netdev - [PATCH net 03/13] idpf: fix memory leak in idpf_vport

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Message-ID: <20260107000648.1861994-4-anthony.l.nguyen@intel.com>
Date: Tue,  6 Jan 2026 16:06:35 -0800
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	andrew+netdev@...n.ch,
	netdev@...r.kernel.org
Cc: Emil Tantilov <emil.s.tantilov@...el.com>,
	anthony.l.nguyen@...el.com,
	horms@...nel.org,
	joshua.a.hay@...el.com,
	madhu.chittim@...el.com,
	larysa.zaremba@...el.com,
	aleksander.lobakin@...el.com,
	iamvivekkumar@...gle.com,
	decot@...gle.com,
	willemb@...gle.com,
	Aleksandr Loktionov <aleksandr.loktionov@...el.com>,
	Samuel Salin <Samuel.salin@...el.com>
Subject: [PATCH net 03/13] idpf: fix memory leak in idpf_vport_rel()

From: Emil Tantilov <emil.s.tantilov@...el.com>

Free vport->rx_ptype_lkup in idpf_vport_rel() to avoid leaking memory
during a reset. Reported by kmemleak:

unreferenced object 0xff450acac838a000 (size 4096):
  comm "kworker/u258:5", pid 7732, jiffies 4296830044
  hex dump (first 32 bytes):
    00 00 00 00 00 10 00 00 00 10 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 10 00 00 00 00 00 00  ................
  backtrace (crc 3da81902):
    __kmalloc_cache_noprof+0x469/0x7a0
    idpf_send_get_rx_ptype_msg+0x90/0x570 [idpf]
    idpf_init_task+0x1ec/0x8d0 [idpf]
    process_one_work+0x226/0x6d0
    worker_thread+0x19e/0x340
    kthread+0x10f/0x250
    ret_from_fork+0x251/0x2b0
    ret_from_fork_asm+0x1a/0x30

Fixes: 0fe45467a104 ("idpf: add create vport and netdev configuration")
Signed-off-by: Emil Tantilov <emil.s.tantilov@...el.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@...el.com>
Reviewed-by: Madhu Chittim <madhu.chittim@...el.com>
Tested-by: Samuel Salin <Samuel.salin@...el.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/idpf/idpf_lib.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/intel/idpf/idpf_lib.c b/drivers/net/ethernet/intel/idpf/idpf_lib.c
index a964e0f5891e..04af10cfaa8c 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_lib.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_lib.c
@@ -1082,6 +1082,8 @@ static void idpf_vport_rel(struct idpf_vport *vport)
 		kfree(adapter->vport_config[idx]->req_qs_chunks);
 		adapter->vport_config[idx]->req_qs_chunks = NULL;
 	}
+	kfree(vport->rx_ptype_lkup);
+	vport->rx_ptype_lkup = NULL;
 	kfree(vport);
 	adapter->num_alloc_vports--;
 }
-- 
2.47.1