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authorPranith Kumar K <pranithk@gluster.com>2012-02-02 19:17:12 +0530
committerVijay Bellur <vijay@gluster.com>2012-02-22 04:14:32 -0800
commit064bd0f25a02bd65e32a1c03bfb124340dd60651 (patch)
treec2822643db1435fa02337221cc9bee9279443e2f /xlators
parent2b52b096a7db3124fdd97554e63792f36e889af9 (diff)
cluster/afr: Don't trust the fd returned in open_cbk
Change-Id: Id7d85a38875e3675904fc134e54e723c6a0c4de2 BUG: 786766 Signed-off-by: Pranith Kumar K <pranithk@gluster.com> Reviewed-on: http://review.gluster.com/2792 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
Diffstat (limited to 'xlators')
-rw-r--r--xlators/cluster/afr/src/afr-open.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/xlators/cluster/afr/src/afr-open.c b/xlators/cluster/afr/src/afr-open.c
index 739def351..a203a36f9 100644
--- a/xlators/cluster/afr/src/afr-open.c
+++ b/xlators/cluster/afr/src/afr-open.c
@@ -317,6 +317,7 @@ afr_openfd_fix_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int child_index = (long) cookie;
struct list_head paused_calls = {0};
gf_boolean_t fop_paused = _gf_false;
+ fd_t *local_fd = NULL;
priv = this->private;
local = frame->local;
@@ -328,18 +329,19 @@ afr_openfd_fix_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
priv->children[child_index]->name);
}
+ local_fd = fd_ref (local->fd);
call_count = afr_frame_return (frame);
//Note: Do not access any thing using the frame outside call_count 0
//Note: No frame locking needed for this block of code
- fd_ctx = afr_fd_ctx_get (fd, this);
+ fd_ctx = afr_fd_ctx_get (local_fd, this);
if (!fd_ctx) {
gf_log (this->name, GF_LOG_WARNING,
- "failed to get fd context, %p", fd);
+ "failed to get fd context, %p", local_fd);
goto out;
}
- LOCK (&fd->lock);
+ LOCK (&local_fd->lock);
{
if (op_ret >= 0) {
fd_ctx->opened_on[child_index] = AFR_FD_OPENED;
@@ -351,7 +353,7 @@ afr_openfd_fix_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
afr_get_resumable_calls (this, fd_ctx, &paused_calls);
}
}
- UNLOCK (&fd->lock);
+ UNLOCK (&local_fd->lock);
out:
if (call_count == 0) {
afr_resume_calls (this, &paused_calls);
@@ -366,6 +368,7 @@ out:
}
done:
+ fd_unref (local_fd);
return 0;
}