On 3/23/25 08:35, Ard Biesheuvel wrote: [ ... ]
kernel_neon_end() calls local_bh_enable() which apparently conflicts with the local_irq_disable() in above code.This seems to be an oversight on my part. Can you try the below please? diff --git a/arch/arm/include/asm/simd.h b/arch/arm/include/asm/simd.h index 82191dbd7e78..56ddbd3c4997 100644 --- a/arch/arm/include/asm/simd.h +++ b/arch/arm/include/asm/simd.h @@ -4,5 +4,6 @@ static __must_check inline bool may_use_simd(void) { - return IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && !in_hardirq(); + return IS_ENABLED(CONFIG_KERNEL_MODE_NEON) && + !in_hardirq() && !irqs_disabled(); }
Yes, that fixes the problem. Thanks, Guenter
