Re: [PATCH v3] bpf: core: fix shift-out-of-bounds in ___bpf_prog_run

On Wed, Jun 02, 2021 at 09:27:26PM +0000, Kurt Manucredo wrote:

UBSAN: shift-out-of-bounds in kernel/bpf/core.c:1414:2
shift exponent 248 is too large for 32-bit type 'unsigned int'

I'm sorry, but I still do not understand what this changelog text means.

Please be very descriptive about what you are doing and why you are
doing it.  All that is here is a message from a random tool :(

thanks,
greg k-h