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| author | Kirill Tkhai <ktkhai@virtuozzo.com> | 2018-09-25 12:52:42 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2018-09-28 17:43:21 +0300 |
| commit | d2d2d4fb1f54eff0f3faa9762d84f6446a4bc5d0 (patch) | |
| tree | ddd35a1d08bab57bcd1b35e24f304958b17609f9 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | bc78abbd55dd28e2287ec6d6502b842321a17c87 (diff) | |
| download | linux-d2d2d4fb1f54eff0f3faa9762d84f6446a4bc5d0.tar.xz | |
fuse: Fix use-after-free in fuse_dev_do_write()
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
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions