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| author | Dai Ngo <dai.ngo@oracle.com> | 2023-01-24 06:34:13 +0100 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2023-02-20 15:20:52 +0100 |
| commit | 34e8f9ec4c9ac235f917747b23a200a5e0ec857b (patch) | |
| tree | ae138483199dc790afca1a580fccc5e3536ac24d /fs/nfsd | |
| parent | nfsd: clean up potential nfsd_file refcount leaks in COPY codepath (diff) | |
| download | linux-34e8f9ec4c9ac235f917747b23a200a5e0ec857b.tar.xz linux-34e8f9ec4c9ac235f917747b23a200a5e0ec857b.zip | |
NFSD: fix leaked reference count of nfsd4_ssc_umount_item
The reference count of nfsd4_ssc_umount_item is not decremented
on error conditions. This prevents the laundromat from unmounting
the vfsmount of the source file.
This patch decrements the reference count of nfsd4_ssc_umount_item
on error.
Fixes: f4e44b393389 ("NFSD: delay unmount source's export after inter-server copy completed.")
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs4proc.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index c9057462b973..57f791899de3 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -1813,13 +1813,17 @@ out: release_copy_files(copy); return status; out_err: + if (nfsd4_ssc_is_inter(copy)) { + /* + * Source's vfsmount of inter-copy will be unmounted + * by the laundromat. Use copy instead of async_copy + * since async_copy->ss_nsui might not be set yet. + */ + refcount_dec(©->ss_nsui->nsui_refcnt); + } if (async_copy) cleanup_async_copy(async_copy); status = nfserrno(-ENOMEM); - /* - * source's vfsmount of inter-copy will be unmounted - * by the laundromat - */ goto out; } |