From 614c9750173e412663728215152cc6d12bcb3425 Mon Sep 17 00:00:00 2001 From: Olga Kornievskaia Date: Tue, 9 Mar 2021 09:41:14 -0500 Subject: [PATCH] NFSD: fix dest to src mount in inter-server COPY A cleanup of the inter SSC copy needs to call fput() of the source file handle to make sure that file structure is freed as well as drop the reference on the superblock to unmount the source server. Fixes: 36e1e5ba90fb ("NFSD: Fix use-after-free warning when doing inter-server copy") Signed-off-by: Olga Kornievskaia Signed-off-by: Chuck Lever Tested-by: Dai Ngo --- fs/nfsd/nfs4proc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index acdb3cd806a1..dd9f38d072dd 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -1302,7 +1302,7 @@ nfsd4_cleanup_inter_ssc(struct vfsmount *ss_mnt, struct nfsd_file *src, struct nfsd_file *dst) { nfs42_ssc_close(src->nf_file); - /* 'src' is freed by nfsd4_do_async_copy */ + fput(src->nf_file); nfsd_file_put(dst); mntput(ss_mnt); }