kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Tue Jan 14 23:43:43 PST 2020 OpenBSD/amd64 (ci-openbsd-multicore-2.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.10' (ECDSA) to the list of known hosts. 2020/01/14 23:43:53 parsed 1 programs 2020/01/14 23:43:56 executed programs: 0 login: panic: receive 1a: so 0xfffffd806f65b180, so_type 3, m 0xfffffd806f1ec500, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 35316 10131 0 0 0 1K dhclient 292751 51635 0 0x14000 0x200 0 reaper db_enter() at db_enter+0x18 panic(ffffffff821bd249) at panic+0x15c soreceive(fffffd806f65b180,0,ffff800020abd478,0,0,ffff800020abd384) at soreceive+0x174a soo_read(fffffd80755fc098,ffff800020abd478,0) at soo_read+0x53 dofilereadv(ffff800020a76c60,6,ffff800020abd478,0,ffff800020abd560) at dofilereadv+0x1a2 sys_read(ffff800020a76c60,ffff800020abd510,ffff800020abd560) at sys_read+0x83 syscall(ffff800020abd5e0) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffeef10, 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 1a: so 0xfffffd806f65b180, so_type 3, m 0xfffffd806f1ec500, m_type 0 ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff821bd249) at panic+0x15c soreceive(fffffd806f65b180,0,ffff800020abd478,0,0,ffff800020abd384) at soreceive+0x174a soo_read(fffffd80755fc098,ffff800020abd478,0) at soo_read+0x53 dofilereadv(ffff800020a76c60,6,ffff800020abd478,0,ffff800020abd560) at dofilereadv+0x1a2 sys_read(ffff800020a76c60,ffff800020abd510,ffff800020abd560) at sys_read+0x83 syscall(ffff800020abd5e0) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffeef10, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020abd1c0 rbx 0xffff800020abd270 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81a7ccbf kprintf+0x16f r9 0x1 r10 0x3c384bb3ca119591 r11 0x7f9d05e41e918105 r12 0x3000000008 r13 0xffff800020abd1d0 r14 0x100 r15 0x1 rip 0xffffffff81835968 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020abd1b0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (dhclient) pid=35316 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020a769e8,0xffff800020a773d8 process=0xffff800020aa2a90 user=0xffff800020ab8000, vmspace=0xfffffd807efff2e0 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 80875 415018 17533 0 3 0x82 thrsleep syz-execprog 80875 215948 17533 0 3 0x4000082 nanosleep syz-execprog 80875 205107 17533 0 3 0x4000082 thrsleep syz-execprog 80875 356461 17533 0 3 0x4000082 thrsleep syz-execprog 80875 428645 17533 0 3 0x4000082 thrsleep syz-execprog 80875 255567 17533 0 3 0x4000082 thrsleep syz-execprog 80875 79249 17533 0 3 0x4000082 thrsleep syz-execprog 80875 472930 17533 0 3 0x4000082 kqread syz-execprog 80875 325487 17533 0 3 0x4000082 wait syz-execprog 17533 386292 29303 0 3 0x10008a pause ksh 29303 240888 11226 0 3 0x92 select sshd 79898 195823 1 0 3 0x100083 ttyin getty 11226 2236 1 0 3 0x80 select sshd 26881 82179 655 74 3 0x100092 bpf pflogd 655 107488 1 0 3 0x80 netio pflogd 65214 32793 49113 73 3 0x100090 kqread syslogd 49113 37338 1 0 3 0x100082 netio syslogd 98389 350223 1 77 3 0x100090 poll dhclient *10131 35316 1 0 7 0 dhclient 45575 512629 0 0 3 0x14200 pgzero zerothread 54959 341718 0 0 3 0x14200 aiodoned aiodoned 13696 201911 0 0 3 0x14200 syncer update 31111 335766 0 0 3 0x14200 cleaner cleaner 51635 292751 0 0 7 0x14200 reaper 22597 379775 0 0 3 0x14200 pgdaemon pagedaemon 75901 106599 0 0 3 0x14200 bored crynlk 91246 222486 0 0 3 0x14200 bored crypto 46579 334166 0 0 3 0x40014200 acpi0 acpi0 72575 225153 0 0 3 0x40014200 idle1 47993 128835 0 0 3 0x14200 bored softnet 88037 156122 0 0 3 0x14200 bored systqmp 81482 176319 0 0 3 0x14200 bored systq 199 81582 0 0 3 0x40014200 bored softclock 33934 300840 0 0 3 0x40014200 idle0 52757 208006 0 0 3 0x14200 bored smr 1 128938 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &(curpg)->mdpage.pv_mtx r = 0 (0xfffffd80075998b8) #0 witness_lock+0x52e #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b #3 pmap_remove_ptes+0x233 #4 pmap_do_remove+0x401 #5 uvm_map_teardown+0x195 #6 uvmspace_free+0x86 #7 uvm_exit+0x29 #8 reaper+0x189 #9 proc_trampoline+0x1c exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd807effe668) #0 witness_lock+0x52e #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 10131 (dhclient) thread 0xffff800020a76c60 (35316) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82647c90) #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{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 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 77 12K 12K 78643K 965 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 3005K 3069K 78643K 3317 0 kqueue 3 4K 4K 78643K 3 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 256 166 0 47 11 0 11 11 0 8 2 art_table 32 167 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 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 4112 0 4112 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 30 1 0 1 1 0 8 0 kqueuepl 104 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 1137 0 1084 4 1 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 896 241 0 212 4 0 4 4 0 8 0 procpl 632 249 0 212 4 0 4 4 0 8 0 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 76 0 0 10 0 10 10 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 125 0 0 8 0 8 8 0 8 0 bufpl 280 5947 0 1340 330 0 330 330 0 8 0 anonpl 16 22480 0 20867 14 1 13 13 0 125 6 amapchunkpl 152 770 0 703 5 0 5 5 0 158 2 amappl16 192 77 0 49 2 0 2 2 0 8 0 amappl15 184 60 0 55 1 0 1 1 0 8 0 amappl14 176 27 0 24 1 0 1 1 0 8 0 amappl12 160 2 0 2 1 1 0 1 0 8 0 amappl11 152 53 0 38 1 0 1 1 0 8 0 amappl10 144 18 0 14 1 0 1 1 0 8 0 amappl9 136 437 0 434 1 0 1 1 0 8 0 amappl8 128 94 0 83 1 0 1 1 0 8 0 amappl7 120 99 0 88 1 0 1 1 0 8 0 amappl6 112 66 0 61 1 0 1 1 0 8 0 amappl5 104 134 0 121 1 0 1 1 0 8 0 amappl4 96 500 0 470 2 0 2 2 0 8 1 amappl3 88 123 0 116 1 0 1 1 0 8 0 amappl2 80 939 0 878 3 0 3 3 0 8 1 amappl1 72 15711 0 15289 25 7 18 21 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 24 226 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 6186 0 6164 2 0 2 2 0 8 0 vmmpepl 168 33183 0 32251 85 3 82 82 0 357 40 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 113094 0 109142 117 1 116 116 0 265 81 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 112 142 0 3 4 0 4 4 0 8 0 ddb{1}>