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  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:   Mon, 18 Sep 2017 17:33:47 +0200
From:   Pablo Neira Ayuso <>
To:     Geert Uytterhoeven <>
Cc:     Jozsef Kadlecsik <>,
        Florian Westphal <>,
        "David S . Miller" <>,
        Arnd Bergmann <>,,,,
Subject: Re: [PATCH] netfilter: nat: Do not use ARRAY_SIZE() on spinlocks to
 fix zero div

On Sun, Sep 10, 2017 at 01:41:41PM +0200, Geert Uytterhoeven wrote:
> If no spinlock debugging options (CONFIG_GENERIC_LOCKBREAK,
> platform (e.g. m68k defconfig), arch_spinlock_t is an empty struct,
> hence using ARRAY_SIZE(nf_nat_locks) causes a division by zero:
>     net/netfilter/nf_nat_core.c: In function ‘nf_nat_setup_info’:
>     net/netfilter/nf_nat_core.c:432: warning: division by zero
>     net/netfilter/nf_nat_core.c: In function ‘__nf_nat_cleanup_conntrack’:
>     net/netfilter/nf_nat_core.c:535: warning: division by zero
>     net/netfilter/nf_nat_core.c:537: warning: division by zero
>     net/netfilter/nf_nat_core.c: In function ‘nf_nat_init’:
>     net/netfilter/nf_nat_core.c:810: warning: division by zero
>     net/netfilter/nf_nat_core.c:811: warning: division by zero
>     net/netfilter/nf_nat_core.c:824: warning: division by zero
> Fix this by using the CONNTRACK_LOCKS definition instead.


Powered by blists - more mailing lists