kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Mon Mar 30 15:48:04 PDT 2020 OpenBSD/amd64 (ci-openbsd-setuid-5.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.61' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program login: panic: kernel diagnostic assertion "p == curproc" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/vfs_vops.c", line 169 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 248917 34785 0 0x14000 0x200 1 reaper *248599 25948 0 0x14000 0x200 0K systq db_enter() at db_enter+0x18 panic(ffffffff821efc13) at panic+0x15c __assert(ffffffff82249f12,ffffffff822695b4,a9,ffffffff8222b23a) at __assert+0x2b VOP_CLOSE(fffffd806f21b760,1,fffffd807f7bfc60,0) at VOP_CLOSE+0x12f vn_closefile(fffffd8070ffba18,0) at vn_closefile+0xd7 fdrop(fffffd8070ffba18,0) at fdrop+0xc2 closef(fffffd8070ffba18,0) at closef+0x11c unp_gc(0) at unp_gc+0x172 taskq_thread(ffffffff8251f4f0) at taskq_thread+0x9c end trace frame: 0x0, 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 "p == curproc" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/vfs_vops.c", line 169 ddb{0}> trace db_enter() at db_enter+0x18 panic(ffffffff821efc13) at panic+0x15c __assert(ffffffff82249f12,ffffffff822695b4,a9,ffffffff8222b23a) at __assert+0x2b VOP_CLOSE(fffffd806f21b760,1,fffffd807f7bfc60,0) at VOP_CLOSE+0x12f vn_closefile(fffffd8070ffba18,0) at vn_closefile+0xd7 fdrop(fffffd8070ffba18,0) at fdrop+0xc2 closef(fffffd8070ffba18,0) at closef+0x11c unp_gc(0) at unp_gc+0x172 taskq_thread(ffffffff8251f4f0) at taskq_thread+0x9c end trace frame: 0x0, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020a2d4b0 rbx 0xffff800020a2d560 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff810939af kprintf+0x16f r9 0x1 r10 0xdd85003a929adf08 r11 0x88e97f6c4ff34f0 r12 0x3000000008 r13 0xffff800020a2d4c0 r14 0x100 r15 0x1 rip 0xffffffff81146c58 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020a2d4a0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (systq) pid=248599 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020a19380,0xffff800020a18eb0 process=0xffff800020a1a3d8 user=0xffff800020a28000, vmspace=0xffffffff8266bc88 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 3653 408801 73578 0 3 0x82 nanosleep syz-executor2256 73578 143601 18192 0 3 0x10008a pause ksh 18192 389791 17759 0 3 0x92 select sshd 15854 177370 1 0 3 0x100083 ttyin getty 17759 140788 1 0 3 0x80 select sshd 78536 289493 91039 73 3 0x100090 kqread syslogd 91039 6034 1 0 3 0x100082 netio syslogd 27688 95189 1 77 3 0x100090 poll dhclient 85526 117305 1 0 3 0x80 poll dhclient 17775 434653 0 0 3 0x14200 bored smr 32282 274022 0 0 3 0x14200 pgzero zerothread 15552 332751 0 0 3 0x14200 aiodoned aiodoned 40877 139992 0 0 3 0x14200 syncer update 30751 441465 0 0 3 0x14200 cleaner cleaner 34785 248917 0 0 7 0x14200 reaper 7852 180542 0 0 3 0x14200 pgdaemon pagedaemon 22981 488131 0 0 3 0x14200 bored crynlk 65125 385126 0 0 3 0x14200 bored crypto 3661 406376 0 0 3 0x40014200 acpi0 acpi0 83135 245926 0 0 3 0x40014200 idle1 76229 183379 0 0 3 0x14200 bored softnet 74575 322298 0 0 3 0x14200 bored systqmp *25948 248599 0 0 7 0x14200 systq 79632 469649 0 0 2 0x40014200 softclock 21513 159318 0 0 3 0x40014200 idle0 1 342969 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 25948 (systq) thread 0xffff800020a19110 (248599) exclusive rrwlock inode r = 0 (0xfffffd806f223818) #0 witness_lock+0x4c5 #1 rw_enter+0x453 #2 rrw_enter+0x88 #3 VOP_LOCK+0x4b #4 vn_lock+0x81 #5 vn_closefile+0xc6 #6 fdrop+0xc2 #7 closef+0x11c #8 unp_gc+0x172 #9 taskq_thread+0x9c #10 proc_trampoline+0x1c shared rwlock systq r = 0 (0xffffffff8251f550) #0 witness_lock+0x4c5 #1 taskq_thread+0x8f #2 proc_trampoline+0x1c exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8263a520) #0 witness_lock+0x4c5 #1 __mp_acquire_count+0x51 #2 mi_switch+0x392 #3 sleep_finish+0x113 #4 sleep_finish_all+0x32 #5 msleep+0x20e #6 taskq_next_work+0xbe #7 taskq_thread+0xe5 #8 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9455 6326K 6327K 78643K 10546 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 805 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 135 3047K 3097K 78643K 1535 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 120 263 0 21 8 0 8 8 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 22 0 16 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 3565 0 3565 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 2642 0 2642 2 1 1 2 0 8 1 plimitpl 152 13 0 8 1 0 1 1 0 8 0 sigapl 424 310 0 284 4 0 4 4 0 8 0 knotepl 112 5 0 0 1 0 1 1 0 8 0 kqueuepl 144 1 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 496 295 0 284 2 0 2 2 0 8 0 filepl 152 1177 0 783 16 0 16 16 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 144 284 0 283 1 0 1 1 0 8 0 processpl 984 310 0 283 4 0 4 4 0 8 0 procpl 624 310 0 283 3 0 3 3 0 8 0 sockpl 400 300 0 50 26 0 26 26 0 8 1 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 256 297 0 0 19 0 19 19 0 8 0 bufpl 280 1762 0 70 121 0 121 121 0 8 0 anonpl 16 18039 0 16914 6 1 5 6 0 124 0 amapchunkpl 152 584 0 547 2 0 2 2 0 158 0 amappl16 192 188 0 184 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 8 0 8 1 1 0 1 0 8 0 amappl11 152 64 0 52 1 0 1 1 0 8 0 amappl10 144 5 0 2 1 0 1 1 0 8 0 amappl9 136 227 0 226 1 0 1 1 0 8 0 amappl8 128 200 0 199 1 0 1 1 0 8 0 amappl7 120 78 0 70 1 0 1 1 0 8 0 amappl6 112 8 0 8 2 2 0 1 0 8 0 amappl5 104 244 0 233 1 0 1 1 0 8 0 amappl4 96 420 0 394 1 0 1 1 0 8 0 amappl3 88 98 0 92 1 0 1 1 0 8 0 amappl2 80 704 0 658 2 0 2 2 0 8 0 amappl1 72 12575 0 12189 14 4 10 14 0 8 0 amappl 80 472 0 452 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 24 295 0 283 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 295 0 283 1 0 1 1 0 8 0 vmmpekpl 168 5354 0 5334 1 0 1 1 0 8 0 vmmpepl 168 27285 0 26535 44 8 36 44 0 357 2 vmsppl 368 294 0 283 2 0 2 2 0 8 0 pdppl 4096 598 0 566 5 0 5 5 0 8 0 pvpl 32 73335 0 70599 26 0 26 26 0 265 3 pmappl 232 294 0 283 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 169 0 2 5 0 5 5 0 8 0 ddb{0}>