kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Thu Nov 14 23:50:54 PST 2019 OpenBSD/amd64 (ci-openbsd-multicore-7.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.29' (ECDSA) to the list of known hosts. 2019/11/14 23:51:05 parsed 1 programs 2019/11/14 23:51:11 executed programs: 0 login: panic: receive 3: so 0xfffffd806f6cf180, so_type 3, m 0xfffffd806d751500, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *402191 97289 0 0 0 0K dhclient 429351 43182 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x18 panic() at panic+0x15c soreceive(fffffd806f6cf180,0,ffff800020aa5188,0,0,ffff800020aa5094) at soreceive+0x1727 soo_read(fffffd80719fc558,ffff800020aa5188,0) at soo_read+0x53 dofilereadv(ffff800020a5f3c8,6,ffff800020aa5188,0,ffff800020aa5270) at dofilereadv+0x1a2 sys_read(ffff800020a5f3c8,ffff800020aa5220,ffff800020aa5270) at sys_read+0x83 syscall(ffff800020aa52f0) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffef670, 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 0xfffffd806f6cf180, so_type 3, m 0xfffffd806d751500, m_type 0 ddb{0}> trace db_enter() at db_enter+0x18 panic() at panic+0x15c soreceive(fffffd806f6cf180,0,ffff800020aa5188,0,0,ffff800020aa5094) at soreceive+0x1727 soo_read(fffffd80719fc558,ffff800020aa5188,0) at soo_read+0x53 dofilereadv(ffff800020a5f3c8,6,ffff800020aa5188,0,ffff800020aa5270) at dofilereadv+0x1a2 sys_read(ffff800020a5f3c8,ffff800020aa5220,ffff800020aa5270) at sys_read+0x83 syscall(ffff800020aa52f0) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffef670, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020aa4ed0 rbx 0xffff800020aa4f80 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81c1ab0f kprintf+0x16f r9 0x1 r10 0x2fa36030f898be75 r11 0x1c1253078b1e2257 r12 0x3000000008 r13 0xffff800020aa4ee0 r14 0x100 r15 0x1 rip 0xffffffff81406fc8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020aa4ec0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (dhclient) pid=402191 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020a5e4f8,0xffff800020a5f650 process=0xffff800020a8a710 user=0xffff800020aa0000, vmspace=0xfffffd807f007730 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 59550 419686 36260 0 3 0x82 thrsleep syz-execprog 59550 29575 36260 0 3 0x4000082 nanosleep syz-execprog 59550 246848 36260 0 3 0x4000082 thrsleep syz-execprog 59550 445758 36260 0 3 0x4000082 thrsleep syz-execprog 59550 486990 36260 0 3 0x4000082 thrsleep syz-execprog 59550 478891 36260 0 3 0x4000082 nanosleep syz-execprog 59550 302680 36260 0 3 0x4000082 thrsleep syz-execprog 59550 261100 36260 0 3 0x4000082 wait syz-execprog 36260 424559 75113 0 3 0x10008a pause ksh 75113 149040 64089 0 3 0x92 select sshd 69329 383854 1 0 3 0x100083 ttyin getty 64089 426642 1 0 3 0x80 select sshd 9874 390769 10523 74 3 0x100092 bpf pflogd 10523 360284 1 0 3 0x80 netio pflogd 96036 346968 45852 73 3 0x100090 kqread syslogd 45852 497845 1 0 3 0x100082 netio syslogd 45130 101901 1 77 3 0x100090 poll dhclient *97289 402191 1 0 7 0 dhclient 14976 123136 0 0 3 0x14200 pgzero zerothread 45189 418155 0 0 3 0x14200 aiodoned aiodoned 49217 474837 0 0 3 0x14200 syncer update 19230 78347 0 0 3 0x14200 cleaner cleaner 43182 429351 0 0 7 0x14200 reaper 62665 340105 0 0 3 0x14200 pgdaemon pagedaemon 74920 115789 0 0 3 0x14200 bored crynlk 5961 175511 0 0 3 0x14200 bored crypto 61334 58807 0 0 3 0x40014200 acpi0 acpi0 26339 429773 0 0 3 0x40014200 idle1 13011 497221 0 0 3 0x14200 bored softnet 31884 480837 0 0 3 0x14200 bored systqmp 28036 90160 0 0 3 0x14200 bored systq 10712 7042 0 0 3 0x40014200 bored softclock 30860 72722 0 0 3 0x40014200 idle0 28285 256931 0 0 3 0x14200 bored smr 1 192248 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex pvpl r = 0 (0xffffffff82658a70) #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 97289 (dhclient) thread 0xffff800020a5f3c8 (402191) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82656068) #0 witness_lock+0x52e #1 solock+0x66 #2 soreceive+0x114 #3 soo_read+0x53 #4 dofilereadv+0x1a2 #5 sys_read+0x83 #6 syscall+0x4a4 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9461 6393K 6395K 78643K 10556 0 0 pcb 13 8K 8K 78643K 13 0 0 rtable 63 2K 2K 78643K 165 0 0 ifaddr 30 8K 9K 78643K 39 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1468 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1181 74K 74K 78643K 1186 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 1K 78643K 2 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1809 196K 290K 78643K 12766 0 0 file desc 1 0K 12K 78643K 18 0 0 proc 59 63K 83K 78643K 398 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 in_multi 11 0K 1K 78643K 22 0 0 ether_multi 1 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 18 79K 79K 78643K 18 0 0 exec 0 0K 1K 78643K 197 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 70 11K 12K 78643K 948 0 0 UVM aobj 2 2K 2K 78643K 2 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 4 0K 0K 78643K 7 0 0 temp 28 3537K 3601K 78643K 3291 0 0 SYN cache 2 16K 16K 78643K 2 0 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 11 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 11 0 0 1 0 1 1 0 8 0 pfstkey 112 11 0 0 1 0 1 1 0 8 0 pfstate 328 11 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 47 11 0 11 11 0 8 2 art_table 32 169 0 47 2 0 2 2 0 8 0 art_node 16 33 0 12 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1421 0 20 46 0 46 46 0 8 0 ffsino 272 1421 0 20 94 0 94 94 0 8 0 nchpl 144 1660 0 52 60 0 60 60 0 8 0 uvmvnodes 72 1431 0 0 27 0 27 27 0 8 0 vnodes 208 1431 0 0 76 0 76 76 0 8 0 namei 1024 4130 0 4130 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4077 0 4077 2 1 1 2 0 8 1 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 432 224 0 212 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 488 225 0 212 3 0 3 3 0 8 0 filepl 152 1113 0 1059 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 144 212 0 211 1 0 1 1 0 8 0 processpl 896 240 0 211 4 0 4 4 0 8 0 procpl 632 247 0 211 4 0 4 4 0 8 1 srpgc 64 2 0 2 1 0 1 1 0 8 1 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 56 0 0 7 0 7 7 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 121 0 0 8 0 8 8 0 8 0 bufpl 256 5882 0 1310 286 0 286 286 0 8 0 anonpl 16 21952 0 20393 14 1 13 13 0 124 5 amapchunkpl 152 829 0 764 5 0 5 5 0 158 2 amappl16 192 133 0 109 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 54 0 46 1 0 1 1 0 8 0 amappl12 160 15 0 12 1 0 1 1 0 8 0 amappl11 152 58 0 43 1 0 1 1 0 8 0 amappl10 144 15 0 12 1 0 1 1 0 8 0 amappl9 136 433 0 431 1 0 1 1 0 8 0 amappl8 128 128 0 116 1 0 1 1 0 8 0 amappl7 120 36 0 32 1 0 1 1 0 8 0 amappl6 112 58 0 51 1 0 1 1 0 8 0 amappl5 104 126 0 113 1 0 1 1 0 8 0 amappl4 96 492 0 465 1 0 1 1 0 8 0 amappl3 88 117 0 111 1 0 1 1 0 8 0 amappl2 80 940 0 879 3 0 3 3 0 8 1 amappl1 72 15398 0 14995 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 24 225 0 212 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 225 0 212 1 0 1 1 0 8 0 vmmpekpl 168 6385 0 6361 2 0 2 2 0 8 0 vmmpepl 168 32449 0 31560 85 6 79 79 0 357 37 vmsppl 368 224 0 211 2 0 2 2 0 8 0 pdppl 4096 457 0 422 6 0 6 6 0 8 1 pvpl 32 112543 0 108655 115 0 115 115 0 265 82 pmappl 232 224 0 211 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 425 0 3 13 0 13 13 0 8 0 ddb{0}>