Warning: Permanently added '10.128.10.34' (ECDSA) to the list of known hosts.
executing program
[   29.512860] ==================================================================
[   29.520271] BUG: KASAN: stack-out-of-bounds in iov_iter_advance+0x4b3/0x4f0
[   29.527365] Read of size 8 at addr ffff8801c63a7d38 by task syz-executor828/3842
[   29.534883] 
[   29.536505] CPU: 1 PID: 3842 Comm: syz-executor828 Not tainted 4.4.138-g07c0138 #62
[   29.544293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   29.553634]  0000000000000000 3dbf2ccfac6754f7 ffff8801c63a79f0 ffffffff81e0ed0d
[   29.561658]  ffffea000718e9c0 ffff8801c63a7d38 0000000000000000 ffff8801c63a7d38
[   29.569727]  ffff8801c63a7d30 ffff8801c63a7a28 ffffffff81515a16 ffff8801c63a7d38
[   29.577750] Call Trace:
[   29.580328]  [<ffffffff81e0ed0d>] dump_stack+0xc1/0x124
[   29.585676]  [<ffffffff81515a16>] print_address_description+0x6c/0x216
[   29.592332]  [<ffffffff81515d35>] kasan_report.cold.7+0x175/0x2f7
[   29.598557]  [<ffffffff81e4a723>] ? iov_iter_advance+0x4b3/0x4f0
[   29.604692]  [<ffffffff814f9824>] __asan_report_load8_noabort+0x14/0x20
[   29.611440]  [<ffffffff81e4a723>] iov_iter_advance+0x4b3/0x4f0
[   29.617397]  [<ffffffff8275286d>] tun_get_user+0x2cd/0x2410
[   29.623168]  [<ffffffff8122f030>] ? debug_check_no_locks_freed+0x210/0x210
[   29.630173]  [<ffffffff827525a0>] ? tun_net_xmit+0xe60/0xe60
[   29.635965]  [<ffffffff82fb26ce>] ? rtnl_unlock+0xe/0x10
[   29.641409]  [<ffffffff8274cd46>] ? __tun_get+0x126/0x230
[   29.646934]  [<ffffffff82754bc5>] tun_chr_write_iter+0xd5/0x190
[   29.652966]  [<ffffffff8151ce0d>] __vfs_write+0x30d/0x3f0
[   29.658484]  [<ffffffff8151cb00>] ? __vfs_read+0x3e0/0x3e0
[   29.664081]  [<ffffffff81c56b09>] ? avc_policy_seqno+0x9/0x20
[   29.669940]  [<ffffffff81c685c2>] ? selinux_file_permission+0x2f2/0x450
[   29.676666]  [<ffffffff8151e300>] ? rw_verify_area+0x100/0x300
[   29.682616]  [<ffffffff8151e9f1>] vfs_write+0x191/0x4e0
[   29.687951]  [<ffffffff81520ff9>] SyS_write+0xd9/0x1c0
[   29.693197]  [<ffffffff81520f20>] ? SyS_read+0x1c0/0x1c0
[   29.698625]  [<ffffffff81003044>] ? lockdep_sys_exit_thunk+0x12/0x14
[   29.705094]  [<ffffffff838c2725>] entry_SYSCALL_64_fastpath+0x22/0x9e
[   29.711651] 
[   29.713249] The buggy address belongs to the page:
[   29.718157] page:ffffea000718e9c0 count:0 mapcount:0 mapping:          (null) index:0x0
[   29.726267] flags: 0x8000000000000000()
[   29.730334] page dumped because: kasan: bad access detected
[   29.736011] 
[   29.737607] Memory state around the buggy address:
[   29.742516]  ffff8801c63a7c00: f2 f2 f2 00 00 00 00 00 f2 f2 f2 00 00 00 00 00
[   29.749856]  ffff8801c63a7c80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   29.757275] >ffff8801c63a7d00: f1 f1 f1 f1 00 00 f2 f2 f2 f2 f2 f2 00 00 00 00
[   29.764606]                                         ^
[   29.769853]  ffff8801c63a7d80: 00 f2 f2 f2 f2 f2 f2 f2 00 00 00 00 00 f2 f2 f2
[   29.777184]  ffff8801c63a7e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   29.784510] ==================================================================
[   29.791848] Disabling lock debugging due to kernel taint
[   29.797360] Kernel panic - not syncing: panic_on_warn set ...
