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Change History

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

accel/ivpu: Fix deadlock in context_xa

ivpu_device->context_xa is locked both in kernel thread and IRQ context.
It requires XA_FLAGS_LOCK_IRQ flag to be passed during initialization
otherwise the lock could be acquired from a thread and interrupted by
an IRQ that locks it for the second time causing the deadlock.

This deadlock was reported by lockdep and observed in internal tests.

kernel.org https://git.kernel.org/stable/c/d43e11d9c7fcb16f18bd46ab2556c2772ffc5775 [No types assigned]

kernel.org https://git.kernel.org/stable/c/e6011411147209bc0cc14628cbc155356837e52a [No types assigned]

kernel.org https://git.kernel.org/stable/c/fd7726e75968b27fe98534ccbf47ccd6fef686f3 [No types assigned]