From: Markus Armbruster <armbru@redhat.com>
To: qemu-devel@nongnu.org
Cc: mtosatti@redhat.com, borntraeger@de.ibm.com, pbonzini@redhat.com,
agraf@suse.de, stefano.stabellini@eu.citrix.com
Subject: [Qemu-devel] [PATCH RFC 8/8] pc_sysfw: Fix ISA BIOS init for ridiculously big flash
Date: Thu, 13 Jun 2013 09:02:19 +0200 [thread overview]
Message-ID: <1371106939-6968-9-git-send-email-armbru@redhat.com> (raw)
In-Reply-To: <1371106939-6968-1-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
next prev parent reply other threads:[~2013-06-13 7:02 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-13 7:02 [Qemu-devel] [PATCH RFC 0/8] Guest memory allocation fixes & cleanup Markus Armbruster
2013-06-13 7:02 ` [Qemu-devel] [PATCH RFC 1/8] exec: Fix Xen RAM allocation with unusual options Markus Armbruster
2013-06-13 11:54 ` Stefano Stabellini
2013-06-13 7:02 ` [Qemu-devel] [PATCH RFC 2/8] exec: Clean up fall back when -mem-path allocation fails Markus Armbruster
2013-06-13 22:12 ` Paolo Bonzini
2013-06-13 7:02 ` [Qemu-devel] [PATCH RFC 3/8] exec: Reduce ifdeffery around -mem-path Markus Armbruster
2013-06-13 7:02 ` [Qemu-devel] [PATCH RFC 4/8] s390: Simplify the RAM allocation hook Markus Armbruster
2013-06-13 8:19 ` Andreas Färber
2013-06-13 22:14 ` Paolo Bonzini
2013-06-13 7:02 ` [Qemu-devel] [PATCH RFC 5/8] s390: Make qemu_ram_remap() consistent with allocation Markus Armbruster
2013-06-13 22:19 ` Paolo Bonzini
2013-06-13 7:02 ` [Qemu-devel] [PATCH RFC 6/8] exec: Clean up unnecessary S390 ifdeffery Markus Armbruster
2013-06-13 22:21 ` Paolo Bonzini
2013-06-14 8:06 ` Markus Armbruster
2013-06-15 17:26 ` Paolo Bonzini
2013-06-13 7:02 ` [Qemu-devel] [PATCH RFC 7/8] exec: Don't abort when we can't allocate guest memory Markus Armbruster
2013-06-13 8:33 ` Andreas Färber
2013-06-13 16:02 ` Richard Henderson
2013-06-13 17:27 ` Markus Armbruster
2013-06-13 16:21 ` Peter Maydell
2013-06-13 17:27 ` Markus Armbruster
2013-06-13 7:02 ` Markus Armbruster [this message]
2013-06-13 7:05 ` [Qemu-devel] [PATCH RFC 0/8] Guest memory allocation fixes & cleanup Markus Armbruster
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