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8b365b3c68
Includes the following test cases: - a test showing that zero extension flags do not propagate through state pruning in the unpatched kernel. - a 32-bit subregister consumed by MOV32 and ALU32 operations (never zext'ed); - a 64-bit MOV (never zext'ed); - a narrow (32-bit) BPF_LDX load whose result is read as 64-bit; - 32-bit atomic fetch_add and cmpxchg whose result is read as 64-bit; - a CFG case where a 32-bit definition's upper half is used only on one of two branches; - no zext for dead registers; - LD_ABS defines only lower 32 bits, hence needs zext when the result is used as 64-bits; - helper, kfunc and subprogram parameters are considered to use full 64 bits; - a 32-bit subregister consumed by JMP32 (X/K) operations; - a 32-bit subregister consumed by JMP (X/K) operations; - a 64-bit register consumed by both JMP and JMP32 operations (never zext'ed); - ALU64 and address space cast operations on arena pointers; - memory loads using BPF_PROBE_MEM instructions. Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20260807-static-zext-v4-7-b6c270013c77@gmail.com |
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| .. | ||
| accounting | ||
| arch | ||
| bootconfig | ||
| bpf | ||
| build | ||
| certs | ||
| cgroup | ||
| counter | ||
| crypto | ||
| debugging | ||
| dma | ||
| docs | ||
| firewire | ||
| firmware | ||
| gpio | ||
| hv | ||
| iio | ||
| include | ||
| kvm/kvm_stat | ||
| laptop | ||
| leds | ||
| lib | ||
| memory-model | ||
| mm | ||
| net | ||
| objtool | ||
| pcmcia | ||
| perf | ||
| power | ||
| rcu | ||
| sched | ||
| sched_ext | ||
| scripts | ||
| sound | ||
| spi | ||
| testing | ||
| thermal | ||
| time | ||
| tracing | ||
| unittests | ||
| usb | ||
| verification | ||
| virtio | ||
| wmi | ||
| workqueue | ||
| writeback | ||
| Makefile | ||