FAILED: patch "[PATCH] dmaengine: idxd: Add missing idxd cleanup to fix memory leak" failed to apply to 5.15-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y
git checkout FETCH_HEAD
git cherry-pick -x d5449ff1b04dfe9ed8e455769aa01e4c2ccf6805
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2025051922-ozone-overpass-e4e1@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From d5449ff1b04dfe9ed8e455769aa01e4c2ccf6805 Mon Sep 17 00:00:00 2001
From: Shuai Xue <xueshuai@linux.alibaba.com>
Date: Fri, 4 Apr 2025 20:02:16 +0800
Subject: [PATCH] dmaengine: idxd: Add missing idxd cleanup to fix memory leak
 in remove call

The remove call stack is missing idxd cleanup to free bitmap, ida and
the idxd_device. Call idxd_free() helper routines to make sure we exit
gracefully.

Fixes: bfe1d56091c1 ("dmaengine: idxd: Init and probe for Intel data accelerators")
Cc: stable@vger.kernel.org
Suggested-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com>
Reviewed-by: Fenghua Yu <fenghuay@nvidia.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20250404120217.48772-9-xueshuai@linux.alibaba.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c
index f2b5b17538c0..974b926bd930 100644
--- a/drivers/dma/idxd/init.c
+++ b/drivers/dma/idxd/init.c
@@ -1335,6 +1335,7 @@ static void idxd_remove(struct pci_dev *pdev)
 	destroy_workqueue(idxd->wq);
 	perfmon_pmu_remove(idxd);
 	put_device(idxd_confdev(idxd));
+	idxd_free(idxd);
 }
 
 static struct pci_driver idxd_pci_driver = {