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| author |   Du, Changbin <changbin.du@intel.com> | 2015-12-18 15:36:40 +0800 |
|---|---|---|
| committer |   Felipe Balbi <balbi@ti.com> | 2015-12-22 12:04:05 -0600 |
| commit | 8a0859b65b06ea07461271ce4f1fe25b48d1ec55 (patch) | |
| tree | bc345d9e4aadb539983ea114dacbf11cdfd9de35 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | usb: dwc2: gadget: Repair DSTS register decoding (diff) | |
| download | linux-dev-8a0859b65b06ea07461271ce4f1fe25b48d1ec55.tar.xz linux-dev-8a0859b65b06ea07461271ce4f1fe25b48d1ec55.zip | |
usb: gadget: forbid queuing request to a disabled ep
Queue a request to disabled ep doesn't make sense, and induce caller
make mistakes.
Here is a example for the android mtp gadget function driver. A mem
corruption can happen on below senario.
1) On disconnect, mtp driver disable its EPs,
2) During send_file_work and receive_file_work, mtp queues a request
to ep. (The mtp driver need improve its synchronization logic!)
3) mtp_function_unbind is invoked and all mtp requests are freed.
4) when udc process the request queued on step 2, will cause kernel
NULL pointer dereference exception.
Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions