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bpf/tests: Add test of LDX_MEM with operand aliasing
authorJohan Almbladh <johan.almbladh@anyfinetworks.com>
Fri, 1 Oct 2021 13:03:48 +0000 (15:03 +0200)
committerDaniel Borkmann <daniel@iogearbox.net>
Fri, 1 Oct 2021 15:04:26 +0000 (17:04 +0200)
commit7bceeb95726b105bd4241c9635acc0836df675d4
tree7f6955897ae8836d68b6a8f91ed100fb7c33490ctree | snapshot
parent68813605dea69ca0af26af7dd00384c78c1df05dcommit | diff
bpf/tests: Add test of LDX_MEM with operand aliasing

This patch adds a set of tests of BPF_LDX_MEM where both operand registers
are the same register. Mainly testing 32-bit JITs that may load a 64-bit
value in two 32-bit loads, and must not overwrite the address register.

Signed-off-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211001130348.3670534-11-johan.almbladh@anyfinetworks.com
lib/test_bpf.c diff | blob | history
Domain: System / Kernel;