diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2023-08-09 10:34:17 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-08-21 15:51:25 -0700 |
| commit | b733eeade4204423711793595c3c8d78a2fa8b2e (patch) | |
| tree | a3bcec5145f10a15ebfca117823318529167f6f8 /kernel/bpf/syscall.c | |
| parent | 0b779b61f651851df5c5c42938a6c441eb1b5100 (diff) | |
bpf: Add pid filter support for uprobe_multi link
Adding support to specify pid for uprobe_multi link and the uprobes
are created only for task with given pid value.
Using the consumer.filter filter callback for that, so the task gets
filtered during the uprobe installation.
We still need to check the task during runtime in the uprobe handler,
because the handler could get executed if there's another system
wide consumer on the same uprobe (thanks Oleg for the insight).
Cc: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230809083440.3209381-6-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/bpf/syscall.c')
| -rw-r--r-- | kernel/bpf/syscall.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index ef17cd05262e..10666d17b9e3 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -4882,7 +4882,7 @@ err_put: return err; } -#define BPF_LINK_CREATE_LAST_FIELD link_create.uprobe_multi.flags +#define BPF_LINK_CREATE_LAST_FIELD link_create.uprobe_multi.pid static int link_create(union bpf_attr *attr, bpfptr_t uattr) { struct bpf_prog *prog; |