kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Wed Mar 4 21:46:36 PST 2020 OpenBSD/amd64 (ci-openbsd-setuid-4.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.162' (ECDSA) to the list of known hosts. executing program login: kernel: double fault trap, code=0 Stopped at __sanitizer_cov_trace_switch+0x15: pushq %r14 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace __sanitizer_cov_trace_switch(2,ffffffff8247dcf0) at __sanitizer_cov_trace_switch+0x15 sbappendaddr(fffffd806ec74648,fffffd806ec746d0,ffff800020afc1c8,fffffd806f3e3600,0) at sbappendaddr+0xf8 udp_sbappend(fffffd806f6e7118,fffffd806f3e3600,fffffd806f3e36b0,0,14,fffffd806f3e36c4) at udp_sbappend+0x314 udp_input(ffff800020afc448,ffff800020afc454,11,2) at udp_input+0x1320 ip_deliver(ffff800020afc448,ffff800020afc454,11,2) at ip_deliver+0x353 ip_ours(ffff800020afc448,ffff800020afc454,8b,0) at ip_ours+0x412 ip_input_if(ffff800020afc448,ffff800020afc454,4,0,ffff800000679800) at ip_input_if+0x6ce ipv4_input(ffff800000679800,fffffd806f3e3600) at ipv4_input+0x48 if_input_local(ffff800000679800,fffffd806f3e3600,2) at if_input_local+0xf9 ip_output(fffffd806f435d00,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 udp_output(fffffd806f6e7118,fffffd806f435d00,0,0) at udp_output+0x5af somove(fffffd806ec74648,2) at somove+0xf2f sorwakeup(fffffd806ec74648) at sorwakeup+0x79 udp_sbappend(fffffd806f6e7118,fffffd806f435d00,fffffd806f435db0,0,14,fffffd806f435dc4) at udp_sbappend+0x336 udp_input(ffff800020afcb38,ffff800020afcb44,11,2) at udp_input+0x1320 ip_deliver(ffff800020afcb38,ffff800020afcb44,11,2) at ip_deliver+0x353 ip_ours(ffff800020afcb38,ffff800020afcb44,8b,0) at ip_ours+0x412 ip_input_if(ffff800020afcb38,ffff800020afcb44,4,0,ffff800000679800) at ip_input_if+0x6ce ipv4_input(ffff800000679800,fffffd806f435d00) at ipv4_input+0x48 if_input_local(ffff800000679800,fffffd806f435d00,2) at if_input_local+0xf9 ip_output(fffffd806dcdc300,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 udp_output(fffffd806f6e7118,fffffd806dcdc300,0,0) at udp_output+0x5af somove(fffffd806ec74648,2) at somove+0xf2f sorwakeup(fffffd806ec74648) at sorwakeup+0x79 udp_sbappend(fffffd806f6e7118,fffffd806dcdc300,fffffd806dcdc3b0,0,14,fffffd806dcdc3c4) at udp_sbappend+0x336 udp_input(ffff800020afd228,ffff800020afd234,11,2) at udp_input+0x1320 ip_deliver(ffff800020afd228,ffff800020afd234,11,2) at ip_deliver+0x353 ip_ours(ffff800020afd228,ffff800020afd234,8b,0) at ip_ours+0x412 ip_input_if(ffff800020afd228,ffff800020afd234,4,0,ffff800000679800) at ip_input_if+0x6ce ipv4_input(ffff800000679800,fffffd806dcdc300) at ipv4_input+0x48 if_input_local(ffff800000679800,fffffd806dcdc300,2) at if_input_local+0xf9 ip_output(fffffd806dcdc900,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 udp_output(fffffd806f6e7118,fffffd806dcdc900,0,0) at udp_output+0x5af somove(fffffd806ec74648,2) at somove+0xf2f sorwakeup(fffffd806ec74648) at sorwakeup+0x79 udp_sbappend(fffffd806f6e7118,fffffd806dcdc900,fffffd806dcdc9b0,0,14,fffffd806dcdc9c4) at udp_sbappend+0x336 udp_input(ffff800020afd918,ffff800020afd924,11,2) at udp_input+0x1320 ip_deliver(ffff800020afd918,ffff800020afd924,11,2) at ip_deliver+0x353 ip_ours(ffff800020afd918,ffff800020afd924,8b,0) at ip_ours+0x412 ip_input_if(ffff800020afd918,ffff800020afd924,4,0,ffff800000679800) at ip_input_if+0x6ce ipv4_input(ffff800000679800,fffffd806dcdc900) at ipv4_input+0x48 if_input_local(ffff800000679800,fffffd806dcdc900,2) at if_input_local+0xf9 ip_output(fffffd806dcdc100,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 udp_output(fffffd806f6e7118,fffffd806dcdc100,0,0) at udp_output+0x5af somove(fffffd806ec74648,2) at somove+0xf2f sorwakeup(fffffd806ec74648) at sorwakeup+0x79 udp_sbappend(fffffd806f6e7118,fffffd806dcdc100,fffffd806dcdc1b0,0,14,fffffd806dcdc1c4) at udp_sbappend+0x336 