceive(fffffd806974e190,0,ffff80001d6e4e38,0,0,ffff80001d6e4d44) at soreceive+0x170a soo_read(fffffd80699f74b0,ffff80001d6e4e38,0) at soo_read+0x53 dofilereadv(ffff80001d6a9008,6,ffff80001d6e4e38,0,ffff80001d6e4f20) at dofilereadv+0x1a1 sys_read(ffff80001d6a9008,ffff80001d6e4ed0,ffff80001d6e4f20) at sys_read+0x83 syscall(ffff80001d6e4fa0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffaa00, 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 1a: so 0xfffffd806974e190, so_type 3, m 0xfffffd8069fa1600, m_type 0 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff823cf924) at panic+0x15c soreceive(fffffd806974e190,0,ffff80001d6e4e38,0,0,ffff80001d6e4d44) at soreceive+0x170a soo_read(fffffd80699f74b0,ffff80001d6e4e38,0) at soo_read+0x53 dofilereadv(ffff80001d6a9008,6,ffff80001d6e4e38,0,ffff80001d6e4f20) at dofilereadv+0x1a1 sys_read(ffff80001d6a9008,ffff80001d6e4ed0,ffff80001d6e4f20) at sys_read+0x83 syscall(ffff80001d6e4fa0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffaa00, count: -8 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80001d6e4b80 rbx 0xffff80001d6e4c30 rdx 0x2 rcx 0 rax 0x1 r8 0xffffffff8228533f kprintf+0x15f r9 0x1 r10 0x2 r11 0xb5418cf280556876 r12 0x3000000008 r13 0xffff80001d6e4b90 r14 0x100 r15 0x1 rip 0xffffffff81cfcf18 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80001d6e4b70 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (dhclient) pid=265532 stat=onproc flags process=0 proc=0 pri=24, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6aa5f8,0xffff80001d6a9288 process=0xffff80001d6c4010 user=0xffff80001d6e0000, vmspace=0xfffffd806bc09110 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 49926 19929 53996 0 3 0x82 thrsleep syz-execprog 49926 10485 53996 0 3 0x4000082 thrsleep syz-execprog 49926 445050 53996 0 3 0x4000082 thrsleep syz-execprog 49926 126377 53996 0 3 0x4000082 thrsleep syz-execprog 49926 130027 53996 0 3 0x4000082 wait syz-execprog 49926 312092 53996 0 3 0x4000082 kqread syz-execprog 49926 124744 53996 0 3 0x4000082 thrsleep syz-execprog 53996 28 61764 0 3 0x10008a pause ksh 61764 249372 3927 0 3 0x92 select sshd 29220 392408 1 0 3 0x100083 ttyin getty 3927 367626 1 0 3 0x80 select sshd 8625 310251 34334 73 3 0x100090 kqread syslogd 34334 234277 1 0 3 0x100082 netio syslogd 23277 192993 1 77 2 0x100010 dhclient *91027 265532 1 0 7 0 dhclient 50304 521243 0 0 3 0x14200 bored smr 82337 408486 0 0 3 0x14200 pgzero zerothread 7203 193472 0 0 3 0x14200 aiodoned aiodoned 80876 44949 0 0 3 0x14200 syncer update 1826 131014 0 0 3 0x14200 cleaner cleaner 20935 136670 0 0 3 0x14200 reaper reaper 94383 499822 0 0 3 0x14200 pgdaemon pagedaemon 32967 357426 0 0 3 0x14200 bored crynlk 43590 85595 0 0 3 0x14200 bored crypto 91603 262546 0 0 3 0x40014200 acpi0 acpi0 93950 268948 0 0 2 0x14200 softnet 41368 244606 0 0 2 0x14200 systqmp 8151 271671 0 0 3 0x14200 bored systq 67912 167750 0 0 3 0x40014200 bored softclock 32719 338968 0 0 3 0x40014200 idle0 1 225932 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 10540 0 pcb 13 8K 8K 78643K 13 0 rtable 61 1K 2K 78643K 155 0 ifaddr 24 7K 9K 78643K 33 0 counters 19 16K 16K 78643K 20 0 ioctlops 0 0K 2K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1182 74K 74K 78643K 1187 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 1809 195K 288K 78643K 12938 