kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Feb 15 06:32:28 PST 2019 OpenBSD/amd64 (ci-openbsd-main-0.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.146' (ECDSA) to the list of known hosts. executing program login: panic: timeout_add: to_ticks (-3) < 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 13566 56260 0 0x2 0 0 syz-executor4860 db_enter() at db_enter+0x18 panic() at panic+0x15c timeout_add(ffff800000669260,fffffffd) at timeout_add+0x179 pcppi_bell(ffff800000669200,2,fffffffd,1) at pcppi_bell+0x2a0 spkrioctl(1b00,20005302,ffff8000149943f0,2,ffff80001495c970) at spkrioctl+0x230 VOP_IOCTL(fffffd80355d2af8,20005302,ffff8000149943f0,2,fffffd803f7c7cc0,ffff80001495c970) at VOP_IOCTL+0x9a vn_ioctl(fffffd80361ed0f8,20005302,ffff8000149943f0,ffff80001495c970) at vn_ioctl+0xc9 sys_ioctl(ffff80001495c970,ffff800014994538,ffff800014994520) at sys_ioctl+0x62d syscall(ffff8000149945d0) at syscall+0x535 Xsyscall(6,0,7f7fffff9278,0,1,7f7fffff9288) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff9210, count: 5 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic timeout_add: to_ticks (-3) < 0 ddb> trace db_enter() at db_enter+24 panic() at panic+348 timeout_add(ffff800000669260,fffffffd) at timeout_add+377 pcppi_bell(ffff800000669200,2,fffffffd,1) at pcppi_bell+672 spkrioctl(1b00,20005302,ffff8000149943f0,2,ffff80001495c970) at spkrioctl+560 VOP_IOCTL(fffffd80355d2af8,20005302,ffff8000149943f0,2,fffffd803f7c7cc0,ffff80001495c970) at VOP_IOCTL+154 vn_ioctl(fffffd80361ed0f8,20005302,ffff8000149943f0,ffff80001495c970) at vn_ioctl+201 sys_ioctl(ffff80001495c970,ffff800014994538,ffff800014994520) at sys_ioctl+1581 syscall(ffff8000149945d0) at syscall+1333 Xsyscall(6,0,7f7fffff9278,0,1,7f7fffff9288) at Xsyscall+296 end of kernel end trace frame: 0x7f7fffff9210, count: -10 ddb> show registers rdi 0 rsi 1 rbp 18446603336566784016 rbx 18446603336566784192 rdx 2 rcx 1 rax 1 r8 18446603336566783952 r9 1 r10 13876670466647311139 r11 5030226113022487068 r12 206158430216 r13 18446603336566784032 r14 256 r15 1 rip 18446744071581504680 db_enter+24 cs 8 rflags 582 rsp 18446603336566784000 ss 16 db_enter+24: addq $8,%rsp ddb> show proc PROC (syz-executor4860) pid=13566 stat=onproc flags process=2 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff80001495cbc8,0xffffffff8225bc68 process=0xffff8000ffff73c0 user=0xffff80001498f000, vmspace=0xfffffd803f015318 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *56260 13566 54769 0 7 0x2 syz-executor4860 54769 431 32922 0 3 0x10008a pause ksh 32922 378116 56212 0 3 0x92 select sshd 68036 288015 1 0 3 0x100083 ttyin getty 56212 212455 1 0 3 0x80 select sshd 26979 330808 2736 73 3 0x100090 kqread syslogd 2736 3861 1 0 3 0x100082 netio syslogd 60513 479024 1 77 3 0x100090 poll dhclient 3630 463405 1 0 3 0x80 poll dhclient 79908 218124 0 0 3 0x14200 pgzero zerothread 839 265948 0 0 3 0x14200 aiodoned aiodoned 46333 241152 0 0 3 0x14200 syncer update 30333 133056 0 0 3 0x14200 cleaner cleaner 81465 495839 0 0 3 0x14200 reaper reaper 97284 121957 0 0 3 0x14200 pgdaemon pagedaemon 70777 234658 0 0 3 0x14200 bored crynlk 76182 85869 0 0 3 0x14200 bored crypto 73780 482216 0 0 3 0x40014200 acpi0 acpi0 13780 327339 0 0 3 0x14200 bored softnet 76673 129965 0 0 3 0x14200 bored systqmp 63974 117254 0 0 3 0x14200 bored systq 56745 301158 0 0 3 0x40014200 bored softclock 