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BUG: KASAN: user-memory-access in memset include/linux/string.h:330 [inline]
BUG: KASAN: user-memory-access in bitmap_zero include/linux/bitmap.h:208 [inline]
BUG: KASAN: user-memory-access in n_tty_set_termios+0x106/0xe80 drivers/tty/n_tty.c:1784
Write of size 512 at addr 0000000000001060 by task syz-executor0/10926

CPU: 0 PID: 10926 Comm: syz-executor0 Not tainted 4.18.0-rc6+ #164
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 ? dump_stack_print_info