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 67 11K 12K 78643K 843 0 UVM aobj 3 2K 2K 78643K 3 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 3845K 3909K 78643K 1630 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 12 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 296 27 0 21 1 0 1 1 0 8 0 nd6 48 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 144 0 0 9 0 9 9 0 8 0 art_table 32 145 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 dino2pl 256 1415 0 22 88 0 88 88 0 8 0 ffsino 240 1415 0 22 82 0 82 82 0 8 0 nchpl 144 1634 0 39 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 3941 0 3941 1 0 1 1 0 8 1 scxspl 192 4250 0 4250 1 0 1 1 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 424 212 0 186 4 0 4 4 0 8 0 knotepl 112 47 0 38 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipepl 272 70 0 64 1 0 1 1 0 8 0 fdescpl 432 198 0 186 2 0 2 2 0 8 0 filepl 120 980 0 929 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 57 0 50 1 0 1 1 0 8 0 zombiepl 144 187 0 186 1 0 1 1 0 8 0 processpl 928 212 0 186 4 0 4 4 0 8 0 procpl 624 218 0 186 3 0 3 3 0 8 0 sockpl 400 71 0 55 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5559 0 5531 6 2 4 6 0 8 0 mtagpl 96 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9765 0 9686 9 2 7 7 0 8 0 bufpl 280 2962 0 126 203 0 203 203 0 8 0 anonpl 16 20668 0 19176 14 2 12 12 0 107 3 amapchunkpl 152 746 0 686 4 0 4 4 0 158 1 amappl16 192 129 0 101 2 0 2 2 0 8 0 amappl15 184 4 0 2 1 0 1 1 0 8 0 amappl14 176 25 0 22 1 0 1 1 0 8 0 amappl13 168 20 0 18 1 0 1 1 0 8 0 amappl12 160 10 0 8 2 1 1 1 0 8 0 amappl11 152 40 0 30 1 0 1 1 0 8 0 amappl10 144 13 0 9 1 0 1 1 0 8 0 amappl9 136 213 0 212 1 0 1 1 0 8 0 amappl8 128 236 0 229 1 0 1 1 0 8 0 amappl7 120 105 0 92 1 0 1 1 0 8 0 amappl6 112 22 0 18 3 2 1 1 0 8 0 amappl5 104 152 0 143 1 0 1 1 0 8 0 amappl4 96 427 0 405 1 0 1 1 0 8 0 amappl3 88 106 0 101 1 0 1 1 0 8 0 amappl2 80 812 0 758 2 0 2 2 0 8 0 amappl1 72 13429 0 13035 23 6 17 17 0 8 7 amappl 80 427 0 402 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 2 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 6069 0 6046 2 0 2 2 0 8 0 vmmpepl 168 29317 0 28470 81 12 69 69 0 357 29 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 105129 0 101416 102 0 102 102 0 265 68 pmappl 200 197 0 186 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 215 0 6 6 0 6 6 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff823cf924) at panic+0x15c soreceive(fffffd806974e190,0,ffff80001d6e4e38,0,0,ffff80001d6e4d44) at soreceive+0x170a soo_read(fffffd80699f74b0,ffff80001d6e4e38,0) at soo_read+0x53 dofilereadv(ffff80001d6a9008,6,ffff80001d6e4e38,0,ffff80001d6e4f20) at dofilereadv+0x1a1 sys_read(ffff80001d6a9008,ffff80001d6e4ed0,ffff80001d6e4f20) at sys_read+0x83 syscall(ffff80001d6e4fa0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffaa00, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff823cf924) at panic+0x15c soreceive(fffffd806974e190,0,ffff80001d6e4e38,0,0,ffff80001d6e4d44) at soreceive+0x170a soo_read(fffffd80699f74b0,ffff80001d6e4e38,0) at soo_read+0x53 dofilereadv(ffff80001d6a9008,6,ffff80001d6e4e38,0,ffff80001d6e4f20) at dofilereadv+0x1a1 sys_read(ffff80001d6a9008,ffff80001d6e4ed0,ffff80001d6e4f20) at sys_read+0x83 syscall(ffff80001d6e4fa0) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffaa00, count: -8 ddb>