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| author | tangchen <tangchen@cn.fujitsu.com> | 2014-01-06 16:43:54 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-01-06 12:33:05 +0100 |
| commit | de2d1a7e9310c4d1464faf469c737f08b5608600 (patch) | |
| tree | ae884687c79a68cd9ed28f01813402ba6f5dbe16 /drivers/acpi/tables.c | |
| parent | 6a368751d54ed80e6ba868c29a04ad5118fe104b (diff) | |
| download | linux-stable-de2d1a7e9310c4d1464faf469c737f08b5608600.tar.gz linux-stable-de2d1a7e9310c4d1464faf469c737f08b5608600.tar.bz2 linux-stable-de2d1a7e9310c4d1464faf469c737f08b5608600.zip | |
ACPI / tables: Check if id is NULL in acpi_table_parse()
strncmp() does not check if the params are NULL. In acpi_table_parse(),
if @id is NULL, the kernel will panic.
Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Acked-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/tables.c')
| -rw-r--r-- | drivers/acpi/tables.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index 4ec44258e4ff..a17619bfb57b 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -293,7 +293,7 @@ int __init acpi_table_parse(char *id, acpi_tbl_table_handler handler) if (acpi_disabled) return -ENODEV; - if (!handler) + if (!id || !handler) return -EINVAL; if (strncmp(id, ACPI_SIG_MADT, 4) == 0) |