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| author | David S. Miller <davem@davemloft.net> | 2020-04-24 18:26:14 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-04-24 18:26:14 -0700 |
| commit | 167ff131cb3dffccab8bb4d65a8d72e7c5ffc398 (patch) | |
| tree | 4e1748d884532e9386371f9636f52db61eea9d79 /kernel/bpf/syscall.c | |
| parent | 3554e54a46125030c534820c297ed7f6c3907e24 (diff) | |
| parent | e1cebd841b0aa1ceda771706d54a0501986a3c88 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Alexei Starovoitov says:
====================
pull-request: bpf 2020-04-24
The following pull-request contains BPF updates for your *net* tree.
We've added 17 non-merge commits during the last 5 day(s) which contain
a total of 19 files changed, 203 insertions(+), 85 deletions(-).
The main changes are:
1) link_update fix, from Andrii.
2) libbpf get_xdp_id fix, from David.
3) xadd verifier fix, from Jann.
4) x86-32 JIT fixes, from Luke and Wang.
5) test_btf fix, from Stanislav.
6) freplace verifier fix, from Toke.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/syscall.c')
| -rw-r--r-- | kernel/bpf/syscall.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index d85f37239540..7626b8024471 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -2283,7 +2283,7 @@ static void bpf_link_show_fdinfo(struct seq_file *m, struct file *filp) } #endif -const struct file_operations bpf_link_fops = { +static const struct file_operations bpf_link_fops = { #ifdef CONFIG_PROC_FS .show_fdinfo = bpf_link_show_fdinfo, #endif @@ -3628,8 +3628,10 @@ static int link_update(union bpf_attr *attr) return PTR_ERR(link); new_prog = bpf_prog_get(attr->link_update.new_prog_fd); - if (IS_ERR(new_prog)) - return PTR_ERR(new_prog); + if (IS_ERR(new_prog)) { + ret = PTR_ERR(new_prog); + goto out_put_link; + } if (flags & BPF_F_REPLACE) { old_prog = bpf_prog_get(attr->link_update.old_prog_fd); @@ -3638,6 +3640,9 @@ static int link_update(union bpf_attr *attr) old_prog = NULL; goto out_put_progs; } + } else if (attr->link_update.old_prog_fd) { + ret = -EINVAL; + goto out_put_progs; } #ifdef CONFIG_CGROUP_BPF @@ -3653,6 +3658,8 @@ out_put_progs: bpf_prog_put(old_prog); if (ret) bpf_prog_put(new_prog); +out_put_link: + bpf_link_put(link); return ret; } |