kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Thu Dec 19 12:26:22 PST 2019 OpenBSD/amd64 (ci-openbsd-multicore-1.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.10.59' (ECDSA) to the list of known hosts. 2019/12/19 12:26:38 parsed 1 programs 2019/12/19 12:26:42 executed programs: 0 login: panic: receive 3: so 0xfffffd806f670180, so_type 3, m 0xfffffd806f231600, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *283250 76548 0 0 0 1K dhclient 233741 42546 0 0x14000 0x200 0 reaper db_enter() at db_enter+0x18 panic(ffffffff821aecd7) at panic+0x15c soreceive(fffffd806f670180,0,ffff800020ab58e8,0,0,ffff800020ab57f4) at soreceive+0x1727 soo_read(fffffd807b0a67b8,ffff800020ab58e8,0) at soo_read+0x53 dofilereadv(ffff800020a6f3c8,6,ffff800020ab58e8,0,ffff800020ab59d0) at dofilereadv+0x1a2 sys_read(ffff800020a6f3c8,ffff800020ab5980,ffff800020ab59d0) at sys_read+0x83 syscall(ffff800020ab5a50) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8450, 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 3: so 0xfffffd806f670180, so_type 3, m 0xfffffd806f231600, m_type 0 ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff821aecd7) at panic+0x15c soreceive(fffffd806f670180,0,ffff800020ab58e8,0,0,ffff800020ab57f4) at soreceive+0x1727 soo_read(fffffd807b0a67b8,ffff800020ab58e8,0) at soo_read+0x53 dofilereadv(ffff800020a6f3c8,6,ffff800020ab58e8,0,ffff800020ab59d0) at dofilereadv+0x1a2 sys_read(ffff800020a6f3c8,ffff800020ab5980,ffff800020ab59d0) at sys_read+0x83 syscall(ffff800020ab5a50) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe8450, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020ab5630 rbx 0xffff800020ab56e0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff8147edbf kprintf+0x16f r9 0x1 r10 0x53a9a15026d091af r11 0xf36e49574753c33e r12 0x3000000008 r13 0xffff800020ab5640 r14 0x100 r15 0x1 rip 0xffffffff82061478 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020ab5620 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (dhclient) pid=283250 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020a6e280,0xffff800020a6f8c8 process=0xffff800020a9a720 user=0xffff800020ab0000, vmspace=0xfffffd807f008450 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 16635 253967 64519 0 3 0x82 wait syz-execprog 16635 522326 64519 0 3 0x4000082 nanosleep syz-execprog 16635 514064 64519 0 3 0x4000082 thrsleep syz-execprog 16635 385026 64519 0 3 0x4000082 thrsleep syz-execprog 16635 32650 64519 0 3 0x4000082 thrsleep syz-execprog 16635 299952 64519 0 3 0x4000082 thrsleep syz-execprog 16635 264297 64519 0 3 0x4000082 thrsleep syz-execprog 16635 240762 64519 0 3 0x4000082 nanosleep syz-execprog 64519 148749 53521 0 3 0x10008a pause ksh 53521 300476 43336 0 3 0x92 select sshd 4523 376602 1 0 3 0x100083 ttyin getty 43336 137670 1 0 3 0x80 select sshd 28317 308195 61989 74 3 0x100092 bpf pflogd 61989 313873 1 0 3 0x80 netio pflogd 61712 319776 57215 73 3 0x100090 kqread syslogd 57215 427813 1 0 3 0x100082 netio syslogd 29425 139686 1 77 2 0x100010 dhclient *76548 283250 1 0 7 0 dhclient 37769 238769 0 0 2 0x14200 zerothread 64451 508062 0 0 3 0x14200 aiodoned aiodoned 26471 387485 0 0 3 0x14200 syncer update 84829 67934 0 0 3 0x14200 cleaner cleaner 42546 233741 0 0 7 0x14200 reaper 26838 71368 0 0 3 0x14200 pgdaemon pagedaemon 21674 344066 0 0 3 0x14200 bored crynlk 36971 212373 0 0 3 0x14200 bored crypto 60660 396880 0 0 3 0x40014200 acpi0 