Date: Fri, 2 Apr 2010 15:22:23 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/fs/msdosfs msdosfs_vfsops.c Message-ID: <201004021522.o32FMd7F064058@repoman.freebsd.org>
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avg 2010-04-02 15:22:23 UTC
FreeBSD src repository
Modified files:
sys/fs/msdosfs msdosfs_vfsops.c
Log:
SVN rev 206098 on 2010-04-02 15:22:23Z by avg
mountmsdosfs: reject too high value of bytes per cluster
Bytes per cluster are calcuated as bytes per sector times sectors per
cluster. Too high value can overflow an internal variable with type
that can hold only values in valid range. Trying to use a wider type
results in an attempt to read more than MAXBSIZE at once, a panic.
Unfortunately, it is FreeBSD newfs_msdos that produces filesystems
with invalid parameters for certain types of media.
Reported by: Fabian Keil <freebsd-listen@fabiankeil.de>,
Paul B. Mahol <onemda@gmail.com>
Discussed with: bde, kib
MFC after: 1 week
X-ToDo: fix newfs_msdos
Revision Changes Path
1.199 +1 -0 src/sys/fs/msdosfs/msdosfs_vfsops.c
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