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Message-Id: <1388997834-28028-1-git-send-email-tangchen@cn.fujitsu.com> Date: Mon, 6 Jan 2014 16:43:54 +0800 From: Tang Chen <tangchen@...fujitsu.com> To: rjw@...k.pl, lenb@...nel.org, toshi.kani@...com Cc: tangchen@...fujitsu.com, linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH] acpi: 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@...fujitsu.com> Acked-by: Toshi Kani <toshi.kani@...com> --- drivers/acpi/tables.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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) -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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