From: Jakub Kicinski <kuba@kernel.org>
To: Arnd Bergmann <arnd@kernel.org>
Cc: Chas Williams <3chas3@gmail.com>, Arnd Bergmann <arnd@arndb.de>,
Nathan Chancellor <natechancellor@gmail.com>,
Nick Desaulniers <ndesaulniers@google.com>,
"David S. Miller" <davem@davemloft.net>,
linux-atm-general@lists.sourceforge.net, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, clang-built-linux@googlegroups.com
Subject: Re: [PATCH net-next 01/11] atm: horizon: shut up clang null pointer arithmetic warning
Date: Tue, 27 Oct 2020 17:42:26 -0700 [thread overview]
Message-ID: <20201027174226.4bd50144@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> (raw)
In-Reply-To: <20201026213040.3889546-1-arnd@kernel.org>
On Mon, 26 Oct 2020 22:29:48 +0100 Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
>
> Building a "W=1" kernel with clang produces a warning about
> suspicous pointer arithmetic:
>
> drivers/atm/horizon.c:1844:52: warning: performing pointer arithmetic
> on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
> for (mem = (HDW *) memmap; mem < (HDW *) (memmap + 1); ++mem)
>
> The way that the addresses are handled is very obscure, and
> rewriting it to be more conventional seems fairly pointless, given
> that this driver probably has no users.
> Shut up this warning by adding a cast to uintptr_t.
>
> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Hi!
I'm not sure what your plan is for re-spinning but when you do could
you please split the wireless changes out? Also we never got patch 3
IDK if that's a coincidence or if it wasn't for networking...
next prev parent reply other threads:[~2020-10-29 0:35 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-26 21:29 [PATCH net-next 01/11] atm: horizon: shut up clang null pointer arithmetic warning Arnd Bergmann
2020-10-26 21:29 ` [PATCH net-next 02/11] net: hostap: fix function cast warning Arnd Bergmann
2020-11-07 11:37 ` Kalle Valo
2020-10-26 21:29 ` [PATCH net-next 04/11] wimax: fix duplicate initializer warning Arnd Bergmann
2020-10-27 7:22 ` Johannes Berg
2020-10-27 11:51 ` Arnd Bergmann
2020-10-27 14:51 ` Perez-Gonzalez, Inaky
2020-10-26 21:29 ` [PATCH net-next 05/11] wimax/i2400m/control: fix enum warning Arnd Bergmann
2020-10-26 21:29 ` [PATCH net-next 06/11] rtlwifi: fix -Wpointer-sign warning Arnd Bergmann
2020-10-27 1:29 ` Pkshih
2020-10-26 21:29 ` [PATCH net-next 07/11] rtw88: remove extraneous 'const' qualifier Arnd Bergmann
2020-10-27 1:49 ` Nathan Chancellor
2020-10-26 21:29 ` [PATCH net-next 08/11] ath9k: work around false-positive gcc warning Arnd Bergmann
2020-11-02 16:26 ` Kalle Valo
2020-11-02 17:59 ` Johannes Berg
2020-11-02 22:29 ` Arnd Bergmann
2020-11-07 11:18 ` Kalle Valo
2020-11-07 11:36 ` Arnd Bergmann
2020-11-10 18:13 ` Kalle Valo
2020-10-26 21:29 ` [PATCH net-next 09/11] ath6kl: fix enum-conversion warning Arnd Bergmann
2020-10-27 6:15 ` Kalle Valo
2020-11-07 8:08 ` Kalle Valo
2020-10-26 21:29 ` [PATCH net-next 10/11] ch_ktls: " Arnd Bergmann
2020-10-26 21:42 ` Andrew Lunn
2020-10-26 21:29 ` [PATCH net-next 11/11] ipv6: fix type mismatch warning Arnd Bergmann
2020-10-27 3:55 ` [PATCH net-next 01/11] atm: horizon: shut up clang null pointer arithmetic warning Xie He
2020-10-27 4:02 ` Xie He
2020-10-27 13:23 ` Arnd Bergmann
2020-10-27 21:46 ` Xie He
2020-10-28 0:42 ` Jakub Kicinski [this message]
2020-10-28 8:35 ` Arnd Bergmann
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