diff options
| author |   Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org> | 2015-02-18 13:33:19 +0200 |
|---|---|---|
| committer |   Matt Fleming <matt.fleming@intel.com> | 2015-02-24 18:54:17 +0000 |
| commit | 6d9ff473317245e3e5cd9922b4520411c2296388 (patch) | |
| tree | edbc02605c03cfa2708ea1083515613139ef9d1a /drivers/firmware | |
| parent | efi/libstub: Fix boundary checking in efi_high_alloc() (diff) | |
| download | linux-dev-6d9ff473317245e3e5cd9922b4520411c2296388.tar.xz linux-dev-6d9ff473317245e3e5cd9922b4520411c2296388.zip | |
firmware: dmi_scan: Fix dmi_len type
According to SMBIOSv3 specification the length of DMI table can be
up to 32bits wide. So use appropriate type to avoid overflow.
It's obvious that dmi_num theoretically can be more than u16 also,
so it's can be changed to u32 or at least it's better to use int
instead of u16, but on that moment I cannot imagine dmi structure
count more than 65535 and it can require changing type of vars that
work with it. So I didn't correct it.
Acked-by: Ard Biesheuvel <ard@linaro.org>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/dmi_scan.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c index a44b87c7b45c..69fac068669f 100644 --- a/drivers/firmware/dmi_scan.c +++ b/drivers/firmware/dmi_scan.c @@ -78,7 +78,7 @@ static const char * __init dmi_string(const struct dmi_header *dm, u8 s) * We have to be cautious here. We have seen BIOSes with DMI pointers * pointing to completely the wrong place for example */ -static void dmi_table(u8 *buf, int len, int num, +static void dmi_table(u8 *buf, u32 len, int num, void (*decode)(const struct dmi_header *, void *), void *private_data) { @@ -115,7 +115,7 @@ static void dmi_table(u8 *buf, int len, int num, } static phys_addr_t dmi_base; -static u16 dmi_len; +static u32 dmi_len; static u16 dmi_num; static int __init dmi_walk_early(void (*decode)(const struct dmi_header *, |