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| author | Christian Brauner <brauner@kernel.org> | 2025-09-29 11:41:16 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2025-09-29 09:08:18 -0700 |
| commit | 6c7ca6a02f8f9549a438a08a23c6327580ecf3d6 (patch) | |
| tree | 393106284b1ae9863edadd8090d22dda52f39577 | |
| parent | Merge tag 'vfs-6.18-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff) | |
| download | linux-6c7ca6a02f8f9549a438a08a23c6327580ecf3d6.tar.gz linux-6c7ca6a02f8f9549a438a08a23c6327580ecf3d6.zip | |
mount: handle NULL values in mnt_ns_release()
When calling in listmount() mnt_ns_release() may be passed a NULL
pointer. Handle that case gracefully.
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/namespace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/namespace.c b/fs/namespace.c index 38609066cf33..1ee17a00c311 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -180,7 +180,7 @@ static void mnt_ns_tree_add(struct mnt_namespace *ns) static void mnt_ns_release(struct mnt_namespace *ns) { /* keep alive for {list,stat}mount() */ - if (refcount_dec_and_test(&ns->passive)) { + if (ns && refcount_dec_and_test(&ns->passive)) { fsnotify_mntns_delete(ns); put_user_ns(ns->user_ns); kfree(ns); |