Description
In the Linux kernel, the following vulnerability has been resolved: clk: sunxi-ng: h616: Reparent GPU clock during frequency changes The H616 manual does not state that the GPU PLL supports dynamic frequency configuration, so we must take extra care when changing the frequency. Currently any attempt to do device DVFS on the GPU lead to panfrost various ooops, and GPU hangs. The manual describes the algorithm for changing the PLL frequency, which the CPU PLL notifier code already support, so we reuse that to reparent the GPU clock to GPU1 clock during frequency changes.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
88dde5e23da1a16fe9a417171e6c941736b8d3a6 to < 5b447255bf170aee508d50c4a3a1156eb6dcc9b4affected88dde5e23da1a16fe9a417171e6c941736b8d3a6 to < 47a0da0c80749767de1bc0a7a27a69b34c22fbdaaffected88dde5e23da1a16fe9a417171e6c941736b8d3a6 to < 0c4f89f02c72f7cfb98a9a09cae89cc2e39e6017affected88dde5e23da1a16fe9a417171e6c941736b8d3a6 to < 1439673b78185eaaa5fae444b3a9d58c434ee78eaffected88dde5e23da1a16fe9a417171e6c941736b8d3a6 to < eb963d7948ce6571939c6875424b557b25f16610affected
Linux Linux
Default version status: affected
5.12affected0 to < 5.12unaffected6.1.191 to ≤ 6.1.*unaffected6.6.160 to ≤ 6.6.*unaffected6.12.114 to ≤ 6.12.*unaffected6.14.9 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/5b447255bf170aee508d50c4a3a1156eb6dcc9b4 ↗
- https://git.kernel.org/stable/c/47a0da0c80749767de1bc0a7a27a69b34c22fbda ↗
- https://git.kernel.org/stable/c/0c4f89f02c72f7cfb98a9a09cae89cc2e39e6017 ↗
- https://git.kernel.org/stable/c/1439673b78185eaaa5fae444b3a9d58c434ee78e ↗
- https://git.kernel.org/stable/c/eb963d7948ce6571939c6875424b557b25f16610 ↗