This is bug fix. Notifier callback is called from SUNRPC module. So before dereferencing NFS module we have to make sure, that it's alive.
Signed-off-by: Stanislav Kinsbursky <[email protected]> --- fs/nfs/idmap.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index c9c3e1b..f55b80a 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -557,12 +557,16 @@ static int rpc_pipefs_event(struct notifier_block *nb, unsigned long event, struct nfs_client *clp; int error = 0; + if (!try_module_get(THIS_MODULE)) + return 0; + while ((clp = nfs_get_client_for_event(sb->s_fs_info, event))) { error = __rpc_pipefs_event(clp, event, sb); nfs_put_client(clp); if (error) break; } + module_put(THIS_MODULE); return error; } _______________________________________________ Devel mailing list [email protected] https://openvz.org/mailman/listinfo/devel
