From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D5389511193 for ; Mon, 7 Sep 2026 16:04:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788797081; cv=none; b=q+ybgmNYz+JjhcjXIj9f/Cdi5HAUZ68JmanfpoYNudNXVk0+GjMlkD6fdP4SaJbjaokSA/FaqFp0WTAWDQP2bkO+kIwtjPSaBKoKEc4A+ZbVwr9cvy7TqblpUFkgCmvkWqadOuXF0nKQChLxUjvzsEy2rg9gbkJfXOMvqUP8lrE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788797081; c=relaxed/simple; bh=MasVqhjABiS5jyw8X2SqpczKQ7y0cuB5HpLF/ZVOw4k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EY1Fx1bZ9dNzoho5A7uWEDOvXjKfBVXvJPgnxXNPJzlxNUxL3dxhzab0uYBU8mBUCJPzARvf8gTaxyYAlK1UyP/1UX0do17Wfv0hFbdIkcCYArOddSR581aeFmmMTx6Fk9X1IGTffrqZOS7K3Xmxdo/cM/EPMUpsaura8UfAHcw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Z4YBoivL; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Z4YBoivL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 357841F00A3E; Mon, 7 Sep 2026 16:04:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788797079; bh=Nkbn9YJYqhIQHl7iJeN6vEmKdHOlO5PA+XCLKuHSh4s=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Z4YBoivLOMw/36y0b0ZEOVo2fmJxRMZOxkDZOBWL45eK4FSSuQ+U7e3/XHTNeYqqd CObNdVIxef1RNnC4w8ImHdv+P5KHMYLHin2Hji6UI7wcurYYnZ50uqxl46IhRZqIkt QuoThoY9sLBgbanwEUJrg+VhZ0dJ4cp8I3PUJlHCSkulbgfvSx/hbt2kteiZXrlfhT +sik/wzKF2yaGEY6JgIAAxABnDmZvbemL0/c+Er4l2FyAwNJghWEh4BIvcJgNRO+Gy s1Lv77NZ3z3hkxIw9mJQXLr4VN/jnO+eEvHkMLiq/lNRFMyr0qJQQ4FcInuVS8zKI/ 4I8+0U97GL9HQ== From: Sasha Levin To: stable@vger.kernel.org Cc: Doruk Tan Ozturk , Jiri Kosina , Sasha Levin Subject: [PATCH 7.2.y 2/2] HID: sony: clean up device list on probe failure Date: Mon, 7 Sep 2026 12:04:36 -0400 Message-ID: <20260907160436.4159774-2-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260907160436.4159774-1-sashal@kernel.org> References: <2026090342-yelling-voucher-a519@gregkh> <20260907160436.4159774-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Doruk Tan Ozturk [ Upstream commit 7c65699a3a311198a07659a614fe64d45924839e ] sony_input_configured() adds some controllers to sony_device_list before HID core registers their input devices. input_register_device() can fail after the callback returns successfully. sony_probe() then observes that HID_CLAIMED_INPUT is clear and unwinds, but only stops the HID hardware. The devres-managed sony_sc is freed while its list node remains linked, so the next matching controller traverses freed memory. Initialize the list node and device ID to inactive states. Make list removal idempotent and run the driver-private cleanup on every probe failure path. This also makes a second cleanup safe when sony_input_configured() already unwound a partial initialization before sony_probe() handles the missing input claim. Found by 0sec (https://0sec.ai) using automated source analysis; verified against the HID input registration and probe unwind paths. Fixes: 4f967f6d7374 ("HID: sony: Fix memory issue when connecting device using both Bluetooth and USB") Cc: stable@vger.kernel.org Reported-by: Doruk Tan Ozturk Link: https://lore.kernel.org/linux-input/20260724143925.007D61F00A3A@smtp.kernel.org/ Assisted-by: 0sec:multi-model Signed-off-by: Doruk Tan Ozturk Signed-off-by: Jiri Kosina Signed-off-by: Sasha Levin --- drivers/hid/hid-sony.c | 33 +++++++++++++++++---------------- 1 file changed, 17 insertions(+), 16 deletions(-) diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c index cae5bd7e77dfb..a47ad73970444 100644 --- a/drivers/hid/hid-sony.c +++ b/drivers/hid/hid-sony.c @@ -1984,11 +1984,10 @@ static int sony_check_add_dev_list(struct sony_sc *sc) static void sony_remove_dev_list(struct sony_sc *sc) { - if (sc->list_node.next) { - scoped_guard(spinlock_irqsave, &sony_dev_list_lock) { - list_del(&(sc->list_node)); - } - } + guard(spinlock_irqsave)(&sony_dev_list_lock); + + if (!list_empty(&sc->list_node)) + list_del_init(&sc->list_node); } static int sony_get_bt_devaddr(struct sony_sc *sc) @@ -2123,6 +2122,13 @@ static inline void sony_cancel_work_sync(struct sony_sc *sc) } } +static void sony_cleanup(struct sony_sc *sc) +{ + sony_cancel_work_sync(sc); + sony_remove_dev_list(sc); + sony_release_device_id(sc); +} + static int sony_input_configured(struct hid_device *hdev, struct hid_input *hidinput) { @@ -2296,9 +2302,7 @@ static int sony_input_configured(struct hid_device *hdev, err_close: hid_hw_close(hdev); err_stop: - sony_cancel_work_sync(sc); - sony_remove_dev_list(sc); - sony_release_device_id(sc); + sony_cleanup(sc); return ret; } @@ -2322,6 +2326,8 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id) return -ENOMEM; spin_lock_init(&sc->lock); + INIT_LIST_HEAD(&sc->list_node); + sc->device_id = -1; sc->quirks = quirks; hid_set_drvdata(hdev, sc); @@ -2350,6 +2356,7 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id) ret = hid_hw_start(hdev, connect_mask); if (ret) { hid_err(hdev, "hw start failed\n"); + sony_cleanup(sc); return ret; } @@ -2404,7 +2411,7 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id) err: usb_free_urb(sc->ghl_urb); - + sony_cleanup(sc); hid_hw_stop(hdev); return ret; } @@ -2419,13 +2426,7 @@ static void sony_remove(struct hid_device *hdev) } hid_hw_close(hdev); - - sony_cancel_work_sync(sc); - - sony_remove_dev_list(sc); - - sony_release_device_id(sc); - + sony_cleanup(sc); hid_hw_stop(hdev); } -- 2.53.0