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| author | Mingming Cao <cmm@us.ibm.com> | 2006-06-25 05:47:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-25 10:01:07 -0700 |
| commit | fcd5df35882b128ef3e160fab3074e6fe7ae501b (patch) | |
| tree | 2ffa30054f510e0fdca988d18ab28d6df12c3f06 /Documentation/md.txt | |
| parent | b61367732fc273977cc3fb85c272ce1a7bb1f533 (diff) | |
| download | op-kernel-dev-fcd5df35882b128ef3e160fab3074e6fe7ae501b.zip op-kernel-dev-fcd5df35882b128ef3e160fab3074e6fe7ae501b.tar.gz | |
[PATCH] Avoid disk sector_t overflow for >2TB ext3 filesystem
If ext3 filesystem is larger than 2TB, and sector_t is a u32 (i.e.
CONFIG_LBD not defined in the kernel), the calculation of the disk sector
will overflow. Add check at ext3_fill_super() and ext3_group_extend() to
prevent mount/remount/resize >2TB ext3 filesystem if sector_t size is 4
bytes.
Verified this patch on a 32 bit platform without CONFIG_LBD defined
(sector_t is 32 bits long), mount refuse to mount a 10TB ext3.
Signed-off-by: Mingming Cao<cmm@us.ibm.com>
Acked-by: Andreas Dilger <adilger@clusterfs.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/md.txt')
0 files changed, 0 insertions, 0 deletions
