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| author | Andreas Gruenbacher <agruenba@redhat.com> | 2019-04-30 18:45:34 +0300 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2019-05-01 17:47:37 +0300 |
| commit | 7a77dad7e3be1280456508841ccdd2a091b1906a (patch) | |
| tree | 7510729009e7832f994a672e224a1d92aee8326d /fs/gfs2/bmap.c | |
| parent | 26ddb1f4fd884258eeb8a8d7f2d40b163f00fedd (diff) | |
| download | linux-7a77dad7e3be1280456508841ccdd2a091b1906a.tar.xz | |
iomap: Fix use-after-free error in page_done callback
In iomap_write_end, we're not holding a page reference anymore when
calling the page_done callback, but the callback needs that reference to
access the page. To fix that, move the put_page call in
__generic_write_end into the callers of __generic_write_end. Then, in
iomap_write_end, put the page after calling the page_done callback.
Reported-by: Jan Kara <jack@suse.cz>
Fixes: 63899c6f8851 ("iomap: add a page_done callback")
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/gfs2/bmap.c')
0 files changed, 0 insertions, 0 deletions