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| author |  Jiri Olsa <jolsa@kernel.org>
| 2023-09-15 12:14:20 +0200 |
|---|---|---|
| committer |  Alexei Starovoitov <ast@kernel.org>
| 2023-09-15 10:32:40 -0700 |
| commit | 57eb5e1c5c57972c95e8efab6bc81b87161b0b07 (patch) | |
| tree | 56521ac482ff38002520275cb9a7c199a8c683a0 /kernel | |
| parent | bpf: Skip unit_size checking for global per-cpu allocator (diff) | |
| download | linux-57eb5e1c5c57972c95e8efab6bc81b87161b0b07.tar.gz linux-57eb5e1c5c57972c95e8efab6bc81b87161b0b07.tar.bz2 linux-57eb5e1c5c57972c95e8efab6bc81b87161b0b07.zip | |
bpf: Fix uprobe_multi get_pid_task error path
Dan reported Smatch static checker warning due to missing error
value set in uprobe multi link's get_pid_task error path.
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/bpf/c5ffa7c0-6b06-40d5-aca2-63833b5cd9af@moroto.mountain/
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Reviewed-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20230915101420.1193800-1-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/bpf_trace.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index c1c1af63ced2..868008f56fec 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -3223,8 +3223,10 @@ int bpf_uprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *pr rcu_read_lock(); task = get_pid_task(find_vpid(pid), PIDTYPE_PID); rcu_read_unlock(); - if (!task) + if (!task) { + err = -ESRCH; goto error_path_put; + } } err = -ENOMEM; |