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| author | Bryan O'Donoghue <bryan.odonoghue@linaro.org> | 2020-01-09 13:17:21 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-14 16:29:55 -0500 |
| commit | b2e19c795f58b0a516a5d7524407fb2a2c82cba1 (patch) | |
| tree | b141a1c9b8f11d6d7c17be94dc8565e150ab6ce6 /lib/test_kasan.c | |
| parent | e1057e28b674e24ecfbce8821625d98d6298b1a3 (diff) | |
usb: gadget: f_ncm: Use atomic_t to track in-flight request
commit 5b24c28cfe136597dc3913e1c00b119307a20c7e upstream.
Currently ncm->notify_req is used to flag when a request is in-flight.
ncm->notify_req is set to NULL and when a request completes it is
subsequently reset.
This is fundamentally buggy in that the unbind logic of the NCM driver will
unconditionally free ncm->notify_req leading to a NULL pointer dereference.
Fixes: 40d133d7f542 ("usb: gadget: f_ncm: convert to new function interface with backward compatibility")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/test_kasan.c')
0 files changed, 0 insertions, 0 deletions