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-next>] [day] [month] [year] [list]
Message-Id: <110ffcd4e420c86c42b41ce2bc9f0fe6a4f32cd3.1638795127.git.xhao@linux.alibaba.com>
Date:   Mon,  6 Dec 2021 20:52:43 +0800
From:   Xin Hao <xhao@...ux.alibaba.com>
To:     sj@...nel.org
Cc:     xhao@...ux.alibaba.com, akpm@...ux-foundation.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [PATCH V2] mm/damon: Modify damon_rand() macro to static inline function

The damon_rand() func can not be implemented as a macro.
Example:
	damon_rand(a++, b);
The value of 'a' will be incremented twice, This is obviously
unreasonable, So there fix it.

Fixes: b9a6ac4e4ede ("mm/damon: adaptively adjust regions")
Reported-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Xin Hao <xhao@...ux.alibaba.com>
---
 include/linux/damon.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/linux/damon.h b/include/linux/damon.h
index c6df025d8704..a58046cd45e6 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -19,7 +19,10 @@
 #define DAMOS_MAX_SCORE		(99)

 /* Get a random number in [l, r) */
-#define damon_rand(l, r) (l + prandom_u32_max(r - l))
+static inline unsigned long damon_rand(unsigned long l, unsigned long r)
+{
+	return l + prandom_u32_max(r - l);
+}

 /**
  * struct damon_addr_range - Represents an address region of [@start, @end).
--
2.31.0

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