From: Paolo Bonzini <pbonzini@redhat.com>
To: Hu Tao <hutao@cn.fujitsu.com>, qemu-devel@nongnu.org
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>,
Peter Crosthwaite <peter.crosthwaite@xilinx.com>,
Yasuaki Isimatu <isimatu.yasuaki@jp.fujitsu.com>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v7 RESEND 6/8] exec: file_ram_alloc: don't exit if failed to preallocate memory
Date: Tue, 09 Sep 2014 13:23:41 +0200 [thread overview]
Message-ID: <540EE33D.2050302@redhat.com> (raw)
In-Reply-To: <af177e1c0f33c444d3e1ee6bb625f13dcaceab58.1410240131.git.hutao@cn.fujitsu.com>
Il 09/09/2014 07:27, Hu Tao ha scritto:
> diff --git a/exec.c b/exec.c
> index 2b9c4c5..0362cd8 100644
> --- a/exec.c
> +++ b/exec.c
> @@ -1129,8 +1129,8 @@ static void *file_ram_alloc(RAMBlock *block,
> return area;
>
> error:
> - if (mem_prealloc) {
> - exit(1);
> + if (area && area != MAP_FAILED) {
> + munmap(area, memory);
> }
"area" is being used uninitialized here, and os_mem_prealloc can still
do exit(1). I'm not sure what this patch is doing...
Paolo
> return NULL;
next prev parent reply other threads:[~2014-09-09 11:24 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-09 5:27 [Qemu-devel] [PATCH v7 RESEND 0/8] memory API improvements and bug fixes for memory backends Hu Tao
2014-09-09 5:27 ` [Qemu-devel] [PATCH v7 RESEND 1/8] exec: add parameter errp to qemu_ram_alloc and qemu_ram_alloc_from_ptr Hu Tao
2014-09-09 5:27 ` [Qemu-devel] [PATCH v7 RESEND 2/8] memory: add parameter errp to memory_region_init_ram Hu Tao
2014-09-09 11:28 ` Paolo Bonzini
2014-09-09 5:27 ` [Qemu-devel] [PATCH v7 RESEND 3/8] memory: add parameter errp to memory_region_init_ram_ptr Hu Tao
2014-09-09 11:18 ` Paolo Bonzini
2014-09-09 5:27 ` [Qemu-devel] [PATCH v7 RESEND 4/8] memory: add parameter errp to memory_region_init_rom_device Hu Tao
2014-09-09 11:20 ` Paolo Bonzini
2014-09-10 2:05 ` Hu Tao
2014-09-10 9:11 ` Paolo Bonzini
2014-09-09 5:27 ` [Qemu-devel] [PATCH v7 RESEND 5/8] hostmem-ram: don't exit qemu if size of memory-backend-ram is way too big Hu Tao
2014-09-09 5:27 ` [Qemu-devel] [PATCH v7 RESEND 6/8] exec: file_ram_alloc: don't exit if failed to preallocate memory Hu Tao
2014-09-09 11:23 ` Paolo Bonzini [this message]
2014-09-09 5:28 ` [Qemu-devel] [PATCH v7 RESEND 7/8] exec: report error when memory < hpagesize Hu Tao
2014-09-09 5:28 ` [Qemu-devel] [PATCH v7 RESEND 8/8] exec: add parameter errp to gethugepagesize Hu Tao
2014-09-09 11:29 ` [Qemu-devel] [PATCH v7 RESEND 0/8] memory API improvements and bug fixes for memory backends Paolo Bonzini
2014-09-10 2:09 ` Hu Tao
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