linux-kernel - [PATCH v4 08/11] extable: Use is_kernel

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Message-ID: <20210930071143.63410-9-wangkefeng.wang@huawei.com>
Date:   Thu, 30 Sep 2021 15:11:40 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     <arnd@...db.de>, <linux-arch@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linuxppc-dev@...ts.ozlabs.org>,
        <rostedt@...dmis.org>, <mingo@...hat.com>, <davem@...emloft.net>,
        <ast@...nel.org>, <ryabinin.a.a@...il.com>,
        <akpm@...ux-foundation.org>
CC:     <mpe@...erman.id.au>, <benh@...nel.crashing.org>,
        <paulus@...ba.org>, <bpf@...r.kernel.org>,
        <linux-alpha@...r.kernel.org>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH v4 08/11] extable: Use is_kernel_text() helper

The core_kernel_text() should check the gate area, as it is part
of kernel text range, use is_kernel_text() in core_kernel_text().

Cc: Steven Rostedt <rostedt@...dmis.org>
Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 kernel/extable.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/kernel/extable.c b/kernel/extable.c
index 98ca627ac5ef..0ba383d850ff 100644
--- a/kernel/extable.c
+++ b/kernel/extable.c
@@ -64,8 +64,7 @@ const struct exception_table_entry *search_exception_tables(unsigned long addr)
 
 int notrace core_kernel_text(unsigned long addr)
 {
-	if (addr >= (unsigned long)_stext &&
-	    addr < (unsigned long)_etext)
+	if (is_kernel_text(addr))
 		return 1;
 
 	if (system_state < SYSTEM_RUNNING &&
-- 
2.26.2