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:	Sat, 28 Jul 2012 17:43:12 -0400
From:	Theodore Ts'o <>
To:	Eric Sandeen <>
Cc:	ext4 development <>,
Subject: Re: filefrag: Fix segfault on virtual fs

On Tue, Jun 26, 2012 at 03:59:08AM -0000, Eric Sandeen wrote:
> filefrag on a virtual fs like proc segfaults:
> # filefrag /proc/filesystems 
> Floating point exception
> because stat.f_blocks is 0, so the calculation of cylgroups is 0,
> which leads to a divide by 0 when calculating expected extents.
> Since it's only used for ext2 filesystems anyway, just move
> the calculation of expected under "if (is_ext2)" to fix this.
> Reported-by: Max Beikirch <>
> Signed-off-by: Eric Sandeen <>

Applied, thanks.

					- Ted
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists