kmalloc_track_caller
ctx.cur_val = kmalloc_track_caller(ctx.cur_len, GFP_KERNEL);
ctx.new_val = kmalloc_track_caller(PAGE_SIZE, GFP_KERNEL);
p = kmalloc_track_caller(first+1, gfp);
ptr = kmalloc_track_caller(size, GFP_KERNEL);
buf = kmalloc_track_caller(len + 1, gfp);
data64 = kmalloc_track_caller(optlen + 4, GFP_USER | __GFP_NOWARN);