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| author | Kirill Tkhai <ktkhai@virtuozzo.com> | 2018-09-25 12:52:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-11-21 09:27:39 +0100 |
| commit | 8bb4354af373a8af395450acd298f25ddb79d93b (patch) | |
| tree | 839d0ab70b2f44089e243cee662b0b87a39f3b27 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 7574afe0cfc0e103f309a721880d195f38b292e0 (diff) | |
fuse: Fix use-after-free in fuse_dev_do_write()
commit d2d2d4fb1f54eff0f3faa9762d84f6446a4bc5d0 upstream.
After we found req in request_find() and released the lock,
everything may happen with the req in parallel:
cpu0 cpu1
fuse_dev_do_write() fuse_dev_do_write()
req = request_find(fpq, ...) ...
spin_unlock(&fpq->lock) ...
... req = request_find(fpq, oh.unique)
... spin_unlock(&fpq->lock)
queue_interrupt(&fc->iq, req); ...
... ...
... ...
request_end(fc, req);
fuse_put_request(fc, req);
... queue_interrupt(&fc->iq, req);
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: 46c34a348b0a ("fuse: no fc->lock for pqueue parts")
Cc: <stable@vger.kernel.org> # v4.2
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions