linux-kernel - [PATCH v4 5/7] arch/x86: kprobes: Use text_alloc() in alloc_insn

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 17 Jul 2020 06:04:19 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     linux-kernel@...r.kernel.org
Cc:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)),
        "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Jiri Olsa <jolsa@...hat.com>
Subject: [PATCH v4 5/7] arch/x86: kprobes: Use text_alloc() in alloc_insn_page()

Use text_alloc() as part of the arch specific implementation for
alloc_insn_page().

Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Masami Hiramatsu <mhiramat@...nel.org>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>Im
---
 arch/x86/kernel/kprobes/core.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index ada39ddbc922..0f20a3e52a06 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -423,7 +423,7 @@ void *alloc_insn_page(void)
 {
 	void *page;
 
-	page = module_alloc(PAGE_SIZE);
+	page = text_alloc(PAGE_SIZE);
 	if (!page)
 		return NULL;
 
@@ -443,12 +443,6 @@ void *alloc_insn_page(void)
 	return page;
 }
 
-/* Recover page to RW mode before releasing it */
-void free_insn_page(void *page)
-{
-	module_memfree(page);
-}
-
 static int arch_copy_kprobe(struct kprobe *p)
 {
 	struct insn insn;
-- 
2.25.1