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| author | Xu Kuohai <xukuohai@huawei.com> | 2024-04-16 09:42:07 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2024-04-16 18:19:30 +0300 |
| commit | dc7d7447b56bcc9cf79a9c22e4edad200a298e4c (patch) | |
| tree | 584898bf8b410c67966a7586f587c09eeb7d0a5c /mm/mmap_lock.c | |
| parent | 37eacb9f6e89fb399a79e952bc9c78eb3e16290e (diff) | |
| download | linux-dc7d7447b56bcc9cf79a9c22e4edad200a298e4c.tar.xz | |
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: efc9909fdce0 ("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
Diffstat (limited to 'mm/mmap_lock.c')
0 files changed, 0 insertions, 0 deletions