kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Wed Dec 2 16:26:57 PST 2020 OpenBSD/amd64 (ci-openbsd-setuid-test-0.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.204' (ECDSA) to the list of known hosts. 2020/12/02 16:27:11 fuzzer started 2020/12/02 16:27:14 connecting to host at 10.128.15.235:35850 2020/12/02 16:27:14 checking machine... 2020/12/02 16:27:14 checking revisions... 2020/12/02 16:27:14 testing simple program... login: uvm_fault(0xffffffff828b3da8, 0xffff80012a2315b0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at spllower+0x34: movq 0x5c0(%r12,%rax,8),%rbx ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff828b3da8, 0xffff80012a2315b0, 0, 1) -> e spllower(ffff800021299000) at spllower+0x34 end trace frame: 0xffff8000234a4940, count: 0 ddb{1}> trace spllower(ffff800021299000) at spllower+0x34 single_thread_check_locked(ffff8000ffff4f78,0) at single_thread_check_locked+0x196 userret(ffff8000ffff4f78) at userret+0x335 syscall(ffff8000234a4a70) at syscall+0x55c Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaf04c03f0c0, count: -5 ddb{1}> show registers rdi 0xffff800021299000 rsi 0x775 rbp 0xffff8000234a48e0 rbx 0x1000 __ALIGN_SIZE rdx 0xffff800021299000 rcx 0x774 rax 0x21299000 r8 0xffffffff8196abe7 syscall+0x4e7 r9 0x5 r10 0 r11 0x40d03ec941e4fc99 r12 0xffff800020d68ff0 r13 0x1 r14 0x21299000 r15 0xffff8000ffff4f78 rip 0xffffffff81795ab4 spllower+0x34 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000234a4890 ss 0x10 spllower+0x34: movq 0x5c0(%r12,%rax,8),%rbx ddb{1}> show proc PROC (syz-executor.0) pid=321928 stat=onproc flags process=1018 proc=4080000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff5498,0xffffffff828f9680 process=0xffff8000ffff8848 user=0xffff80002349f000, vmspace=0xfffffd806ea55a18 estcpu=3, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *76556 321928 36936 32767 7 0x4081018 syz-executor.0 36936 259700 4445 32767 3 0x90 nanosleep syz-executor.0 4445 467717 89696 0 3 0x82 wait syz-executor.0 89696 273200 65721 0 3 0x82 thrsleep syz-fuzzer 89696 222227 65721 0 3 0x4000082 nanosleep syz-fuzzer 89696 455727 65721 0 3 0x4000082 thrsleep syz-fuzzer 89696 486552 65721 0 3 0x4000082 thrsleep syz-fuzzer 89696 449514 65721 0 3 0x4000082 kqread syz-fuzzer 89696 203380 65721 0 3 0x4000082 thrsleep syz-fuzzer 89696 488555 65721 0 3 0x4000082 thrsleep syz-fuzzer 89696 98840 65721 0 3 0x4000082 nanosleep syz-fuzzer 65721 500484 68613 0 3 0x10008a pause ksh 68613 386814 82950 0 3 0x92 select sshd 6545 275779 1 0 3 0x100083 ttyin getty 82950 469546 1 0 3 0x80 select sshd 45896 101680 28652 73 3 0x100090 kqread syslogd 28652 149782 1 0 3 0x100082 netio syslogd 17221 489788 1 77 3 0x100090 poll dhclient 71610 104549 1 0 3 0x80 poll dhclient 12657 384524 0 0 3 0x14200 bored smr 6208 406096 0 0 3 0x14200 pgzero zerothread 37362 230235 0 0 3 0x14200 aiodoned aiodoned 50369 472053 0 0 3 0x14200 syncer update 11170 222772 0 0 3 0x14200 cleaner cleaner 16956 29307 0 0 3 0x14200 reaper reaper 79966 193938 0 0 3 0x14200 pgdaemon pagedaemon 37177 191645 0 0 3 0x14200 bored crynlk 71005 226349 0 0 3 0x14200 bored crypto 19693 3646 0 0 3 0x14200 bored viomb 21572 163322 0 0 3 0x40014200 acpi0 acpi0 47101 280734 0 0 3 0x40014200 idle1 53211 235976 0 0 3 0x14200 bored softnet 11578 322075 0 0 3 0x14200 bored systqmp 78605 427948 0 0 3 0x14200 bored systq 56684 424985 0 0 3 0x40014200 bored softclock 2805 230358 0 0 7 0x40014200 idle0 1 114478 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 76556 (syz-executor.0) thread 0xffff8000ffff4f78 (321928) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828f9890) #0 witness_lock+0x4b0 #1 kpageflttrap+0x23f #2 kerntrap+0xef #3 alltraps_kern_meltdown+0x7b #4 spllower+0x34 #5 single_thread_check_locked+0x196 #6 userret+0x335 #7 syscall+0x55c #8 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9472 6346K 6346K 78643K 10562 0 pcb 13 8K 8K 78643K 13 0 rtable 83 2K 2K 78643K 153 0 ifaddr 32 8K 8K 78643K 32 0 