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authorPranith Kumar K <pkarampu@redhat.com>2018-02-28 17:58:31 +0530
committerShyamsundar Ranganathan <srangana@redhat.com>2018-03-03 04:33:26 +0000
commitde000fd58d783e8a8fce3a6c7f5b85be3c1b7178 (patch)
tree246854ba951da9e46fa363906d9ba20cff4a71c2
parentcec4c7f19b7b8cfd69fb439201658b654dcb4168 (diff)
cluster/afr: Fix dict-leak in pre-op
At the time of pre-op, pre_op_xdata is populted with the xattrs we get from the disk and at the time of post-op it gets over-written without unreffing the previous value stored leading to a leak. This is a regression we missed in https://review.gluster.org/#/q/ba149bac92d169ae2256dbc75202dc9e5d06538e >BUG: 1550078 >Change-Id: I0456f9ad6f77ce6248b747964a037193af3a3da7 >Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> >(cherry picked from commit e7b79c59590c203c65f7ac8548b30d068c232d33) BUG: 1550808 Change-Id: I0456f9ad6f77ce6248b747964a037193af3a3da7
-rw-r--r--xlators/cluster/afr/src/afr-common.c16
-rw-r--r--xlators/cluster/afr/src/afr-transaction.c20
-rw-r--r--xlators/cluster/afr/src/afr.h4
3 files changed, 20 insertions, 20 deletions
diff --git a/xlators/cluster/afr/src/afr-common.c b/xlators/cluster/afr/src/afr-common.c
index 96419c6..ea3df12 100644
--- a/xlators/cluster/afr/src/afr-common.c
+++ b/xlators/cluster/afr/src/afr-common.c
@@ -1033,7 +1033,7 @@ afr_readables_fill (call_frame_t *frame, xlator_t *this, inode_t *inode,
xdata = replies[i].xdata;
ia_type = replies[i].poststat.ia_type;
} else {/* pre-op xattrop */
- xdata = local->transaction.pre_op_xdata[i];
+ xdata = local->transaction.changelog_xdata[i];
ia_type = inode->ia_type;
}
@@ -1764,13 +1764,13 @@ afr_local_transaction_cleanup (afr_local_t *local, xlator_t *this)
GF_FREE (local->transaction.pre_op);
GF_FREE (local->transaction.pre_op_sources);
- if (local->transaction.pre_op_xdata) {
+ if (local->transaction.changelog_xdata) {
for (i = 0; i < priv->child_count; i++) {
- if (!local->transaction.pre_op_xdata[i])
+ if (!local->transaction.changelog_xdata[i])
continue;
- dict_unref (local->transaction.pre_op_xdata[i]);
+ dict_unref (local->transaction.changelog_xdata[i]);
}
- GF_FREE (local->transaction.pre_op_xdata);
+ GF_FREE (local->transaction.changelog_xdata);
}
GF_FREE (local->transaction.eager_lock);
@@ -5603,10 +5603,10 @@ afr_transaction_local_init (afr_local_t *local, xlator_t *this)
if (!local->transaction.pre_op)
goto out;
- local->transaction.pre_op_xdata =
- GF_CALLOC (sizeof (*local->transaction.pre_op_xdata),
+ local->transaction.changelog_xdata =
+ GF_CALLOC (sizeof (*local->transaction.changelog_xdata),
priv->child_count, gf_afr_mt_dict_t);
- if (!local->transaction.pre_op_xdata)
+ if (!local->transaction.changelog_xdata)
goto out;
if (priv->arbiter_count == 1) {
diff --git a/xlators/cluster/afr/src/afr-transaction.c b/xlators/cluster/afr/src/afr-transaction.c
index 3e5326b..1f4ba71 100644
--- a/xlators/cluster/afr/src/afr-transaction.c
+++ b/xlators/cluster/afr/src/afr-transaction.c
@@ -276,9 +276,9 @@ afr_compute_pre_op_sources (call_frame_t *frame, xlator_t *this)
matrix = ALLOC_MATRIX (priv->child_count, int);
for (i = 0; i < priv->child_count; i++) {
- if (!local->transaction.pre_op_xdata[i])
+ if (!local->transaction.changelog_xdata[i])
continue;
- xdata = local->transaction.pre_op_xdata[i];
+ xdata = local->transaction.changelog_xdata[i];
afr_selfheal_fill_matrix (this, matrix, i, idx, xdata);
}
@@ -295,13 +295,6 @@ afr_compute_pre_op_sources (call_frame_t *frame, xlator_t *this)
for (j = 0; j < priv->child_count; j++)
if (matrix[i][j] != 0)
local->transaction.pre_op_sources[j] = 0;
-
- /*We don't need the xattrs any more. */
- for (i = 0; i < priv->child_count; i++)
- if (local->transaction.pre_op_xdata[i]) {
- dict_unref (local->transaction.pre_op_xdata[i]);
- local->transaction.pre_op_xdata[i] = NULL;
- }
}
gf_boolean_t
@@ -1173,7 +1166,7 @@ afr_changelog_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
}
if (xattr)
- local->transaction.pre_op_xdata[child_index] = dict_ref (xattr);
+ local->transaction.changelog_xdata[child_index] = dict_ref (xattr);
call_count = afr_frame_return (frame);
@@ -1603,6 +1596,13 @@ afr_changelog_do (call_frame_t *frame, xlator_t *this, dict_t *xattr,
local = frame->local;
priv = this->private;
+ for (i = 0; i < priv->child_count; i++) {
+ if (local->transaction.changelog_xdata[i]) {
+ dict_unref (local->transaction.changelog_xdata[i]);
+ local->transaction.changelog_xdata[i] = NULL;
+ }
+ }
+
ret = afr_changelog_prepare (this, frame, &call_count, changelog_resume,
op, &xdata, &newloc_xdata);
diff --git a/xlators/cluster/afr/src/afr.h b/xlators/cluster/afr/src/afr.h
index 9f4e34a..fdda295 100644
--- a/xlators/cluster/afr/src/afr.h
+++ b/xlators/cluster/afr/src/afr.h
@@ -749,8 +749,8 @@ typedef struct _afr_local {
unsigned char *pre_op;
- /* For arbiter configuration only. */
- dict_t **pre_op_xdata;
+ /* Changelog xattr dict for [f]xattrop*/
+ dict_t **changelog_xdata;
unsigned char *pre_op_sources;
/* @failed_subvols: subvolumes on which a pre-op or a