In the Linux kernel, the following vulnerability has been resolved:

IB/rdmavt: add lock to call to rvt_error_qp to prevent a race condition

The documentation of the function rvt_error_qp says both r_lock and s_lock
need to be held when calling that function.  It also asserts using lockdep
that both of those locks are held.  However, the commit I referenced in
Fixes accidentally makes the call to rvt_error_qp in rvt_ruc_loopback no
longer covered by r_lock.  This results in the lockdep assertion failing
and also possibly in a race condition.

https://git.kernel.org/stable/c/43c2d7890ecabe527448a6c391fb2d9a5e6bbfe0

https://git.kernel.org/stable/c/4d809f69695d4e7d1378b3a072fa9aef23123018

https://git.kernel.org/stable/c/57800cc36e55db0547461c49acf5cd84c0f502b0

https://git.kernel.org/stable/c/77ffb2495a41098f9d6a14f8aefde3188da75944

https://git.kernel.org/stable/c/8a50937227c385a477177c9ffa122b4230e40666

https://git.kernel.org/stable/c/92f1947c0d26060e978b3a9f21f32ce7c8c9cca3