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 = {