99825 391755 0 0 3 0x40014200 idle0 1 359647 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 Kern Lim devbuf 9427 6306K 6307K 78643K 10520 0 0 pcb 23 9K 9K 78643K 55 0 0 rtable 61 1K 2K 78643K 115 0 0 ifaddr 21 7K 7K 78643K 21 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 13 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1166 73K 73K 78643K 1172 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 0K 0K 78643K 2 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1777 193K 286K 78643K 12501 0 0 file desc 1 0K 0K 78643K 1 0 0 proc 40 30K 38K 78643K 207 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 in_multi 11 0K 0K 78643K 11 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 150 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 47 2K 3K 78643K 677 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 3 0K 0K 78643K 3 0 0 temp 30 2327K 2391K 78643K 1695 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 2 0 0 1 0 1 1 0 8 0 inpcbpl 280 22 0 16 1 0 1 1 0 8 0 plimitpl 152 13 0 8 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 syncache 264 5 0 5 2 1 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 96 0 0 6 0 6 6 0 8 0 art_table 32 97 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1383 0 18 45 0 45 45 0 8 0 ffsino 240 1383 0 18 81 0 81 81 0 8 0 nchpl 144 1555 0 30 57 0 57 57 0 8 0 uvmvnodes 72 1392 0 0 26 0 26 26 0 8 0 vnodes 200 1392 0 0 74 0 74 74 0 8 0 namei 1024 3262 0 3262 3 2 1 1 0 8 1 scxspl 192 2350 0 2350 9 8 1 6 0 8 1 sigapl 432 174 0 164 2 0 2 2 0 8 0 knotepl 112 5 0 0 1 0 1 1 0 8 0 kqueuepl 104 1 0 0 1 0 1 1 0 8 0 pipepl 112 114 0 107 3 2 1 1 0 8 0 fdescpl 424 175 0 164 2 0 2 2 0 8 0 filepl 120 808 0 765 2 0 2 2 0 8 0 lockfpl 104 7 0 6 2 1 1 1 0 8 0 lockfspl 32 4 0 3 2 1 1 1 0 8 0 sessionpl 112 17 0 9 1 0 1 1 0 8 0 pgrppl 48 17 0 9 1 0 1 1 0 8 0 ucredpl 96 47 0 40 1 0 1 1 0 8 0 zombiepl 144 164 0 164 3 2 1 1 0 8 1 processpl 840 188 0 164 4 1 3 4 0 8 0 procpl 600 188 0 164 3 0 3 3 0 8 0 sockpl 384 64 0 48 2 0 2 2 0 8 0 mcl4k 4096 10 0 10 2 1 1 1 0 8 1 mcl2k 2048 5648 0 5618 8 2 6 7 0 8 1 mtagpl 80 2 0 2 1 1 0 1 0 8 0 mbufpl 256 9740 0 9701 7 3 4 5 0 8 1 bufpl 256 1997 0 254 109 0 109 109 0 8 0 anonpl 16 17994 0 16909 9 3 6 7 0 62 1 amapchunkpl 152 571 0 536 2 0 2 2 0 158 0 amappl16 192 71 0 66 1 0 1 1 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 1 0 1 1 1 0 1 0 8 0 amappl13 168 15 0 12 1 0 1 1 0 8 0 amappl12 160 8 0 8 2 1 1 1 0 8 1 amappl11 152 177 0 168 1 0 1 1 0 8 0 amappl10 144 45 0 44 1 0 1 1 0 8 0 amappl9 136 162 0 161 1 0 1 1 0 8 0 amappl8 128 102 0 96 1 0 1 1 0 8 0 amappl7 120 32 0 28 1 0 1 1 0 8 0 amappl6 112 43 0 39 1 0 1 1 0 8 0 amappl5 104 229 0 218 1 0 1 1 0 8 0 amappl4 96 254 0 233 1 0 1 1 0 8 0 amappl3 88 112 0 107 1 0 1 1 0 8 0 amappl2 80 529 0 495 1 0 1 1 0 8 0 amappl1 72 11482 0 11096 16 7 9 16 0 8 0 amappl 72 392 0 373 1 0 1 1 0 75 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 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 175 0 164 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 175 0 164 1 0 1 1 0 8 0 vmmpekpl 168 5180 0 5165 1 0 1 1 0 8 0 vmmpepl 168 23523 0 22838 59 26 33 47 0 357 2 vmsppl 264 174 0 164 1 0 1 1 0 8 0 pdppl 4096 356 0 328 5 0 5 5 0 8 0 pvpl 32 70324 0 67623 38 12 26 26 0 265 1 pmappl 192 174 0 164 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 228 0 10 7 0 7 7 0 8 0 ddb>