This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "XFS development tree".
The branch, master has been updated
e49f565 xfs: fix possible overflow in xfs_ioc_trim()
from ef49624be283c67c40dcdac94ca125e1ddda8ff6 (commit)
Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.
- Log -----------------------------------------------------------------
commit e49f565973deb3408c0e1dd83d1f8dac5bcaa374
Author: Lukas Czerner <lczerner@xxxxxxxxxx>
Date: Wed Sep 21 09:42:30 2011 +0000
xfs: fix possible overflow in xfs_ioc_trim()
In xfs_ioc_trim it is possible that computing the last allocation group
to discard might overflow for big start & len values, because the result
might be bigger then xfs_agnumber_t which is 32 bit long. Fix this by not
allowing the start and end block of the range to be beyond the end of the
file system.
Note that if the start is beyond the end of the file system we have to
return -EINVAL, but in the "end" case we have to truncate it to the fs
size.
Also introduce "end" variable, rather than using start+len which which
might be more confusing to get right as this bug shows.
Signed-off-by: Lukas Czerner <lczerner@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Alex Elder <aelder@xxxxxxx>
-----------------------------------------------------------------------
Summary of changes:
fs/xfs/xfs_discard.c | 20 ++++++++++----------
1 files changed, 10 insertions(+), 10 deletions(-)
hooks/post-receive
--
XFS development tree
_______________________________________________
xfs mailing list
xfs@xxxxxxxxxxx
http://oss.sgi.com/mailman/listinfo/xfs
