linux-kernel - Re: vfat BKL/lock_super regression in v2.6.26-rc3-g8f59342

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]

Date:	Wed, 20 Aug 2008 23:23:41 +0200
From:	Diego Calleja <diegocalleja@...il.com>
To:	Bart Trojanowski <bart@...ie.net>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Al Viro <viro@...iv.linux.org.uk>
Subject: Re: vfat BKL/lock_super regression in v2.6.26-rc3-g8f59342

El Tue, 19 Aug 2008 22:27:12 -0400, Bart Trojanowski <bart@...ie.net> escribió:

> I was reading the vfat code, and it turns out that vfat has a "flush"
> mount option.  Which is documented in the code (not in the manpage) as:

Yeah, probably the one place where it was documented was 
http://kernelnewbies.org/Linux_2_6_19 (commit ae78bf9c4f5fde3c67e2829505f195d7347ce3e4).

Apparently at least one person must have read it, because there's a lot
of dmesgs in the interweb with this string in it:

"FAT: Unrecognized mount option "flush" or missing value"

due to HAL trying to mount vfat filesystems with that option in kernels
that don't support it. Which broke USB stick support for them, BTW, and
generated a lot of posts in forums asking for help.

IOW: not only this option exist, it's also being used by default in all
the vfat mounts on the linux systems that use HAL, ie. almost all of them.

--
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/