kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Nov 29 15:37:38 PST 2019 OpenBSD/amd64 (ci-openbsd-main-9.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.156' (ECDSA) to the list of known hosts. 2019/11/29 15:37:58 parsed 1 programs 2019/11/29 15:38:01 executed programs: 0 login: uvm_fault(0xffffffff82523810, 0xfffffd0000000008, 0, 1) -> e kernel: page fault trap, code=0 Stopped at soreceive+0x10f0: cmpq $0,0x8(%rbx) ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xffffffff82523810, 0xfffffd0000000008, 0, 1) -> e soreceive(fffffd8037021180,0,ffff800014886cf8,0,0,ffff800014886c04) at soreceive+0x10f0 end trace frame: 0xffff800014886c40, count: 0 ddb> trace soreceive(fffffd8037021180,0,ffff800014886cf8,0,0,ffff800014886c04) at soreceive+0x10f0 soo_read(fffffd8039dfb690,ffff800014886cf8,0) at soo_read+0x53 dofilereadv(ffff8000ffff8cb0,6,ffff800014886cf8,0,ffff800014886de0) at dofilereadv+0x1a2 sys_read(ffff8000ffff8cb0,ffff800014886d90,ffff800014886de0) at sys_read+0x83 syscall(ffff800014886e60) at syscall+0x507 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff3910, count: -6 ddb> show registers rdi 0 rsi 0 rbp 0xffff800014886be0 rbx 0xfffffd0000000000 rdx 0xffff800014886990 rcx 0x1000 __ALIGN_SIZE rax 0 r8 0 r9 0x3 r10 0x3d24ed6fb8799b75 r11 0xc2659bb77d0590 r12 0xb66 r13 0 r14 0 r15 0xfffffd8037021180 rip 0xffffffff81b1d0e0 soreceive+0x10f0 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff800014886af0 ss 0x10 soreceive+0x10f0: cmpq $0,0x8(%rbx) ddb> show proc PROC (dhclient) pid=430463 stat=onproc flags process=0 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff8a28,0xffff8000ffff8f48 process=0xffff8000ffff6390 user=0xffff800014881000, vmspace=0xfffffd803f012440 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 73854 199650 76603 0 3 0x82 thrsleep syz-execprog 73854 106500 76603 0 3 0x4000082 nanosleep syz-execprog 73854 125848 76603 0 3 0x4000082 thrsleep syz-execprog 73854 434251 76603 0 3 0x4000082 thrsleep syz-execprog 73854 250883 76603 0 3 0x4000082 wait syz-execprog 73854 425582 76603 0 3 0x4000082 thrsleep syz-execprog 73854 59787 76603 0 3 0x4000082 thrsleep syz-execprog 76603 500474 11259 0 3 0x10008a pause ksh 11259 503547 46021 0 3 0x92 select sshd 64476 124728 1 0 3 0x100083 ttyin getty 46021 260075 1 0 3 0x80 select sshd 55083 57506 87648 73 3 0x100090 kqread syslogd 87648 275667 1 0 3 0x100082 netio syslogd 53041 76237 1 77 2 0x100010 dhclient * 2397 430463 1 0 7 0 dhclient 15585 450290 0 0 3 0x14200 pgzero zerothread 99545 288800 0 0 3 0x14200 aiodoned aiodoned 79507 26714 0 0 3 0x14200 syncer update 20077 91400 0 0 3 0x14200 cleaner cleaner 93384 489488 0 0 3 0x14200 reaper reaper 13664 96084 0 0 3 0x14200 pgdaemon pagedaemon 69226 425184 0 0 3 0x14200 bored crynlk 68391 280030 0 0 3 0x14200 bored crypto 94704 500823 0 0 3 0x40014200 acpi0 acpi0 58697 420467 0 0 2 0x14200 softnet 82392 173149 0 0 2 0x14200 systqmp 64477 17488 0 0 3 0x14200 bored systq 24090 217917 0 0 2 0x40014200 softclock 63186 306056 0 0 3 0x40014200 idle0 29181 113901 0 0 3 0x14200 bored smr 1 333581 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 10539 0 pcb 13 8K 8K 78643K 13 0 rtable 63 1K 2K 78643K 155 0 ifaddr 24 7K 9K 78643K 33 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1180 74K 74K 78643K 1185 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 1794 195K 288K 78643K 12646 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 18 79K 79K 78643K 18 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 68 11K 12K 78643K 840 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 3 0K 0K 78643K 6 0 temp 22 3545K 3609K 78643K 3029 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 96 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 11 1 0 1 1 0 8 0 unpcb 120 27 0 19 1 0 1 1 0 8 0 syncache 280 5 0 5 1 0 1 1 0 8 1 tcpcb 640 8 0 5 1 0 1 1 0 8 0 inpcb 280 27 0 21 1 0 1 1 0 8 0 nd6 48 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 167 0 0 11 0 11 11 0 8 0 art_table 32 168 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 1412 0 20 45 0 45 45 0 8 0 ffsino 240 1412 0 20 82 0 82 82 0 8 0 nchpl 144 1637 0 38 60 0 60 60 0 8 0 uvmvnodes 72 1421 0 0 26 0 26 26 0 8 0 vnodes 208 1421 0 0 75 0 75 75 0 8 0 namei 1024 3838 0 3838 1 0 1 1 0 8 1 scxspl 208 3986 0 3986 2 1 1 2 0 8 1 plimitpl 152 14 0 8 1 0 1 1 0 8 0 sigapl 432 196 0 185 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 128 134 0 122 2 1 1 1 0 8 0 fdescpl 424 197 0 185 2 0 2 2 0 8 0 filepl 120 974 0 922 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 128 18 0 9 1 0 1 1 0 8 0 pgrppl 48 18 0 9 1 0 1 1 0 8 0 ucredpl 96 47 0 40 1 0 1 1 0 8 0 zombiepl 144 186 0 185 2 1 1 1 0 8 0 processpl 896 211 0 185 4 0 4 4 0 8 0 procpl 648 217 0 185 3 0 3 3 0 8 0 sockpl 384 71 0 55 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 5475 0 5447 7 3 4 7 0 8 0 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9490 0 9411 9 2 7 7 0 8 0 bufpl 280 5785 0 1323 319 0 319 319 0 8 0 anonpl 16 19988 0 18550 15 2 13 13 0 62 6 amapchunkpl 152 780 0 721 5 0 5 5 0 158 2 amappl16 192 121 0 94 2 0 2 2 0 8 0 amappl14 176 46 0 41 1 0 1 1 0 8 0 amappl12 160 8 0 4 1 0 1 1 0 8 0 amappl11 152 54 0 41 1 0 1 1 0 8 0 amappl10 144 12 0 9 1 0 1 1 0 8 0 amappl9 136 390 0 388 1 0 1 1 0 8 0 amappl8 128 108 0 99 1 0 1 1 0 8 0 amappl7 120 28 0 25 1 0 1 1 0 8 0 amappl6 112 53 0 47 1 0 1 1 0 8 0 amappl5 104 147 0 135 1 0 1 1 0 8 0 amappl4 96 421 0 399 1 0 1 1 0 8 0 amappl3 88 116 0 111 1 0 1 1 0 8 0 amappl2 80 846 0 792 4 1 3 3 0 8 1 amappl1 72 13363 0 12974 26 8 18 20 0 8 8 amappl 80 416 0 391 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 24 197 0 185 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 197 0 185 1 0 1 1 0 8 0 vmmpekpl 168 6147 0 6130 1 0 1 1 0 8 0 vmmpepl 168 28592 0 27758 89 12 77 77 0 357 38 vmsppl 272 196 0 185 1 0 1 1 0 8 0 pdppl 4096 400 0 370 5 0 5 5 0 8 0 pvpl 32 103449 0 99746 115 2 113 113 0 265 81 pmappl 200 196 0 185 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 123 0 7 4 0 4 4 0 8 0 ddb>