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Re: [Xen-devel] [PATCH 19/21] treewide: add checks for the return value of memblock_alloc*()
- To: Mike Rapoport <rppt@xxxxxxxxxxxxx>, linux-mm@xxxxxxxxx
- From: Juergen Gross <jgross@xxxxxxxx>
- Date: Wed, 16 Jan 2019 15:32:03 +0100
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- Cc: Rich Felker <dalias@xxxxxxxx>, linux-ia64@xxxxxxxxxxxxxxx, Petr Mladek <pmladek@xxxxxxxx>, linux-sh@xxxxxxxxxxxxxxx, Catalin Marinas <catalin.marinas@xxxxxxx>, Heiko Carstens <heiko.carstens@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, Max Filippov <jcmvbkbc@xxxxxxxxx>, Guo Ren <guoren@xxxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, sparclinux@xxxxxxxxxxxxxxx, Christoph Hellwig <hch@xxxxxx>, linux-s390@xxxxxxxxxxxxxxx, linux-c6x-dev@xxxxxxxxxxxxx, Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>, Richard Weinberger <richard@xxxxxx>, x86@xxxxxxxxxx, Russell King <linux@xxxxxxxxxxxxxxx>, kasan-dev@xxxxxxxxxxxxxxxx, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>, Mark Salter <msalter@xxxxxxxxxx>, Dennis Zhou <dennis@xxxxxxxxxx>, Matt Turner <mattst88@xxxxxxxxx>, linux-snps-arc@xxxxxxxxxxxxxxxxxxx, uclinux-h8-devel@xxxxxxxxxxxxxxxxxxxx, devicetree@xxxxxxxxxxxxxxx, linux-xtensa@xxxxxxxxxxxxxxxx, linux-um@xxxxxxxxxxxxxxxxxxx, linux-m68k@xxxxxxxxxxxxxxxxxxxx, Rob Herring <robh+dt@xxxxxxxxxx>, Greentime Hu <green.hu@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Stafford Horne <shorne@xxxxxxxxx>, Guan Xuetao <gxt@xxxxxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, Michal Simek <monstr@xxxxxxxxx>, Tony Luck <tony.luck@xxxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, linux-usb@xxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxxx, Paul Burton <paul.burton@xxxxxxxx>, Vineet Gupta <vgupta@xxxxxxxxxxxx>, linux-alpha@xxxxxxxxxxxxxxx, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, linuxppc-dev@xxxxxxxxxxxxxxxx, "David S. Miller" <davem@xxxxxxxxxxxxx>, openrisc@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 16 Jan 2019 14:32:19 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Openpgp: preference=signencrypt
On 16/01/2019 14:44, Mike Rapoport wrote:
> Add check for the return value of memblock_alloc*() functions and call
> panic() in case of error.
> The panic message repeats the one used by panicing memblock allocators with
> adjustment of parameters to include only relevant ones.
>
> The replacement was mostly automated with semantic patches like the one
> below with manual massaging of format strings.
>
> @@
> expression ptr, size, align;
> @@
> ptr = memblock_alloc(size, align);
> + if (!ptr)
> + panic("%s: Failed to allocate %lu bytes align=0x%lx\n", __func__,
> size, align);
>
> Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
For the Xen part:
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
Juergen
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