From: Markus Armbruster <armbru@redhat.com>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, stefano.stabellini@eu.citrix.com,
mtosatti@redhat.com, agraf@suse.de, borntraeger@de.ibm.com,
pbonzini@redhat.com, afaerber@suse.de, rth@twiddle.net
Subject: [Qemu-devel] [PATCH 8/8] pc_sysfw: Fix ISA BIOS init for ridiculously big flash
Date: Wed, 19 Jun 2013 13:44:24 +0200 [thread overview]
Message-ID: <1371642264-17704-9-git-send-email-armbru@redhat.com> (raw)
In-Reply-To: <1371642264-17704-1-git-send-email-armbru@redhat.com>
pc_isa_bios_init() suffers integer overflow for flash larger than
INT_MAX.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
hw/block/pc_sysfw.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/hw/block/pc_sysfw.c b/hw/block/pc_sysfw.c
index 412d1b0..aebefc9 100644
--- a/hw/block/pc_sysfw.c
+++ b/hw/block/pc_sysfw.c
@@ -54,10 +54,7 @@ static void pc_isa_bios_init(MemoryRegion *rom_memory,
flash_size = memory_region_size(flash_mem);
/* map the last 128KB of the BIOS in ISA space */
- isa_bios_size = flash_size;
- if (isa_bios_size > (128 * 1024)) {
- isa_bios_size = 128 * 1024;
- }
+ isa_bios_size = MIN(flash_size, 128 * 1024);
isa_bios = g_malloc(sizeof(*isa_bios));
memory_region_init_ram(isa_bios, "isa-bios", isa_bios_size);
vmstate_register_ram_global(isa_bios);
--
1.7.11.7
prev parent reply other threads:[~2013-06-19 11:44 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-19 11:44 [Qemu-devel] [PATCH 0/8] ] Guest memory allocation fixes & cleanup Markus Armbruster
2013-06-19 11:44 ` [Qemu-devel] [PATCH 1/8] exec: Fix Xen RAM allocation with unusual options Markus Armbruster
2013-06-19 11:44 ` [Qemu-devel] [PATCH 2/8] exec: Clean up fall back when -mem-path allocation fails Markus Armbruster
2013-06-19 11:44 ` [Qemu-devel] [PATCH 3/8] exec: Reduce ifdeffery around -mem-path Markus Armbruster
2013-06-19 11:44 ` [Qemu-devel] [PATCH 4/8] exec: Simplify the guest physical memory allocation hook Markus Armbruster
2013-06-19 12:20 ` Christian Borntraeger
2013-06-19 11:44 ` [Qemu-devel] [PATCH 5/8] exec: Drop incorrect & dead S390 code in qemu_ram_remap() Markus Armbruster
2013-06-19 12:26 ` Christian Borntraeger
2013-06-19 12:56 ` Paolo Bonzini
2013-06-19 13:22 ` Markus Armbruster
2013-06-19 11:44 ` [Qemu-devel] [PATCH 6/8] exec: Clean up unnecessary S390 ifdeffery Markus Armbruster
2013-06-19 11:44 ` [Qemu-devel] [PATCH 7/8] exec: Don't abort when we can't allocate guest memory Markus Armbruster
2013-06-19 11:44 ` Markus Armbruster [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1371642264-17704-9-git-send-email-armbru@redhat.com \
--to=armbru@redhat.com \
--cc=afaerber@suse.de \
--cc=agraf@suse.de \
--cc=borntraeger@de.ibm.com \
--cc=mtosatti@redhat.com \
--cc=pbonzini@redhat.com \
--cc=peter.maydell@linaro.org \
--cc=qemu-devel@nongnu.org \
--cc=rth@twiddle.net \
--cc=stefano.stabellini@eu.citrix.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).