linux-kernel - kernel/rcutree.c:2850:13: warning: array subscript is above array bounds

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: <20121129134752.GB219@x4>
Date:	Thu, 29 Nov 2012 14:47:52 +0100
From:	Markus Trippelsdorf <markus@...ppelsdorf.de>
To:	paulmck@...ux.vnet.ibm.com
Cc:	linux-kernel@...r.kernel.org
Subject: kernel/rcutree.c:2850:13: warning: array subscript is above array
 bounds

With gcc-4.8 I get:

  CC      kernel/rcutree.o
  kernel/rcutree.c: In function ‘rcu_init_one’:
  kernel/rcutree.c:2850:13: warning: array subscript is above array bounds [-Warray-bounds]
     rsp->level[i] = rsp->level[i - 1] + rsp->levelcnt[i - 1];
                  ^
2849    for (i = 1; i < rcu_num_lvls; i++)
2850           rsp->level[i] = rsp->level[i - 1] + rsp->levelcnt[i - 1];

At first I thought that the warning was bogus, but rcu_num_lvls isn't static
and gets modified prior to the for loop.

-- 
Markus
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/