Luke Nelson 6fa632e719 bpf, x32: Fix bug with ALU64 {LSH, RSH, ARSH} BPF_K shift by 0 ... The current x32 BPF JIT does not correctly compile shift operations when the immediate shift amount is 0. The expected behavior is for this to be a no-op. The following program demonstrates the bug. The expexceted result is 1, but the current JITed code returns 2. r0 = 1 r1 = 1 r1 <<= 0 if r1 == 1 goto end r0 = 2 end: exit This patch simplifies the code and fixes the bug. Fixes: 03f5781be2 ("bpf, x86_32: add eBPF JIT compiler for ia32") Co-developed-by: Xi Wang <xi.wang@gmail.com> Signed-off-by: Xi Wang <xi.wang@gmail.com> Signed-off-by: Luke Nelson <luke.r.nels@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>		2019-07-03 11:14:28 +02:00
..
bpf_jit_comp32.c	bpf, x32: Fix bug with ALU64 {LSH, RSH, ARSH} BPF_K shift by 0	2019-07-03 11:14:28 +02:00
bpf_jit_comp.c	bpf, x64: fix stack layout of JITed bpf code	2019-06-14 18:02:25 -07:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00