On Tue, Oct 08, 2024 at 12:46:48AM +0800, I Hsin Cheng wrote: > Fix integer overflow issue discovered by coverity scan, where > "bpf_program_fd()" might return a value less than zero. Assignment of > "prog_fd" to "kern_data" will result in integer overflow in that case. > > Do a pre-check after the program fd is returned, if it's negative we > should ignore this program and move on, or maybe add some error handling > mechanism here. We already had a mechanism there - the one you'd just disabled. Namely, storing an unsigned long value with MSB set at given offset.
