kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Mon Dec 20 07:46:13 PST 2021 OpenBSD/amd64 (ci-openbsd-main-7.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.165' (ED25519) to the list of known hosts. executing program login: panic: kernel diagnostic assertion "suser(curproc) == 0" failed: file "/syzkaller/managers/main/kernel/sys/dev/dt/dt_dev.c", line 431 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND db_enter() at db_enter+0x18 panic(ffffffff824292db) at panic+0x161 __assert(ffffffff8249abe3,ffffffff824b8dae,1af,ffffffff8246aab5) at __assert+0x25 dt_ioctl_record_stop(ffff800000b2f300) at dt_ioctl_record_stop+0x165 dtclose(11e6e,1,2000,ffff80002165f7b0) at dtclose+0xc2 spec_close(ffff80002167da60) at spec_close+0x363 VOP_CLOSE(fffffd806d2e4bd0,1,fffffd807f7d8b40,ffff80002165f7b0) at VOP_CLOSE+0xde vn_closefile(fffffd806f9b0690,ffff80002165f7b0) at vn_closefile+0xd2 fdrop(fffffd806f9b0690,ffff80002165f7b0) at fdrop+0xc7 closef(fffffd806f9b0690,ffff80002165f7b0) at closef+0x117 fdfree(ffff80002165f7b0) at fdfree+0xf3 exit1(ffff80002165f7b0,0,0,1) at exit1+0x35d sys_exit(ffff80002165f7b0,ffff80002167dcf0,ffff80002167dd50) at sys_exit+0x16 syscall(ffff80002167ddc0) at syscall+0x44e end trace frame: 0xffff80002167de40, count: 0 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 *cpu0: kernel diagnostic assertion "suser(curproc) == 0" failed: file "/syzkaller/managers/main/kernel/sys/dev/dt/dt_dev.c", line 431 ddb> trace db_enter() at db_enter+0x18 panic(ffffffff824292db) at panic+0x161 __assert(ffffffff8249abe3,ffffffff824b8dae,1af,ffffffff8246aab5) at __assert+0x25 dt_ioctl_record_stop(ffff800000b2f300) at dt_ioctl_record_stop+0x165 dtclose(11e6e,1,2000,ffff80002165f7b0) at dtclose+0xc2 spec_close(ffff80002167da60) at spec_close+0x363 VOP_CLOSE(fffffd806d2e4bd0,1,fffffd807f7d8b40,ffff80002165f7b0) at VOP_CLOSE+0xde vn_closefile(fffffd806f9b0690,ffff80002165f7b0) at vn_closefile+0xd2 fdrop(fffffd806f9b0690,ffff80002165f7b0) at fdrop+0xc7 closef(fffffd806f9b0690,ffff80002165f7b0) at closef+0x117 fdfree(ffff80002165f7b0) at fdfree+0xf3 exit1(ffff80002165f7b0,0,0,1) at exit1+0x35d sys_exit(ffff80002165f7b0,ffff80002167dcf0,ffff80002167dd50) at sys_exit+0x16 syscall(ffff80002167ddc0) at syscall+0x44e Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff5e00, count: -15 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002167d880 rbx 0 rdx 0x3fd rcx 0 rax 0x86 r8 0x101010101010101 r9 0x8080808080808080 r10 0x200f5057a89bfd5b r11 0x3c53bd8ed4d6d543 r12 0 r13 0xffff800000b2f300 r14 0 r15 0x1 rip 0xffffffff8103e808 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002167d870 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor2570) pid=386896 stat=onproc flags process=1a proc=2000 pri=17, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80002165e010,0xffffffff828bf260 process=0xffff800021641b68 user=0xffff800021678000, vmspace=0xfffffd807f018440 estcpu=0, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 66453 478579 27393 0 3 