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| author | Ming Lei <ming.lei@redhat.com> | 2018-02-10 08:46:17 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-02-23 15:20:19 -0700 |
| commit | 0bd1ed4860d0f5f836aa8371797689a3779d1bf5 (patch) | |
| tree | 061d2a86451b27d9aff40d96cbb2effcbfb6b6c2 /block/ioctl.c | |
| parent | 0f9da844d87796ac31b04e81ee95e155e9043132 (diff) | |
| download | lwn-0bd1ed4860d0f5f836aa8371797689a3779d1bf5.tar.gz lwn-0bd1ed4860d0f5f836aa8371797689a3779d1bf5.zip | |
block: pass inclusive 'lend' parameter to truncate_inode_pages_range
The 'lend' parameter of truncate_inode_pages_range is required to be
inclusive, so follow the rule.
This patch fixes one memory corruption triggered by discard.
Cc: <stable@vger.kernel.org>
Cc: Dmitry Monakhov <dmonakhov@openvz.org>
Fixes: 351499a172c0 ("block: Invalidate cache on discard v2")
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/ioctl.c')
| -rw-r--r-- | block/ioctl.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/ioctl.c b/block/ioctl.c index 1668506d8ed8..3884d810efd2 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -225,7 +225,7 @@ static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode, if (start + len > i_size_read(bdev->bd_inode)) return -EINVAL; - truncate_inode_pages_range(mapping, start, start + len); + truncate_inode_pages_range(mapping, start, start + len - 1); return blkdev_issue_discard(bdev, start >> 9, len >> 9, GFP_KERNEL, flags); } |