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| author | Andreas Gruenbacher <agruenba@redhat.com> | 2017-10-09 11:13:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-18 09:35:41 +0200 |
| commit | f9139a1a2457323894c1780f0e44271af807346d (patch) | |
| tree | 35aa49f2a8769b38bdddfdd0c6ceb11b1f161d79 /fs/efivarfs/super.c | |
| parent | 3941ee20839fbb14b427df95dd099af43b18aef3 (diff) | |
direct-io: Prevent NULL pointer access in submit_page_section
commit 899f0429c7d3eed886406cd72182bee3b96aa1f9 upstream.
In the code added to function submit_page_section by commit b1058b981,
sdio->bio can currently be NULL when calling dio_bio_submit. This then
leads to a NULL pointer access in dio_bio_submit, so check for a NULL
bio in submit_page_section before trying to submit it instead.
Fixes xfstest generic/250 on gfs2.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/efivarfs/super.c')
0 files changed, 0 insertions, 0 deletions