kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Tue Dec 17 20:22:47 PST 2019 OpenBSD/amd64 (ci-openbsd-multicore-3.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.103' (ECDSA) to the list of known hosts. 2019/12/17 20:22:59 parsed 1 programs 2019/12/17 20:23:07 executed programs: 0 login: uvm_fault(0xfffffd807f005170, 0x3fff7be000b, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xfffffd807f005170, 0x3fff7be000b, 0, 1) -> e in_delmulti(3fff7bdffff) at in_delmulti+0x8d end trace frame: 0xffff800020b77420, count: 0 ddb{0}> trace in_delmulti(3fff7bdffff) at in_delmulti+0x8d in_purgeaddr(ffff8000009c9800) at in_purgeaddr+0x156 in_ifdetach(ffff8000009e8000) at in_ifdetach+0x74 if_detach(ffff8000009e8000) at if_detach+0x140 tun_clone_destroy(ffff8000009e8000) at tun_clone_destroy+0x179 ifioctl(fffffd806f665c00,80206979,ffff800020b775f0,ffff800020a98ee8) at ifioctl+0x3ea sys_ioctl(ffff800020a98ee8,ffff800020b77708,ffff800020b77750) at sys_ioctl+0x5b9 syscall(ffff800020b777d0) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff7090, count: -9 ddb{0}> show registers rdi 0x2 rsi 0 rbp 0xffff800020b773d0 rbx 0 rdx 0x8b rcx 0x1 rax 0x1 r8 0xffffffff81e71f73 rt_ifa_purge+0x153 r9 0x5 r10 0x61ff336833a4fef3 r11 0x7b19ea551ae04d49 r12 0 r13 0x3 r14 0x3fff7bdffff r15 0x1 rip 0xffffffff819319dd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020b77370 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{0}> show proc PROC (syz-executor.0) pid=180169 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020a99160,0xffffffff82644068 process=0xffff800020a9b540 user=0xffff800020b72000, vmspace=0xfffffd807f005170 estcpu=27, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *40865 180169 42322 0 7 0 syz-executor.0 42322 49352 93928 0 3 0x82 nanosleep syz-executor.0 93928 367053 3538 0 3 0x82 thrsleep syz-execprog 93928 102807 3538 0 3 0x4000082 nanosleep syz-execprog 93928 235860 3538 0 3 0x4000082 thrsleep syz-execprog 93928 335883 3538 0 3 0x4000082 thrsleep syz-execprog 93928 453523 3538 0 3 0x4000082 thrsleep syz-execprog 93928 449580 3538 0 3 0x4000082 thrsleep syz-execprog 93928 181441 3538 0 3 0x4000082 thrsleep syz-execprog 93928 185239 3538 0 3 0x4000082 thrsleep syz-execprog 93928 434201 3538 0 3 0x4000082 kqread syz-execprog 3538 69094 34 0 3 0x10008a pause ksh 34 338226 4684 0 3 0x92 select sshd 27078 408373 1 0 3 0x100083 ttyin getty 4684 397 1 0 3 0x80 select sshd 46404 471899 99832 74 3 0x100092 bpf pflogd 99832 254346 1 0 3 0x80 netio pflogd 31146 361109 83977 73 3 0x100090 kqread syslogd 83977 350641 1 0 3 0x100082 netio syslogd 71027 4989 1 77 7 0x100090 dhclient 3244 358079 1 0 3 0x80 poll dhclient 1330 199615 0 0 3 0x14200 pgzero zerothread 3375 118933 0 0 3 0x14200 aiodoned aiodoned 91381 478037 0 0 3 0x14200 syncer update 97845 37257 0 0 3 0x14200 cleaner cleaner 47707 308094 0 0 3 0x14200 reaper reaper 55449 313368 0 0 3 0x14200 pgdaemon pagedaemon 78383 35272 0 0 3 0x14200 bored crynlk 37431 345849 0 0 3 0x14200 bored crypto 14067 509648 0 0 3 0x14200 bored viomb 27324 294337 0 0 3 0x40014200 acpi0 acpi0 59526 134554 0 0 3 0x40014200 idle1 87203 456938 0 0 3 0x14200 bored softnet 27293 306072 0 0 2 0x14200 systqmp 48645 128107 0 0 3 0x14200 bored systq 48868 500382 0 0 3 0x40014200 bored softclock 13931 480447 0 0 3 0x40014200 idle0 1471 3951 0 0 3 0x14200 bored smr 1 347245 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 40865 (syz-executor.0) thread 0xffff800020a98ee8 (180169) exclusive rwlock netlock r = 0 (0xffffffff82478d78) #0 witness_lock+0x52e #1 if_detach+0x70 #2 tun_clone_destroy+0x179 #3 ifioctl+0x3ea #4 sys_ioctl+0x5b9 #5 syscall+0x4a4 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8265cfc8) #0 witness_lock+0x52e #1 syscall+0x400 #2 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9472 6404K 6404K 78643K 10564 0 pcb 13 8K 8K 78643K 13 0 rtable 75 2K 2K 78643K 165 0 ifaddr 37 9K 9K 78643K 39 0 counters 39 33K 33K 78643K 39 0 ioctlops 0 0K 4K 78643K 1468 0 mount 1 1K 1K 78643K 1 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 1K 1K 78643K 2 0 sem 2 0K 0K 78643K 2 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1810 197K 290K 78643K 12817 0 file desc 3 8K 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 25 1K 1K 78643K 26 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 18 79K 79K 78643K 18 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 82 12K 12K 78643K 972 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 7 0K 0K 78643K 7 0 temp 33 3018K 3081K 78643K 3325 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 5 1 0 1 1 0 8 0 unpcb 120 29 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 1 1 0 1 0 8 0 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 35 0 27 1 0 1 1 0 8 0 nd6 48 2 0 0 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 10 0 0 1 0 1 1 0 8 0 pfstkey 112 10 0 0 1 0 1 1 0 8 0 pfstate 328 10 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 256 167 0 0 11 0 11 11 0 8 0 art_table 32 168 0 0 2 0 2 2 0 8 0 art_node 16 33 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1424 0 20 46 0 46 46 0 8 0 ffsino 272 1424 0 20 94 0 94 94 0 8 0 nchpl 144 1650 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 4156 0 4156 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 4135 0 4135 2 1 1 2 0 8 1 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 432 225 0 211 2 0 2 2 0 8 0 knotepl 112 39 0 28 1 0 1 1 0 8 0 kqueuepl 104 2 0 0 1 0 1 1 0 8 0 pipepl 160 148 0 135 1 0 1 1 0 8 0 fdescpl 488 226 0 211 3 0 3 3 0 8 0 filepl 152 1137 0 1077 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 52 0 43 1 0 1 1 0 8 0 zombiepl 144 211 0 211 1 0 1 1 0 8 1 processpl 904 242 0 211 4 0 4 4 0 8 0 procpl 632 250 0 211 4 0 4 4 0 8 0 srpgc 64 2 0 0 1 0 1 1 0 8 0 sockpl 384 81 0 61 2 0 2 2 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 68 0 0 9 0 9 9 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 108 0 0 6 0 6 6 0 8 0 bufpl 280 5945 0 1340 329 0 329 329 0 8 0 anonpl 16 22281 0 20633 15 1 14 14 0 125 7 amapchunkpl 152 830 0 764 5 0 5 5 0 158 2 amappl16 192 90 0 58 2 0 2 2 0 8 0 amappl15 184 58 0 54 1 0 1 1 0 8 0 amappl14 176 26 0 23 1 0 1 1 0 8 0 amappl12 160 4 0 4 1 1 0 1 0 8 0 amappl11 152 52 0 37 1 0 1 1 0 8 0 amappl10 144 11 0 8 1 0 1 1 0 8 0 amappl9 136 436 0 434 1 0 1 1 0 8 0 amappl8 128 96 0 84 1 0 1 1 0 8 0 amappl7 120 101 0 90 1 0 1 1 0 8 0 amappl6 112 58 0 52 1 0 1 1 0 8 0 amappl5 104 125 0 112 1 0 1 1 0 8 0 amappl4 96 501 0 470 1 0 1 1 0 8 0 amappl3 88 123 0 115 1 0 1 1 0 8 0 amappl2 80 886 0 822 3 0 3 3 0 8 1 amappl1 72 15278 0 14841 26 8 18 21 0 8 8 amappl 80 477 0 448 1 0 1 1 0 84 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 64 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 226 0 211 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 226 0 211 1 0 1 1 0 8 0 vmmpekpl 168 6216 0 6194 2 0 2 2 0 8 0 vmmpepl 168 33118 0 32128 89 7 82 82 0 357 38 vmsppl 368 225 0 211 2 0 2 2 0 8 0 pdppl 4096 459 0 422 6 0 6 6 0 8 1 pvpl 32 112378 0 108288 116 0 116 116 0 265 81 pmappl 232 225 0 211 1 0 1 1 0 8 0 extentpl 40 50 0 32 1 0 1 1 0 8 0 phpool 112 144 0 3 5 0 5 5 0 8 0 ddb{0}>