[   29.797360] 
[   29.804715] CPU: 1 PID: 3842 Comm: syz-executor828 Tainted: G    B           4.4.138-g07c0138 #62
[   29.813705] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   29.823037]  0000000000000000 3dbf2ccfac6754f7 ffff8801c63a7950 ffffffff81e0ed0d
[   29.831025]  ffffffff841ed4ef 0000000000000008 0000000000000000 ffff8801c63a7d38
[   29.839000]  ffff8801c63a7d30 ffff8801c63a7a10 ffffffff8140a184 0000000041b58ab3
[   29.846984] Call Trace:
[   29.849543]  [<ffffffff81e0ed0d>] dump_stack+0xc1/0x124
[   29.854877]  [<ffffffff8140a184>] panic+0x19e/0x38d
[   29.859871]  [<ffffffff81409fe6>] ? add_taint.cold.4+0x16/0x16
[   29.865834]  [<ffffffff838b4512>] ? preempt_schedule_common+0x22/0x60
[   29.872389]  [<ffffffff838b4575>] ? preempt_schedule+0x25/0x30
[   29.878343]  [<ffffffff81003058>] ? ___preempt_schedule+0x12/0x14
[   29.884553]  [<ffffffff81515933>] kasan_end_report+0x47/0x4f
[   29.890329]  [<ffffffff81515d52>] kasan_report.cold.7+0x192/0x2f7
[   29.896534]  [<ffffffff81e4a723>] ? iov_iter_advance+0x4b3/0x4f0
[   29.902654]  [<ffffffff814f9824>] __asan_report_load8_noabort+0x14/0x20
[   29.909388]  [<ffffffff81e4a723>] iov_iter_advance+0x4b3/0x4f0
[   29.915339]  [<ffffffff8275286d>] tun_get_user+0x2cd/0x2410
[   29.921023]  [<ffffffff8122f030>] ? debug_check_no_locks_freed+0x210/0x210
[   29.928009]  [<ffffffff827525a0>] ? tun_net_xmit+0xe60/0xe60
[   29.933781]  [<ffffffff82fb26ce>] ? rtnl_unlock+0xe/0x10
[   29.939203]  [<ffffffff8274cd46>] ? __tun_get+0x126/0x230
[   29.944713]  [<ffffffff82754bc5>] tun_chr_write_iter+0xd5/0x190
[   29.950756]  [<ffffffff8151ce0d>] __vfs_write+0x30d/0x3f0
[   29.956265]  [<ffffffff8151cb00>] ? __vfs_read+0x3e0/0x3e0
[   29.961864]  [<ffffffff81c56b09>] ? avc_policy_seqno+0x9/0x20
[   29.967722]  [<ffffffff81c685c2>] ? selinux_file_permission+0x2f2/0x450
[   29.974455]  [<ffffffff8151e300>] ? rw_verify_area+0x100/0x300
[   29.980398]  [<ffffffff8151e9f1>] vfs_write+0x191/0x4e0
[   29.985735]  [<ffffffff81520ff9>] SyS_write+0xd9/0x1c0
[   29.990992]  [<ffffffff81520f20>] ? SyS_read+0x1c0/0x1c0
[   29.996414]  [<ffffffff81003044>] ? lockdep_sys_exit_thunk+0x12/0x14
[   30.002881]  [<ffffffff838c2725>] entry_SYSCALL_64_fastpath+0x22/0x9e
[   30.009988] Dumping ftrace buffer:
[   30.013510]    (ftrace buffer empty)
[   30.017193] Kernel Offset: disabled
[   30.020791] Rebooting in 86400 seconds..