udp_input(ffff800020afe008,ffff800020afe014,11,2) at udp_input+0x1320 ip_deliver(ffff800020afe008,ffff800020afe014,11,2) at ip_deliver+0x353 ip_ours(ffff800020afe008,ffff800020afe014,8b,0) at ip_ours+0x412 ip_input_if(ffff800020afe008,ffff800020afe014,4,0,ffff800000679800) at ip_input_if+0x6ce ipv4_input(ffff800000679800,fffffd806dcdc100) at ipv4_input+0x48 if_input_local(ffff800000679800,fffffd806dcdc100,2) at if_input_local+0xf9 ip_output(fffffd807f01e200,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 udp_output(fffffd806f6e7118,fffffd807f01e200,0,0) at udp_output+0x5af somove(fffffd806ec74648,2) at somove+0xf2f sorwakeup(fffffd806ec74648) at sorwakeup+0x79 udp_sbappend(fffffd806f6e7118,fffffd807f01e200,fffffd807f01e2b0,0,14,fffffd807f01e2c4) at udp_sbappend+0x336 udp_input(ffff800020afe6f8,ffff800020afe704,11,2) at udp_input+0x1320 ip_deliver(ffff800020afe6f8,ffff800020afe704,11,2) at ip_deliver+0x353 ip_ours(ffff800020afe6f8,ffff800020afe704,8b,0) at ip_ours+0x412 ip_input_if(ffff800020afe6f8,ffff800020afe704,4,0,ffff800000679800) at ip_input_if+0x6ce ipv4_input(ffff800000679800,fffffd807f01e200) at ipv4_input+0x48 if_input_local(ffff800000679800,fffffd807f01e200,2) at if_input_local+0xf9 ip_output(fffffd806f3cec00,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 udp_output(fffffd806f6e7118,fffffd806f3cec00,0,0) at udp_output+0x5af somove(fffffd806ec74648,2) at somove+0xf2f sorwakeup(fffffd806ec74648) at sorwakeup+0x79 udp_sbappend(fffffd806f6e7118,fffffd806f3cec00,fffffd806f3cecb0,0,14,fffffd806f3cecc4) at udp_sbappend+0x336 udp_input(ffff800020afede8,ffff800020afedf4,11,2) at udp_input+0x1320 ip_deliver(ffff800020afede8,ffff800020afedf4,11,2) at ip_deliver+0x353 ip_ours(ffff800020afede8,ffff800020afedf4,8b,0) at ip_ours+0x412 ip_input_if(ffff800020afede8,ffff800020afedf4,4,0,ffff800000679800) at ip_input_if+0x6ce ipv4_input(ffff800000679800,fffffd806f3cec00) at ipv4_input+0x48 if_input_local(ffff800000679800,fffffd806f3cec00,2) at if_input_local+0xf9 ip_output(fffffd807f01e700,0,fffffd806f6e7188,0,0,fffffd806f6e7118) at ip_output+0xae5 udp_output(fffffd806f6e7118,fffffd807f01e700,0,0) at udp_output+0x5af sosend(fffffd806ec74648,0,ffff800020aff160,0,0,4) at sosend+0x671 sendit(ffff800020ade9d0,4,ffff800020aff2c0,4,ffff800020aff3b0) at sendit+0x52b sys_sendmsg(ffff800020ade9d0,ffff800020aff368,ffff800020aff3b0) at sys_sendmsg+0x1a4 syscall(ffff800020aff430) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc3360, count: -82 ddb{0}> show registers rdi 0x2 rsi 0xffffffff8247dcf0 __sancov_gen_cov_switch_values.49 rbp 0xffff800020afc020 rbx 0x2 rdx 0xffff800020afc1c8 rcx 0xfffffd806f3e3600 rax 0xffffffff824fc5a8 inetdomain r8 0 r9 0xfffffd806f3e36c4 r10 0x61f76e0e26bb26aa r11 0x24e3da83fe72faa7 r12 0xfffffd806ec74648 r13 0xfffffd806ec746d0 r14 0x10 r15 0 rip 0xffffffff81dd53c5 __sanitizer_cov_trace_switch+0x15 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800020afc000 ss 0x10 __sanitizer_cov_trace_switch+0x15: pushq %r14 ddb{0}> show proc PROC (syz-executor0508) pid=499840 stat=onproc flags process=2 proc=0 pri=51, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020ade010,0xffff800020adec50 process=0xffff800020ac8018 user=0xffff800020afa000, vmspace=0xfffffd806eab6b88 estcpu=1, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 9143 522310 0 0 3 0x14200 bored sosplice * 1691 499840 4905 0 7 0x2 syz-executor0508 4905 174296 40550 0 3 0x10008a pause ksh 40550 409806 1285 0 3 0x92 select sshd 3765 324520 1 0 3 0x100083 ttyin getty 1285 391735 1 0 3 0x80 select sshd 15676 378061 59930 73 3 0x100090 kqread syslogd 59930 190516 1 0 3 0x100082 netio syslogd 77351 58457 1 77 3 0x100090 poll dhclient 55252 438807 1 0 3 0x80 poll dhclient 83843 217506 0 0 3 0x14200 bored smr 51716 282936 0 0 3 0x14200 pgzero zerothread 92252 