diff options
Diffstat (limited to 'kernel/bpf/inode.c')
| -rw-r--r-- | kernel/bpf/inode.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/kernel/bpf/inode.c b/kernel/bpf/inode.c index 25c06a011825..188c774a469c 100644 --- a/kernel/bpf/inode.c +++ b/kernel/bpf/inode.c @@ -766,10 +766,18 @@ static void bpf_destroy_inode(struct inode *inode) { enum bpf_type type; - if (S_ISLNK(inode->i_mode)) - kfree(inode->i_link); if (!bpf_inode_type(inode, &type)) bpf_any_put(inode->i_private, type); +} + +/* + * Called after RCU grace period - safe to free inode and anything + * that might be accessed by RCU pathwalk (inode fields, i_link). + */ +static void bpf_free_inode(struct inode *inode) +{ + if (S_ISLNK(inode->i_mode)) + kfree(inode->i_link); free_inode_nonrcu(inode); } @@ -778,6 +786,7 @@ const struct super_operations bpf_super_ops = { .drop_inode = inode_just_drop, .show_options = bpf_show_options, .destroy_inode = bpf_destroy_inode, + .free_inode = bpf_free_inode, }; enum { |