kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Tue Mar 26 18:30:39 PDT 2019 OpenBSD/amd64 (ci-openbsd-multicore-0.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.29' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program login: panic: kernel diagnostic assertion "tname->un_flags & UNVEIL_USERSET" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_unveil.c", line 879 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 177242 97488 0 0 0 1 syz-executor9563 *215789 97488 0 0 0x4000000 0K syz-executor9563 db_enter() at db_enter+0x18 panic() at panic+0x174 __assert(ffffffff81f7eb2c,ffffffff81f800b9,36f,ffffffff81f8afb5) at __assert+0x2e unveil_check_final(ffff800020b14968,ffff800020bdf620) at unveil_check_final+0x81d namei(ffff800020bdf620) at namei+0x88b vn_open(ffff800020bdf620,10222,0) at vn_open+0x157 doopenat(ffff800020b14968,ffffff9c,20000040,10221,0,ffff800020bdf860) at doopenat+0x2ca syscall(ffff800020bdf910) at syscall+0x5b8 Xsyscall(6,0,a4dfd2810c8,0,a4dfd2810a8,a4dfd2810a0) at Xsyscall+0x128 end of kernel end trace frame: 0xa503e772b60, count: 6 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel diagnostic assertion "tname->un_flags & UNVEIL_USERSET" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_unveil.c", line 879 ddb{0}> trace db_enter() at db_enter+0x18 panic() at panic+0x174 __assert(ffffffff81f7eb2c,ffffffff81f800b9,36f,ffffffff81f8afb5) at __assert+0x2e unveil_check_final(ffff800020b14968,ffff800020bdf620) at unveil_check_final+0x81d namei(ffff800020bdf620) at namei+0x88b vn_open(ffff800020bdf620,10222,0) at vn_open+0x157 doopenat(ffff800020b14968,ffffff9c,20000040,10221,0,ffff800020bdf860) at doopenat+0x2ca syscall(ffff800020bdf910) at syscall+0x5b8 Xsyscall(6,0,a4dfd2810c8,0,a4dfd2810a8,a4dfd2810a0) at Xsyscall+0x128 end of kernel end trace frame: 0xa503e772b60, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020bdf260 rbx 0xffff800020bdf310 rdx 0xffffffff81f89e77 apollo_pio_rec+0x9e22 rcx 0x201 rax 0x1 r8 0xffffffff811c43a3 kprintf+0x183 r9 0x1 r10 0x57593bc3cf44ac2b r11 0x9f7e4fcb6bfe59c5 r12 0x3000000008 r13 0xffff800020bdf270 r14 0x100 r15 0x1 rip 0xffffffff81e2e758 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020bdf250 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor9563) pid=215789 stat=onproc flags process=0 proc=4000000 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020b14008,0xffff800020b14270 process=0xffff800020b8c360 user=0xffff800020bda000, vmspace=0xfffffd807effeca8 estcpu=8, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 97488 177242 55674 0 7 0 syz-executor9563 *97488 215789 55674 0 7 0x4000000 syz-executor9563 97488 360970 55674 0 3 0x4000080 fsleep syz-executor9563 97586 185232 51559 0 2 0 syz-executor9563 97586 184629 51559 0 3 0x4000080 fsleep syz-executor9563 97586 478405 51559 0 2 0x4000000 syz-executor9563 51559 491454 90626 0 3 0x80 nanosleep syz-executor9563 55674 501263 90626 0 3 0x80 nanosleep syz-executor9563 90626 164676 22547 0 3 0x82 nanosleep syz-executor9563 22547 197073 64220 0 3 0x10008a pause ksh 64220 339550 33617 0 3 0x92 select sshd 27867 382109 1 0 3 0x100083 ttyin getty 33617 208539 1 0 3 0x80 select sshd 59116 131546 17179 74 3 0x100092 bpf pflogd 17179 447909 1 0 3 0x80 netio pflogd 24371 206301 73970 73 3 0x100090 kqread syslogd 73970 61448 1 0 3 0x100082 netio syslogd 24851 373246 1 77 3 0x100090 poll dhclient 58378 719 1 0 3 0x80 poll dhclient 33392 89465 0 0 2 0x14200 zerothread 84123 494342 0 0 3 0x14200 aiodoned aiodoned 35055 503758 0 0 3 0x14200 syncer update 72553 359416 0 0 3 0x14200 cleaner cleaner 3892 511658 0 0 3 0x14200 reaper reaper 43845 279269 0 0 3 0x14200 pgdaemon pagedaemon 40576 63281 0 0 3 0x14200 bored crynlk 30694 204339 0 0 3 0x14200 bored crypto 84702 297517 0 0 3 0x40014200 acpi0 acpi0 26174 395714 0 0 3 0x40014200 idle1 52307 339522 0 0 3 0x14200 bored softnet 91953 389992 0 0 3 0x14200 bored systqmp 61219 445784 0 0 3 0x14200 bored systq 11329 256613 0 0 3 0x40014200 bored softclock 30026 326816 0 0 3 0x40014200 idle0 97778 242697 0 0 3 0x14200 bored smr 1 348669 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 97488 (syz-executor9563) thread 0xffff800020b14968 (215789) exclusive rrwlock inode r = 0 (0xfffffd806d9e11b0) locked @ /syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547 #0 witness_lock+0x594 #1 _rw_enter+0x45d #2 _rrw_enter+0x60 #3 VOP_LOCK+0x57 #4 vn_lock+0x6e #5 vget+0x1c3 #6 cache_lookup+0x300 #7 ufs_lookup+0x1d7 #8 VOP_LOOKUP+0x67 #9 vfs_lookup+0x556 #10 namei+0x4b2 #11 vn_open+0x157 #12 doopenat+0x2ca #13 syscall+0x5b8 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ed21c58) locked @ /syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547 #0 witness_lock+0x594 #1 _rw_enter+0x45d #2 _rrw_enter+0x60 #3 VOP_LOCK+0x57 #4 vn_lock+0x6e #5 vfs_lookup+0xf5 #6 namei+0x4b2 #7 vn_open+0x157 #8 doopenat+0x2ca #9 syscall+0x5b8 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8234a3d0) locked @ /syzkaller/managers/multicore/kernel/sys/sys/syscall_mi.h:90 #0 witness_lock+0x594 #1 syscall+0x48b #2 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9450 6382K 6383K 78643K 10537 0 0 pcb 25 9K 9K 78643K 57 0 0 rtable 61 2K 2K 78643K 125 0 0 ifaddr 25 7K 7K 78643K 26 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1467 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1167 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 1K 1K 78643K 2 0 0 sem 2 0K 0K 78643K 2 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 1 0K 0K 78643K 1 0 0 proc 55 62K 70K 78643K 299 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 184 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 68 19K 19K 78643K 790 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 4 0K 0K 78643K 4 0 0 temp 39 2360K 2424K 78643K 1999 0 0 SYN cache 2 16K 16K 78643K 2 0 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 inpcbpl 280 29 0 23 1 0 1 1 0 8 0 plimitpl 152 16 0 8 1 0 1 1 0 8 0 plcache 128 20 0 0 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 tcpqe 32 7 0 7 1 1 0 1 0 8 0 tcpcb 544 8 0 5 1 0 1 1 0 8 0 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 8 0 2 1 0 1 1 0 8 0 pfstkey 112 8 0 2 1 0 1 1 0 8 0 pfstate 328 8 0 2 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 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 17 45 0 45 45 0 8 0 ffsino 272 1391 0 17 92 0 92 92 0 8 0 nchpl 144 1565 0 32 57 0 57 57 0 8 0 uvmvnodes 72 1401 0 0 26 0 26 26 0 8 0 vnodes 200 1401 0 0 74 0 74 74 0 8 0 namei 1024 3576 0 3575 2 1 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 2459 0 2459 7 6 1 6 0 8 1 sigapl 432 213 0 197 2 0 2 2 0 8 0 futexpl 56 12 0 10 1 0 1 1 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 112 134 0 127 3 2 1 1 0 8 0 fdescpl 488 214 0 197 3 0 3 3 0 8 0 filepl 152 967 0 918 2 0 2 2 0 8 0 lockfpl 104 16 0 15 2 1 1 1 0 8 0 lockfspl 32 6 0 5 2 1 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 20 0 9 1 0 1 1 0 8 0 ucredpl 96 52 0 43 1 0 1 1 0 8 0 zombiepl 144 197 0 197 3 2 1 1 0 8 1 processpl 840 229 0 197 4 0 4 4 0 8 0 procpl 600 237 0 201 3 0 3 3 0 8 0 sockpl 384 73 0 55 2 0 2 2 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 72 0 0 9 0 9 9 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 90 0 0 5 0 5 5 0 8 0 bufpl 256 2164 0 275 119 0 119 119 0 8 0 anonpl 16 19363 0 18061 9 3 6 7 0 125 0 amapchunkpl 152 578 0 529 2 0 2 2 0 158 0 amappl16 192 38 0 35 1 0 1 1 0 8 0 amappl15 184 53 0 49 1 0 1 1 0 8 0 amappl14 176 16 0 15 3 2 1 1 0 8 0 amappl13 168 22 0 19 1 0 1 1 0 8 0 amappl12 160 7 0 7 2 1 1 1 0 8 1 amappl11 152 26 0 11 1 0 1 1 0 8 0 amappl10 144 56 0 54 1 0 1 1 0 8 0 amappl9 136 417 0 416 1 0 1 1 0 8 0 amappl8 128 108 0 99 1 0 1 1 0 8 0 amappl7 120 18 0 17 1 0 1 1 0 8 0 amappl6 112 44 0 40 1 0 1 1 0 8 0 amappl5 104 132 0 118 1 0 1 1 0 8 0 amappl4 96 439 0 413 1 0 1 1 0 8 0 amappl3 88 106 0 99 1 0 1 1 0 8 0 amappl2 80 693 0 637 2 0 2 2 0 8 0 amappl1 72 13852 0 13401 15 5 10 15 0 8 0 amappl 72 444 0 413 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 24 214 0 197 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 214 0 197 1 0 1 1 0 8 0 vmmpekpl 168 5601 0 5580 2 0 2 2 0 8 0 vmmpepl 168 27652 0 26727 53 12 41 46 0 357 0 vmsppl 360 213 0 197 2 0 2 2 0 8 0 pdppl 4096 436 0 394 6 0 6 6 0 8 0 pvpl 32 82546 0 79291 40 11 29 29 0 265 1 pmappl 224 213 0 197 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 249 0 4 7 0 7 7 0 8 0 ddb{0}>