A maliciously crafted file system can cause an overflow when the
results of a 64-bit calculation is stored into a 32-bit length
parameter.

https://bugzilla.kernel.org/show_bug.cgi?id=200623Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
Reported-by: NWen Xu <wen.xu@gatech.edu>
Cc: stable@vger.kernel.org