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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: linux-wpan@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH] ieee802154: atusb: drop the URB reference after a failed resubmit Date: Wed, 4 Nov 2026 02:14:58 +0000 Message-Id: <20261104021458.1468481-1-vulab@iscas.ac.cn> X-Mailer: git-send-email 2.34.1 X-Mailing-List: netdev@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:qwCowADXxf8ZlepqMHY+AA--.9580S2 X-Coremail-Antispam: 1UD129KBjvdXoW7JryUKFWfKFW7Zw15Kw4UJwb_yoWkXFX_Kr ySvF93Xry5CFsFk3W5AFsxZrWvk3ZFqFs3ZFWagayfJ3yYyF1I9F40yas8Gw4UGrsIvF9x JwnxJr4Ut34SgjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbTAYjsxI4VWkCwAYFVCjjxCrM7CY07I20VC2zVCF04k26cxKx2IY s7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4 kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_ Gr1j6F4UJwA2z4x0Y4vEx4A2jsIE14v26F4UJVW0owA2z4x0Y4vEx4A2jsIEc7CjxVAFwI 0_GcCE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2Wl Yx0E2Ix0cI8IcVAFwI0_Wrv_ZF1lYx0Ex4A2jsIE14v26r4UJVWxJr1lOx8S6xCaFVCjc4 AY6r1j6r4UM4x0Y48IcxkI7VAKI48JM4IIrI8v6xkF7I0E8cxan2IY04v7MxkF7I0En4kS 14v26r1q6r43MxAIw28IcxkI7VAKI48JMxAIw28IcVCjz48v1sIEY20_Gr43Wr1UJr1l4I 8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AK xVWUGVWUWwC2zVAF1VAY17CE14v26r1q6r43MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcV AFwI0_Xr0_Ar1lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4UJVWxJr1lIxAIcVCF04k26cxK x2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r4j6F4UMIIF0xvEx4A2jsIEc7CjxVAFwI 0_Gr1j6F4UJbIYCTnIWIevJa73UjIFyTuYvjxUIYiiDUUUU X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiBgQBA2rqY4K7qwAAsx usb_get_from_anchor() returns the URB with a reference held by the caller. When atusb_submit_rx_urb() fails, that reference is not consumed, and re-anchoring the URB takes an additional one. The caller's reference is then never dropped. Release it after putting the URB back on the idle anchor. Fixes: 7490b008d123 ("ieee802154: add support for atusb transceiver") Cc: stable@vger.kernel.org Assisted-by: DeepSeek-V4.1-Flash and OpenAI Codex Signed-off-by: Wentao Liang --- drivers/net/ieee802154/atusb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ieee802154/atusb.c b/drivers/net/ieee802154/atusb.c index 5f7fc4ee7a07..c924f17171f4 100644 --- a/drivers/net/ieee802154/atusb.c +++ b/drivers/net/ieee802154/atusb.c @@ -183,6 +183,7 @@ static void atusb_work_urbs(struct work_struct *work) } while (!ret); usb_anchor_urb(urb, &atusb->idle_urbs); + usb_free_urb(urb); dev_warn_ratelimited(&usb_dev->dev, "atusb_in: can't allocate/submit URB (%d)\n", ret); schedule_delayed_work(&atusb->work, -- 2.34.1