505552 0 0 3 0x14200 aiodoned aiodoned 86844 101580 0 0 3 0x14200 syncer update 43755 370577 0 0 3 0x14200 cleaner cleaner 10959 291226 0 0 3 0x14200 reaper reaper 40030 29467 0 0 3 0x14200 pgdaemon pagedaemon 66864 238911 0 0 3 0x14200 bored crynlk 82997 161702 0 0 3 0x14200 bored crypto 50075 24246 0 0 3 0x40014200 acpi0 acpi0 1700 83287 0 0 7 0x40014200 idle1 51183 375318 0 0 3 0x14200 bored softnet 21063 274856 0 0 3 0x14200 bored systqmp 65024 234200 0 0 3 0x14200 bored systq 70690 149393 0 0 3 0x40014200 bored softclock 81377 472294 0 0 3 0x40014200 idle0 1 121496 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 1691 (syz-executor0508) thread 0xffff800020ade9d0 (499840) exclusive rwlock netlock r = 0 (0xffffffff824f1378) #0 witness_lock+0x52e #1 solock+0x5a #2 sosend+0x559 #3 sendit+0x52b #4 sys_sendmsg+0x1a4 #5 syscall+0x4a4 #6 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9456 6326K 6327K 78643K 10547 0 pcb 13 8K 8K 78643K 13 0 rtable 61 2K 2K 78643K 117 0 ifaddr 24 7K 7K 78643K 24 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 2K 78643K 13 0 mount 1 1K 1K 78643K 1 0 vnodes 1182 74K 74K 78643K 1187 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 0K 78643K 1 0 proc 47 50K 58K 78643K 278 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 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 151 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 54 2K 3K 78643K 688 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 3 0 temp 18 3013K 3077K 78643K 1418 0 kqueue 2 2K 2K 78643K 2 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 2 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 15 0 13 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 120 27 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 24 0 17 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 1391 0 15 45 0 45 45 0 8 0 ffsino 272 1391 0 15 92 0 92 92 0 8 0 nchpl 144 1566 0 31 57 0 57 57 0 8 0 uvmvnodes 72 1400 0 0 26 0 26 26 0 8 0 vnodes 208 1400 0 0 74 0 74 74 0 8 0 namei 1024 3447 0 3447 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 2660 0 2660 2 1 1 2 0 8 1 plimitpl 152 13 0 8 1 0 1 1 0 8 0 sigapl 424 193 0 166 4 0 4 4 0 8 0 knotepl 112 5 0 0 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipelkpl 48 57 0 53 1 0 1 1 0 8 0 pipepl 120 114 0 107 1 0 1 1 0 8 0 fdescpl 496 177 0 166 2 0 2 2 0 8 0 filepl 152 826 0 781 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 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 144 166 0 166 1 0 1 1 0 8 1 processpl 960 193 0 166 4 0 4 4 0 8 0 procpl 624 193 0 166 3 0 3 3 0 8 0 sosppl 128 1 0 0 1 0 1 1 0 8 0 sockpl 400 66 0 49 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 78 0 0 5 0 5 5 0 8 0 bufpl 280 1765 0 70 122 0 122 122 0 8 0 anonpl 16 17360 0 16226 6 1 5 6 0 124 0 amapchunkpl 152 466 0 430 2 0 2 2 0 158 0 amappl16 192 68 0 64 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 12 0 11 1 0 1 1 0 8 0 amappl12 160 14 0 14 1 0 1 1 0 8 1 amappl11 152 57 0 45 1 0 1 1 0 8 0 amappl10 144 5 0 3 1 0 1 1 0 8 0 amappl9 136 205 0 204 1 0 1 1 0 8 0 amappl8 128 203 0 202 1 0 1 1 0 8 0 amappl7 120 76 0 68 1 0 1 1 0 8 0 amappl6 112 12 0 10 1 0 1 1 0 8 0 amappl5 104 171 0 162 1 0 1 1 0 8 0 amappl4 96 419 0 393 1 0 1 1 0 8 0 amappl3 88 99 0 93 1 0 1 1 0 8 0 amappl2 80 714 0 663 2 0 2 2 0 8 0 amappl1 72 12078 0 11690 14 4 10 14 0 8 0 amappl 80 354 0 335 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 24 177 0 166 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 177 0 166 1 0 1 1 0 8 0 vmmpekpl 168 5106 0 5085 1 0 1 1 0 8 0 vmmpepl 168 25623 0 24866 44 8 36 44 0 357 3 vmsppl 368 176 0 166 2 0 2 2 0 8 0 pdppl 4096 362 0 332 5 0 5 5 0 8 0 pvpl 32 70333 0 67589 26 0 26 26 0 265 3 pmappl 232 176 0 166 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 131 0 2 4 0 4 4 0 8 0