linux-kernel - [tip: x86/kaslr] x86/kaslr: Small cleanup of find_random_phys

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <159675713306.3192.18348861057543480095.tip-bot2@tip-bot2>
Date:   Thu, 06 Aug 2020 23:38:53 -0000
From:   "tip-bot2 for Arvind Sankar" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Arvind Sankar <nivedita@...m.mit.edu>,
        Ingo Molnar <mingo@...nel.org>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: x86/kaslr] x86/kaslr: Small cleanup of find_random_phys_addr()

The following commit has been merged into the x86/kaslr branch of tip:

Commit-ID:     4268b4da572f8bde8bc2f3243927ff5795687a6f
Gitweb:        https://git.kernel.org/tip/4268b4da572f8bde8bc2f3243927ff5795687a6f
Author:        Arvind Sankar <nivedita@...m.mit.edu>
AuthorDate:    Tue, 28 Jul 2020 18:57:18 -04:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Fri, 31 Jul 2020 11:08:17 +02:00

x86/kaslr: Small cleanup of find_random_phys_addr()

Just a trivial rearrangement to do all the processing together, and only
have one call to slots_fetch_random() in the source.

Signed-off-by: Arvind Sankar <nivedita@...m.mit.edu>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Link: https://lore.kernel.org/r/20200728225722.67457-18-nivedita@alum.mit.edu
---
 arch/x86/boot/compressed/kaslr.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
index ce34a05..ecdf33d 100644
--- a/arch/x86/boot/compressed/kaslr.c
+++ b/arch/x86/boot/compressed/kaslr.c
@@ -813,10 +813,9 @@ static unsigned long find_random_phys_addr(unsigned long minimum,
 		return 0;
 	}
 
-	if (process_efi_entries(minimum, image_size))
-		return slots_fetch_random();
+	if (!process_efi_entries(minimum, image_size))
+		process_e820_entries(minimum, image_size);
 
-	process_e820_entries(minimum, image_size);
 	return slots_fetch_random();
 }