Subject: FAILED: patch "[PATCH] mfd: sm501: Fix potential memory leaks during remove" failed to apply to 5.15-stable tree
To: nihaal@cse.iitm.ac.in,lee@kernel.org
Cc: <stable@vger.kernel.org>
From: <gregkh@linuxfoundation.org>
Date: Thu, 03 Sep 2026 17:12:52 +0200
Message-ID: <2026090352-reptile-skyline-e58f@gregkh>
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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 83feedd9d83c0c5199f98c72df0a6196b4aefb4d
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026090352-reptile-skyline-e58f@gregkh' --subject-prefix 'PATCH 5.15.y' 'HEAD^..'

Possible dependencies:


thanks,

greg k-h

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

From 83feedd9d83c0c5199f98c72df0a6196b4aefb4d Mon Sep 17 00:00:00 2001
From: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Date: Mon, 20 Jul 2026 17:08:32 +0530
Subject: [PATCH] mfd: sm501: Fix potential memory leaks during remove

The memory allocated for struct sm501_devdata in sm501_pci_probe() and
sm501_plat_probe() is not freed by the corresponding remove functions
sm501_pci_remove() and sm501_plat_remove(). Fix that by adding a call to
kfree().

Fixes: b6d6454fdb66 ("[PATCH] mfd: SM501 core driver")
Cc: stable@vger.kernel.org
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Link: https://patch.msgid.link/20260720113836.73133-1-nihaal@cse.iitm.ac.in
Signed-off-by: Lee Jones <lee@kernel.org>

diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
index b5bda477ebfc..77888965d91e 100644
--- a/drivers/mfd/sm501.c
+++ b/drivers/mfd/sm501.c
@@ -1627,6 +1627,7 @@ static void sm501_pci_remove(struct pci_dev *dev)
 	release_mem_region(sm->io_res->start, 0x100);
 
 	pci_disable_device(dev);
+	kfree(sm);
 }
 
 static void sm501_plat_remove(struct platform_device *dev)
@@ -1637,6 +1638,7 @@ static void sm501_plat_remove(struct platform_device *dev)
 	iounmap(sm->regs);
 
 	release_mem_region(sm->io_res->start, 0x100);
+	kfree(sm);
 }
 
 static const struct pci_device_id sm501_pci_tbl[] = {