Xu Kuohai dc7d7447b5 bpf, arm64: Fix incorrect runtime stats ...

When __bpf_prog_enter() returns zero, the arm64 register x20 that stores
prog start time is not assigned to zero, causing incorrect runtime stats.

To fix it, assign the return value of bpf_prog_enter() to x20 register
immediately upon its return.

Fixes: efc9909fdc ("bpf, arm64: Add bpf trampoline for arm64")
Reported-by: Ivan Babrou <ivan@cloudflare.com>
Signed-off-by: Xu Kuohai <xukuohai@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Ivan Babrou <ivan@cloudflare.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20240416064208.2919073-2-xukuohai@huaweicloud.com

2024-04-16 17:19:30 +02:00

..

bpf_jit_comp.c

bpf, arm64: Fix incorrect runtime stats

2024-04-16 17:19:30 +02:00

bpf_jit.h

bpf, arm64: Support signed div/mod instructions

2023-08-18 15:46:35 +02:00

Makefile

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21 10:50:46 +02:00