Messages in this thread Patch in this message | | | From | Tang Chen <> | Subject | [PATCH v2 3/4] acpi: Check if @id is NULL in acpi_table_parse() | Date | Tue, 3 Sep 2013 16:45:40 +0800 |
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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> --- 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 d67a1fe..5a5263b 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) -- 1.7.1
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