linux-kernel - Re: [PATCH] mmc: atmel-mci: fix mismatched section on atmci_cleanup

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAMf-jSkc7pCeqd6MfZJXKGWB6M=qA+c+yUCPaQ=UQ7r9E7R_xw@mail.gmail.com>
Date:	Sat, 27 Sep 2014 08:45:33 +0530
From:	Pramod Gurav <pramod.gurav.etc@...il.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Pramod Gurav <pramod.gurav@...rtplayin.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ludovic Desroches <ludovic.desroches@...el.com>,
	Chris Ball <chris@...ntf.net>,
	Ulf Hansson <ulf.hansson@...aro.org>, linux-mmc@...r.kernel.org
Subject: Re: [PATCH] mmc: atmel-mci: fix mismatched section on atmci_cleanup_slot

Hi Arnd,

On Sat, Sep 27, 2014 at 1:04 AM, Arnd Bergmann <arnd@...db.de> wrote:
> As of 528bc7808f4e ("mmc: atmel-mci: Release mmc resources on failure in probe"),
> the atmci_probe() function calls atmci_cleanup_slot in the failure path.
>
> This causes a new warning whenever the driver is built:
>
> WARNING: drivers/mmc/host/built-in.o(.init.text+0xa04): Section mismatch in reference from the function atmci_probe() to the function .exit.text:atmci_cleanup_slot()
> The function __init atmci_probe() references
> a function __exit atmci_cleanup_slot().
Thanks for this though I am not owner of the driver but the last
commit was mine.
but how come I did not see this warning? Any flag with compiler that
warned about this?
>
> Gcc correctly warns about this function getting dropped in the link stage
> for the built-in case, which would cause undefined behavior when this error
> path is hit. The solution is to simply drop the __exit annotation.
>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Fixes: 528bc7808f4e ("mmc: atmel-mci: Release mmc resources on failure in probe")
>
> diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
> index 772ef5b0e4d5..974626087732 100644
> --- a/drivers/mmc/host/atmel-mci.c
> +++ b/drivers/mmc/host/atmel-mci.c
> @@ -2244,7 +2244,7 @@ static int __init atmci_init_slot(struct atmel_mci *host,
>         return 0;
>  }
>
> -static void __exit atmci_cleanup_slot(struct atmel_mci_slot *slot,
> +static void atmci_cleanup_slot(struct atmel_mci_slot *slot,
>                 unsigned int id)
>  {
>         /* Debugfs stuff is cleaned up by mmc core */
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@...r.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/



-- 
Thanks and Regards
Pramod
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/