netdev - RE: [Intel-wired-lan] [PATCH iwl-net v2 4/5] idpf: fix memory leak in idpf_vc_core

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Message-ID: <SJ1PR11MB6297CE409C33E25665E144339BA0A@SJ1PR11MB6297.namprd11.prod.outlook.com>
Date: Wed, 10 Dec 2025 22:28:59 +0000
From: "Salin, Samuel" <samuel.salin@...el.com>
To: "Tantilov, Emil S" <emil.s.tantilov@...el.com>,
	"intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>
CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "Loktionov, Aleksandr"
	<aleksandr.loktionov@...el.com>, "Kitszel, Przemyslaw"
	<przemyslaw.kitszel@...el.com>, "Nguyen, Anthony L"
	<anthony.l.nguyen@...el.com>, "andrew+netdev@...n.ch"
	<andrew+netdev@...n.ch>, "davem@...emloft.net" <davem@...emloft.net>,
	"edumazet@...gle.com" <edumazet@...gle.com>, "kuba@...nel.org"
	<kuba@...nel.org>, "pabeni@...hat.com" <pabeni@...hat.com>,
	"decot@...gle.com" <decot@...gle.com>, "willemb@...gle.com"
	<willemb@...gle.com>, "Hay, Joshua A" <joshua.a.hay@...el.com>, "Chittim,
 Madhu" <madhu.chittim@...el.com>, "Lobakin, Aleksander"
	<aleksander.lobakin@...el.com>, "Zaremba, Larysa" <larysa.zaremba@...el.com>,
	"iamvivekkumar@...gle.com" <iamvivekkumar@...gle.com>
Subject: RE: [Intel-wired-lan] [PATCH iwl-net v2 4/5] idpf: fix memory leak in
 idpf_vc_core_deinit()



> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@...osl.org> On Behalf Of
> Emil Tantilov
> Sent: Thursday, November 20, 2025 4:12 PM
> To: intel-wired-lan@...ts.osuosl.org
> Cc: netdev@...r.kernel.org; Loktionov, Aleksandr
> <aleksandr.loktionov@...el.com>; Kitszel, Przemyslaw
> <przemyslaw.kitszel@...el.com>; Nguyen, Anthony L
> <anthony.l.nguyen@...el.com>; andrew+netdev@...n.ch;
> davem@...emloft.net; edumazet@...gle.com; kuba@...nel.org;
> pabeni@...hat.com; decot@...gle.com; willemb@...gle.com; Hay, Joshua
> A <joshua.a.hay@...el.com>; Chittim, Madhu <madhu.chittim@...el.com>;
> Lobakin, Aleksander <aleksander.lobakin@...el.com>; Zaremba, Larysa
> <larysa.zaremba@...el.com>; iamvivekkumar@...gle.com
> Subject: [Intel-wired-lan] [PATCH iwl-net v2 4/5] idpf: fix memory leak in
> idpf_vc_core_deinit()
> 
> Make sure to free hw->lan_regs. Reported by kmemleak during reset:
> 
> unreferenced object 0xff1b913d02a936c0 (size 96):
>   comm "kworker/u258:14", pid 2174, jiffies 4294958305
>   hex dump (first 32 bytes):
>     00 00 00 c0 a8 ba 2d ff 00 00 00 00 00 00 00 00  ......-.........
>     00 00 40 08 00 00 00 00 00 00 25 b3 a8 ba 2d ff  ..@.......%...-.
>   backtrace (crc 36063c4f):
>     __kmalloc_noprof+0x48f/0x890
>     idpf_vc_core_init+0x6ce/0x9b0 [idpf]
>     idpf_vc_event_task+0x1fb/0x350 [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: 6aa53e861c1a ("idpf: implement get LAN MMIO memory regions")
> Signed-off-by: Emil Tantilov <emil.s.tantilov@...el.com>
> Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@...el.com>
> Reviewed-by: Joshua Hay <joshua.a.hay@...el.com>
> ---
> 2.37.3

Tested-by: Samuel Salin <Samuel.salin@...el.com>