Messages in this thread Patch in this message | | | Subject | [PATCH 6/6] proc: Set correct userns for new proc super created by a new pid_namespace | From | David Howells <> | Date | Tue, 21 Aug 2018 10:55:37 +0100 |
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From: Andrei Vagin <avagin@openvz.org>
Fix the setting up a new proc superblock for a new pid_namespace such that the user_ns for that proc superblock needs to be taken from the new pid_namespace and not the active process.
Signed-off-by: Andrei Vagin <avagin@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com> ---
fs/proc/root.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/fs/proc/root.c b/fs/proc/root.c index 1d6e5bfa30cc..1419b48a89ab 100644 --- a/fs/proc/root.c +++ b/fs/proc/root.c @@ -315,6 +315,11 @@ int pid_ns_prepare_proc(struct pid_namespace *ns) if (IS_ERR(fc)) return PTR_ERR(fc); + if (fc->user_ns != ns->user_ns) { + put_user_ns(fc->user_ns); + fc->user_ns = get_user_ns(ns->user_ns); + } + ctx = fc->fs_private; if (ctx->pid_ns != ns) { put_pid_ns(ctx->pid_ns);
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