Reject cBPF shifts > 31 - #51
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cBPF only allows right or left shifts up to 31 bits (as the registers are 32 bits). The kernel rejects programs with bigger shifts. Reject them too: otherwise we emit eBPF code that will also fail to load.
Dhiver
approved these changes
Aug 28, 2026
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cBPF only allows right or left shifts up to 31 bits (as the registers are 32 bits). The kernel rejects programs with bigger shifts.
Reject them too: otherwise we emit eBPF code that will also fail to load.