acpi0 52351 106788 0 0 3 0x40014200 idle1 93576 320699 0 0 3 0x14200 bored softnet 96497 35163 0 0 2 0x14200 systqmp 64074 221598 0 0 3 0x14200 bored systq 17935 34426 0 0 3 0x40014200 bored softclock 75987 458748 0 0 3 0x40014200 idle0 25077 193970 0 0 3 0x14200 bored smr 1 146695 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex pvpl r = 0 (0xffffffff8262d5e8) #0 witness_lock+0x52e #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b #3 pool_put+0x64 #4 pmap_do_remove+0x61b #5 uvm_map_teardown+0x195 #6 uvmspace_free+0x86 #7 uvm_exit+0x29 #8 reaper+0x189 #9 proc_trampoline+0x1c Process 76548 (dhclient) thread 0xffff800020a6f3c8 (283250) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff826313f0) #0 witness_lock+0x52e #1 solock+0x66 #2 soreceive+0xb3a #3 soo_read+0x53 #4 dofilereadv+0x1a2 #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 67 2K 2K 78643K 167 0 ifaddr 31 8K 9K 78643K 39 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1468 0 mount 1 1K 1K 78643K 1 0 vnodes 1181 74K 74K 78643K 1186 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 18 79K 79K 78643K 18 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 81 12K 12K 78643K 969 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 28 3021K 3085K 78643K 3321 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 9 1 0 1 1 0 8 0 unpcb 120 29 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 34 0 28 1 0 1 1 0 8 0 nd6 48 2 0 2 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 0 1 0 1 1 0 8 0 pfstkey 112 10 0 0 1 0 1 1 0 8 0 pfstate 328 10 0 0 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 1424 0 20 46 0 46 46 0 8 0 ffsino 272 1424 0 20 94 0 94 94 0 8 0 nchpl 144 1650 0 38 60 0 60 60 0 8 0 uvmvnodes 72 1434 0 0 27 0 27 27 0 8 0 vnodes 208 1434 0 0 76 0 76 76 0 8 0 namei 1024 4157 0 4157 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4121 0 4121 2 1 1 2 0 8 1 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 28 1 0 1 1 0 8 0 kqueuepl 104 2 0 0 1 0 1 1 0 8 0 pipepl 160 148 0 138 1 0 1 1 0 8 0 fdescpl 488 226 0 213 3 0 3 3 0 8 0 filepl 152 1137 0 1083 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 1 0 1 1 0 8 0 processpl 904 241 0 212 4 0 4 4 0 8 0 procpl 632 248 0 212 4 0 4 4 0 8 1 srpgc 64 2 0 0 1 0 1 1 0 8 0 sockpl 384 80 0 62 2 0 2 2 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 75 0 0 10 0 10 10 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 135 0 0 8 0 8 8 0 8 0 bufpl 280 5946 0 1340 329 0 329 329 0 8 0 anonpl 16 22249 0 20631 14 1 13 13 0 125 5 amapchunkpl 152 779 0 718 5 0 5 5 0 158 1 amappl16 192 78 0 49 2 0 2 2 0 8 0 amappl15 184 59 0 55 1 0 1 1 0 8 0 amappl14 176 27 0 23 1 0 1 1 0 8 0 amappl12 160 12 0 10 1 0 1 1 0 8 0 amappl11 152 52 0 37 1 0 1 1 0 8 0 amappl10 144 9 0 7 1 0 1 1 0 8 0 amappl9 136 437 0 435 1 0 1 1 0 8 0 amappl8 128 90 0 80 1 0 1 1 0 8 0 amappl7 120 103 0 91 1 0 1 1 0 8 0 amappl6 112 65 0 59 1 0 1 1 0 8 0 amappl5 104 121 0 108 1 0 1 1 0 8 0 amappl4 96 495 0 467 1 0 1 1 0 8 0 amappl3 88 123 0 114 1 0 1 1 0 8 0 amappl2 80 946 0 884 3 0 3 3 0 8 1 amappl1 72 15279 0 14850 27 9 18 21 0 8 8 amappl 80 471 0 444 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 6197 0 6172 2 0 2 2 0 8 0 vmmpepl 168 33239 0 32291 91 9 82 82 0 357 38 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 112589 0 108680 116 0 116 116 0 265 82 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 112 146 0 3 5 0 5 5 0 8 0 ddb{1}>