IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
device veth1_vlan entered promiscuous mode
device veth1_vlan entered promiscuous mode
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 8238 Comm: syz-executor.1 Not tainted 4.6.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800abb861c0 ti: ffff880129538000 task.ti: ffff880129538000
RIP: 0010:[<ffffffff8300076a>]  [<ffffffff8300076a>] scr_memmovew include/linux/vt_buffer.h:54 [inline]
RIP: 0010:[<ffffffff8300076a>]  [<ffffffff8300076a>] insert_char+0x28a/0x420 drivers/tty/vt/vt.c:550
RSP: 0018:ffff88012953f768  EFLAGS: 00010203
RAX: 0000000020000001 RBX: 000000010000000e RCX: dffffc0000000000
RDX: 00000000fffffffc RSI: 0000000000000001 RDI: ffff8800abb80934
RBP: ffff88012953f7b8 R08: 0000000000000012 R09: dffffc0000000000
R10: 0000000000000011 R11: 0000000000000001 R12: 0000000000000010
R13: 000000010000000c R14: ffff8800abb805c0 R15: 0000000000000010
FS:  00007f1b3a463700(0000) GS:ffff88012c000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000758090 CR3: 00000000a8392000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8800abb869c0 ffff8800abb869c8 ffff8800abb86a90 1ffff100252a7ef2
 ffff880000000000 0000000000000000 ffff8800abb805c0 0000000000000000
 ffffed001577012f 1ffff100252a7f00 ffff88012953f928 ffffffff8300a90e
Call Trace:
 [<ffffffff8300a90e>] csi_at drivers/tty/vt/vt.c:1616 [inline]
 [<ffffffff8300a90e>] do_con_trol+0x504e/0x5a40 drivers/tty/vt/vt.c:2063
 [<ffffffff8300b787>] do_con_write.part.22+0x487/0x1950 drivers/tty/vt/vt.c:2421
 [<ffffffff8300ccf6>] do_con_write drivers/tty/vt/vt.c:2779 [inline]
 [<ffffffff8300ccf6>] con_write+0x76/0x90 drivers/tty/vt/vt.c:2775
 [<ffffffff82fbb200>] process_output_block drivers/tty/n_tty.c:581 [inline]
 [<ffffffff82fbb200>] n_tty_write+0x4f0/0x10b0 drivers/tty/n_tty.c:2313
 [<ffffffff82fac64d>] do_tty_write drivers/tty/tty_io.c:1175 [inline]
 [<ffffffff82fac64d>] tty_write+0x44d/0x7f0 drivers/tty/tty_io.c:1260
 [<ffffffff81797a8b>] __vfs_write+0xdb/0x4f0 fs/read_write.c:529
 [<ffffffff8179958a>] vfs_write+0x13a/0x4a0 fs/read_write.c:578
 [<ffffffff8179cdbb>] SYSC_write fs/read_write.c:625 [inline]
 [<ffffffff8179cdbb>] SyS_write+0xcb/0x1a0 fs/read_write.c:617
 [<ffffffff85bb50c0>] entry_SYSCALL_64_fastpath+0x23/0xc1
Code: 84 dd fe ff ff 48 b9 00 00 00 00 00 fc ff df 48 01 d2 48 89 d8 48 29 d0 4c 8d 40 fe 49 83 ed 02 48 83 eb 02 4c 89 e8 48 c1 e8 03 <0f> b6 14 08 4c 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 
RIP  [<ffffffff8300076a>] scr_memmovew include/linux/vt_buffer.h:54 [inline]
RIP  [<ffffffff8300076a>] insert_char+0x28a/0x420 drivers/tty/vt/vt.c:550
 RSP <ffff88012953f768>
---[ end trace e481f63f9140c85d ]---