From 90c742c7f36f45249c62c0c5db2e138a604e44ac Mon Sep 17 00:00:00 2001 From: Stefan Weil Date: Tue, 4 Sep 2012 19:37:39 +0200 Subject: [PATCH] hw/mcf5206: Fix buffer overflow for MBAR read / write Report from smatch: mcf5206.c:384 m5206_mbar_readb(7) error: buffer overflow 'm5206_mbar_width' 128 <= 128 mcf5206.c:403 m5206_mbar_readw(8) error: buffer overflow 'm5206_mbar_width' 128 <= 128 mcf5206.c:427 m5206_mbar_readl(8) error: buffer overflow 'm5206_mbar_width' 128 <= 128 mcf5206.c:451 m5206_mbar_writeb(9) error: buffer overflow 'm5206_mbar_width' 128 <= 128 mcf5206.c:475 m5206_mbar_writew(9) error: buffer overflow 'm5206_mbar_width' 128 <= 128 mcf5206.c:503 m5206_mbar_writel(9) error: buffer overflow 'm5206_mbar_width' 128 <= 128 m5206_mbar_width has 0x80 elements and supports 0 <= offset < 0x200. Signed-off-by: Stefan Weil Reviewed-by: Peter Maydell Signed-off-by: Aurelien Jarno (cherry picked from commit a32354e206895400d17c3de9a8df1de96d3df289) Signed-off-by: Michael Roth --- hw/mcf5206.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/hw/mcf5206.c b/hw/mcf5206.c index 539b391..27753e2 100644 --- a/hw/mcf5206.c +++ b/hw/mcf5206.c @@ -378,7 +378,7 @@ static uint32_t m5206_mbar_readb(void *opaque, target_phys_addr_t offset) { m5206_mbar_state *s = (m5206_mbar_state *)opaque; offset &= 0x3ff; - if (offset > 0x200) { + if (offset >= 0x200) { hw_error("Bad MBAR read offset 0x%x", (int)offset); } if (m5206_mbar_width[offset >> 2] > 1) { @@ -397,7 +397,7 @@ static uint32_t m5206_mbar_readw(void *opaque, target_phys_addr_t offset) m5206_mbar_state *s = (m5206_mbar_state *)opaque; int width; offset &= 0x3ff; - if (offset > 0x200) { + if (offset >= 0x200) { hw_error("Bad MBAR read offset 0x%x", (int)offset); } width = m5206_mbar_width[offset >> 2]; @@ -421,7 +421,7 @@ static uint32_t m5206_mbar_readl(void *opaque, target_phys_addr_t offset) m5206_mbar_state *s = (m5206_mbar_state *)opaque; int width; offset &= 0x3ff; - if (offset > 0x200) { + if (offset >= 0x200) { hw_error("Bad MBAR read offset 0x%x", (int)offset); } width = m5206_mbar_width[offset >> 2]; @@ -445,7 +445,7 @@ static void m5206_mbar_writeb(void *opaque, target_phys_addr_t offset, m5206_mbar_state *s = (m5206_mbar_state *)opaque; int width; offset &= 0x3ff; - if (offset > 0x200) { + if (offset >= 0x200) { hw_error("Bad MBAR write offset 0x%x", (int)offset); } width = m5206_mbar_width[offset >> 2]; @@ -469,7 +469,7 @@ static void m5206_mbar_writew(void *opaque, target_phys_addr_t offset, m5206_mbar_state *s = (m5206_mbar_state *)opaque; int width; offset &= 0x3ff; - if (offset > 0x200) { + if (offset >= 0x200) { hw_error("Bad MBAR write offset 0x%x", (int)offset); } width = m5206_mbar_width[offset >> 2]; @@ -497,7 +497,7 @@ static void m5206_mbar_writel(void *opaque, target_phys_addr_t offset, m5206_mbar_state *s = (m5206_mbar_state *)opaque; int width; offset &= 0x3ff; - if (offset > 0x200) { + if (offset >= 0x200) { hw_error("Bad MBAR write offset 0x%x", (int)offset); } width = m5206_mbar_width[offset >> 2]; -- 1.7.12.1