kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Mon Apr 6 11:33:27 PDT 2020 OpenBSD/amd64 (ci-openbsd-multicore-3.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.159' (ECDSA) to the list of known hosts. 2020/04/06 11:33:37 parsed 1 programs 2020/04/06 11:33:43 executed programs: 0 login: panic: receive 3: so 0xfffffd806f6f84b0, so_type 3, m 0xfffffd807f01e800, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *265803 12224 0 0 0 0K dhclient 384717 96834 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x18 panic(ffffffff821d49a6) at panic+0x15c soreceive(fffffd806f6f84b0,0,ffff800020ead148,0,0,ffff800020ead054) at soreceive+0x1727 soo_read(fffffd80749eb1c8,ffff800020ead148,0) at soo_read+0x53 dofilereadv(ffff800020e6d118,6,ffff800020ead148,0,ffff800020ead230) at dofilereadv+0x1a1 sys_read(ffff800020e6d118,ffff800020ead1e0,ffff800020ead230) at sys_read+0x83 syscall(ffff800020ead2b0) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9a30, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic receive 3: so 0xfffffd806f6f84b0, so_type 3, m 0xfffffd807f01e800, m_type 0 ddb{0}> trace db_enter() at db_enter+0x18 panic(ffffffff821d49a6) at panic+0x15c soreceive(fffffd806f6f84b0,0,ffff800020ead148,0,0,ffff800020ead054) at soreceive+0x1727 soo_read(fffffd80749eb1c8,ffff800020ead148,0) at soo_read+0x53 dofilereadv(ffff800020e6d118,6,ffff800020ead148,0,ffff800020ead230) at dofilereadv+0x1a1 sys_read(ffff800020e6d118,ffff800020ead1e0,ffff800020ead230) at sys_read+0x83 syscall(ffff800020ead2b0) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9a30, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020eace90 rbx 0xffff800020eacf40 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff821b427f kprintf+0x16f r9 0x1 r10 0x3937e450531cdb37 r11 0x8ceff0379dae4f42 r12 0x3000000008 r13 0xffff800020eacea0 r14 0x100 r15 0x1 rip 0xffffffff816b4168 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020eace80 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (dhclient) pid=265803 stat=onproc flags process=0 proc=0 pri=24, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e6c758,0xffff800020e6d398 process=0xffff800020e80f70 user=0xffff800020ea8000, vmspace=0xfffffd807efff000 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 13268 316532 42474 0 3 0x82 thrsleep syz-execprog 13268 431919 42474 0 3 0x4000082 thrsleep syz-execprog 13268 109195 42474 0 3 0x4000082 thrsleep syz-execprog 13268 445428 42474 0 3 0x4000082 thrsleep syz-execprog 13268 428738 42474 0 3 0x4000082 thrsleep syz-execprog 13268 250101 42474 0 3 0x4000082 wait syz-execprog 13268 233836 42474 0 3 0x4000082 thrsleep syz-execprog 13268 58176 42474 0 3 0x4000082 kqread syz-execprog 42474 514035 22297 0 3 0x10008a pause ksh 22297 485310 92679 0 3 0x92 select sshd 16786 52653 1 0 3 0x100083 ttyin getty 92679 77418 1 0 3 0x80 select sshd 44475 356312 39517 74 3 0x100092 bpf pflogd 39517 74110 1 0 3 0x80 netio pflogd 57871 346970 10911 73 3 0x100090 kqread syslogd 10911 287266 1 0 3 0x100082 netio syslogd 13683 293293 1 77 3 0x100090 poll dhclient *12224 265803 1 0 7 0 dhclient 42398 234624 0 0 3 0x14200 bored smr 85604 169378 0 0 3 0x14200 pgzero zerothread 51582 372842 0 0 3 0x14200 aiodoned aiodoned 26942 46073 0 0 3 0x14200 syncer update 46379 427464 0 0 3 0x14200 cleaner cleaner 96834 384717 0 0 7 0x14200 reaper 14866 394210 0 0 3 0x14200 pgdaemon pagedaemon 57809 425711 0 0 3 0x14200 bored crynlk 66384 62302 0 0 3 0x14200 bored crypto 5960 42161 0 0 3 0x40014200 acpi0 acpi0 47610 337997 0 0 3 0x40014200 idle1 47166 296038 0 0 3 0x14200 bored softnet 24109 195214 0 0 3 0x14200 bored systqmp 7101 353434 0 0 3 0x14200 bored systq 84307 153338 0 0 3 0x40014200 bored softclock 72619 368606 0 0 3 0x40014200 idle0 1 22518 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd807effe3b0) #0 witness_lock+0x4c5 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b #3 pmap_do_remove+0x88 #4 uvm_map_teardown+0x195 #5 uvmspace_free+0x86 #6 uvm_exit+0x29 #7 reaper+0x189 #8 proc_trampoline+0x1c Process 12224 (dhclient) thread 0xffff800020e6d118 (265803) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82672eb0) #0 witness_lock+0x4c5 #1 solock+0x66 #2 soreceive+0xb3a #3 soo_read+0x53 #4 dofilereadv+0x1a1 #5 sys_read+0x83 #6 syscall+0x4a4 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9462 6393K 6395K 78643K 10557 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 71 11K 12K 78643K 948 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 3033K 3097K 78643K 1911 0 kqueue 3 4K 4K 78643K 3 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 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 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 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 256 144 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 1 0 1 1 0 8 1 percpumem 16 31 0 1 1 0 1 1 0 8 0 scxspl 192 4488 0 4488 2 1 1 2 0 8 1 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 424 241 0 213 4 0 4 4 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 1 0 1 1 0 8 0 pipepl 120 148 0 139 1 0 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 1 0 1 1 0 8 0 processpl 984 241 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 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 56 0 0 7 0 7 7 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 114 0 0 7 0 7 7 0 8 0 bufpl 280 3744 0 173 256 0 256 256 0 8 0 anonpl 16 22234 0 20660 14 1 13 13 0 124 5 amapchunkpl 152 810 0 743 5 0 5 5 0 158 2 amappl16 192 147 0 119 2 0 2 2 0 8 0 amappl15 184 4 0 1 1 0 1 1 0 8 0 amappl14 176 6 0 4 2 1 1 1 0 8 0 amappl13 168 20 0 19 1 0 1 1 0 8 0 amappl12 160 5 0 5 2 1 1 1 0 8 1 amappl11 152 68 0 50 1 0 1 1 0 8 0 amappl10 144 16 0 14 1 0 1 1 0 8 0 amappl9 136 232 0 230 1 0 1 1 0 8 0 amappl8 128 266 0 259 1 0 1 1 0 8 0 amappl7 120 125 0 112 1 0 1 1 0 8 0 amappl6 112 24 0 21 1 0 1 1 0 8 0 amappl5 104 128 0 114 1 0 1 1 0 8 0 amappl4 96 511 0 484 1 0 1 1 0 8 0 amappl3 88 110 0 105 1 0 1 1 0 8 0 amappl2 80 931 0 872 3 0 3 3 0 8 1 amappl1 72 15447 0 15030 25 7 18 20 0 8 8 amappl 80 475 0 447 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 6237 0 6212 2 0 2 2 0 8 0 vmmpepl 168 32478 0 31577 83 3 80 80 0 357 36 vmsppl 368 225 0 212 2 0 2 2 0 8 0 pdppl 4096 460 0 424 6 0 6 6 0 8 0 pvpl 32 112276 0 108414 115 0 115 115 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 112 141 0 3 4 0 4 4 0 8 0 ddb{0}>