Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/gfx6: Use PFP on the compute queues too On GFX6, the compute rings use the same CP path as the graphics ring. The only difference is that they don't support draw commands. (As opposed to GFX7 and newer which have a separate command parser that is called MEC for compute queues.) This means that we have to take into consideration that the PFP also exists on compute queues on GFX6: Use PFP for register writes on both graphics and compute queues. In the pipeline sync, use the PFP to wait for the previous fence (and not the ME) to prevent the PFP from starting to execute the next submission while the ME is still in the previous submission. After a VM flush, emit PFP_SYNC_ME on compute queues as well.
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
2cd46ad22383ab8372b86cdb5257589496099412 to < f37211b9c01433f0bbb4709d25df7a0257cf915baffected2cd46ad22383ab8372b86cdb5257589496099412 to < 2aa869c6b23e0b1b7f39f762618852811d75deb9affected2cd46ad22383ab8372b86cdb5257589496099412 to < fbabc39b4f0fc771b00525ffd448be6a84355048affected2cd46ad22383ab8372b86cdb5257589496099412 to < b5d1d3e4519dc8f1b55d6b236848bed67b11a2e8affected2cd46ad22383ab8372b86cdb5257589496099412 to < e1d3018e3621c90cec070b6915836ae129656663affected2cd46ad22383ab8372b86cdb5257589496099412 to < 8d752f1bb73fabe5a425acbf5c767c0fe68bf3c5affected2cd46ad22383ab8372b86cdb5257589496099412 to < e399e9d7e291ccbeba6560fb8278c8d2aa744521affected2cd46ad22383ab8372b86cdb5257589496099412 to < 60f20946cd318518ddc2c0da12103c666b2b9564affected
Linux Linux
Default version status: affected
4.9affected0 to < 4.9unaffected5.10.270 to ≤ 5.10.*unaffected5.15.221 to ≤ 5.15.*unaffected6.1.188 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.110 to ≤ 6.12.*unaffected6.18.52 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/f37211b9c01433f0bbb4709d25df7a0257cf915b ↗
- https://git.kernel.org/stable/c/2aa869c6b23e0b1b7f39f762618852811d75deb9 ↗
- https://git.kernel.org/stable/c/fbabc39b4f0fc771b00525ffd448be6a84355048 ↗
- https://git.kernel.org/stable/c/b5d1d3e4519dc8f1b55d6b236848bed67b11a2e8 ↗
- https://git.kernel.org/stable/c/e1d3018e3621c90cec070b6915836ae129656663 ↗
- https://git.kernel.org/stable/c/8d752f1bb73fabe5a425acbf5c767c0fe68bf3c5 ↗
- https://git.kernel.org/stable/c/e399e9d7e291ccbeba6560fb8278c8d2aa744521 ↗
- https://git.kernel.org/stable/c/60f20946cd318518ddc2c0da12103c666b2b9564 ↗