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From 08c57926118b1ab8fa1fcd5b16913ff22d97d065 Mon Sep 17 00:00:00 2001
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From: N Balachandran <nbalacha@redhat.com>
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Date: Wed, 25 Sep 2019 19:50:27 +0530
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Subject: [PATCH 547/584] perf/write-behind: Clear frame->local on conflict
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error
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WB saves the wb_inode in frame->local for the truncate and
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ftruncate fops. This value is not cleared in case of error
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on a conflicting write request. FRAME_DESTROY finds a non-null
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frame->local and tries to free it using mem_put. However,
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wb_inode is allocated using GF_CALLOC, causing the
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process to crash.
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credit: vpolakis@gmail.com
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Upstream Patch: https://review.gluster.org/#/c/glusterfs/+/23485/
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>Change-Id: I217f61470445775e05145aebe44c814731c1b8c5
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>Fixes: bz#1753592
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>Signed-off-by: N Balachandran <nbalacha@redhat.com>
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BUG: 1917488
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Change-Id: I217f61470445775e05145aebe44c814731c1b8c5
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Signed-off-by: Sunil Kumar H G <sheggodu@redhat.com>
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Reviewed-on: https://code.engineering.redhat.com/gerrit/c/rhs-glusterfs/+/244277
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Tested-by: RHGS Build Bot <nigelb@redhat.com>
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---
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xlators/performance/write-behind/src/write-behind.c | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/xlators/performance/write-behind/src/write-behind.c b/xlators/performance/write-behind/src/write-behind.c
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index 90a0bcf..31ab723 100644
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--- a/xlators/performance/write-behind/src/write-behind.c
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+++ b/xlators/performance/write-behind/src/write-behind.c
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@@ -1523,6 +1523,10 @@ __wb_handle_failed_conflict(wb_request_t *req, wb_request_t *conflict,
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*/
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req->op_ret = -1;
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req->op_errno = conflict->op_errno;
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+ if ((req->stub->fop == GF_FOP_TRUNCATE) ||
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+ (req->stub->fop == GF_FOP_FTRUNCATE)) {
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+ req->stub->frame->local = NULL;
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+ }
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list_del_init(&req->todo);
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list_add_tail(&req->winds, tasks);
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--
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1.8.3.1
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