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| author | David Howells <dhowells@redhat.com> | 2019-05-15 14:09:17 +0300 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2019-05-15 14:32:34 +0300 |
| commit | a1b879eefc2b34cd3f17187ef6fc1cf3960e9518 (patch) | |
| tree | 749a872254c15ad9de5a0e17a895d7d553321e99 | |
| parent | 80f232121b69cc69a31ccb2b38c1665d770b0710 (diff) | |
| download | linux-a1b879eefc2b34cd3f17187ef6fc1cf3960e9518.tar.xz | |
afs: Fix key leak in afs_release() and afs_evict_inode()
Fix afs_release() to go through the cleanup part of the function if
FMODE_WRITE is set rather than exiting through vfs_fsync() (which skips the
cleanup). The cleanup involves discarding the refs on the key used for
file ops and the writeback key record.
Also fix afs_evict_inode() to clean up any left over wb keys attached to
the inode/vnode when it is removed.
Fixes: 5a8132761609 ("afs: Do better accretion of small writes on newly created content")
Signed-off-by: David Howells <dhowells@redhat.com>
| -rw-r--r-- | fs/afs/file.c | 7 | ||||
| -rw-r--r-- | fs/afs/inode.c | 1 |
2 files changed, 5 insertions, 3 deletions
diff --git a/fs/afs/file.c b/fs/afs/file.c index e8d6619890a9..b0a43e250a9b 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -170,11 +170,12 @@ int afs_release(struct inode *inode, struct file *file) { struct afs_vnode *vnode = AFS_FS_I(inode); struct afs_file *af = file->private_data; + int ret = 0; _enter("{%llx:%llu},", vnode->fid.vid, vnode->fid.vnode); if ((file->f_mode & FMODE_WRITE)) - return vfs_fsync(file, 0); + ret = vfs_fsync(file, 0); file->private_data = NULL; if (af->wb) @@ -182,8 +183,8 @@ int afs_release(struct inode *inode, struct file *file) key_put(af->key); kfree(af); afs_prune_wb_keys(vnode); - _leave(" = 0"); - return 0; + _leave(" = %d", ret); + return ret; } /* diff --git a/fs/afs/inode.c b/fs/afs/inode.c index c4652b42d545..f30aa5eacd39 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -573,6 +573,7 @@ void afs_evict_inode(struct inode *inode) } #endif + afs_prune_wb_keys(vnode); afs_put_permits(rcu_access_pointer(vnode->permit_cache)); key_put(vnode->silly_key); vnode->silly_key = NULL; |