| commit | 690e5325b8c7d5db05fc569c0f7b888bb4248272 | [log] [tgz] |
|---|---|---|
| author | Christoph Hellwig <hch@lst.de> | Tue Jan 24 14:50:19 2017 +0100 |
| committer | Jens Axboe <axboe@fb.com> | Tue Jan 24 07:55:53 2017 -0700 |
| tree | b9c39916a4397b1eb628e07e4fc6aff91219e393 | |
| parent | a4685d2f58e2230d4e27fb2ee581d7ea35e5d046 [diff] |
block: fix use after free in __blkdev_direct_IO
We can't dereference the dio structure after submitting the last bio for
this request, as I/O completion might have happened before the code is
run. Introduce a local is_sync variable instead.
Fixes: 542ff7bf ("block: new direct I/O implementation")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Matias Bjørling <m@bjorling.me>
Tested-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>