[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Update UTMP about System Runlevel Changes.
[  OK  ] Started Load/Save RF Kill Switch Status.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.166' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   46.745700] audit: type=1400 audit(1603298439.994:8): avc:  denied  { execmem } for  pid=8114 comm="syz-executor178" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[   46.767499] ================================================================================
[   46.776645] UBSAN: Undefined behaviour in arch/x86/kernel/uprobes.c:276:56
[   46.783665] index 4 is out of range for type 'insn_byte_t [4]'
[   46.789907] CPU: 1 PID: 8114 Comm: syz-executor178 Not tainted 4.19.152-syzkaller #0
[   46.797961] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.811768] Call Trace:
[   46.814359]  dump_stack+0x22c/0x33e
[   46.818007]  ubsan_epilogue+0xe/0x3a
[   46.822330]  __ubsan_handle_out_of_bounds.cold+0x63/0x6f
[   46.827851]  arch_uprobe_analyze_insn+0x9d8/0xaa0
[   46.832885]  ? default_abort_op+0x110/0x110
[   46.837290]  ? do_read_cache_page+0xfe/0x11d0
[   46.842305]  ? copy_insn+0x3f3/0x4f0
[   46.846014]  uprobe_mmap+0x8c2/0xa70
[   46.849723]  ? uprobe_apply+0x160/0x160
[   46.853695]  mmap_region+0x552/0x1510
[   46.857929]  ? vm_brk+0x20/0x20
[   46.861217]  ? security_mmap_addr+0x73/0x90
[   46.865629]  ? get_unmapped_area+0x296/0x3b0
[   46.870054]  do_mmap+0x8e8/0x1080
[   46.873615]  vm_mmap_pgoff+0x197/0x200
[   46.877507]  ? vma_is_stack_for_current+0xc0/0xc0
[   46.882338]  ? copy_fd_bitmaps+0x2c0/0x2c0
[   46.886573]  ? perf_event_set_output+0x4c0/0x4c0
[   46.891321]  ksys_mmap_pgoff+0x2d1/0x660
[   46.895383]  ? find_mergeable_anon_vma+0x260/0x260
[   46.900304]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
[   46.905678]  ? trace_hardirqs_off_caller+0x6e/0x210
[   46.910876]  ? do_syscall_64+0x21/0x670
[   46.915007]  do_syscall_64+0xf9/0x670
[   46.918905]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   46.924094] RIP: 0033:0x440379
[   46.927337] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   46.946246] RSP: 002b:00007fff00a08798 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
[   46.953951] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440379
[   46.961235] RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020007000
[   46.968514] RBP: 00000000006ca018 R08: 0000000000000003 R09: 0000000000000000
[   46.975891] R10: 0000000000000412 R11: 0000000000000246 R12: 0000000000401b80
[   46.983227] R13: 0000000000401c10 R14: 0000000000000000 R15: 0000000000000000
[   46.990609] ==========================================================