0x10008a sigsusp ksh 27393 78882 59754 0 3 0x9a poll sshd 41640 91748 1 0 3 0x100083 ttyin getty 59754 163893 1 0 3 0x88 poll sshd 18670 3786 91641 73 3 0x100090 kqread syslogd 91641 39602 1 0 3 0x100082 netio syslogd 56594 144647 1 0 3 0x100080 kqread resolvd 42690 252612 82229 77 3 0x100092 kqread dhcpleased 61486 2371 82229 77 3 0x100092 kqread dhcpleased 82229 424365 1 0 3 0x80 kqread dhcpleased 7835 202407 0 0 3 0x14200 bored smr 37462 304189 0 0 3 0x14200 pgzero zerothread 18110 321069 0 0 3 0x14200 aiodoned aiodoned 56990 313875 0 0 3 0x14200 syncer update 17164 96094 0 0 3 0x14200 cleaner cleaner 60282 260613 0 0 3 0x14200 reaper reaper 61124 457483 0 0 3 0x14200 pgdaemon pagedaemon 29391 513652 0 0 3 0x14200 bored viomb 14153 193038 0 0 3 0x40014200 acpi0 acpi0 68093 81652 0 0 3 0x14200 bored softnet 77816 126918 0 0 3 0x14200 bored systqmp 49320 45478 0 0 3 0x14200 bored systq 11986 44948 0 0 3 0x40014200 bored softclock 35603 473638 0 0 3 0x40014200 idle0 1 154136 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 10101 6390K 6409K 78643K 11191 0 pcb 13 8K 8K 78643K 13 0 rtable 62 2K 2K 78643K 112 0 ifaddr 24 7K 7K 78643K 24 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 25 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 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 0K 0K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 1 0K 0K 78643K 1 0 proc 56 54K 55K 78643K 227 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 25 122K 122K 78643K 25 0 exec 0 0K 2K 78643K 321 0 tdb 3 0K 0K 78643K 3 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 73 3K 4K 78643K 1479 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 3 0K 0K 78643K 3 0 temp 19 4178K 4241K 78643K 2847 0 kqueue 9 12K 12K 78643K 9 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 rtpcb 120 19 0 16 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 128 33 0 20 1 0 1 1 0 8 0 syncache 296 5 0 5 1 0 1 1 0 8 1 tcpcb 736 8 0 5 1 0 1 1 0 8 0 arp 88 2 0 0 1 0 1 1 0 8 0 inpcb 304 25 0 19 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 dino2pl 256 1402 0 23 87 0 87 87 0 8 0 ffsino 240 1402 0 23 82 0 82 82 0 8 0 nchpl 144 1575 0 38 57 0 57 57 0 8 0 uvmvnodes 80 1412 0 0 29 0 29 29 0 8 0 vnodes 224 1412 0 0 84 0 84 84 0 8 0 namei 1024 3893 0 3893 1 0 1 1 0 8 1 scxspl 216 3329 0 3329 2 1 1 2 0 8 1 plimitpl 152 15 0 9 1 0 1 1 0 8 0 sigapl 424 232 0 206 4 0 4 4 0 8 0 knotepl 112 125 0 102 1 0 1 1 0 8 0 kqueuepl 184 5 0 0 1 0 1 1 0 8 0 pipepl 304 64 0 61 1 0 1 1 0 8 0 fdescpl 432 219 0 206 2 0 2 2 0 8 0 filepl 120 962 0 908 2 0 2 2 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 17 0 9 1 0 1 1 0 8 0 pgrppl 48 17 0 9 1 0 1 1 0 8 0 ucredpl 96 65 0 54 1 0 1 1 0 8 0 zombiepl 144 207 0 206 1 0 1 1 0 8 0 processpl 1000 232 0 206 4 0 4 4 0 8 0 procpl 672 232 0 206 3 0 3 3 0 8 0 sockpl 448 77 0 55 3 0 3 3 0 8 0 mcl8k 8192 9 0 9 1 0 1 1 0 8 1 mcl4k 4096 5 0 5 1 0 1 1 0 8 1 mcl2k 2048 5610 0 5581 6 0 6 6 0 8 2 mtagpl 96 4 0 4 1 1 0 1 0 8 0 mbufpl 256 10227 0 10159 6 0 6 6 0 8 1 bufpl 288 1894 0 83 130 0 130 130 0 8 0 anonpl 24 32667 0 30613 15 1 14 15 0 188 1 amapchunkpl 152 2786 0 2659 7 1 6 7 0 158 0 amappl16 200 26 0 25 2 1 1 1 0 8 0 amappl15 192 60 0 56 1 0 1 1 0 8 0 amappl13 176 17 0 16 1 0 1 1 0 8 0 amappl12 168 27 0 24 1 0 1 1 0 8 0 amappl11 160 44 0 34 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 1 0 1 0 8 0 amappl9 144 439 0 437 1 0 1 1 0 8 0 amappl8 136 247 0 247 1 0 1 1 0 8 1 amappl7 128 45 0 42 1 0 1 1 0 8 0 amappl6 120 93 0 83 1 0 1 1 0 8 0 amappl5 112 174 0 163 1 0 1 1 0 8 0 amappl4 104 482 0 462 1 0 1 1 0 8 0 amappl3 96 133 0 117 1 0 1 1 0 8 0 amappl2 88 297 0 266 1 0 1 1 0 8 0 amappl1 80 7339 0 6987 9 0 9 9 0 8 1 amappl 88 1254 0 1197 2 0 2 2 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 72 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 219 0 206 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 219 0 206 1 0 1 1 0 8 0 vmmpekpl 168 5687 0 5673 1 0 1 1 0 8 0 vmmpepl 168 21825 0 21060 38 0 38 38 0 357 3 vmsppl 272 218 0 206 2 1 1 2 0 8 0 rwobjpl 24 8452 0 6530 12 0 12 12 0 8 0 pdppl 4096 444 0 412 50 18 32 38 0 8 0 pvpl 32 104651 0 100882 34 0 34 34 0 265 2 pmappl 216 218 0 206 1 0 1 1 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 383 0 21 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff824292db) at panic+0x161 __assert(ffffffff8249abe3,ffffffff824b8dae,1af,ffffffff8246aab5) at __assert+0x25 dt_ioctl_record_stop(ffff800000b2f300) at dt_ioctl_record_stop+0x165 dtclose(11e6e,1,2000,ffff80002165f7b0) at dtclose+0xc2 spec_close(ffff80002167da60) at spec_close+0x363 VOP_CLOSE(fffffd806d2e4bd0,1,fffffd807f7d8b40,ffff80002165f7b0) at VOP_CLOSE+0xde vn_closefile(fffffd806f9b0690,ffff80002165f7b0) at vn_closefile+0xd2 fdrop(fffffd806f9b0690,ffff80002165f7b0) at fdrop+0xc7 closef(fffffd806f9b0690,ffff80002165f7b0) at closef+0x117 fdfree(ffff80002165f7b0) at fdfree+0xf3 exit1(ffff80002165f7b0,0,0,1) at exit1+0x35d sys_exit(ffff80002165f7b0,ffff80002167dcf0,ffff80002167dd50) at sys_exit+0x16 syscall(ffff80002167ddc0) at syscall+0x44e Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff5e00, count: -15 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 panic(ffffffff824292db) at panic+0x161 __assert(ffffffff8249abe3,ffffffff824b8dae,1af,ffffffff8246aab5) at __assert+0x25 dt_ioctl_record_stop(ffff800000b2f300) at dt_ioctl_record_stop+0x165 dtclose(11e6e,1,2000,ffff80002165f7b0) at dtclose+0xc2 spec_close(ffff80002167da60) at spec_close+0x363 VOP_CLOSE(fffffd806d2e4bd0,1,fffffd807f7d8b40,ffff80002165f7b0) at VOP_CLOSE+0xde vn_closefile(fffffd806f9b0690,ffff80002165f7b0) at vn_closefile+0xd2 fdrop(fffffd806f9b0690,ffff80002165f7b0) at fdrop+0xc7 closef(fffffd806f9b0690,ffff80002165f7b0) at closef+0x117 fdfree(ffff80002165f7b0) at fdfree+0xf3 exit1(ffff80002165f7b0,0,0,1) at exit1+0x35d sys_exit(ffff80002165f7b0,ffff80002167dcf0,ffff80002167dd50) at sys_exit+0x16 syscall(ffff80002167ddc0) at syscall+0x44e Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff5e00, count: -15 ddb>