6.6-stable review patch. If anyone has any objections, please let me know.
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From: Gleb Korobeynikov gkorobeynikov@astralinux.ru
[ Upstream commit 36bb22a08a69d9984a8399c07310d18b115eae20 ]
Replace the always-true check tcon->origin_fullpath with check of server->leaf_fullpath
See https://bugzilla.kernel.org/show_bug.cgi?id=219083
The check of the new @tcon will always be true during mounting, since @tcon->origin_fullpath will only be set after the tree is connected to the latest common resource, as well as checking if the prefix paths from it are fully accessible.
Fixes: 3ae872de4107 ("smb: client: fix shared DFS root mounts with different prefixes") Reviewed-by: Paulo Alcantara (Red Hat) pc@manguebit.com Signed-off-by: Gleb Korobeynikov gkorobeynikov@astralinux.ru Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/smb/client/misc.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/fs/smb/client/misc.c b/fs/smb/client/misc.c index 07c468ddb88a8..65d4b72b4d51a 100644 --- a/fs/smb/client/misc.c +++ b/fs/smb/client/misc.c @@ -1288,6 +1288,7 @@ int cifs_inval_name_dfs_link_error(const unsigned int xid, const char *full_path, bool *islink) { + struct TCP_Server_Info *server = tcon->ses->server; struct cifs_ses *ses = tcon->ses; size_t len; char *path; @@ -1304,12 +1305,12 @@ int cifs_inval_name_dfs_link_error(const unsigned int xid, !is_tcon_dfs(tcon)) return 0;
- spin_lock(&tcon->tc_lock); - if (!tcon->origin_fullpath) { - spin_unlock(&tcon->tc_lock); + spin_lock(&server->srv_lock); + if (!server->leaf_fullpath) { + spin_unlock(&server->srv_lock); return 0; } - spin_unlock(&tcon->tc_lock); + spin_unlock(&server->srv_lock);
/* * Slow path - tcon is DFS and @full_path has prefix path, so attempt