| Message ID | 20230720-arm64-fix-sve-sme-vl-change-v2-0-8eea06b82d57@kernel.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | arm64/fpsimd: Fix use after free in SME when changing SVE VL | expand |
On Thu, 20 Jul 2023 19:38:57 +0100, Mark Brown wrote: > This series fixes an issue which David Spickett found where if we change > the SVE VL while SME is in use we can end up attempting to save state to > an unallocated buffer and adds testing coverage for that plus a bit more > coverage of VL changes, just for paranioa. > > Applied first patch to arm64 (for-next/fixes), thanks! [1/3] arm64/fpsimd: Ensure SME storage is allocated after SVE VL changes https://git.kernel.org/arm64/c/d4d5be94a878 I'll look at the selftests stuff for 6.6 when I get to that (probably next week). Cheers,
On Thu, 20 Jul 2023 19:38:57 +0100, Mark Brown wrote: > This series fixes an issue which David Spickett found where if we change > the SVE VL while SME is in use we can end up attempting to save state to > an unallocated buffer and adds testing coverage for that plus a bit more > coverage of VL changes, just for paranioa. > > Applied to arm64 (for-next/selftests), thanks! [1/3] arm64/fpsimd: Ensure SME storage is allocated after SVE VL changes https://git.kernel.org/arm64/c/d4d5be94a878 [2/3] kselftest/arm64: Add a test case for SVE VL changes with SME active https://git.kernel.org/arm64/c/0c7c237b1c35 [3/3] kselftest/arm64: Validate that changing one VL type does not affect another https://git.kernel.org/arm64/c/0aeead9bb240 Cheers,
This series fixes an issue which David Spickett found where if we change the SVE VL while SME is in use we can end up attempting to save state to an unallocated buffer and adds testing coverage for that plus a bit more coverage of VL changes, just for paranioa. Signed-off-by: Mark Brown <broonie@kernel.org> --- Changes in v2: - Always reallocate the SVE state. - Rebase onto v6.5-rc2. - Link to v1: https://lore.kernel.org/r/20230713-arm64-fix-sve-sme-vl-change-v1-0-129dd8611413@kernel.org --- Mark Brown (3): arm64/fpsimd: Ensure SME storage is allocated after SVE VL changes kselftest/arm64: Add a test case for SVE VL changes with SME active kselftest/arm64: Validate that changing one VL type does not affect another arch/arm64/kernel/fpsimd.c | 33 +++++-- tools/testing/selftests/arm64/fp/vec-syscfg.c | 127 +++++++++++++++++++++++++- 2 files changed, 148 insertions(+), 12 deletions(-) --- base-commit: 06785562d1b99ff6dc1cd0af54be5e3ff999dc02 change-id: 20230713-arm64-fix-sve-sme-vl-change-60eb1fa6a707 Best regards,