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| author | Mark Brown <[email protected]> | 2023-08-02 23:46:39 +0000 |
|---|---|---|
| committer | Catalin Marinas <[email protected]> | 2023-08-03 14:41:03 +0000 |
| commit | c9bb40b7f786662e33d71afe236442b0b61f0446 (patch) | |
| tree | 73ff36e97b9c1b24524c43c13030a47705f9273f /net/unix/af_unix.c | |
| parent | ACPI/IORT: Remove erroneous id_count check in iort_node_get_rmr_info() (diff) | |
| download | kernel-c9bb40b7f786662e33d71afe236442b0b61f0446.tar.gz kernel-c9bb40b7f786662e33d71afe236442b0b61f0446.zip | |
arm64/fpsimd: Clear SME state in the target task when setting the VL
When setting SME vector lengths we clear TIF_SME to reenable SME traps,
doing a reallocation of the backing storage on next use. We do this using
clear_thread_flag() which operates on the current thread, meaning that when
setting the vector length via ptrace we may both not force traps for the
target task and force a spurious flush of any SME state that the tracing
task may have.
Clear the flag in the target task.
Fixes: e12310a0d30f ("arm64/sme: Implement ptrace support for streaming mode SVE registers")
Reported-by: David Spickett <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Catalin Marinas <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions