kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sat Jul 18 20:38:58 PDT 2020 OpenBSD/amd64 (ci-openbsd-multicore-5.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.19' (ECDSA) to the list of known hosts. 2020/07/18 20:39:22 parsed 1 programs 2020/07/18 20:39:28 executed programs: 0 login: panic: receive 3: so 0xfffffd806f687000, so_type 3, m 0xfffffd806d80f800, m_type 0 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 37002 78889 0 0 0 0K dhclient 416782 11494 0 0x14000 0x200 1 reaper db_enter() at db_enter+0x18 panic(ffffffff823e025d) at panic+0x15c soreceive(fffffd806f687000,0,ffff800020e1ecc8,0,0,ffff800020e1ebd4) at soreceive+0x1727 soo_read(fffffd806fc37098,ffff800020e1ecc8,0) at soo_read+0x53 dofilereadv(ffff800020ddc278,6,ffff800020e1ecc8,0,ffff800020e1edb0) at dofilereadv+0x1a1 sys_read(ffff800020ddc278,ffff800020e1ed60,ffff800020e1edb0) at sys_read+0x83 syscall(ffff800020e1ee30) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9db0, count: 7 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 receive 3: so 0xfffffd806f687000, so_type 3, m 0xfffffd806d80f800, m_type 0 ddb{0}> trace db_enter() at db_enter+0x18 panic(ffffffff823e025d) at panic+0x15c soreceive(fffffd806f687000,0,ffff800020e1ecc8,0,0,ffff800020e1ebd4) at soreceive+0x1727 soo_read(fffffd806fc37098,ffff800020e1ecc8,0) at soo_read+0x53 dofilereadv(ffff800020ddc278,6,ffff800020e1ecc8,0,ffff800020e1edb0) at dofilereadv+0x1a1 sys_read(ffff800020ddc278,ffff800020e1ed60,ffff800020e1edb0) at sys_read+0x83 syscall(ffff800020e1ee30) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9db0, count: -8 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800020e1ea10 rbx 0xffff800020e1eac0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff813f032f kprintf+0x16f r9 0x1 r10 0x2 r11 0x357fc3c7073be21e r12 0x3000000008 r13 0xffff800020e1ea20 r14 0x100 r15 0x1 rip 0xffffffff812c6398 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020e1ea00 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (dhclient) pid=37002 stat=onproc flags process=0 proc=0 pri=24, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff800020ddd5f8,0xffff800020ddc018 process=0xffff800020df07d0 user=0xffff800020e19000, vmspace=0xfffffd807efff170 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 92246 177916 43615 0 3 0x82 thrsleep syz-execprog 92246 267619 43615 0 3 0x4000082 thrsleep syz-execprog 92246 163619 43615 0 3 0x4000082 thrsleep syz-execprog 92246 146142 43615 0 3 0x4000082 thrsleep syz-execprog 92246 99842 43615 0 3 0x4000082 wait syz-execprog 92246 186807 43615 0 3 0x4000082 thrsleep syz-execprog 92246 315930 43615 0 3 0x4000082 thrsleep syz-execprog 92246 165459 43615 0 3 0x4000082 kqread syz-execprog 92246 426101 43615 0 3 0x4000082 thrsleep syz-execprog 43615 368352 1748 0 3 0x10008a pause ksh 1748 379659 42957 0 3 0x92 select sshd 41437 28419 1 0 3 0x100083 ttyin getty 42957 348545 1 0 3 0x80 select sshd 80969 466249 64034 74 3 0x100092 bpf pflogd 64034 155693 1 0 3 0x80 netio pflogd 3909 235581 83370 73 3 0x100090 kqread syslogd 83370 379476 1 0 3 0x100082 netio syslogd 88789 349047 1 77 2 0x100010 dhclient *78889 37002 1 0 7 0 dhclient 47450 423872 0 0 3 0x14200 bored smr 252 291862 0 0 3 0x14200 pgzero zerothread 52211 372477 0 0 3 0x14200 aiodoned aiodoned 42469 67721 0 0 3 0x14200 syncer update 13757 469420 0 0 3 0x14200 cleaner cleaner 11494 416782 0 0 7 0x14200 reaper 31878 49295 0 0 3 0x14200 pgdaemon pagedaemon 5684 495857 0 0 3 0x14200 bored crynlk 21508 167752 0 0 3 0x14200 bored crypto 76270 453006 0 0 3 0x40014200 acpi0 acpi0 44281 92137 0 0 3 0x40014200 idle1 14818 75531 0 0 2 0x14200 softnet 84907 380334 0 0 3 0x14200 bored systqmp 15423 255767 0 0 3 0x14200 bored systq 26426 219792 0 0 3 0x40014200 bored softclock 96157 127196 0 0 3 0x40014200 idle0 1 361232 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex &(curpg)->mdpage.pv_mtx r = 0 (0xfffffd800727fe98) #0 witness_lock+0x4c7 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b #3 pmap_remove_ptes+0x233 #4 pmap_do_remove+0x401 #5 uvm_map_teardown+0x195 #6 uvmspace_free+0x86 #7 uvm_exit+0x29 #8 reaper+0x189 #9 proc_trampoline+0x1c exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd807effe498) #0 witness_lock+0x4c7 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b #3 pmap_do_remove+0x88 #4 uvm_map_teardown+0x195 #5 uvmspace_free+0x86 #6 uvm_exit+0x29 #7 reaper+0x189 #8 proc_trampoline+0x1c Process 78889 (dhclient) thread 0xffff800020ddc278 (37002) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82922438) #0 witness_lock+0x4c7 #1 solock+0x66 #2 soreceive+0xb3a #3 soo_read+0x53 #4 dofilereadv+0x1a1 #5 sys_read+0x83 #6 syscall+0x4a4 #7 Xsyscall+0x128 Process 14818 (softnet) thread 0xffff800020d88750 (75531) shared rwlock softnet r = 0 (0xffff80000002c070) #0 witness_lock+0x4c7 #1 taskq_thread+0xdf #2 proc_trampoline+0x1c ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9463 6394K 6396K 78643K 10560 0 pcb 13 8K 8K 78643K 13 0 rtable 61 2K 2K 78643K 165 0 ifaddr 29 8K 9K 78643K 39 0 counters 39 33K 33K 78643K 41 0 ioctlops 0 0K 4K 78643K 1468 0 mount 1 1K 1K 78643K 1 0 vnodes 1183 74K 75K 78643K 1188 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 1824 197K 290K 78643K 13058 0 file desc 1 0K 12K 78643K 18 0 proc 59 63K 83K 78643K 398 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 1K 78643K 22 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 197 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 72 11K 12K 78643K 948 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 4 0K 0K 78643K 7 0 temp 24 3849K 3913K 78643K 1874 0 kqueue 3 4K 4K 78643K 3 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 4 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 12 1 0 1 1 0 8 0 unpcb 120 29 0 19 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 inpcb 296 34 0 28 1 0 1 1 0 8 0 nd6 48 3 0 3 1 0 1 1 0 8 1 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 11 0 0 1 0 1 1 0 8 0 pfstkey 112 11 0 0 1 0 1 1 0 8 0 pfstate 328 11 0 0 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 256 144 0 48 9 0 9 9 0 8 3 art_table 32 145 0 48 2 0 2 2 0 8 1 art_node 16 33 0 13 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1424 0 22 88 0 88 88 0 8 0 ffsino 272 1424 0 22 94 0 94 94 0 8 0 nchpl 144 1643 0 38 60 0 60 60 0 8 0 uvmvnodes 72 1434 0 0 27 0 27 27 0 8 0 vnodes 208 1434 0 0 76 0 76 76 0 8 0 namei 1024 4231 0 4231 2 1 1 1 0 8 1 percpumem 16 31 0 1 1 0 1 1 0 8 0 scxspl 192 4618 0 4618 8 1 7 7 0 8 7 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 424 241 0 213 4 0 4 4 0 8 0 knotepl 112 47 0 38 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipepl 304 77 0 71 2 1 1 1 0 8 0 fdescpl 496 226 0 213 3 0 3 3 0 8 0 filepl 152 1117 0 1064 3 0 3 3 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 19 0 9 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 62 0 53 1 0 1 1 0 8 0 zombiepl 144 213 0 212 2 1 1 1 0 8 0 processpl 992 241 0 212 5 0 5 5 0 8 1 procpl 624 249 0 212 4 0 4 4 0 8 1 sockpl 400 80 0 62 2 0 2 2 0 8 0 mcl4k 4096 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 75 0 0 10 0 10 10 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 140 0 0 8 0 8 8 0 8 0 bufpl 280 3050 0 133 209 0 209 209 0 8 0 anonpl 16 22433 0 20805 14 2 12 12 0 124 4 amapchunkpl 152 897 0 831 5 0 5 5 0 158 1 amappl16 192 139 0 108 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 30 0 26 1 0 1 1 0 8 0 amappl13 168 24 0 21 2 1 1 1 0 8 0 amappl12 160 2 0 1 2 1 1 1 0 8 0 amappl11 152 55 0 39 1 0 1 1 0 8 0 amappl10 144 30 0 27 1 0 1 1 0 8 0 amappl9 136 222 0 221 1 0 1 1 0 8 0 amappl8 128 268 0 260 1 0 1 1 0 8 0 amappl7 120 117 0 106 1 0 1 1 0 8 0 amappl6 112 25 0 21 2 1 1 1 0 8 0 amappl5 104 152 0 137 1 0 1 1 0 8 0 amappl4 96 494 0 466 1 0 1 1 0 8 0 amappl3 88 105 0 99 1 0 1 1 0 8 0 amappl2 80 908 0 850 3 1 2 2 0 8 0 amappl1 72 15559 0 15146 23 5 18 18 0 8 8 amappl 80 476 0 448 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 226 0 213 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 226 0 213 1 0 1 1 0 8 0 vmmpekpl 168 6434 0 6406 2 0 2 2 0 8 0 vmmpepl 168 33057 0 32140 82 10 72 72 0 357 30 vmsppl 368 225 0 212 2 0 2 2 0 8 0 pdppl 4096 459 0 424 6 0 6 6 0 8 1 pvpl 32 113918 0 110003 108 4 104 104 0 265 69 pmappl 232 225 0 212 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 235 0 4 7 0 7 7 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x18 panic(ffffffff823e025d) at panic+0x15c soreceive(fffffd806f687000,0,ffff800020e1ecc8,0,0,ffff800020e1ebd4) at soreceive+0x1727 soo_read(fffffd806fc37098,ffff800020e1ecc8,0) at soo_read+0x53 dofilereadv(ffff800020ddc278,6,ffff800020e1ecc8,0,ffff800020e1edb0) at dofilereadv+0x1a1 sys_read(ffff800020ddc278,ffff800020e1ed60,ffff800020e1edb0) at sys_read+0x83 syscall(ffff800020e1ee30) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd9db0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xc6 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82922230) at __mp_lock+0x12e uvm_unmap_detach(ffff800020dcfdd0,1) at uvm_unmap_detach+0xe7 uvm_map_teardown(fffffd807efff8a0) at uvm_map_teardown+0x25c uvmspace_free(fffffd807efff8a0) at uvmspace_free+0x86 uvm_exit(ffff800020df0f90) at uvm_exit+0x29 reaper(ffff800020d89860) at reaper+0x189 end trace frame: 0x0, count: 6 ddb{1}> trace x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xc6 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82922230) at __mp_lock+0x12e uvm_unmap_detach(ffff800020dcfdd0,1) at uvm_unmap_detach+0xe7 uvm_map_teardown(fffffd807efff8a0) at uvm_map_teardown+0x25c uvmspace_free(fffffd807efff8a0) at uvmspace_free+0x86 uvm_exit(ffff800020df0f90) at uvm_exit+0x29 reaper(ffff800020d89860) at reaper+0x189 end trace frame: 0x0, count: -9 ddb{1}>