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| author | Christian Brauner <brauner@kernel.org> | 2025-09-29 11:41:16 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-19 16:37:44 +0200 |
| commit | 99ae3e70a293834d0274c46a37120c71a24a4995 (patch) | |
| tree | 4bf79584f6f7afb2793c583f85a2bf8d774e0b1c /fs/namespace.c | |
| parent | bf0fbf5e8b0aff8a4a0fb35e32b10083baa83c04 (diff) | |
| download | linux-99ae3e70a293834d0274c46a37120c71a24a4995.tar.gz linux-99ae3e70a293834d0274c46a37120c71a24a4995.tar.bz2 linux-99ae3e70a293834d0274c46a37120c71a24a4995.zip | |
mount: handle NULL values in mnt_ns_release()
[ Upstream commit 6c7ca6a02f8f9549a438a08a23c6327580ecf3d6 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/namespace.c')
| -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 fc4cbbefa70e..c8c2376bb242 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); |