Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Fri, 16 Dec 2022 16:50:40 +0800 (CST)
Message-ID: <202212161650404440816@zte.com.cn>
Mime-Version: 1.0
From:   <guo.ziliang@zte.com.cn>
To:     <catalin.marinas@arm.com>
Cc:     <will@kernel.org>, <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>, <huang.junhua@zte.com.cn>,
        <guo.ziliang@zte.com.cn>
Subject: =?UTF-8?B?W1BBVENIXSBhcm02NC91cHJvYmVzOiBjaGFuZ2UgdGhlIHVwcm9iZV9vcGNvZGVfdCB0eXBlZGVmIHRvIGZpeCB0aGUgc3BhcnNlIHdhcm5pbmc=?=
Content-Type: text/plain;
        charset="UTF-8"
Precedence: bulk

From: junhua huang <huang.junhua@zte.com.cn>
After we fixed the uprobe inst endian in aarch_be, the sparse check report
the following warning info:

sparse warnings: (new ones prefixed by >>)
>> kernel/events/uprobes.c:223:25: sparse: sparse: restricted __le32 degrades to integer
>> kernel/events/uprobes.c:574:56: sparse: sparse: incorrect type in argument 4 (different base types)
@@     expected unsigned int [addressable] [usertype] opcode @@     got restricted __le32 [usertype] @@
   kernel/events/uprobes.c:574:56: sparse:     expected unsigned int [addressable] [usertype] opcode
   kernel/events/uprobes.c:574:56: sparse:     got restricted __le32 [usertype]
>> kernel/events/uprobes.c:1483:32: sparse: sparse: incorrect type in initializer (different base types)
@@     expected unsigned int [usertype] insn @@     got restricted __le32 [usertype] @@
   kernel/events/uprobes.c:1483:32: sparse:     expected unsigned int [usertype] insn
   kernel/events/uprobes.c:1483:32: sparse:     got restricted __le32 [usertype]

use the __le32 to u32 for uprobe_opcode_t, to keep the same.

Fixes: 60f07e22a73d ("arm64:uprobe fix the uprobe SWBP_INSN in big-endian")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: junhua huang <huang.junhua@zte.com.cn>
---
 arch/arm64/include/asm/uprobes.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/include/asm/uprobes.h b/arch/arm64/include/asm/uprobes.h
index ba4bff5ca674..2b09495499c6 100644
--- a/arch/arm64/include/asm/uprobes.h
+++ b/arch/arm64/include/asm/uprobes.h
@@ -16,7 +16,7 @@
 #define UPROBE_SWBP_INSN_SIZE	AARCH64_INSN_SIZE
 #define UPROBE_XOL_SLOT_BYTES	MAX_UINSN_BYTES

-typedef u32 uprobe_opcode_t;
+typedef __le32 uprobe_opcode_t;

 struct arch_uprobe_task {
 };
-- 
2.15.2