Description
In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: Workaround SQM/PSE stalls by disabling sticky NIX SQ manager sticky mode is known to cause stalls when multiple SQs share an SMQ and transmit concurrently. Additionally, PSE may deadlock on transitions between sticky and non-sticky transmissions. There is also a credit drop issue observed when certain condition clocks are gated. work around these hardware errata by: - Disabling SQM sticky operation: - Clear TM6 (bit 15) - Clear TM11 (bit 14) - Disabling sticky → non-sticky transition path that can deadlock PSE: - Clear TM5 (bit 23) - Preventing credit drops by keeping the control-flow clock enabled: - Set TM9 (bit 21) These changes are applied via NIX_AF_SQM_DBG_CTL_STATUS. With this configuration the SQM/PSE maintain forward progress under load without credit loss, at the cost of disabling sticky optimizations.
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
5d9b976d4480dc0dcfa3719b645636d2f0f9f156 to < 9a3fd301329474f449e75f86d8a4f6b9c603fd6caffected5d9b976d4480dc0dcfa3719b645636d2f0f9f156 to < d0b3c8a80336029d9356f429151eb27922d80a3caffected5d9b976d4480dc0dcfa3719b645636d2f0f9f156 to < 36cc5a5e0178d5fb79e04173b8aa623b0108819aaffected5d9b976d4480dc0dcfa3719b645636d2f0f9f156 to < d9b549b6951ba178ec14339a031cae65f4e43fe1affected5d9b976d4480dc0dcfa3719b645636d2f0f9f156 to < cec2ceb35ce7bc874c43812bb39200d6cf691b87affected5d9b976d4480dc0dcfa3719b645636d2f0f9f156 to < 8052d0587fb14b85539c3a14a226586c0c3d6b4caffected5d9b976d4480dc0dcfa3719b645636d2f0f9f156 to < b7eba260a34e854e2487b8363c11976f082df00daffected5d9b976d4480dc0dcfa3719b645636d2f0f9f156 to < 70e9a5760abfb6338d63994d4de6b0778ec795d6affected
Linux Linux
Default version status: affected
5.5affected0 to < 5.5unaffected5.10.252 to ≤ 5.10.*unaffected5.15.202 to ≤ 5.15.*unaffected6.1.165 to ≤ 6.1.*unaffected6.6.128 to ≤ 6.6.*unaffected6.12.75 to ≤ 6.12.*unaffected6.18.16 to ≤ 6.18.*unaffected6.19.6 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/9a3fd301329474f449e75f86d8a4f6b9c603fd6c ↗
- https://git.kernel.org/stable/c/d0b3c8a80336029d9356f429151eb27922d80a3c ↗
- https://git.kernel.org/stable/c/36cc5a5e0178d5fb79e04173b8aa623b0108819a ↗
- https://git.kernel.org/stable/c/d9b549b6951ba178ec14339a031cae65f4e43fe1 ↗
- https://git.kernel.org/stable/c/cec2ceb35ce7bc874c43812bb39200d6cf691b87 ↗
- https://git.kernel.org/stable/c/8052d0587fb14b85539c3a14a226586c0c3d6b4c ↗
- https://git.kernel.org/stable/c/b7eba260a34e854e2487b8363c11976f082df00d ↗
- https://git.kernel.org/stable/c/70e9a5760abfb6338d63994d4de6b0778ec795d6 ↗