counters 41 33K 33K 78643K 41 0 ioctlops 0 0K 2K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1199 75K 75K 78643K 1204 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 1825 197K 290K 78643K 13109 0 file desc 4 12K 16K 78643K 19 0 proc 48 50K 70K 78643K 325 0 subproc 17 1K 1K 78643K 17 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 22 1K 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 2K 78643K 295 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 56 11K 11K 78643K 607 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 6 0K 0K 78643K 6 0 temp 40 3954K 4017K 78643K 1668 0 kqueue 3 4K 4K 78643K 3 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 4 0 0 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 120 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 1 1 0 1 1 0 8 0 unpcb 120 23 0 15 1 0 1 1 0 8 0 syncache 296 4 0 4 1 0 1 1 0 8 1 tcpcb 736 10 0 4 1 0 1 1 0 8 0 inpcb 296 28 0 22 1 0 1 1 0 8 0 nd6 48 3 0 0 1 0 1 1 0 8 0 kcovpl 48 1 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 144 0 0 9 0 9 9 0 8 0 art_table 32 145 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 dino2pl 256 1412 0 21 87 0 87 87 0 8 0 ffsino 272 1412 0 21 93 0 93 93 0 8 0 nchpl 144 1627 0 36 59 0 59 59 0 8 0 uvmvnodes 72 1438 0 0 27 0 27 27 0 8 0 vnodes 208 1438 0 0 76 0 76 76 0 8 0 namei 1024 3829 0 3829 1 0 1 1 0 8 1 percpumem 16 31 0 0 1 0 1 1 0 8 0 scxspl 216 4790 0 4790 2 1 1 2 0 8 1 plimitpl 152 14 0 7 1 0 1 1 0 8 0 sigapl 424 212 0 182 4 0 4 4 0 8 0 futexpl 56 1 0 1 1 0 1 1 0 8 1 knotepl 112 62 0 50 1 0 1 1 0 8 0 kqueuepl 152 2 0 0 1 0 1 1 0 8 0 pipepl 304 69 0 61 1 0 1 1 0 8 0 fdescpl 496 196 0 182 2 0 2 2 0 8 0 filepl 152 921 0 849 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 144 16 0 7 1 0 1 1 0 8 0 pgrppl 48 16 0 7 1 0 1 1 0 8 0 ucredpl 96 51 0 43 1 0 1 1 0 8 0 zombiepl 144 182 0 182 1 0 1 1 0 8 1 processpl 1056 212 0 182 4 1 3 3 0 8 1 procpl 656 220 0 182 4 0 4 4 0 8 0 sockpl 400 68 0 52 2 0 2 2 0 8 0 mcl4k 4096 2 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 99 0 0 7 0 7 7 0 8 0 bufpl 280 3448 0 173 234 0 234 234 0 8 0 anonpl 16 22289 0 20145 16 2 14 14 0 124 4 amapchunkpl 152 852 0 778 6 1 5 5 0 158 1 amappl16 192 157 0 95 4 0 4 4 0 8 0 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 23 0 18 1 0 1 1 0 8 0 amappl13 168 19 0 16 1 0 1 1 0 8 0 amappl12 160 15 0 14 2 1 1 1 0 8 0 amappl11 152 42 0 33 1 0 1 1 0 8 0 amappl10 144 16 0 9 1 0 1 1 0 8 0 amappl9 136 382 0 382 1 0 1 1 0 8 1 amappl8 128 83 0 67 1 0 1 1 0 8 0 amappl7 120 202 0 196 1 0 1 1 0 8 0 amappl6 112 56 0 44 1 0 1 1 0 8 0 amappl5 104 328 0 312 1 0 1 1 0 8 0 amappl4 96 242 0 220 1 0 1 1 0 8 0 amappl3 88 99 0 92 1 0 1 1 0 8 0 amappl2 80 844 0 786 2 0 2 2 0 8 0 amappl1 72 13212 0 12768 23 5 18 18 0 8 8 amappl 80 410 0 381 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 196 0 182 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 196 0 182 1 0 1 1 0 8 0 vmmpekpl 168 5707 0 5691 1 0 1 1 0 8 0 vmmpepl 168 29718 0 28581 80 7 73 73 0 357 23 vmsppl 368 195 0 182 2 0 2 2 0 8 0 pdppl 4096 399 0 364 47 10 37 37 0 8 2 pvpl 32 108556 0 103547 117 0 117 117 0 265 76 pmappl 232 195 0 182 1 0 1 1 0 8 0 extentpl 40 58 0 40 1 0 1 1 0 8 0 phpool 112 267 0 12 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff826c3ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xb7 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x7 softintr_dispatch(0) at softintr_dispatch+0x4e Xsoftclock() at Xsoftclock+0x1f acpicpu_idle() at acpicpu_idle+0x2eb sched_idle(ffffffff826c3ff0) at sched_idle+0x417 end trace frame: 0x0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at spllower+0x34: movq 0x5c0(%r12,%rax,8),%rbx ddb{1}> trace spllower(ffff800021299000) at spllower+0x34 single_thread_check_locked(ffff8000ffff4f78,0) at single_thread_check_locked+0x196 userret(ffff8000ffff4f78) at userret+0x335 syscall(ffff8000234a4a70) at syscall+0x55c Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xaf04c03f0c0, count: -5