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author | Damien Le Moal <damien.lemoal@opensource.wdc.com> | 2022-06-02 15:03:44 +0300 |
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committer | Jens Axboe <axboe@kernel.dk> | 2022-06-02 16:11:28 +0300 |
commit | aacae8c469f9ce4b303a2eb61593ff522c1420bc (patch) | |
tree | 6493baa81013cfe7bf690157723e390eec42dcf6 /include/drm/drm_crtc.h | |
parent | c9fdf7b453874e37ff4c499140ba2ab56fa0c7e5 (diff) | |
download | linux-aacae8c469f9ce4b303a2eb61593ff522c1420bc.tar.xz |
block: null_blk: Fix null_zone_write()
The bio and rq fields of struct nullb_cmd are now overlapping in a
union. So we cannot use a test on ->bio being non-NULL to detect the
NULL_Q_BIO queue mode. null_zone_write() use such broken test to set the
sector position of a zone append write in the command bio or request.
When the null_blk device uses the NULL_Q_MQ queue mode,
null_zone_write() wrongly end up setting the bio sector position,
resulting in the command request to be broken and random crashes
following.
Fix this by testing the device queue mode directly.
Fixes: 8ba816b23abd ("null-blk: save memory footprint for struct nullb_cmd")
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20220602120344.1365329-1-damien.lemoal@opensource.wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/drm/drm_crtc.h')
0 files changed, 0 insertions, 0 deletions